Re: [CentOS] vfstp and renaiming of files with ftp client - CLOSED

[Götz Reinicke - IT Koordinator]

Am 13.07.17 um 17:59 schrieb Pete Biggs:
>> The permissions for the upload folder are drwx-wx--- and the owner is
>> Bob group is ftpuploadgroup
>>
>> Alice is member of that group, but should only drop files in.
>>
>> The files are ownd by Alice, and I'm bit iritated, taht Bob can rename
>> tham ... as Bob only has read permision (from the group)
> A directory is just a special file which holds information on other
> files (such as names and the inodes those names point to). As such in
> order to rename a file you need write permission to the directory
> special file (i.e. '.') - the ownership and permissions of the file in
> question are not involved in renaming.
>
>> The files in a subfolder have the same permissions and Bob cant change
>> tham...
>>
> Because Bob does not have write permission to the directory.
>
> As someone else said, tell us what your aim is and we can try and tell
> you what file/directory permissions need to be applied. It may be that
> what you are trying to do is not possible within the standard Unix
> permissions, but some filesystems have extended ACLs which could help.
>
> P.
Hi and thanks to all suggestions. We currently go with the "old" way:
the users do the up- and download as told in the last years so we dont
have to change permissions or the server software and next year we may
change the system totally.

This is an upload ftp server for one annual event, so.

Learned some things and thanks again . Götz



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Re: [CentOS] vfstp and renaiming of files with ftp client

[Götz Reinicke - IT Koordinator]

Am 13.07.17 um 17:10 schrieb Tris Hoar:
> On 13/07/2017 14:38, Götz Reinicke - IT Koordinator wrote:
>> Am 13.07.17 um 14:46 schrieb Pete Biggs:
>>>> I have a vsftp server and two users for up and download.
>>>>
>>>> If user Alice uploads a file, the owner is set to Alice as expected
>>>> "-rw-r--r-- alice ftpuploadgroup"
>>>>
>>>> Now Bob can login to the same folder and is able to rename the
>>>> uploaded
>>>> file.
>>>>
>>>> Bob can also rename an uploaded folder, but can't rename a file in
>>>> that
>>>> folder 
>>>>
>>>> I'm confused, as I don't get why this is possible at all.
>>>>
>>> What are the permissions and ownership on the directory the uploads go
>>> in? If its group is 'ftpuploadgroup' and has group write permissions
>>> than any member of that group can rename files in that directory. If a
>>> user creates a directory, then that will have rwxr-xr-x permissions so
>>> they won't be able to rename files within that directory.
>>
>> The permissions for the upload folder are drwx-wx--- and the owner is
>> Bob group is ftpuploadgroup
>>
>> Alice is member of that group, but should only drop files in.
>>
>> The files are ownd by Alice, and I'm bit iritated, taht Bob can rename
>> tham ... as Bob only has read permision (from the group)
>>
>> The files in a subfolder have the same permissions and Bob cant change
>> tham...
>>
>>
>>  Thanks for your feedback . /G
>>
>>
>
> He does not have read only permission from the group. He is the folder
> owner and so can change things within that folder. You need to change
> the folder to something other than Bob.
> The sub dir does not have the same permissions. Alice is the owner.
>
> What is the end goal you want. E.g. Bob and Alice and can upload, Bob
> can read files both he and Alice upload but Alice can only read her
> files. Perhaps we can suggest permissions that would do what you want? 
Thanks Tris, thanks Peter,

the goal is, that the FTP server is a Dropbox for Alice, so she can
upload files and folders and is not able to see the uploaded files
(drwx-wx--- for the main older).

Bob should be able to rename the files and folders by ftp. (and of
course be able to download them.)

If this is not possible with the standad permissions, I'm fine, in the
past Users did not try to upload folders and others did not rename
...Than we look for an other workflow.

But hey, may be you have an idea on a god permission set.

Regards . Götz

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Re: [CentOS] vfstp and renaiming of files with ftp client

[Götz Reinicke - IT Koordinator]

Am 13.07.17 um 14:46 schrieb Pete Biggs:
>> I have a vsftp server and two users for up and download.
>>
>> If user Alice uploads a file, the owner is set to Alice as expected
>> "-rw-r--r-- alice ftpuploadgroup"
>>
>> Now Bob can login to the same folder and is able to rename the uploaded
>> file.
>>
>> Bob can also rename an uploaded folder, but can't rename a file in that
>> folder 
>>
>> I'm confused, as I don't get why this is possible at all.
>>
> What are the permissions and ownership on the directory the uploads go
> in? If its group is 'ftpuploadgroup' and has group write permissions
> than any member of that group can rename files in that directory. If a
> user creates a directory, then that will have rwxr-xr-x permissions so
> they won't be able to rename files within that directory.

The permissions for the upload folder are drwx-wx--- and the owner is
Bob group is ftpuploadgroup

Alice is member of that group, but should only drop files in.

The files are ownd by Alice, and I'm bit iritated, taht Bob can rename
tham ... as Bob only has read permision (from the group)

The files in a subfolder have the same permissions and Bob cant change
tham...


Thanks for your feedback . /G



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[CentOS] vfstp and renaiming of files with ftp client

[Götz Reinicke - IT Koordinator]

Hi,

I have a vsftp server and two users for up and download.

If user Alice uploads a file, the owner is set to Alice as expected
"-rw-r--r-- alice ftpuploadgroup"

Now Bob can login to the same folder and is able to rename the uploaded
file.

Bob can also rename an uploaded folder, but can't rename a file in that
folder 

I'm confused, as I don't get why this is possible at all.

Some vsftp magic? :)

Can someone explain that to me?

Thanks and regards . Götz



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[CentOS] attempt to access beyond end of device XFS Disks

[Götz Reinicke - IT Koordinator]

Hi,

I rebooted some CEPH servers with 24 HDs and do get some messages for
some of the disks:

[  519.667055] XFS (sdk1): Mounting V4 Filesystem
[  519.692307] XFS (sdk1): Ending clean mount
[  519.781975] attempt to access beyond end of device
[  519.781984] sdk1: rw=0, want=1560774288, limit=1560774287

All disks are xfs formated and currently I don't see any problem on the
CEPH side.

But I have a bad feeling.

I updated the kernel too from kernel-3.10.0-514.21.1 to
kernel-3.10.0-514.26.1, but nothing changed.

Any hints, suggestions?

Thanks & regards . Götz



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Re: [CentOS] DHCP max-lease-time maximum

[Götz Reinicke - IT Koordinator]

Thanks, I did know that and we are using this in other situations. But
as written in my third reply:

To much work every MAC I dont have to type counts.

Regards . Götz



Am 07.07.16 um 11:44 schrieb Eero Volotinen:
> Static MAC ip mapping on dhcp server?
>
> Eero
> 7.7.2016 12.38 ip. "Götz Reinicke - IT Koordinator" <
> goetz.reini...@filmakademie.de> kirjoitti:
>
> Am 06.07.16 um 18:19 schrieb John R Pierce:
>> On 7/6/2016 1:27 AM, Götz Reinicke - IT Koordinator wrote:
>>> :)  ... the long lease is for some Accesspoints which we dont like to
>>> configure static, just plug in and run.
>> why not configure reservations for those access points?
>>
>> the downside of a really long lease time is if you have to change
>> something like DNS, gateway, whatever, the clients with a really long
>> lease will not 'see' the change until 50% of hte lease time expires as
>> thats the default refresh.
>>
>>
> Hi, what do you mean with "reservations"? the APs in question just need
> an IP for connecting to the managemnt server which is in the same subnet.
>
> Thanks for your feedback . Götz
>


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Re: [CentOS] DHCP max-lease-time maximum

[Götz Reinicke - IT Koordinator]

Am 06.07.16 um 18:19 schrieb John R Pierce:
> On 7/6/2016 1:27 AM, Götz Reinicke - IT Koordinator wrote:
>> :)  ... the long lease is for some Accesspoints which we dont like to
>> configure static, just plug in and run.
>
> why not configure reservations for those access points?
>
> the downside of a really long lease time is if you have to change
> something like DNS, gateway, whatever, the clients with a really long
> lease will not 'see' the change until 50% of hte lease time expires as
> thats the default refresh.
>
>
Hi, what do you mean with "reservations"? the APs in question just need
an IP for connecting to the managemnt server which is in the same subnet.

Thanks for your feedback . Götz


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Re: [CentOS] DHCP max-lease-time maximum

[Götz Reinicke - IT Koordinator]

To much work ;) every MAC I dont have to type counts.

/G


Am 06.07.16 um 10:31 schrieb Eero Volotinen:
> How about static ip mapping on dhcp?
>
> Eero

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Re: [CentOS] DHCP max-lease-time maximum

[Götz Reinicke - IT Koordinator]

:) ... the long lease is for some Accesspoints which we dont like to
configure static, just plug in and run.

/Götz

Am 06.07.16 um 10:24 schrieb Eero Volotinen:
> DHCP uses 16 to represent an infinite lease. Try if it's supported.
> Anyway, it's insane value as year lease time :)
>
> Eero
>
> 2016-07-06 11:22 GMT+03:00 Götz Reinicke - IT Koordinator <
> goetz.reini...@filmakademie.de>:
>
>> Hi,
>>
>> I m looking for the max value for max-lease-time. would 512640 seconds
>> (1 year) work?
>>
>> Thanks . Götz
>>

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[CentOS] DHCP max-lease-time maximum

[Götz Reinicke - IT Koordinator]

Hi,

I m looking for the max value for max-lease-time. would 512640 seconds
(1 year) work?

Thanks . Götz



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Re: [CentOS] Suggestions for Config Management Tool - Thanks

[Götz Reinicke - IT Koordinator]

Hi all,

thanks for your feedback! We will check in a test which tool might be
good for us.

Regards . Götz

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[CentOS] Suggestions for Config Management Tool

[Götz Reinicke - IT Koordinator]

Hi,

we see a growing need for a better Configuration management for our servers.

Are there any known good resources for a comparison of e.g. Puppet,
Chef, Ansible etc?

What would you suggest and why? :)

Thanks and Regards . Götz

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Re: [CentOS] Network bond - one port goes down from time to time

[Götz Reinicke - IT Koordinator]

Am 29.03.16 um 13:57 schrieb Marcelo Ricardo Leitner:
> Em 29-03-2016 03:46, Götz Reinicke - IT Koordinator escreveu:
>> Am 28.03.16 um 16:23 schrieb Marcelo Ricardo Leitner:
>>> Em 28-03-2016 06:27, Götz Reinicke escreveu:
>>>> Hi,
>>>>
>>>> may be someone has an idea:
>>>>
>>>> We have three supermicron servers with two 10Gb Ports each, connected
>>>> to a cisco switch stack 1Gb ports. All are on auto speed.
>>>>
>>>> I configured a LACP bond on both sides on all servers, first with
>>>> citrix xen server.
>>>>
>>>> On one server eth0 goes down from time to time … maybe within minutes,
>>>> someday it is up for some hours.
>>>>
>>>> Two server are fine; the bond is up for 24 days(!) now without any
>>>> problem.
>>>>
>>>> Recently I installed centos 7.2 on that server in question and - bam -
>>>> eth0 is going down from time to time …
>>>>
>>>> I checked patch cables, tried an other switch port channel,
>>>> reconfigured the ports, reinstalled the os. Same behavior.
>>>>
>>>> And: We got a replacement server. Same behavior …. :)
>>>>
>>>> Currently the cisco tech guys don’t see a problem on the switch (which
>>>> is up for 3 Years now with 10+ servers connected … no problem so far),
>>>> from the citrix side I don’t get much more hints.
>>>>
>>>> In the logs i just have a Nic Link is Down … Nic Link is Up. It is
>>>> always eth0.
>>>>
>>>> Question:
>>>>
>>>> Any idea ? One suggestion was Disable all power saving features in the
>>>> server bios. Did not do that yet.
>>>>
>>>> Is there any chance to set some sort of higher debug level for that
>>>> nic/kernel/whatever to get some server os side feedback why the port
>>>> goes down?
>>>>
>>>> Regards and thanks for any hint! . Götz
>>>
>>> If you are seeing NIC Link is Down as in:
>>> [710442.668059] e1000e: enp0s25 NIC Link is Down
>>> then the NIC lost its link and bond is just protecting you as you
>>> probably didn't have any downtime due to that. IOW bonding is not the
>>> issue.
>>>
>>> Which NIC do you have on those servers?
>>
>>
>> The mainbord is a supermicro X10DRI-T with Intel X540 Dual port
>> 10GBase-T.
> 
> Okay, it's probably using ixgbe driver then.
> You may consider testing a newer kernel and see how that goes out,
> before doing too much debugging.
> You can install v4.5 using one of ELrepo's kernels at
> http://elrepo.org/linux/kernel/el7/x86_64/RPMS/
> http://elrepo.org/tiki/tiki-index.php
> There are some changes between 7.2 and that kernel that it's good to be
> tested.
> 
> Or... enable ixgbe debug, module param debug=16, and send the dmesg log,
> specially the lines around the event.

Hm,, could you give me a hint, how to enable that (at runtime) for
centos 7.2? I cant figure that out.

Would be nice. cheers . Götz


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Re: [CentOS] Network bond - one port goes down from time to time

[Götz Reinicke - IT Koordinator]

Am 29.03.16 um 11:12 schrieb John R Pierce:
> On 3/28/2016 11:44 PM, Götz Reinicke - IT Koordinator wrote:
>>> How is your interface exactly configured ?
>> TYPE=Bond   #Interface type set to bond
>> BOOTPROTO=static
>> BONDING_MASTER=yes
>> BONDING_OPTS="mode=4"  #i set mode to active-backup
>> DEFROUTE=yes
>> IPADDR="192.168.xxx.xxx"
>> NETMASK=255.255.255.0
>> GATEWAY="192.168.xxx.xxx"
>> IPV4_FAILURE_FATAL=no
>> IPV6INIT=no
>> NAME=bond0
>> DEVICE=bond0
>> ONBOOT=yes
>>
>>
>> TYPE="Ethernet"
>> MASTER=bond0
>> SLAVE=yes
>> NAME="enp4s0f0"
>> UUID="xxx"
>> DEVICE="enp4s0f0"
>> ONBOOT="yes"
>>
>> TYPE="Ethernet"
>> MASTER=bond0
>> SLAVE=yes
>> NAME="enp4s0f0"
>> UUID="xxx"
>> DEVICE="enp4s0f1"
>> ONBOOT="yes"
> 
> should both those 'ethernet' devices have the same NAME ?
> 
> 

Copy and Past error, they dont have the same name.

/Götz

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Re: [CentOS] Network bond - one port goes down from time to time

[Götz Reinicke - IT Koordinator]

Am 28.03.16 um 16:23 schrieb Marcelo Ricardo Leitner:
> Em 28-03-2016 06:27, Götz Reinicke escreveu:
>> Hi,
>>
>> may be someone has an idea:
>>
>> We have three supermicron servers with two 10Gb Ports each, connected
>> to a cisco switch stack 1Gb ports. All are on auto speed.
>>
>> I configured a LACP bond on both sides on all servers, first with
>> citrix xen server.
>>
>> On one server eth0 goes down from time to time … maybe within minutes,
>> someday it is up for some hours.
>>
>> Two server are fine; the bond is up for 24 days(!) now without any
>> problem.
>>
>> Recently I installed centos 7.2 on that server in question and - bam -
>> eth0 is going down from time to time …
>>
>> I checked patch cables, tried an other switch port channel,
>> reconfigured the ports, reinstalled the os. Same behavior.
>>
>> And: We got a replacement server. Same behavior …. :)
>>
>> Currently the cisco tech guys don’t see a problem on the switch (which
>> is up for 3 Years now with 10+ servers connected … no problem so far),
>> from the citrix side I don’t get much more hints.
>>
>> In the logs i just have a Nic Link is Down … Nic Link is Up. It is
>> always eth0.
>>
>> Question:
>>
>> Any idea ? One suggestion was Disable all power saving features in the
>> server bios. Did not do that yet.
>>
>> Is there any chance to set some sort of higher debug level for that
>> nic/kernel/whatever to get some server os side feedback why the port
>> goes down?
>>
>> Regards and thanks for any hint! . Götz
> 
> If you are seeing NIC Link is Down as in:
> [710442.668059] e1000e: enp0s25 NIC Link is Down
> then the NIC lost its link and bond is just protecting you as you
> probably didn't have any downtime due to that. IOW bonding is not the
> issue.
> 
> Which NIC do you have on those servers?


The mainbord is a supermicro X10DRI-T with Intel X540 Dual port 10GBase-T.

regards . Götz






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Re: [CentOS] Network bond - one port goes down from time to time

[Götz Reinicke - IT Koordinator]

Am 28.03.16 um 12:12 schrieb Leon Fauster:
> Am 28.03.2016 um 11:27 schrieb Götz Reinicke :
>> We have three supermicron servers with two 10Gb Ports each, connected to a 
>> cisco switch stack 1Gb ports. All are on auto speed.
>>
>> I configured a LACP bond on both sides on all servers, first with citrix xen 
>> server. 
>>
>> On one server eth0 goes down from time to time … maybe within minutes, 
>> someday it is up for some hours.
>>
>> Two server are fine; the bond is up for 24 days(!) now without any problem.
>>
>> Recently I installed centos 7.2 on that server in question and - bam - eth0 
>> is going down from time to time …
>>
>> I checked patch cables, tried an other switch port channel, reconfigured the 
>> ports, reinstalled the os. Same behavior.
>>
>> And: We got a replacement server. Same behavior …. :)
>>
>> Currently the cisco tech guys don’t see a problem on the switch (which is up 
>> for 3 Years now with 10+ servers connected … no problem so far), from the 
>> citrix side I don’t get much more hints.
>>
>> In the logs i just have a Nic Link is Down … Nic Link is Up. It is always 
>> eth0.
>>
>> Question:
>>
>> Any idea ? One suggestion was Disable all power saving features in the 
>> server bios. Did not do that yet.
>>
>> Is there any chance to set some sort of higher debug level for that 
>> nic/kernel/whatever to get some server os side feedback why the port goes 
>> down?
> 
> 
> How is your interface exactly configured ? 


TYPE=Bond   #Interface type set to bond
BOOTPROTO=static
BONDING_MASTER=yes
BONDING_OPTS="mode=4"  #i set mode to active-backup
DEFROUTE=yes
IPADDR="192.168.xxx.xxx"
NETMASK=255.255.255.0
GATEWAY="192.168.xxx.xxx"
IPV4_FAILURE_FATAL=no
IPV6INIT=no
NAME=bond0
DEVICE=bond0
ONBOOT=yes


TYPE="Ethernet"
MASTER=bond0
SLAVE=yes
NAME="enp4s0f0"
UUID="xxx"
DEVICE="enp4s0f0"
ONBOOT="yes"

TYPE="Ethernet"
MASTER=bond0
SLAVE=yes
NAME="enp4s0f0"
UUID="xxx"
DEVICE="enp4s0f1"
ONBOOT="yes"


/Götz



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[CentOS] strange diskspace consuming

[Götz Reinicke - IT Koordinator]

Hi,

I do a tgz-backup some maildir-folders with n*1000 off files and a lot
of GB in storage. The backuped maildirs are removed after the tar.

My assumption was, that the free diskspace should be bigger after that,
but from what I get with df, it looks like I'm loosing space.

Currently the tgz is saved on the same disk/mountpoint.

Any hint, why removing the maildirs dont free diskspace as expected?

It is still an ext3 filesystme

Regards and thanks for hints . Götz

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[CentOS] OpenLDAP on Centos/RHEL 6 still without openssl support?

[Götz Reinicke - IT Koordinator]

Hi,

I heard that the RHEL/Centos rpm packages of OpenLDAP 2.4 should support
openssl and file pathes to the certs/keys in the online config too.

But from the RHEL Documentation it is stated, that still ONLY Mozilla
NSS DB Files are supported.

Can anyone comment on that? Is that true?

Thanks and Regards . Götz

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Staatssekretär im Ministerium für Wissenschaft,
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[CentOS] rsync stuck at +- 50 MB/s, cp and scp are +- 200 MB/s

[Götz Reinicke - IT Koordinator]

Hi,

i have two servers, connected to to the lan by 10Gb with 10Gb and DAS
hardware raid.

Each system con read and write locally or to the 10G iscsi by more than
200 MB/s.

Now I have to transfer backups form A to B and doing this with rsync
always stuck at +- 48-50MB/s no matter which options, compressions,
encryption etc I use. Even the plain default rsync is at that 50 Mb limit.

coyp by scp goes up to 200 MB/s.

Copy from and to my workstation with scp from or to both servers is at
1Gb limit (so +- 100 MB/s)


Why is rsync stuck at +- 50 MB/s ? Any suggestions hints ...

Thanks and regards . Götz

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Staatssekretär im Ministerium für Wissenschaft,
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Geschäftsführer: Prof. Thomas Schadt

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[CentOS] NSS Tools certutil buggy ? Centos 6 nss-tools-3.18.0

[Götz Reinicke - IT Koordinator]

Hi,

I try to add a certificate to a fresh certificate db, but the trust
attributes are not set as expected. Neither can I change tham.

The cert/pem is valid and double checked :)


Any idea/suggestion?


certutil -N -d certdb-test

certutil -A -n foobar -t u,u,u -d certdb-test/ -i foobar.pem

certutil -L -d certdb-test/


Certificate NicknameTrust Attributes
SSL,S/MIME,JAR/XPI
foobar ,,



certutil -M -n foobar -t u,u,u -d /tmp/certdb-test/


certutil -L -d certdb-test/

Certificate NicknameTrust Attributes
SSL,S/MIME,JAR/XPI
foobar ,,





Thanks and regards . Götz

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Staatssekretär im Ministerium für Wissenschaft,
Forschung und Kunst Baden-Württemberg

Geschäftsführer: Prof. Thomas Schadt

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Re: [CentOS] Mysql 5.6, Centos 7 and errno: 24 - Too many open files

[Götz Reinicke - IT Koordinator]

Hi,

as that example is for maria db, teh oracle mysql rpm dose not ship with
something like

/etc/systemd/system/mysqld.service.d

Can I just create /etc/systemd/system/mysqld.service.d/limits.conf and
than I'm ready to go?

Thanks for your patience and regards . Götz

Am 29.04.15 um 14:58 schrieb Johan Kooijman:
 Gotz,
 
 This is due to systemd, it overrules your settings. Add a file to systemd
 config fixes it:
 
 [root@mysql2 ~]# cat /etc/systemd/system/mariadb.service.d/limits.conf
 [Service]
 LimitNOFILE=1
 LimitMEMLOCK=1



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Re: [CentOS] Mysql 5.6, Centos 7 and errno: 24 - Too many open files

[Götz Reinicke - IT Koordinator]

+1 Thanks! That was a little bit confusing at first.

Regards . Götz

Am 30.04.15 um 04:21 schrieb carlh04...@gmail.com:
 Thank you for clarifying this, Johan. Very much appreciated!
 
 On Wed, 29 Apr 2015 22:28:00 +0200
 Johan Kooijman wrote:
 
 Carl,

 By default my.cnf has to obey the OS limits, so in this case the
 order is: systemd  /etc/security/limits*  /etc/my*.
...


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[CentOS] Mysql 5.6, Centos 7 and errno: 24 - Too many open files

[Götz Reinicke - IT Koordinator]

Hi,

may be somewon has a working solution and information on that:

I installed the most recent mysql community on a server and do get a lot
of errno: 24 - Too many open files.

There are suggestions to increase the open_files_limit, change/add that
to /etc/security/limits.conf and modify the systemd script by hand.

Depending on how you start mysql (restart, or at systemboot time ...)
the limit get set or not.

Question: Is that may be a known bug or something?

And thats mit a question regarding mariadb or mysql.

Regards . Götz
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[CentOS] NFS Stale file handle drives me crazy (Centos 6)

[Götz Reinicke - IT Koordinator]

Hi folks,

I have a Centos 6 NFS server, which dirves me crazy.

The directory I try to export cant be accessed by different clients.

I tried a centos 7, centos 6 and a pool of vmware esxi 5.5 systems.

At the client side I get errors like:

mount.nfs: Stale file handle

or Sysinfo set operation VSI_MODULE_NODE_mount failed with the tatus
Unable to query remote mount point's attributes.


On the server I get messages in the log like

svc: 172.17.252.35, port=851: unknown version (0 for prog 13, nfsd)

rpc.mountd[1927]: authenticated mount request from 


The curious thing is, that other directories exported on the same
filesysten can be exported.


so /home/stuff works /home/students fails. chmode 777 is set,
/etc/exports is double checked. nfs/rpc/etc is up and running. selinux 
firewall for debugging off.

I use xfs on all shared filesystems.

Googling for VMWARE and native NFS suggestions did not help so far :-/

Any hint or suggestion is very very welcome! Regard  thanks . Götz

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[CentOS] network copy performance is poor (rsync) - debugging suggestions?

[Götz Reinicke - IT Koordinator]

Hi,

I do have two centos 6.6 servers. With a performance optimized rsync I
get an speed of 15 - 20 MB/s

The options I use are:

rsync -aHAXxv --numeric-ids --progress -e ssh -T -c arcfour -o
Compression=no -x

If I copy files by smb to/from the servers I do get 60 - 80 MB/s, a dd
(r/w) on the storages attached gives 90 MB/s on the 1Gbit ISCSI (Source
Server) and up to 600MB/s on the 10Gbit ISCSI (Destination Server) storage.

Both servers have plenty of memory and cpu usage looks low.

Currently we dont use jumbo frames. Network over all usage is moderate
to low. There are no special sysctl tweeks yet in use.

As mentioned, I'm confused that even with SMB I do get 3 to 4 times
better performance.

Any hint and suggestion to track that problem down is welcome!

Thanks and best regards . Götz

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Re: [CentOS] Actual complaining: nixspam

[Götz Reinicke - IT Koordinator]

Am 08.10.14 um 23:07 schrieb John R. Dennison:
 On Wed, Oct 08, 2014 at 05:04:45PM -0400, m.r...@5-cent.us wrote:

 Well, no: they tell me that they are *billed* for each major incident.
 
 There is a legal term that applies to this use case: extortion


AFAIK IX is not billing  They do a great job for couple of years.

The problem might be m.roths provider, if they have a zombi spam system
somewhere and dynamic IPs e.g. they can be put on the list.

http://www.heise.de/ix/NiX-Spam-DNSBL-and-blacklist-for-download-499637.html

If your mail server is affected by our blacklist please ask your
internet service provider or your network administrator to shut down the
spam source in your network because this is the blacklisting reason.
Follow the removal instructions on www.dnsbl.manitu.net if you need to
speed up the delisting process.


my2cents /Götz

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Re: [CentOS] Actual complaining: nixspam

[Götz Reinicke - IT Koordinator]

Am 19.11.14 um 15:31 schrieb m.r...@5-cent.us:
 Götz Reinicke - IT Koordinator wrote:
 Am 08.10.14 um 23:07 schrieb John R. Dennison:
 On Wed, Oct 08, 2014 at 05:04:45PM -0400, m.r...@5-cent.us wrote:

 Well, no: they tell me that they are *billed* for each major incident.

 There is a legal term that applies to this use case: extortion

 AFAIK IX is not billing  They do a great job for couple of years.
 
 They have NOT been doing a great job for many years. Back around 2000 or
 2001, Cogeco in Canada was using them... and they blocked Chicago
 Roadrunner, which was *the* ISP for most of the city of Chicago, one of
 the three largest cities in the US (competition? what's that?) Right now,
 hostmonster, my hosting provider, uses a primary mailserver to send from
 their literal millions of domains (I got that figure from their tech
 support), and it was hostmonster's tech support that told me they were
 paying something like $150 per incident to get themselves removed - I
 assume this is when nixspam claims they've got too many complaints for me
 to remove myself. In ANY large hosting provider, anyone can buy a domain
 and start spamming in hours, if not minutes, and I challenge you to show
 me a large hosting provider that does not have this problem.
 

So some tech support tells you something, and you believe him for 100%?
Go and get some real prove.

 Twenty years ago, when there were thousands of small ISPs, nixspam's
 method made sense. With the mergers, and the near-death of small ISPs,
 it's an *idiot's* idea. Plus, they don't offer a whitelist, to get one's
 self listed, for love or money.

If it is such and idiot's idea, why are they still so famous and widely
used?

 
 No, they're assholes, using a methodology that's 15+ years out of date.
 And, I'll note, even the CentOS list gets spam, in spite of nixspam.

Uh. your rudeness gives an deep insight of your state of mind and your
POV. masterstroke to be taken seriously!


 The problem might be m.roths provider, if they have a zombi spam system
 somewhere and dynamic IPs e.g. they can be put on the list.
 
 See above. Perhaps you don't understand the current business model of
 large hosting providers, and the reality of what they have to deal with.

I know that and a lot of them (still) suck. We hat all over Germany
problems couple of years ago with phone companies like eplus and cable
tv providers as ISPs getting an RBLs etc. Still web.de, 11 and gmx with
++45 millions of mail accounts suck in some ways (currently we are
investigating such an issue.)


 http://www.heise.de/ix/NiX-Spam-DNSBL-and-blacklist-for-download-499637.html

 If your mail server is affected by our blacklist please ask your
 internet service provider or your network administrator to shut down the
 spam source in your network because this is the blacklisting reason.
 Follow the removal instructions on www.dnsbl.manitu.net if you need to
 speed up the delisting process.
 
 Wait, *YOUR* blacklist? Are you actually affiliated with nixspam? If so,
 then add a significant number of curses and insults, because you have *NO*
 answer to what I say, above. And, btw, when are you going to block, say,
 yahoo's mailservers?

//very confused head-shaking//

Read all information provided, than start shouting ... if you where
interested in a objective discussion and problem solving you would have
opened the link and read the text and would have seen that this is a
quote. sorry that I forgot to mark and underline and point this out that
a  like you can see this.

Over and out. my last2cents on this.

/Götz

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Re: [CentOS] 10 Gbps adapter recommendation

[Götz Reinicke - IT Koordinator]

Am 11.11.14 um 10:22 schrieb Nux!:
 Hi guys,
 
 I'm yet to use 10 Gbps with CentOS, hence my question. I'm looking for a 
 cheap (doh) adapter that won't cause me problems with CentOS. Any 
 recommendations?

I'd say, depends on what you wanna do with it; e.g. iscsi trafic too,
how mayn ports, copper or sfp+?

We have intel and emulex (including hardware iscsi) cards in use and no
trouble so far. Depending on the intended purpose.

/Götz

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Re: [CentOS] strange disk space calculation ext4 df and du

[Götz Reinicke - IT Koordinator]

Am 03.11.14 um 19:54 schrieb Jonathan Billings:
 On Mon, Nov 03, 2014 at 04:53:05PM +0100, Götz Reinicke - IT Koordinator 
 wrote:
 in one server I do have a SSD raid 1 size 219GB.

 df shows 9.4 GB free, 198GB used.

 If I do du -sch * | sort -h -r on /, I just have close to 3.5GB used 

 Any hints, what's eating up the space?
 
 Deleted files (check out the output of 'lsof' and look for deleted
 files)?  This happens a lot when your log rotation system rotates a
 log but the daemon logging to it isn't restarted or told to use the
 new log files.
 
 Also, you could have sparse files (read the man page for 'du' under
 --apparent-size) that appear to be using more space than 'du' normally
 reports. 
 

Hi, I checked your suggestions but still no clue what might be wrong.

lsof reports just two DEL Files sshd  /dev/zero and a du with
--apparent-size shows the same result.

still wondering ... Regards . Götz

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Re: [CentOS] strange disk space calculation ext4 df and du

[Götz Reinicke - IT Koordinator]

Am 04.11.14 um 08:45 schrieb Rick Thomas:
 On Nov 3, 2014, at 7:53 AM, Götz Reinicke - IT Koordinator 
 goetz.reini...@filmakademie.de wrote:
 
 Hi,

 in one server I do have a SSD raid 1 size 219GB.

 df shows 9.4 GB free, 198GB used.

 If I do du -sch * | sort -h -r on /, I just have close to 3.5GB used 

 Any hints, what's eating up the space?

 Centos 6.6, fs = ext4.

  regards . Götz
 
 The ext[234] filesystems reserve a certain amount of space for use by root 
 only.  If I remember correctly, the default if 5%, but you can tune that with 
 tune2fs(8) or mkfs.ext4(8). The df command subtracts the reserved space when 
 it shows the amount free.  So an empty 1GB filesystem would show as having 
 950 MB free.


Hi thanks, I'm aware of that, and in my case that would be as if 95% are
reserved for root. Currently I miss 195 +- GB 

Regards . Götz

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Re: [CentOS] strange disk space calculation ext4 df and du

[Götz Reinicke - IT Koordinator]

Am 04.11.14 um 09:43 schrieb Peter Kjellström:
 On Mon, 03 Nov 2014 16:53:05 +0100
 Götz Reinicke - IT Koordinator goetz.reini...@filmakademie.de wrote:
 
 ...
 df shows 9.4 GB free, 198GB used.

 If I do du -sch * | sort -h -r on /, I just have close to 3.5GB
 used 
 
 Next thing to check is stuff hiding under mount points. That is for
 example the /tmp directory on the root fs containing stuff but another
 fs then mounted on /tmp hiding that.

df -h

FilesystemSize  Used Avail Use% Mounted on
/dev/mapper/vg_richter2-lv_root
  219G  198G  9,3G  96% /
tmpfs  16G 0   16G   0% /dev/shm
/dev/sda1 477M   49M  403M  11% /boot
/dev/sdb  8,2T  1,1T  7,1T  14% /srv/files

so I dont see any hidden fs under / beside /srv/files, which is not
included in my du calculation.

Thanks and regards for more hints ... /Götz

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Re: [CentOS] strange disk space calculation ext4 df and du - SOLVED

[Götz Reinicke - IT Koordinator]

Am 04.11.14 um 14:11 schrieb Leon Fauster:
 Am 04.11.2014 um 10:40 schrieb Götz Reinicke - IT Koordinator 
 goetz.reini...@filmakademie.de:
 Am 04.11.14 um 09:43 schrieb Peter Kjellström:
 On Mon, 03 Nov 2014 16:53:05 +0100
 Götz Reinicke - IT Koordinator goetz.reini...@filmakademie.de wrote:

 ...
 df shows 9.4 GB free, 198GB used.

 If I do du -sch * | sort -h -r on /, I just have close to 3.5GB
 used 

 Next thing to check is stuff hiding under mount points. That is for
 example the /tmp directory on the root fs containing stuff but another
 fs then mounted on /tmp hiding that.

 df -h

 FilesystemSize  Used Avail Use% Mounted on
 /dev/mapper/vg_richter2-lv_root
  219G  198G  9,3G  96% /
 tmpfs  16G 0   16G   0% /dev/shm
 /dev/sda1 477M   49M  403M  11% /boot
 /dev/sdb  8,2T  1,1T  7,1T  14% /srv/files

 so I dont see any hidden fs under / beside /srv/files, which is not
 included in my du calculation.
 
 
 hidden stuff not hidden fs - just unmount /boot + /srv/files and check 
 the emptiness in this directories.

@-) Thanks 100 kowtows; under /srv there was hidden stuff (195GB)

case closed. /Götz

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[CentOS] strange disk space calculation ext4 df and du

[Götz Reinicke - IT Koordinator]

Hi,

in one server I do have a SSD raid 1 size 219GB.

df shows 9.4 GB free, 198GB used.

If I do du -sch * | sort -h -r on /, I just have close to 3.5GB used 

Any hints, what's eating up the space?

Centos 6.6, fs = ext4.

regards . Götz

-- 
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E-Mail goetz.reini...@filmakademie.de

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Vorsitzender des Aufsichtsrats: Jürgen Walter MdL
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Re: [CentOS] squid proxy, https and apple store - SOLVED

[Götz Reinicke - IT Koordinator]

Am 11.06.14 17:57, schrieb Arun Khan:
 On Wed, Jun 11, 2014 at 7:18 PM, Götz Reinicke - IT Koordinator
 goetz.reini...@filmakademie.de wrote:
 Am 11.06.14 15:43, schrieb Arun Khan:

 CentOS version?

 old one 5.10

 Squid version?

 squid-2.6.STABLE21-6.el5


 FWIW, Squid2 supports http 1.0 and Squid3 supports http1.1.

 My team faced similar issues with Debian (Wheezy) + Squid2.  Switched
 to Squid3 and the problems went away.

 O.K. may be I'll try 3.x if not someone knows somthing different.

 
 And let us know if it resolves your problem.

Hi,

I checked the old config again and cant find any misconfiguration and
did not get any more feedback.

On a centos 6.x system I installed as suggested squid3 (squid-3.1.19)
from http://people.redhat.com/jskala/squid/ using my squid2 config.

No problems so far and I can access the Apple app store with the Apple
app store app within OS X.

Problem solved!

Thanks very much for that hint . Regards . Götz

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[CentOS] XFS project quota and samba

[Götz Reinicke - IT Koordinator]

Hi,

I managed to configure project quotas on a xfs device on a centos 6.5
server. (just pquota in fstab, no grquota, rebooted server)

Reporting the quota settings and usage looks good.

But mounting a smb-share with the proect quota enabled on my os x client
shows much less space used (3GB) and 0% free.

Currently 650 GB are used, the quota limit is set to 1TB.

My user I'm mounting the smb-share has no quota limits set.

The users are in ldap.

Any suggestions or hints what might be wrong?

Thanks and best regards . Götz
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[CentOS] squid proxy, https and apple store

[Götz Reinicke - IT Koordinator]

Hi,

I'm a bit confused regarding the connection of a Mac OS X system to the
app store by the app store client.

Squid is configured using ncsa_auth and I can access https and http
websites without a problem.

But the app store app is not logging in. I do get

== /var/log/squid/cache.log ==
2014/06/11 13:23:10| The request CONNECT p12-buy.itunes.apple.com:443 is
DENIED, because it matched 'ncsa_users'
2014/06/11 13:23:10| The reply for CONNECT p12-buy.itunes.apple.com:443
is ALLOWED, because it matched 'ncsa_users'
2014/06/11 13:23:10| The request CONNECT p12-buy.itunes.apple.com:443 is
ALLOWED, because it matched 'CONNECT'


in my squid logfile.

Any hints or suggestions? Regards . Götz

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IT-Koordinator

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Re: [CentOS] squid proxy, https and apple store

[Götz Reinicke - IT Koordinator]

Am 11.06.14 14:02, schrieb mark:
 On 06/11/14 07:45, Götz Reinicke - IT Koordinator wrote:
 Hi,

 I'm a bit confused regarding the connection of a Mac OS X system to the
 app store by the app store client.
 
 Hi,
 
 I'm a bit confused as to why you're posting a Mac OSX question, and one 
 that I assume deals with the Apple app store, to the CentOS mailing list?
 

Hi, now I'm confused, so you say, my squid configuration is correct and
i should be able to connect to the service?

/Götz


 Squid is configured using ncsa_auth and I can access https and http
 websites without a problem.

 But the app store app is not logging in. I do get

 == /var/log/squid/cache.log ==
 2014/06/11 13:23:10| The request CONNECT p12-buy.itunes.apple.com:443 is
 DENIED, because it matched 'ncsa_users'
 2014/06/11 13:23:10| The reply for CONNECT p12-buy.itunes.apple.com:443
 is ALLOWED, because it matched 'ncsa_users'
 2014/06/11 13:23:10| The request CONNECT p12-buy.itunes.apple.com:443 is
 ALLOWED, because it matched 'CONNECT'


 in my squid logfile.

 Any hints or suggestions? Regards . Götz

-- 
Götz Reinicke
IT-Koordinator

Tel. +49 7141 969 82 420
E-Mail goetz.reini...@filmakademie.de

Filmakademie Baden-Württemberg GmbH
Akademiehof 10
71638 Ludwigsburg
www.filmakademie.de

Eintragung Amtsgericht Stuttgart HRB 205016

Vorsitzender des Aufsichtsrats: Jürgen Walter MdL
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Re: [CentOS] squid proxy, https and apple store

[Götz Reinicke - IT Koordinator]

Am 11.06.14 15:43, schrieb Arun Khan:
 On Wed, Jun 11, 2014 at 5:15 PM, Götz Reinicke - IT Koordinator
 goetz.reini...@filmakademie.de wrote:
 I'm a bit confused regarding the connection of a Mac OS X system to the
 app store by the app store client.

 Squid is configured using ncsa_auth and I can access https and http
 websites without a problem.

 
 CentOS version?

old one 5.10

 Squid version?

squid-2.6.STABLE21-6.el5

 
 FWIW, Squid2 supports http 1.0 and Squid3 supports http1.1.
 
 My team faced similar issues with Debian (Wheezy) + Squid2.  Switched
 to Squid3 and the problems went away.

O.K. may be I'll try 3.x if not someone knows somthing different.

Thanks! Regards . Götz
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Re: [CentOS] xfs and user quota

[Götz Reinicke - IT Koordinator]

Am 24.05.14 00:32, schrieb Ulf Volmer:
 
 On 23.05.2014 13:53, Götz Reinicke - IT Koordinator wrote:
  xfs_quota -x -c 'limit bsoft=2m bhard=22000m username' /home

 would set the quota for that user.

 But I do get an error:

  Command limit not found.
 The error message looks like you are confounding single quotes with 
 backticks

Hi,

its a bug:

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=634952

xfsprogs: xfs_quota commands are internationalized

Dont know if redhat is planing to fix that to.

Regards . Götz

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Fax  +49 7141 969 55 420
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Vorsitzender des Aufsichtsrats:
Jürgen Walter MdL
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Geschäftsführer:
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[CentOS] xfs and user quota

[Götz Reinicke - IT Koordinator]

Hi,

I try to enable userquota an a new xfs filesystem.

Its centos 6.5, the filesystem is mounted with usrquota, the server was
rebooted.

I thought

xfs_quota -x -c 'limit bsoft=2m bhard=22000m username' /home

would set the quota for that user.

But I do get an error:

Command limit not found.


Did I miss something?


Any hints/how to beside the official sgi xfs and redhat doc would be nice.

Regards . Götz

-- 
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E-Mail goetz.reini...@filmakademie.de

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Re: [CentOS] Ext4 mess .... and EXT4-fs error (device sdc): ext4_mb_generate_buddy - SOLVED

[Götz Reinicke - IT Koordinator]

Hi,

if anybody wondered what happend:

One logic volume on the iscsi storage was configured to two different
LUNs, the second LV was not connected at all.

So the server was logged in to the same LV and at some point the Journal
got messed etc ...

Regards . Götz

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E-Mail goetz.reini...@filmakademie.de

Filmakademie Baden-Württemberg GmbH
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[CentOS] Ext4 mess .... and EXT4-fs error (device sdc): ext4_mb_generate_buddy

[Götz Reinicke - IT Koordinator]

Hi,
I'm faced with a very strange behaviour:

Centos 6.5 server, Hardware ISCSI HBA from Emulex OneConnect, most
recent drivers and firmware from emulex installed.

Directly attached a 10G ISCSI Storage from QSan. Two Raid volumes, Raid
5, 8 Disks each at 2 TB so 14 TB each logic raid volume.

Both volumes are logged in and usable as sdb and sdc to the server.

Formatted with ext4  -m 0 -v /dev/sd...

Now I copied about 600 GB from an old server to one of the new volumes.
No problems at all.

But moving other data from the old server to the second volume shows the
error in the logs:

EXT4-fs error (device sdc): ext4_mb_generate_buddy: EXT4-fs: group 2592:
0 blocks in bitmap, 24544 in gd

group grows by 16.

But the more strange thing I realised today is, that all the data on the
first volume (on sdb) shows up on sdc as well + the new data too.

Now I'm totally confused and currently there are no more messages in the
system log.

The files on sdc don't show up on sdb!

If I do e.g. a md5sum on the files on both volumes they are the same as
is the contents of e.g. some textfiles I checked.

May be someone has an idea what might cause

a) the error and
b) why dose the data from sdb also shows up on sdc?

b) also occurred also with the original redhat/centos driver for the
ISCSI HBA.

May be I have to use partitions and not the whole device or LVM, ... xfs?

Other storages from Qsan dont show that problem and other storages with
bigger filesystems or e.g. xfs are o.k. too.


confused regards . Götz
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[CentOS] suggestions for large filesystem server setup (n * 100 TB)

[Götz Reinicke - IT Koordinator]

Hi,

over time the requirements and possibilities regarding filesystems
changed for our users.

currently I'm faced with the question:

What might be a good way to provide one big filesystem for a few users
which could also be enlarged; backuping the data is not the question.

Big in that context is up to couple of 100 TB may be.

O.K. I could install one hardware raid with e.g. N big drives format
with xfs. And export one big share. Done.

On the other hand, e.g. using 60 4 TB Disks in one storage would be a
lot of space, but a nightmare in rebuilding on a disk crash.

Now if the share fills up, my users complain, that they usually get a
new share (what is a new raidbox).

From my POV I could e.g. use hardware raidboxes, and use LVM and
filesystem growth options to extend the final share, but what if one of
the boxes crash totally? The whole Filesystem would be gone.

hm.

So how do you handle big filesystems/storages/shares?

Regards . Götz

-- 
Götz Reinicke
IT-Koordinator

Tel. +49 7141 969 82 420
E-Mail goetz.reini...@filmakademie.de

Filmakademie Baden-Württemberg GmbH
Akademiehof 10
71638 Ludwigsburg
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Eintragung Amtsgericht Stuttgart HRB 205016

Vorsitzender des Aufsichtsrats: Jürgen Walter MdL
Staatssekretär im Ministerium für Wissenschaft,
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Re: [CentOS] What is eating up Swap - Thanks to all feedback

[Götz Reinicke - IT Koordinator]

Am 10.12.13 17:18, schrieb John R Pierce:
 On 12/10/2013 6:01 AM, Götz Reinicke - IT Koordinator wrote:
 recently I noticed, that one of our webservers is using swap space,
 while there is plenty of physical ram available.

 free -m
   total   used   free sharedbuffers cached
 Mem:  8118   2014   6103  0 85261
 -/+ buffers/cache:   1667   6450
 Swap: 8197 77   8119


 It's not that much, but why?
 
 during idle time, dirty pages will be written to swap so they can then 
 be discarded if needed.   ignore it, it means nothing

Hi thanks to all feedbacks, I'f found that the httpd is eating up swap;
currently about 500MB while 4GB RAM are still free.

I'll look into that.

Regard . Götz
-- 
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IT-Koordinator

Tel. +49 7141 969 82 420
E-Mail goetz.reini...@filmakademie.de

Filmakademie Baden-Württemberg GmbH
Akademiehof 10
71638 Ludwigsburg
www.filmakademie.de

Eintragung Amtsgericht Stuttgart HRB 205016

Vorsitzender des Aufsichtsrats: Jürgen Walter MdL
Staatssekretär im Ministerium für Wissenschaft,
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[CentOS] What is eating up Swap

[Götz Reinicke - IT Koordinator]

Hi,

recently I noticed, that one of our webservers is using swap space,
while there is plenty of physical ram available.

free -m
 total   used   free sharedbuffers cached
Mem:  8118   2014   6103  0 85261
-/+ buffers/cache:   1667   6450
Swap: 8197 77   8119


It's not that much, but why?

Any ideas how to debug that? Thanks for any hint and suggestion.

/Götz

-- 
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IT-Koordinator

Tel. +49 7141 969 82 420
E-Mail goetz.reini...@filmakademie.de

Filmakademie Baden-Württemberg GmbH
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www.filmakademie.de

Eintragung Amtsgericht Stuttgart HRB 205016

Vorsitzender des Aufsichtsrats: Jürgen Walter MdL
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Re: [CentOS] Filesystem labeling confusion or mess up

[Götz Reinicke - IT Koordinator]

Hi Cliff,

theer is just one path; I rechecked. The storage and server are attached
currently direct with one twinaxial cable and just one ip on each side.

Multipathing was never configured.

I'm confused.

Currently I reattached the targets and reformatted the devices.

in dmesg I just see one sdb and one sdc.

sda is the internal disk and no more disk devices show up e.g. with
fdisk -l.

Any more suggestions or thoughts?

/Götz

Am 26.11.13 23:08, schrieb Cliff Pratt:
 Looks like you have more than one path to the devices. I would expect to
 see *4* devices.
 
 Cheers,
 
 Cliff
 
 
 On Wed, Nov 27, 2013 at 2:36 AM, Götz Reinicke - IT Koordinator 
 goetz.reini...@filmakademie.de wrote:
 
 Hi,

 I do have an iscsi storage with two raidsets. I'm logged in to the
 target and get two devices: /dev/sdb and /dev/sdc.

 After formatting the devices with ext4 I realised, that I had used a
 wrong label, so I tried to relabel the devices.

 But now I'm confused:

 doing a e2label /dev/sdb or /dev/sdc returns always the same label name
 for both devices.

 so I did  e2label /dev/sdb students and e2label /dev/sdc staff and
 now mounting the devices shows the same filesystem under sdb and sdc!

 Looks like sdc (an empty device) is gone...


 Any suggestions or explanations?

 Thanks and best regards . Götz
...


-- 
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IT-Koordinator

Tel. +49 7141 969 82 420
E-Mail goetz.reini...@filmakademie.de

Filmakademie Baden-Württemberg GmbH
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Vorsitzender des Aufsichtsrats: Jürgen Walter MdL
Staatssekretär im Ministerium für Wissenschaft,
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[CentOS] Filesystem labeling confusion or mess up

[Götz Reinicke - IT Koordinator]

Hi,

I do have an iscsi storage with two raidsets. I'm logged in to the
target and get two devices: /dev/sdb and /dev/sdc.

After formatting the devices with ext4 I realised, that I had used a
wrong label, so I tried to relabel the devices.

But now I'm confused:

doing a e2label /dev/sdb or /dev/sdc returns always the same label name
for both devices.

so I did  e2label /dev/sdb students and e2label /dev/sdc staff and
now mounting the devices shows the same filesystem under sdb and sdc!

Looks like sdc (an empty device) is gone...


Any suggestions or explanations?

Thanks and best regards . Götz

-- 
Götz Reinicke
IT-Koordinator

Tel. +49 7141 969 82 420
E-Mail goetz.reini...@filmakademie.de

Filmakademie Baden-Württemberg GmbH
Akademiehof 10
71638 Ludwigsburg
www.filmakademie.de

Eintragung Amtsgericht Stuttgart HRB 205016

Vorsitzender des Aufsichtsrats: Jürgen Walter MdL
Staatssekretär im Ministerium für Wissenschaft,
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[CentOS] strange speed of mkfs Centos vs. Debian

[Götz Reinicke - IT Koordinator]

Hi,

I'm testing a storage system and different network settings and I'm
faced with a strange phenomen.

Doing a mkfs.ext4 on the centos server lasts 11 minutes.

The same mkfs.ext4 command on the debian installation is done in 20 seconds.

It is formatting a 14 TB 10Gbit ISCSI Target.

It is the same server. Centos and debian are installed on different
internal harddisks.

Any explanations why debian is so f*** fast? Any hint?

Regards . Götz

-- 
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Tel. +49 7141 969 82 420
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[CentOS] how to calculate mail storage/traffic used

[Götz Reinicke - IT Koordinator]

Hi,

we have to setup a server which gets a copy of all messages send and
received by our mailserver as a 1:1 copy. Mails send to multiple
recipients should be calculated and saved per user. (great if you
usually have lost of mails send to groups of people.)

So no dedublication should be used here. (e.g. save the message and
refer the different recipients to it.)

How can I calculate the current traffic in the best way to extrapolate
the amount of space to be planed for the new server?

We think to have a couples of days to be saved.

Thanks for any hint or comment. Regards Götz

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Fax  +49 7141 969 55 420
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Eintragung Amtsgericht Stuttgart HRB 205016

Vorsitzender des Aufsichtsrats: Jürgen Walter MdL
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[CentOS] cleaning up some LVM stuff

[Götz Reinicke - IT Koordinator]

Hi,

one more LVM thing:

on one server some LVM stores are physically removed but still there are
some informatione somwher spread adcross teh server.

e.g. if I do a vgdisplay  or pvcreat I get an error regarding that old
storage:

  /dev/raid_10/lvol0: read failed after 0 of 4096 at 14000515383296:
Eingabe-/Ausgabefehler

How can I remove all information?

Thanks for any hint. Regards . Götz

-- 
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Fax  +49 7141 969 55 420
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Re: [CentOS] Intel 10G X520-2 and iscsi storage poor performance

[Götz Reinicke - IT Koordinator]

Am 27.09.13 17:39, schrieb John Doe:
 From: Götz Reinicke - IT Koordinator goetz.reini...@filmakademie.de
 
 we have a storageserver (Centos 6.4) with a dualport Intel 10G X520-2
 Adapter.

 A QSan P600Q-D316 Storage is configured with 8*SATA Drives raid 5 for
 test, connected trought a Cisco UCS 6100 Series Fabric
 Interconnect 10G Switch.

 I formated the storage with ext4 defaults, one volume and got r/w rates
 about 10MB/s some up to 40MB/s  VERY POOR
 
 Maybe have a look at:
  http://downloadmirror.intel.com/14687/eng/readme.txt
 There are some performance tuning sections...

Thanks JD for that link; I was hoping that someone already found some
basic tunig suggestions, so that I dont have to reinvent the wheel.

cheers . Götz

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Fax  +49 7141 969 55 420
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Vorsitzender des Aufsichtsrats: Jürgen Walter MdL
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[CentOS] Intel 10G X520-2 and iscsi storage poor performance

[Götz Reinicke - IT Koordinator]

Hi,

we have a storageserver (Centos 6.4) with a dualport Intel 10G X520-2
Adapter.

A QSan P600Q-D316 Storage is configured with 8*SATA Drives raid 5 for
test, connected trought a Cisco UCS 6100 Series Fabric
Interconnect 10G Switch.

I formated the storage with ext4 defaults, one volume and got r/w rates
about 10MB/s some up to 40MB/s  VERY POOR

So we returned the storage to our dealer and they tested the hardware
and did some IO Meter Test with VMware ESXi 5.1 Server - virtual
Windows 2k8-R2 on the Qsan Storage.

The VM did some r/w IO Meter Benchmark up to 1000 MB/Sec. Better.
Hardware looks o.k.

Than they installed a Windows 2k8-R2 server and attached the QSAN. The
r/w speed is about 400-500 MB/s.

After that the dealer installed a Centos 6.4 as I did and the r/w
performance is back to our results  up to 40MB/s 

What the hell? Are the default driver and settings so bad? I know and
researched a lot of tuning options like buffers, new drivers etc.

We did not check that for now, but are'nt there some defalut values and
settings which apply as well to be much faster?

Or in other words, are some realy simple hints and suggestions to

a) debug / find the bottleneck and

b) to increase the performance to the same level as windows?


Thanks a lot for any help and feedback . Götz


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IT-Koordinator

Tel. +49 7141 969 82 420
Fax  +49 7141 969 55 420
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Eintragung Amtsgericht Stuttgart HRB 205016

Vorsitzender des Aufsichtsrats: Jürgen Walter MdL
Staatssekretär im Ministerium für Wissenschaft,
Forschung und Kunst Baden-Württemberg

Geschäftsführer: Prof. Thomas Schadt


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[CentOS] to lvm or not to lvm - why/when to use lvm

[Götz Reinicke - IT Koordinator]

Hi,

I was wondering, why/when it is useful or when should I avoid to use LVM.

I think the big advantage of LVMing is if you modify (rezising, ...)
disk and filesystem layouts a lot.

Are there any real pros or cons for following situations regarding e.g.
management and speed?

e.g.:

I do have a server system raid for which the disk layout will not
change; e.g. /var /usr /home will not change much in size.

OR

I do have some file storage shares (iscsi raids) up to some TB each on
one big storage device.

Sometimes (e.g. after a server crash) it is useful to remount the
storage to a different server.

Should I use LVM on the iscsi storage volumes?

Any suggestion and comment is welcome . Regards . Götz

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Re: [CentOS] Best Practice to remove an ISCSI LVM from a system

[Götz Reinicke - IT Koordinator]

Am 25.09.13 16:12, schrieb m.r...@5-cent.us:
 Götz Reinicke - IT Koordinator wrote:
 Hi,

 I'd like to know what would be the best way to remove an iscsi lvm
 storage from a server. (removing all reference to that storage etc.)

 The storage in question will be reset and reformated and used on a
 different server; so no LVM export is needed.

 Do I have to do lvremove ..., vgremove ..., pvremove ... and do an

 iscsiadm -m node -T ... -p ... -u and

 iscsiadm -m node -o delete -T ... -p ...

 in order to achieve that?

 Or is there some more simple way?

 This may be a stupid question, but couldn't you simply umount the storage
 from everywhere, maybe the iscsiadm commands, and then just unplug the
 thing? Why do you need to do *anything* with lvm?


AFAIK LVM etc create some traces and file information in some
places/caches .. and I like to remove all traces...

Regards . Götz

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Re: [CentOS] Best Practice to remove an ISCSI LVM from a system

[Götz Reinicke - IT Koordinator]

Am 25.09.13 17:10, schrieb Ian Pilcher:
 On 09/25/2013 08:58 AM, Götz Reinicke - IT Koordinator wrote:
 I'd like to know what would be the best way to remove an iscsi lvm
 storage from a server. (removing all reference to that storage etc.)
 
 My approach would be:
 
 * Disable all volume groups on the iSCSI LUN(s) with vgchange -a n ...
 
 * Use iscsiadm to log out of the target and delete it from the database
 
 * Run vgscan to update the LVM cache
 
 HTH
 

Helped :) thx /Götz

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Re: [CentOS] Best Practice to remove an ISCSI LVM from a system

[Götz Reinicke - IT Koordinator]

Am 25.09.13 20:01, schrieb John R Pierce:
 On 9/25/2013 6:58 AM, Götz Reinicke - IT Koordinator wrote:
 I'd like to know what would be the best way to remove an iscsi lvm
 storage from a server. (removing all reference to that storage etc.)

 The storage in question will be reset and reformated and used on a
 different server; so no LVM export is needed.

 Do I have to do lvremove ..., vgremove ..., pvremove ... and do an

 iscsiadm -m node -T ... -p ... -u and

 iscsiadm -m node -o delete -T ... -p ...

 in order to achieve that?

 Or is there some more simple way?
 
 
 umount any file systems, remove them from /etc/fstab, then vgremove the 
 volume group should be sufficient to remove history of the LV's and VG's 
 ... I don't believe its neccessary to pvremove the individual disks.
 
 then drop the target LUN on the storage server.
 


Helped :) thx /Götz

-- 
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IT-Koordinator

Tel. +49 7141 969 82 420
Fax  +49 7141 969 55 420
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[CentOS] Best Practice to remove an ISCSI LVM from a system

[Götz Reinicke - IT Koordinator]

Hi,

I'd like to know what would be the best way to remove an iscsi lvm
storage from a server. (removing all reference to that storage etc.)

The storage in question will be reset and reformated and used on a
different server; so no LVM export is needed.

Do I have to do lvremove ..., vgremove ..., pvremove ... and do an

iscsiadm -m node -T ... -p ... -u and

iscsiadm -m node -o delete -T ... -p ...

in order to achieve that?

Or is there some more simple way?


Thanks for any suggestion and best regards . Götz

-- 
Götz Reinicke
IT-Koordinator

Tel. +49 7141 969 82 420
Fax  +49 7141 969 55 420
E-Mail goetz.reini...@filmakademie.de

Filmakademie Baden-Württemberg GmbH
Akademiehof 10
71638 Ludwigsburg
www.filmakademie.de

Eintragung Amtsgericht Stuttgart HRB 205016

Vorsitzender des Aufsichtsrats: Jürgen Walter MdL
Staatssekretär im Ministerium für Wissenschaft,
Forschung und Kunst Baden-Württemberg

Geschäftsführer: Prof. Thomas Schadt


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[CentOS] Did anybody do a dovecot update on centos 5.x?

[Götz Reinicke - IT Koordinator]

Hi,

dose anybody did a dovecot update from the original 1.0.7 to e.g. 1.1 or
1.2 from atrpms repository?

We dont have any special settings; Each user one mbox mailbox. About 500
imap/pop3 accounts, 400GB data.

Any suggestions and comments are welcome.

Regards . G. Reinicke

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Re: [CentOS] Did anybody do a dovecot update on centos 5.x?

[Götz Reinicke - IT Koordinator]

Hi,
Am 26.02.13 14:40, schrieb Giles Coochey:
 On 26/02/2013 13:31, Götz Reinicke - IT Koordinator wrote:
 Hi,

 dose anybody did a dovecot update from the original 1.0.7 to e.g. 1.1 or
 1.2 from atrpms repository?

 We dont have any special settings; Each user one mbox mailbox. About 500
 imap/pop3 accounts, 400GB data.

 Any suggestions and comments are welcome.

 Regards . G. Reinicke


 I use the city-fan repo. I think I'm running dovecot 2.1.15 or so...

And did you do an upgrade from a running, working 1.0 installation?

regards . Götz


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[CentOS] looking for sssd basics and simple config with existing ldap centos 6.3

[Götz Reinicke - IT Koordinator]

Hi,

I'm planing to setup a new samba fileserver as a member to an existing
samba 3.x SMB.

The old server is still nss-pam-ldapd configured (historic left overs).

As I dont have any pressure to have the new server up and running within
the next few hours, I liked to set up sssd with our existing openldap.

After googling and reading some documentations from redhat/fedora I
think I do have a basic clue on how it should work.

But at the end I'm not getting it up and running the way I expected.

My question:

rpm -ql sssd shows a config in /etc/sssd/sssd.conf, but this file dose
not exist on my system. (May be some how a packagebug?)

Dose anybody has a working example file to share with me?

I tried to edit some examples from the web and put some config together,
but without working success.

Thanks for any suggestion, hint etc. Regards Götz

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[CentOS] what might cause iSCSI connection 1:0 error ISCSI_ERR_CONN_FAILED

[Götz Reinicke - IT Koordinator]

Hi,

I do have a centos 6.x server which accessed two different iscsistorages
for a long time without any trouble.

The storage-connection is done by a separate NIC and VLAN. The LAN
access is on an other NIC.

This weekend something broke and I don't have any clue what might be the
problem or what caused it.

The storages where mounted RO.

In /var/loge/messages there are lot of messages; so from dmesg:

Dec 10 17:13:21 richter kernel: connection3:0: ping timeout of 5 secs
expired, recv timeout 5, last rx 4324582419, last ping 4324587419, now
4324592419
Dec 10 17:13:21 richter kernel: connection3:0: detected conn error (1011)
Dec 10 17:13:22 richter iscsid: Kernel reported iSCSI connection 3:0
error (1011 - ISCSI_ERR_CONN_FAILED: iSCSI connection failed) state (3)



From dmesg:

 connection1:0: ping timeout of 5 secs expired, recv timeout 5, last rx
4324597423, last ping 4324602423, now 4324607423
 connection1:0: detected conn error (1011)

I restarted the server and the filesystems are back online RW, but there
are still that messages.

Thanks for any suggestion or hint! Regards . Götz

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Re: [CentOS] disk device lvm iscsi questions ....

[Götz Reinicke - IT Koordinator]

Am 06.11.12 17:30, schrieb James A. Peltier:
 - Original Message -
 | Hi,
 | 
 | I have an iscsistorage which I attached to a new centos 6.3 server. I
 | added logic volumes as usual, the block devices (sdb  sdc) showed up
 | in
 | dmesg; I can mount and access the stored files.
 | 
 | Now we did an firmware software update to that storage (while
 | unmounted/detached from the fileserver) and after reboot of the
 | storage
 | and reatache the iscsi nodes I do get new devices. (sdd  sde)
 | 
 | The last time I remember a simple vgchange -ay changed all neede
 | settings so that I can mount and use the volumes as expected.
 | 
 | But this time I do get an IO error like
 | 
 |   /dev/sun7110to_dali_LUN_3/lvol0: read failed after 0 of 4096 at
 | 1610608476160: Eingabe-/Ausgabefehler
 | 
 | but also:
 | 
 |   1 logical volume(s) in volume group sun7110to_dali_LUN_3 now
 |   active
 | 
 | What might be messed up? What can I try do get the
 | storage/filesystems
 | back online?
 | 
 | Thanks for any sugesstion and regards . Götz
 | 
 | 
 | --
 | Götz Reinicke - IT-Koordinator - Filmakademie Baden-Württemberg GmbH
 | 
 | 
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 | 
 
 Sounds like the update may have renamed the old devices to something new.  
 This has happened once to be with a Dell Equallogic firmware update.  Are you 
 mounting the devices using a device name or using device labels?  If the 
 former you should use labels if you created them or the UUID.  If you have a 
 look in /dev/disk you'll see all the options available to your OS.  If you 
 choice to go with UUID then have a look in /dev/disk/by-uuid to get the path
 


Hi,

on that storage I did not used labels AFAIK ... it was long ago that I
set that up. So I looked up the uuid, but dont got a working clue for me.

I than tried the steps from Hal Martins mail removing the LVM settings
etc and created a new LVM (PD/VG) with the settings I used for
installing the storage on the old server.

But I still cant mount the volumes.

May be I messed more up than to fix? :(


We dont use multipathing on that storage.


ANY suggestion and hint is very welcome!

Thanks and best regards. Götz
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[CentOS] disk device lvm iscsi questions ....

[Götz Reinicke - IT Koordinator]

Hi,

I have an iscsistorage which I attached to a new centos 6.3 server. I
added logic volumes as usual, the block devices (sdb  sdc) showed up in
dmesg; I can mount and access the stored files.

Now we did an firmware software update to that storage (while
unmounted/detached from the fileserver) and after reboot of the storage
and reatache the iscsi nodes I do get new devices. (sdd  sde)

The last time I remember a simple vgchange -ay changed all neede
settings so that I can mount and use the volumes as expected.

But this time I do get an IO error like

  /dev/sun7110to_dali_LUN_3/lvol0: read failed after 0 of 4096 at
1610608476160: Eingabe-/Ausgabefehler

but also:

  1 logical volume(s) in volume group sun7110to_dali_LUN_3 now active

What might be messed up? What can I try do get the storage/filesystems
back online?

Thanks for any sugesstion and regards . Götz


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Re: [CentOS] Migrate to Linux Server

[Götz Reinicke - IT Koordinator]

Hi,

Am 04.11.12 21:36, schrieb Ashkan Rahmani:
 Hi Ljubomir Ljubojevic
 
 On Sun, Nov 4, 2012 at 9:00 PM, Ljubomir Ljubojevic off...@plnet.rs wrote:
 
 On 11/04/2012 06:23 PM, Ashkan Rahmani wrote:
..:
 4. Run tests on one OS then reboot and run same tests on another. In
 this setup you can even run realtime tests on Linux in off-hours.

 
 you wrote 4. Run tests on one. tests. I want to know about tests.
 What tests can help me to compare?


http://www.devshed.com/c/a/BrainDump/Benchmarking-Tomcat-Performance/

and

Preface http://wiki.apache.org/tomcat/FAQ/Performance_and_Monitoring

HTH 2 /Götz

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Re: [CentOS] migrating from Centos 5.8 - 6.3 LDAP Client Config

[Götz Reinicke - IT Koordinator]

Dear Benjamin,

Am 08.10.12 11:13, schrieb Benjamin Hackl:
 Dear Goetz,
 
 On Mon, 08 Oct 2012 10:22:16 +0200
 Götz Reinicke - IT Koordinator goetz.reini...@filmakademie.de wrote:
 
 May be someone can point me to a good how to or has some
 hints/suggetions?
 
 nslcd provides this service for you. (pkg: nss-pam-ldapd)
 
 /etc/nslcd.conf
 
 And /etc/pam_ldap.conf (pkg: pam_ldap)
 
 Make sure that nslcd is running when starting samba.


Thanks. Can you tell me why not to use the SSSD? Im not yet familiar
with it, but found some postings in the web and will try to understand it.

Or is 'nlscd' just the old school way and SSSD the new one?

cheers . Götz
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[CentOS] migrating from Centos 5.8 - 6.3 LDAP Client Config

[Götz Reinicke - IT Koordinator]

Hi,

I run a Centos 5.8 samba server which uses a separate LDAP centos 6.3
server for user and group authentication.

Now we migrate to a new centos 6.3 samba server and I'd like to know how
do 'ldapify' that new server the best way.

I'm a bit confused if I can use the same nss setup like on the current
old server or how and what to configure to go with SSSD?

May be someone can point me to a good how to or has some hints/suggetions?

Thanks and best regards . Götz
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[CentOS] sendmail / logwatch relaying issue - driving me crazy

[Götz Reinicke - IT-Koordinator]

Hallo, *:-)

may be I'm to tired to see the solution, maybe someone can give me a hint?

I do have a couple of servers, sending the daily logwatch report to a
central support email account.

Some servers do have DNS A and CNAME records. On my mailserver relaying
for the servers is allowed.

Only one server drives me crazy, getting user unknown or releaying
denied messages.

Any idea, how to debug this issue? I'd be glad to fix this as a
christmas gift. I could provide logmessages of course.

Thanks and best regards

Götz
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Re: [CentOS] Any chance to get a working, current openldap srpm/rpm for centos 5.5

[Götz Reinicke - IT-Koordinator]

Am 30.11.10 19:40, schrieb Pasi Kärkkäinen:
 On Mon, Nov 29, 2010 at 03:07:49PM +0100, Götz Reinicke - IT-Koordinator 
 wrote:
 Am 29.11.10 13:43, schrieb Eero Volotinen:
 2010/11/29 Götz Reinicke - IT-Koordinator goetz.reini...@filmakademie.de:
 Hello,

 is there anyone out there, who has a current 2.4.23 srpm or good how to
 compile it from src with supported db4?

 RHEL 6 provides ldap-2.4.19

 So maybe you just need to wait for Centos 6 ?

 RH EL 6 is not supported by citrix xen server ... what is what we run
 right now.

 
 XCP (Xen Cloud Platform) 1.0 beta added support for EL6, so it should
 be also in XenServer 5.6 FP1 beta.


Thanks for the hint! :-)

looks good:

http://community.citrix.com/pages/viewpage.action?pageId=155617429

Hopefully there will be a release soon.

/Götz
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[CentOS] Any chance to get a working, current openldap srpm/rpm for centos 5.5

[Götz Reinicke - IT-Koordinator]

Hello,

is there anyone out there, who has a current 2.4.23 srpm or good how to
compile it from src with supported db4?

I tried to compile recent source files, but always finding the current
(installed) db4 4.3 fails.

Than I tried to compile the LTB Project Files:
http://ltb-project.org/wiki/documentation/openldap-rpm

May be it is just a small step or option to be set.

Would be nice to get it working :-)

Thanks and best regards

Götz
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Re: [CentOS] Any chance to get a working, current openldap srpm/rpm for centos 5.5

[Götz Reinicke - IT-Koordinator]

Am 29.11.10 13:16, schrieb Stefan Held:
 Am Montag, den 29.11.2010, 09:46 +0100 schrieb Götz Reinicke -
 IT-Koordinator:
 Hello,

 is there anyone out there, who has a current 2.4.23 srpm or good how to
 compile it from src with supported db4?
 
 Well, you would have to rebuild half of the system to do that.
 
 If you try to rebuild db4 you should rebuild rpm and so on.
 
 if you rebuild openldap all the ldap client software an dependend stuff
 should be rebuilt to ensure everything is working.
 
 What would you do with that rpm? Would it be for production?

Yes, it yould be for production. It is a pain I know, and so far I
managed to compile the rpm from

http://ltb-project.org/wiki/documentation/openldap-rpm

That might work, as it is an installation allong with the db 4.3 from RH.

chhers . Götz

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Re: [CentOS] Any chance to get a working, current openldap srpm/rpm for centos 5.5

[Götz Reinicke - IT-Koordinator]

Am 29.11.10 13:43, schrieb Eero Volotinen:
 2010/11/29 Götz Reinicke - IT-Koordinator goetz.reini...@filmakademie.de:
 Hello,

 is there anyone out there, who has a current 2.4.23 srpm or good how to
 compile it from src with supported db4?
 
 RHEL 6 provides ldap-2.4.19
 
 So maybe you just need to wait for Centos 6 ?

RH EL 6 is not supported by citrix xen server ... what is what we run
right now.

Ans using or waitig for a distribution releas if you 'only' need an
application update is not an option.

But thanks for you suggestion.

/Götz

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Eintragung Amtsgericht Stuttgart HRB 205016
Vorsitzende des Aufsichtsrats:
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Re: [CentOS] RHEL 6 Officially Released

[Götz Reinicke - IT-Koordinator]

Am 11.11.10 15:53, schrieb Robert Moskowitz:
 
 
 On 11/11/2010 01:06 AM, Götz Reinicke - IT-Koordinator wrote:
 Am 10.11.10 23:54, schrieb Robert Moskowitz:
   
 On 11/10/2010 04:33 PM, Connie Sieh wrote:
 
 On Wed, 10 Nov 2010, Robert Moskowitz wrote:


   
 On 11/10/2010 02:43 PM, Matthew Miller wrote:

 
 On Wed, Nov 10, 2010 at 02:40:52PM -0600, Matt wrote:


   
 What does 6 bring with it?  Anything new in virtualization and
 cloud computing?


  
 http://www.redhat.com/rhel/server/details/


 I don't see here what version of BIND is included.  Anyone know?

  
   bind-9.7.0-5.P2

 To determine other versions the src.rpm's are located at

 ftp://ftp.redhat.com/redhat/linux/enterprise/6/en/source/SRPMS/

 And what are the minimum system requirements?  Will we still be able to
 install this on a 256Mb system for example?
  
 http://www.redhat.com/rhel/compare/
 
 Great!  Now I know what to look for I can put the right search string
 into google to get this page!
 
 Well that has the information I was looking for except
 
 It says there that RHEL 5's minimum memory is 512Mb.  Last week I
 installed Centos 5.5 on a test system with 256Mb with a 1Gb of cache:
 
 # free
  total   used   free sharedbuffers cached
 Mem:254124 235864  18260  0   5952  97668
 -/+ buffers/cache: 132244 121880
 Swap:  1052248 151876 900372
 
 So I hope that Centos 6 will continue to be installable on a 256Mb
 system.  It does not pay to replace the memory on these test systems.  I
 can pick up 1Gb used SFF systems for about the same price as 512Mb
 memory for these old boxes.
 

I just tried to install RH EL 6 on a virtual mashine with 256 MB. Just
after the installer boots it says 'You do not have enough RAM to install
'

/Götz
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Re: [CentOS] RHEL 6 Officially Released

[Götz Reinicke - IT-Koordinator]

Am 10.11.10 23:54, schrieb Robert Moskowitz:
 On 11/10/2010 04:33 PM, Connie Sieh wrote:
 On Wed, 10 Nov 2010, Robert Moskowitz wrote:


 On 11/10/2010 02:43 PM, Matthew Miller wrote:
  
 On Wed, Nov 10, 2010 at 02:40:52PM -0600, Matt wrote:


 What does 6 bring with it?  Anything new in virtualization and cloud 
 computing?

  
 http://www.redhat.com/rhel/server/details/

 I don't see here what version of BIND is included.  Anyone know?
  
  bind-9.7.0-5.P2

 To determine other versions the src.rpm's are located at

 ftp://ftp.redhat.com/redhat/linux/enterprise/6/en/source/SRPMS/
 
 And what are the minimum system requirements?  Will we still be able to 
 install this on a 256Mb system for example?

http://www.redhat.com/rhel/compare/

/Götz

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Tel. +49 7141 969 420
Fax  +49 7141 969 55 420
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Vorsitzende des Aufsichtsrats:
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[CentOS] Update for mailman 2.1.11 - 2.1.14? Centos 5.5

[Götz Reinicke - IT-Koordinator]

Hey,

recently I was asked, how mailman handles bounces and after digging
around I also noticed that the current version is 2.1.14 with a lot of
bug fixes.

So I'd like to ask if there is a (src)rpm out there with the recent
version working on centos 5.5.

Thanks and best regadrs . Götz
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Tel. +49 7141 969 420
Fax  +49 7141 969 55 420
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Eintragung Amtsgericht Stuttgart HRB 205016
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[CentOS] system shutdown - turning off quotas takes a long time

[Götz Reinicke - IT Koordinator]

Hi,

recently I had to instal a new raid storage system for our central
fileserver. It is connected by iscsi (1Gbit) and the fielsystems mounted
are 400GB and 1TB and ext3. curretly about 400 GB are used by 1.5 Mio files.

I turned quota on and did a quota check.

BUT on reboot the system crashes/hangs during 'turning off quotas'

This message shows up about 30++ sec after the shutdown ...

Any idea? Hint? Suggestion?

The storage is an SUN 7110 with SAS drives. The Server Centos 5.5. fresh
install, recent updates.

Thanks and best regards.

Götz
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Fax  +49 7141 969 55 420
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Prof. Dr. Claudia Hübner

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Re: [CentOS] system shutdown - turning off quotas takes a long time

[Götz Reinicke - IT-Koordinator]

Am 12.08.10 09:06, schrieb Eero Volotinen:
 2010/8/12 Götz Reinicke - IT Koordinator goetz.reini...@filmakademie.de:
 Hi,

 recently I had to instal a new raid storage system for our central
 fileserver. It is connected by iscsi (1Gbit) and the fielsystems mounted
 are 400GB and 1TB and ext3. curretly about 400 GB are used by 1.5 Mio files.

 I turned quota on and did a quota check.

 BUT on reboot the system crashes/hangs during 'turning off quotas'
 
 How about turning quota off manually, does it work ok?

Hi,

I have to addmit, that I did not checked that yet, but was thinking
about doing that.

The situation is, that this is our production fielserver and our
employees would have killed me, if there was more delay ...

I try to open an other support timeslot and try this.

/Götz
-- 
Götz Reinicke
IT-Koordinator

Tel. +49 7141 969 420
Fax  +49 7141 969 55 420
E-Mail goetz.reini...@filmakademie.de

Filmakademie Baden-Württemberg GmbH
Akademiehof 10
71638 Ludwigsburg
www.filmakademie.de

Eintragung Amtsgericht Stuttgart HRB 205016
Vorsitzende des Aufsichtsrats:
Prof. Dr. Claudia Hübner

Geschäftsführer:
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[CentOS] manage (iscsi storage) LVM

[Götz Reinicke - IT-Koordinator]

Hi,

it is possible to create and setup/format volumes on a iscsi storage on
one server and than disconnect and attache the storage to an other server.

AFAIK on the 'new' server I do have to launch an LVM-scan command ...
after login to the iscsi target.

But which LVM-command and syntax was it?

Thanks for any hint! :)

/Götz
-- 
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IT-Koordinator

Tel. +49 7141 969 420
Fax  +49 7141 969 55 420
E-Mail goetz.reini...@filmakademie.de

Filmakademie Baden-Württemberg GmbH
Akademiehof 10
71638 Ludwigsburg
www.filmakademie.de

Eintragung Amtsgericht Stuttgart HRB 205016
Vorsitzende des Aufsichtsrats:
Prof. Dr. Claudia Hübner

Geschäftsführer:
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Re: [CentOS] manage (iscsi storage) LVM - SOLVED

[Götz Reinicke - IT-Koordinator]

Am 11.08.10 14:57, schrieb Eero Volotinen:
 2010/8/11 Götz Reinicke - IT-Koordinator goetz.reini...@filmakademie.de:
 Hi,

 it is possible to create and setup/format volumes on a iscsi storage on
 one server and than disconnect and attache the storage to an other server.

 AFAIK on the 'new' server I do have to launch an LVM-scan command ...
 after login to the iscsi target.

 But which LVM-command and syntax was it?
 
 how about reading the manual:
 http://www.redhat.com/docs/manuals/enterprise/RHEL-4-Manual/sysadmin-guide/s1-disk-storage-lvm.html
 
 maybe you are talking about lvscan or pvscan ..
 
 man command gives the syntax


Found an old helping posting:

vgchange -ay



/Götz

-- 
Götz Reinicke
IT-Koordinator

Tel. +49 7141 969 420
Fax  +49 7141 969 55 420
E-Mail goetz.reini...@filmakademie.de

Filmakademie Baden-Württemberg GmbH
Akademiehof 10
71638 Ludwigsburg
www.filmakademie.de

Eintragung Amtsgericht Stuttgart HRB 205016
Vorsitzende des Aufsichtsrats:
Prof. Dr. Claudia Hübner

Geschäftsführer:
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[CentOS] DHCP failover ... Some questions.

[Götz Reinicke - IT-Koordinator]

Hi,

I plan to reorganise our IP management and I'd like to implement a slave
DHCP server. Right now we assign IP addresses based on the
ethernetadress of a client 1:1.

The tutorial here [1] is simple and looks like the thing I need.

I do have a lot of subnetworks and my cisco router has an DHCP helper
address set. I know I'll have to add the second dhcp-server address.

My questions now is:

Dose the dhcp-slave syncs the dhcp data from the master?

Or do I have to copy the data to the master AND slave?

Any other sugesstions or comments?


Thanks and best regards,

Götz


[1] http://www.howtoforge.com/how-to-set-up-dhcp-failover-on-centos5.1
-- 
Götz Reinicke
IT-Koordinator

Tel. +49 7141 969 420
Fax  +49 7141 969 55 420
E-Mail goetz.reini...@filmakademie.de

Filmakademie Baden-Württemberg GmbH
Akademiehof 10
71638 Ludwigsburg
www.filmakademie.de

Eintragung Amtsgericht Stuttgart HRB 205016
Vorsitzende des Aufsichtsrats:
Prof. Dr. Claudia Hübner

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Re: [CentOS] DHCP failover ... Some questions.

[Götz Reinicke - IT-Koordinator]

Am 29.07.10 14:31, schrieb Lars Hecking:
 G?tz Reinicke - IT-Koordinator writes:
 Hi,

 I plan to reorganise our IP management and I'd like to implement a slave
 DHCP server. Right now we assign IP addresses based on the
 ethernetadress of a client 1:1.

 The tutorial here [1] is simple and looks like the thing I need.

 I do have a lot of subnetworks and my cisco router has an DHCP helper
 address set. I know I'll have to add the second dhcp-server address.

 My questions now is:

 Dose the dhcp-slave syncs the dhcp data from the master?

 Or do I have to copy the data to the master AND slave?

 Any other sugesstions or comments?
  
  The servers will balance the pool(s) between them. It's actually fun (for
  personal preference values of fun) to tail the logs on both servers
  after starting the slave and watch dhcpd communicate.


So they only balance the pool and no 1:1 assignment from
IP:Host-MAC-address.

hm ...

Thanks for your answere.

Cheers - Götz

-- 
Götz Reinicke
IT-Koordinator

Tel. +49 7141 969 420
Fax  +49 7141 969 55 420
E-Mail goetz.reini...@filmakademie.de

Filmakademie Baden-Württemberg GmbH
Akademiehof 10
71638 Ludwigsburg
www.filmakademie.de

Eintragung Amtsgericht Stuttgart HRB 205016
Vorsitzende des Aufsichtsrats:
Prof. Dr. Claudia Hübner

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Re: [CentOS] DHCP failover ... Some questions.

[Götz Reinicke - IT-Koordinator]

Am 29.07.10 14:29, schrieb Phil Manuel:
 On 29/07/10 9:55 PM, Götz Reinicke - IT-Koordinator wrote:
 Hi,

 I plan to reorganise our IP management and I'd like to implement a slave
 DHCP server. Right now we assign IP addresses based on the
 ethernetadress of a client 1:1.

 The tutorial here [1] is simple and looks like the thing I need.

 I do have a lot of subnetworks and my cisco router has an DHCP helper
 address set. I know I'll have to add the second dhcp-server address.

 My questions now is:

 Dose the dhcp-slave syncs the dhcp data from the master?

 Or do I have to copy the data to the master AND slave?

 Any other sugesstions or comments?


 Thanks and best regards,

  Götz


 Hi,
 I thought the latest dhcp server had built-in support for master-slave 
 scenarios, it just replicates current status to the slave, and when it 
 fails the slave takes over.

Do you have any more information on that or do you just think it is like
that? I can't find any docs on that, so any hint is welcome!

cheers . Götz
-- 
Götz Reinicke
IT-Koordinator

Tel. +49 7141 969 420
Fax  +49 7141 969 55 420
E-Mail goetz.reini...@filmakademie.de

Filmakademie Baden-Württemberg GmbH
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www.filmakademie.de

Eintragung Amtsgericht Stuttgart HRB 205016
Vorsitzende des Aufsichtsrats:
Prof. Dr. Claudia Hübner

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Re: [CentOS] DHCP failover ... Some questions.

[Götz Reinicke - IT-Koordinator]

Am 29.07.10 15:03, schrieb Lars Hecking:
  
  The servers will balance the pool(s) between them. It's actually fun (for
  personal preference values of fun) to tail the logs on both servers
  after starting the slave and watch dhcpd communicate.


 So they only balance the pool and no 1:1 assignment from
 IP:Host-MAC-address.
  
  Sorry, I had to re-read your original posting ...


No problem :)

  The best way to set this up is to have a minimal dhcp.conf on both servers
  that contains global definitions and the failover section, and then includes
  another config file that contains everything else - the shared-network block
  with pools, groups etc. This second config file is the same for both servers
  and you need to keep it in sync.

Thanks for that, it sounds a good way.

cheers . Götz

-- 
Götz Reinicke
IT-Koordinator

Tel. +49 7141 969 420
Fax  +49 7141 969 55 420
E-Mail goetz.reini...@filmakademie.de

Filmakademie Baden-Württemberg GmbH
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71638 Ludwigsburg
www.filmakademie.de

Eintragung Amtsgericht Stuttgart HRB 205016
Vorsitzende des Aufsichtsrats:
Prof. Dr. Claudia Hübner

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Re: [CentOS] blog tool use the LDAP auth

[Götz Reinicke - IT-Koordinator]

Am 21.06.10 04:58, schrieb sync:
 Hi, all:
 
 Are there  any blog tools which can use the openldap to
 authenticate  the account or password?
 
 Could someone give some suggestions for it ? Thanks in advance...

Wordpress should:

http://wordpress.org/extend/plugins/simple-ldap-login/

Regards - Götz

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IT-Koordinator

Tel. +49 7141 969 420
Fax  +49 7141 969 55 420
E-Mail goetz.reini...@filmakademie.de

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Re: [CentOS] cameras and CentOS

[Götz Reinicke - IT-Koordinator]

Hi,

Am 17.06.10 08:22, schrieb Jobst Schmalenbach:
 Hi
 
 I want to put up a few cameras connected to a CentOS box.
 I currently have a box with one camera and that works (USB),
 I can take a pic (the script does that) and see that on a webpage.
 
 However, I want to have a couple of cameras a little further 
 away (more than 5 meters).
 
 USB has a limit, I have tried that camera with a longer cable
 and it does not work ... so I need to route that in a different
 way. Are there equaly as cheap other moethods? Or can I use
 USB-adapter-network cable-adapter-USB?
 
 How can I get that to work?

may be with that usb extender:

XTENDEX® USB-C5-LC - http://www.networktechinc.com/usbc5.html


Cheers - Götz

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IT-Koordinator

Tel. +49 7141 969 420
Fax  +49 7141 969 55 420
E-Mail goetz.reini...@filmakademie.de

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Eintragung Amtsgericht Stuttgart HRB 205016
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[CentOS] how to set up pam_oddjob_mkhomedir (samba and ldap)?

[Götz Reinicke - IT-Koordinator]

Hi,

I do have a samba server up and running and users are authenticated by ldap.

Login to the samba server works as long as the user has a home directory.

Now if I create a new ldap entry for an user I'd like to use
pam_oddjob_mkhomedir to create a home directory if it dose not exist on
login.

But something fails on my system.

I followed the redhat faq http://kbase.redhat.com/faq/docs/DOC-3973
which may be wron according to that bugzilla entry.

https://bugzilla.redhat.com/show_bug.cgi?id=429524

So I added

sessionoptional pam_oddjob_mkhomedir.so skel=/etc/skel/ umask=0022

to

/etc/pam.d/login

using all other default settings and configs using the rpms provided by
redhat EL 5.5 / Centos 5.5


rpm -qa|grep oddjob
oddjob-0.27-9.el5
oddjob-libs-0.27-9.el5

the services are restarted, there are no errors in the log except from
samba, that the login from the user fails because of the missing home
directory.

I'd appreciate any suggestion and best regards

Götz

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Eintragung Amtsgericht Stuttgart HRB 205016
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Prof. Dr. Claudia Hübner

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[CentOS] Samba and ldap failover - RH / Centos problem?

[Götz Reinicke - IT-Koordinator]

Hi folks,

I recently got my ldap master slave samba test environment up and runing.

samba-3.0.33-3.15.el5_4.1
openldap-2.3.43-3.el5

The ldap systems sync fine, samba users are authenticated by each server
seperatly if I set tham in the samba conf.

E.g. passdb backend = ldapsam:ldap://ldap2.filmakademie.de; and
passdb backend = ldapsam:ldap://ldap1.filmakademie.de;

work.

passdb backend = ldapsam:ldap://ldap1.filmakademie.de
ldap://ldap2.filmakademie.de; works as long, as ldap1 is up. If ldap1 is
down, no authentication / switchover to ldap2 is done.

I've googled, looked up the samba wiki and finaly I found a posting
Fedora 4 related to probems with an ldap_initialize() function ...

So my question, are ther any known problems or what may I check/debug?

Thanks and best regards,

Götz
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IT-Koordinator

Tel. +49 7141 969 420
Fax  +49 7141 969 55 420
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[CentOS] openldap-2.3.43 and db4-utils - DB_VERSION_MISMATCH

[Götz Reinicke - IT-Koordinator]

Hi,

I just started to set up a test ldap server and followed some tutorials.
One topic is the tuning/monitoring of the bdb.

So I installed the db4-utils and executed a db_stat -h /var/lib/ldap/ -m.

The answere is no stat, but:

db_stat: Program version 4.3 doesn't match environment version
db_stat: DB_ENV-open: DB_VERSION_MISMATCH: Database environment version
mismatch

The systemsetup is a basic, fresh centos 5.4 isntallation. So why do I
get this message?

db4-4.3.29-10.el5
db4-utils-4.3.29-10.el5
openldap-servers-2.3.43-3.el5


Thanks and best regrads,

Götz
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Tel. +49 7141 969 420
Fax  +49 7141 969 55 420
E-Mail goetz.reini...@filmakademie.de

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Eintragung Amtsgericht Stuttgart HRB 205016
Vorsitzende des Aufsichtsrats:
Prof. Dr. Claudia Hübner
Staatsrätin für Demographischen Wandel und für Senioren im Staatsministerium

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Re: [CentOS] openldap-2.3.43 and db4-utils - DB_VERSION_MISMATCH _ SOLVED

[Götz Reinicke - IT-Koordinator]

Hi,

openldap-2.3.43 in centos 5.4 comes with db 4.4 build in ...

ldd /usr/sbin/slapd |grep db

libslapd_db-4.4.so = /usr/lib64/tls/libslapd_db-4.4.so
(0x2ab12959)


and also ships his own db-utilities ...

/usr/sbin/slapd_db_archive
/usr/sbin/slapd_db_checkpoint
/usr/sbin/slapd_db_deadlock
/usr/sbin/slapd_db_dump
/usr/sbin/slapd_db_hotbackup
/usr/sbin/slapd_db_load
/usr/sbin/slapd_db_printlog
/usr/sbin/slapd_db_recover
/usr/sbin/slapd_db_stat
/usr/sbin/slapd_db_upgrade
/usr/sbin/slapd_db_verify

great ... :-|

Regards,

Götz


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[CentOS] sendmail alias

[Götz Reinicke - IT-Koordinator]

Hi,

how are mails forwarded, if I do have the same alias pointing to two
different users like this (two entries, two lines):

bon.aqua: coke
bon.aqua: pepsi

Will coke and pepsi get the mail adressed to bon.aqua or will only the
first entry get the mail?

I know, that bon.aqua: coke, pepsi will forward the mails to coke and
pepsi,


Cheers,

Götz
-- 
Götz Reinicke
IT-Koordinator

Tel. +49 7141 969 420
Fax  +49 7141 969 55 420
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Vorsitzende des Aufsichtsrats:
Prof. Dr. Claudia Hübner
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Re: [CentOS] sendmail alias

[Götz Reinicke - IT-Koordinator]

Kai Schaetzl schrieb:
 =?ISO-8859-15?Q?G=F6tz_Reinicke_-_IT-Koordinator?= wrote on Mon, 18 Jan 
 2010 14:39:37 +0100:
 
 how are mails forwarded, if I do have the same alias pointing to two
 different users like this (two entries, two lines):

 bon.aqua: coke
 bon.aqua: pepsi

 Will coke and pepsi get the mail adressed to bon.aqua or will only the
 first entry get the mail?
 
 Only one will get used, don't remember if the first or the last. I think 
 it is the first.
 
 I know, that bon.aqua: coke, pepsi will forward the mails to coke and
 pepsi,
 
 So, why ask? ;-)

Because some coworkers messed up my alias file ... :-) And I was
wondering if this setup will work.

Cheers,

Götz
-- 
Götz Reinicke
IT-Koordinator

Tel. +49 7141 969 420
Fax  +49 7141 969 55 420
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Vorsitzende des Aufsichtsrats:
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[CentOS] apache httpd, webdav, ssl - something is wrong, but what?

[Götz Reinicke - IT-Koordinator]

Hi,

happy new year!

Today I set up a new web(dav) server for our .ical-System (phpIcalendar)
and copied the config and data files from the old server.

But somthing is wrong with the configuration and I'm blind to find the
error.

On the old server, I can still publish my calender from e.g. Apple iCal
at the server URL with http

http://oldserver.filmakademie.de/DAVdocs

On the new server, I can publish only with https - so only ssl secured.

https://newserver.filmakademie.de/DAVdocs

The webpage for the calendars can be accessed unsecured with http.

http://oldserver.filmakademie.de/

http://newserver.filmakademie.de/

Thanks for any hint or support or suggestion to find the error.

-- 
Götz Reinicke
IT-Koordinator

Tel. +49 7141 969 420
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Re: [CentOS] looking for kernel-xen- 2.6.18-164.el5

[Götz Reinicke - IT-Koordinator]

Rudi Ahlers schrieb:
 Hi all,
 
 does anyone know where I can download  kernel-xen- 2.6.18-164.el5 for
 CentOS 5? I can't install it with yum, since yum has a much newer
 version already. I have searched google, but can't find a download
 link, only a lot of references to the kernel w.r.t problems.
 

ftp://zid-lux1.uibk.ac.at/pub/dist/centos/5/os/i386/CentOS/kernel-xen-2.6.18-164.el5.i686.rpm

and

ftp://zid-lux1.uibk.ac.at/pub/dist/centos/5/os/x86_64/CentOS/kernel-xen-2.6.18-164.el5.x86_64.rpm


Works for me. Regards.

/Götz

-- 
Götz Reinicke
IT-Koordinator

Tel. +49 7141 969 420
Fax  +49 7141 969 55 420
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Prof. Dr. Claudia Hübner
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[CentOS] iptables ... *BSD pf ... pfSense

[Götz Reinicke - IT Koordinator]

Hi,

I followed the Optimizing CentOS for gigabit firewall posting and as 
some posters wrote pf is soo sooo sso mutch faster, I was thinking 
to give it a try. But I'm not familier to BSD so I was looking for some 
tools and found pfsense

http://www.pfsense.org/

pfSense is a free, open source customized distribution of FreeBSD 
tailored for use as a firewall and router

Has any of the firewall guys on the list ever tested this distri?

What do you think?

Right now we run a iptables Shorewall system and had no problems so far, 
but having a managed firewall distri which rocks whould be an alternative.

Cheers,

Götz


-- 
Götz Reinicke
IT-Koordinator

Tel. +49 7141 969 420
Fax  +49 7141 969 55 420
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Filmakademie Baden-Württemberg GmbH
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www.filmakademie.de

Eintragung Amtsgericht Stuttgart HRB 205016
Vorsitzende des Aufsichtsrats:
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[CentOS] i386 and x86_64 packages on an 64bit system after fresh install - why?

[Götz Reinicke - IT-Koordinator]

Hi,

I recetly set up a brand new fres Centos 5.4 64 bit system and found a
lot of i386 packages installed along with the x86_64 packages.

My questions: Why is this done?

May I remove the i386 packages? (rpm -e )

I wanted to update today the installed packages and do get some dep
messages:

-- Finished Dependency Resolution
glibc-2.5-42.i686 from installed has depsolving problems
  -- Missing Dependency: glibc-common = 2.5-42 is needed by package
glibc-2.5-42.i686 (installed)
Error: Missing Dependency: glibc-common = 2.5-42 is needed by package
glibc-2.5-42.i686 (installed)
 You could try using --skip-broken to work around the problem
 You could try running: package-cleanup --problems
package-cleanup --dupes
rpm -Va --nofiles --nodigest
The program package-cleanup is found in the yum-utils package.


Thanks for any suggestion and best regards,

Götz
-- 
Götz Reinicke
IT-Koordinator

Tel. +49 7141 969 420
Fax  +49 7141 969 55 420
E-Mail goetz.reini...@filmakademie.de

Filmakademie Baden-Württemberg GmbH
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71638 Ludwigsburg
www.filmakademie.de

Eintragung Amtsgericht Stuttgart HRB 205016
Vorsitzende des Aufsichtsrats:
Prof. Dr. Claudia Hübner
Staatsrätin für Demographischen Wandel und für Senioren im Staatsministerium

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Re: [CentOS] i386 and x86_64 packages on an 64bit system after fresh install - why?

[Götz Reinicke - IT-Koordinator]

Akemi Yagi schrieb:
 On Fri, Dec 18, 2009 at 1:12 AM, Götz Reinicke - IT-Koordinator
 goetz.reini...@filmakademie.de wrote:
 Hi,

 I recetly set up a brand new fres Centos 5.4 64 bit system and found a
 lot of i386 packages installed along with the x86_64 packages.

 My questions: Why is this done?

 May I remove the i386 packages? (rpm -e )
 
 The answer is in the FAQ  :)
 
 http://wiki.centos.org/FAQ/General#head-357346ff0bf7c14b0849c3bcce39677aaca528e9

:-) Thanks *kotau*

/Götz
-- 
Götz Reinicke
IT-Koordinator

Tel. +49 7141 969 420
Fax  +49 7141 969 55 420
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Filmakademie Baden-Württemberg GmbH
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Eintragung Amtsgericht Stuttgart HRB 205016
Vorsitzende des Aufsichtsrats:
Prof. Dr. Claudia Hübner
Staatsrätin für Demographischen Wandel und für Senioren im Staatsministerium

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[CentOS] no valid partitiontables anymore

[Götz Reinicke - IT-Koordinator]

Hi,

recently I had to shut down an iscsi-raid an the connected servers.

After the reinstallation and changing the ip config to match our new lan
design, I can login to the iscsi device, the volumes are there and I can
establish an iscsi link to some volumes.

But, some other volumes on the iscsi device are reported with an invalid
partition table or that they can't be mounted.


e.g.:

fdisk -l /dev/sdf

Disk /dev/sdf: 53.6 GByte, 53687091200 Byte
64 heads, 32 sectors/track, 51200 cylinders
Einheiten = Zylinder von 2048 × 512 = 1048576 Bytes

   Gerät  boot. AnfangEnde Blöcke   Id  System
/dev/sdf1   1   5120052428784   83  Linux


fdisk -l /dev/sdf1

Disk /dev/sdf1: 53.6 GByte, 53687074816 Byte
64 heads, 32 sectors/track, 51199 cylinders
Einheiten = Zylinder von 2048 × 512 = 1048576 Bytes

Disk /dev/sdf1 doesn't contain a valid partition table


mount -t ext3 /dev/sdf1 /export/iscsi01-UDV1/

(lot of german information, e.g. wrong fs-type, damaged superblock ...)

mount: Falscher Dateisystemtyp, ungültige Optionen, der
   Superblock von /dev/sdf1 ist beschädigt, fehlende
   Kodierungsseite oder ein anderer Fehler
   Manchmal liefert das Syslog wertvolle Informationen – versuchen
   Sie  dmesg | tail  oder so


dmesg

... VFS: Can't find ext3 filesystem on dev sdf1.


But I'm sure, about using ext3. The error message is the same with
maount -t ext2 (for testing)

Any hint would make my happy


Thanks a lot an best regards,

Götz
-- 
Götz Reinicke
IT-Koordinator

Tel. +49 7141 969 420
Fax  +49 7141 969 55 420
E-Mail goetz.reini...@filmakademie.de

Filmakademie Baden-Württemberg GmbH
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71638 Ludwigsburg
www.filmakademie.de

Eintragung Amtsgericht Stuttgart HRB 205016
Vorsitzende des Aufsichtsrats:
Prof. Dr. Claudia Hübner
Staatsrätin für Demographischen Wandel und für Senioren im Staatsministerium

Geschäftsführer:
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[CentOS] lvm and device nodes

[Götz Reinicke - IT-Koordinator]

Hi,

my iscsi volumes are all lvm created :-) But the server(s) dont have the
device nodes any more.

So how may I create tham again? Or ist there an lvm-tool (option) to do
this for me?

e.g. for:

--- Logical volume ---
  LV Name/dev/VGJBOD01/lvol0
  VG NameVGJBOD01
  LV UUIDIK35sK-bL9B-MeMv-2co6-XtOd-RCxK-lUpank
  LV Write Accessread/write
  LV Status  NOT available
  LV Size4,77 TB
  Current LE 1251375
  Segments   1
  Allocation inherit
  Read ahead sectors auto



Any hint would make my happy!


Thanks a lot an best regards,

Götz
-- 
Götz Reinicke
IT-Koordinator

Tel. +49 7141 969 420
Fax  +49 7141 969 55 420
E-Mail goetz.reini...@filmakademie.de

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71638 Ludwigsburg
www.filmakademie.de

Eintragung Amtsgericht Stuttgart HRB 205016
Vorsitzende des Aufsichtsrats:
Prof. Dr. Claudia Hübner
Staatsrätin für Demographischen Wandel und für Senioren im Staatsministerium

Geschäftsführer:
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Re: [CentOS] lvm and device nodes

[Götz Reinicke - IT-Koordinator]

Karanbir Singh schrieb:
 On 11/12/2009 12:47 PM, Götz Reinicke - IT-Koordinator wrote:
 my iscsi volumes are all lvm created :-) But the server(s) dont have the
 device nodes any more.
 
 once the blockdev is visible to the os:
 
 vgchange -ay
 


Thanks a lot and a thousand kotaus to you. You saved my day!

I'm back online ...

Cheers,

Götz

-- 
Götz Reinicke
IT-Koordinator

Tel. +49 7141 969 420
Fax  +49 7141 969 55 420
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Vorsitzende des Aufsichtsrats:
Prof. Dr. Claudia Hübner
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Re: [CentOS] no valid partitiontables anymore - solved

[Götz Reinicke - IT-Koordinator]

nate schrieb:
 Götz Reinicke - IT-Koordinator wrote:
 
 fdisk -l /dev/sdf1
 
 This is invalid, you don't run fdisk against a partition only
 against a device, in this case /dev/sdf
 
 
 (lot of german information, e.g. wrong fs-type, damaged superblock ...)
 
 Are you sure that device is an ext3 file system? Try e2fsck on
 it?

Hi,

thanks, the problem was that de volumes where managed by lvm ... see my
other posting :-)


Regards,

Götz
-- 
Götz Reinicke
IT-Koordinator

Tel. +49 7141 969 420
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Eintragung Amtsgericht Stuttgart HRB 205016
Vorsitzende des Aufsichtsrats:
Prof. Dr. Claudia Hübner
Staatsrätin für Demographischen Wandel und für Senioren im Staatsministerium

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Re: [CentOS] New administrator and upgrading systems

[Götz Reinicke - IT-Koordinator]

Christoph Maser schrieb:
 Am Mittwoch, den 21.10.2009, 23:55 +0200 schrieb Yves Bellefeuille:
 it will work when your mirror has 5.4
 I have the same problem. Are many mirrors not updated yet?
 
 Was there an official CentOS 5.4 announcemnet already?

http://lists.centos.org/pipermail/centos-announce/2009-October/016195.html

/götz
-- 
Götz Reinicke
IT-Koordinator

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Eintragung Amtsgericht Stuttgart HRB 205016
Vorsitzende des Aufsichtsrats:
Prof. Dr. Claudia Hübner
Staatsrätin für Demographischen Wandel und für Senioren im Staatsministerium

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