Re: [CentOS] Jumbo frames problem with Realtek NICs?

On Jun 25, 2011, at 3:05 PM, Emmanuel Noobadmin wrote: > Ironically, even at 1500MTU, I was able to hit the full 100+ MB/s > speed available on a single Gigabit link so it seems my experiment was > a bit futile. Jumbo frames don't give higher throughput, but lower CPU. I find standard frames gi

Re: [CentOS] ext4 in CentOS 5.6?

On Jun 23, 2011, at 9:44 PM, Marian Marinov wrote: > On Friday 24 June 2011 04:34:20 Smithies, Russell wrote: >> We have a single 27TB partition (35 x 1TB drives as RAID5+0 in an HP >> MDS600), just formatted it xfs and had no problems with it so far. It's >> used as scratch space so not too conc

Re: [CentOS] CentOS 5 32bit and 3Tbyte drives

On Jun 20, 2011, at 4:46 PM, Stephen Harris wrote: > On Mon, Jun 20, 2011 at 09:32:03PM +0200, Markus Falb wrote: >> On 20.6.2011 21:19, Stephen Harris wrote: > >>> LVM; pvcreate, vgcreate, lvcreate. What's a partition? :-) >> >> But your filesystem has still to be aligned correctly. Is lvm 4k

Re: [CentOS] Slightly OT: First Time KVM and LVM on Centos

On Jun 20, 2011, at 9:56 AM, Kwan Lowe wrote: > On Thu, Jun 16, 2011 at 8:59 AM, Les Mikesell wrote: >> >>> There is no reason that should be true. Copying 20GB out of an LV >>> should take exactly the same amount of time as copying 20GB out of a file. >> >> What about the destination? Would

Re: [CentOS] Cloning LVM

On Jun 8, 2011, at 8:59 AM, Christopher Hearn wrote: > I have a workstation with two separate drives set up with LVM. I'm buying an > LSI RAID controller to set up mirrored drives. I'd like to clone the > existing drives over to the new mirrored drives somehow, but not sure the > best way t

Re: [CentOS] OT: Why VM?

On May 27, 2011, at 5:29 PM, Devin Reade wrote: > But taking the other side of the argument, here are two scenarios where > I *wouldn't* use virtualization (one could certainly enumerate more): > > 1. A production DB server or server cluster. I actually have really good experience with MSSQL an

Re: [CentOS] SSD for Centos SWAP /tmp & /var/ partition

On May 24, 2011, at 11:40 AM, Bowie Bailey wrote: > On 5/24/2011 11:25 AM, Rudi Ahlers wrote: >> On Tue, May 24, 2011 at 4:22 PM, Bowie Bailey wrote: >>> >>> Personally, I would call it an SATA HDD vs an SATA SSD. The same would >>> be true of a SCSI HDD vs a SCSI SSD. >>> >>> At the moment,

Re: [CentOS] how to access lvm inside lvm

On Apr 29, 2011, at 6:05 PM, Peter Peltonen wrote: > I have a centos 5.6 server that has xen domUs installed on their on > logical volumes. These logical volumes contain their own volume groups > and again their own logical volumes. I want to access the domU logical > volumes and tried this: > >

Re: [CentOS] iscsi multipath fails

On Apr 21, 2011, at 4:28 PM, Adam Wead wrote: > Hi all, > > I have a Dell server running cent 5.6, new install, connecting to an IBM > DS3500. I have configured iscsi connections using iscsid and can log into > the targets on the IBM. I can also mount the LUNs when accessing them from > the

Re: [CentOS] 40TB File System Recommendations

On Apr 17, 2011, at 3:05 AM, Charles Polisher wrote: > On Wed, Apr 13, 2011 at 11:55:08PM -0400, Ross Walker wrote: >> On Apr 13, 2011, at 9:40 PM, Brandon Ooi wrote: >> >>> On Wed, Apr 13, 2011 at 6:04 PM, Ross Walker wrote: >>>> >>>> O

Re: [CentOS] 40TB File System Recommendations

On Apr 15, 2011, at 12:32 PM, Rudi Ahlers wrote: > > > On Fri, Apr 15, 2011 at 6:26 PM, Ross Walker wrote: > On Apr 15, 2011, at 9:17 AM, Rudi Ahlers wrote: > >> >> >> On Fri, Apr 15, 2011 at 3:05 PM, Christopher Chan >> wrote: >> On Friday,

Re: [CentOS] 40TB File System Recommendations

On Apr 15, 2011, at 9:17 AM, Rudi Ahlers wrote: > > > On Fri, Apr 15, 2011 at 3:05 PM, Christopher Chan > wrote: > On Friday, April 15, 2011 07:24 PM, Benjamin Franz wrote: > > On 04/14/2011 09:00 PM, Christopher Chan wrote: > >> > >> Wanna try that again with 64MB of cache only and tell us w

Re: [CentOS] Expanding RAID 10 array, WAS: 40TB File System Recommendations

On Apr 15, 2011, at 4:48 AM, Rudi Ahlers wrote: > > > On Fri, Apr 15, 2011 at 10:40 AM, Ljubomir Ljubojevic wrote: > John R Pierce wrote: > > On 04/14/11 5:43 PM, Christopher Chan wrote: > >> On Friday, April 15, 2011 02:46 AM, John R Pierce wrote: > >>> On 04/14/11 7:44 AM, Christopher Chan w

Re: [CentOS] 40TB File System Recommendations

2011/4/14 Peter Kjellström : > On Thursday, April 14, 2011 04:13:19 PM Steve Brooks wrote: >> On Thu, 14 Apr 2011, Peter Kjellström wrote: >> > On Tuesday, April 12, 2011 03:10:33 PM Lars Hecking wrote: >> >>> OTOH, gparted doesn't see my software raid array either. Gparted it >> >>> rather practic

Re: [CentOS] 40TB File System Recommendations

2011/4/14 Peter Kjellström : > On Tuesday, April 12, 2011 02:56:54 PM rai...@ultra-secure.de wrote: > ... >> > Steve, >> > I'm managing machines with 30TB of storage for more then two years. And >> > with >> > good reporting and reaction we have never had to run fsck. >> >> That's not the issue. >>

Re: [CentOS] 40TB File System Recommendations

On Apr 14, 2011, at 6:54 AM, John Jasen wrote: > On 04/13/2011 09:04 PM, Ross Walker wrote: >> On Apr 13, 2011, at 7:26 PM, John Jasen wrote: > > > > >> Every now and then I hear these XFS horror stories. They seem too impossible >> to believe. >&g

Re: [CentOS] 40TB File System Recommendations

On Apr 13, 2011, at 9:40 PM, Brandon Ooi wrote: > On Wed, Apr 13, 2011 at 6:04 PM, Ross Walker wrote: > > > > One was a hardware raid over fibre channel, which silently corrupted > > itself. System checked out fine, raid array checked out fine, xfs was > > replaced wi

Re: [CentOS] 40TB File System Recommendations

On Apr 13, 2011, at 7:26 PM, John Jasen wrote: > On 04/12/2011 08:19 PM, Christopher Chan wrote: >> On Tuesday, April 12, 2011 10:36 PM, John Jasen wrote: >>> On 04/12/2011 10:21 AM, Boris Epstein wrote: On Tue, Apr 12, 2011 at 3:36 AM, Alain Péan >>>

Re: [CentOS] Expanding RAID 10 array, WAS: 40TB File System Recommendations

On Wed, Apr 13, 2011 at 11:19 AM, Emmanuel Noobadmin wrote: > On 4/13/11, Rudi Ahlers wrote: >>> to expand the array :) >> >> I haven't had problems doing it this way yet. > > I finally figured out my mistake creating the raid devices and got a > working RAID 0 on two RAID 1 arrays. But I wasn't

Re: [CentOS] 40TB File System Recommendations

On Apr 13, 2011, at 8:45 AM, Christopher Chan wrote: > On Wednesday, April 13, 2011 04:00 PM, Sorin Srbu wrote: > >> With today's CPU-performance and RAM available, software raids are not a >> problem >> to power. >> > > That depends. Software raid is fine for raid1 and raid0. If you want >

Re: [CentOS] Dag's RHEL Rebuild Project.

On Apr 12, 2011, at 11:00 PM, Christopher Chan wrote: > On Wednesday, April 13, 2011 10:34 AM, Ross Walker wrote: >> On Apr 12, 2011, at 3:55 PM, Dag Wieers wrote: >> >>> On Tue, 12 Apr 2011, Keith Keller wrote: >>> >>>> On Tue, Apr 1

Re: [CentOS] 40TB File System Recommendations

On Apr 12, 2011, at 8:53 AM, Rudi Ahlers wrote: > On Tue, Apr 12, 2011 at 2:47 PM, Marian Marinov wrote: >> >> Steve, >> I'm managing machines with 30TB of storage for more then two years. And with >> good reporting and reaction we have never had to run fsck. >> >> However I'm sure that if you

Re: [CentOS] Dag's RHEL Rebuild Project.

On Apr 12, 2011, at 3:55 PM, Dag Wieers wrote: > On Tue, 12 Apr 2011, Keith Keller wrote: > >> On Tue, Apr 12, 2011 at 07:59:56PM +0100, Ian Murray wrote: >> >>> Erm, the dev(s) *suggested* using an alternative distribution. >> >> The developers never suggested using this list to raise funds f

Re: [CentOS] ZFS @ centOS

On Apr 5, 2011, at 4:19 PM, rai...@ultra-secure.de wrote: > > >> But ... >> I've been reading about some of the issues with ZFS performance and have >> discovered that it needs a *lot* of RAM to support decent caching ... >> the recommendation is for a GByte of RAM per TByte of storage just for

Re: [CentOS] File-system Corruption

On Apr 6, 2011, at 6:06 AM, James Bensley wrote: > Hi List, > > I suppose this isn't strictly CentOS but I'm talking about some 5.5 > servers so I thought someone else here may have had the same issues; > > We power on servers at night via IPMI and shut them down the same way > for automation.

Re: [CentOS] ZFS @ centOS

On Apr 2, 2011, at 5:28 PM, Dawid Horacy Golebiewski wrote: > I pondered Solaris for some time, but as I do not intend to build the OS > "from scratch" and nexenta was to GUIed for me I started researching SME. > What puzzled me is the theory and the practice: RAIDz is the best > solution from

Re: [CentOS] EXT4 Filesystem Mount Failed (bad geometry: block count)

On Mar 23, 2011, at 6:05 AM, Balaji wrote: > Dear All, > > Currently using RHEL6 Linux and Kernel Version is 2.6.32-71.el6.i686 and DRBD > Version is 8.3.10 > > DRBD is build from source and Configured DRBD with 2 Node testing with > Simplex Setup > Server 1 : 192.168.13.131 IP Address and h

Re: [CentOS] mdraid on top of mdraid

On Mar 21, 2011, at 3:21 PM, Emmanuel Noobadmin wrote: >> Since your exporting the storage as iSCSI, the host machine will see >> it as a raw disk, irrespective of how it's setup on the exported >> server. So, yes, you can do this. > > Sorry for my ambiguity, I meant that mdadm would be on the h

Re: [CentOS] Replace NIS by Active Directory

On Mar 18, 2011, at 8:31 AM, "MOKRANI Rachid" wrote: > Hi, > > I'm looking a wiki or share experience for replace NIS authentication by > an existing Active directory Server (W2003). The problem is on the > management of id and gid. > > How to move 1000 actual NIS users to AD ? > How to keep t

Re: [CentOS] Server locking up everyday around 3:30 AM - (INFO: task wget:13608 blocked for more than 120 seconds) need sleep, help.

On Mar 11, 2011, at 12:33 PM, PJ wrote: > This may or may not be CentOS related, but am out of ideas at this > point and wanted to bounce this off the list. > > I'm running a CentOS 5.5 server, running the latest kernel > 2.6.18-194.32.1.el5. > > Almost everyday around 3:30 AM the server compl

Re: [CentOS] CentOS 5.5 does not recognise SAS drives with LSI 1068E Controller

On Mar 10, 2011, at 6:33 PM, Ross Walker wrote: > On Mar 10, 2011, at 3:49 PM, John R Pierce wrote: > >> On 03/10/11 12:40 PM, Les Mikesell wrote: >>> I thought there were also problems in layers like lvm that keep the OS >>> from knowing exactly what happene

Re: [CentOS] CentOS 5.5 does not recognise SAS drives with LSI 1068E Controller

On Mar 10, 2011, at 3:49 PM, John R Pierce wrote: > On 03/10/11 12:40 PM, Les Mikesell wrote: >> I thought there were also problems in layers like lvm that keep the OS >> from knowing exactly what happened. And a lot of software that should >> fsync at certain points probably doesn't because lin

Re: [CentOS] connection speeds between nodes

On Mar 9, 2011, at 8:44 AM, John Hodrien wrote: > On Wed, 9 Mar 2011, Ross Walker wrote: > >> On Mar 8, 2011, at 12:02 PM, John Hodrien wrote: >> >>> The absolute definiton of safe here is quite important. In the event of a >>> power loss, and a fai

Re: [CentOS] connection speeds between nodes

On Mar 8, 2011, at 12:02 PM, John Hodrien wrote: > The absolute definiton of safe here is quite important. In the event of a > power loss, and a failure of the UPS, quite possibly also followed by a > failure of the RAID battery you'll get data loss, as some writes won't be > committed to disk d

Re: [CentOS] connection speeds between nodes

On Mar 8, 2011, at 12:25 PM, John Hodrien wrote: > On Tue, 8 Mar 2011, Ross Walker wrote: > >> Well on my local disk I don't cache the data of tens or hundreds of clients >> and a server can have a memory fault and oops just as easily as any client. >> >> A

Re: [CentOS] connection speeds between nodes

On Mar 8, 2011, at 9:48 AM, Les Mikesell wrote: > On 3/8/11 8:32 AM, Ross Walker wrote: >> >> Why wouldn't you want safe writes? Is that like saying, and if you care for >> your data? > > You don't fsync every write on a local disk. Why demand it over N

Re: [CentOS] yum tries to install a mix of architectures

On Mar 7, 2011, at 9:41 AM, Tim Dunphy wrote: > On my centos boxes whenever I try to install packages I get a mix of > packages from the repos that are both i386 and x86_64 in > archictecture: Yum doesn't implicitly know if you want the 64 or 32-bit versions so it selects both. If you only want

Re: [CentOS] Dell PERC H800 commandline RAID monitoring tools

On Mar 7, 2011, at 3:43 PM, "Dr. Ed Morbius" wrote: > We're looking for tools to be used in monitoring the PERC H800 arrays on > a set of database servers running CentOS 5.5. > > We've installed most of the OMSA (Dell monitoring) suite. > > Our current alerting is happening through SNMP, though

Re: [CentOS] connection speeds between nodes

On Mar 7, 2011, at 9:55 AM, John Hodrien wrote: > On Mon, 7 Mar 2011, Ross Walker wrote: > >> 1Gbe can do 115MB/s @ 64K+ IO size, but at 4k IO size (NFS) 55MB/s is about >> it. >> >> If you need each node to be able to read 90-100MB/s you would need to setup

Re: [CentOS] connection speeds between nodes

On Mar 7, 2011, at 6:12 AM, wessel van der aart wrote: > Hi All, > > I've been asked to setup a 3d renderfarm at our office , at the start it > will contain about 8 nodes but it should be build at growth. now the > setup i had in mind is as following: > All the data is already stored on a Stor

Re: [CentOS] top and allocation issues

On Mar 3, 2011, at 2:21 PM, "Michael D. Berger" wrote: > In a context where exceptions are caught, I ran > the fragment: > > cerr << "allocating" << endl; > char*arr[100]; > for (int jj = 0; jj < 10; ++jj) > { > cerr << "jj = " << jj << endl; > arr[jj] = new char[2

Re: [CentOS] virtualization on the desktop a myth, or a reality?

On Mar 2, 2011, at 12:29 PM, Rudi Ahlers wrote: > I am busy setting up some XEN servers on a SAN for high availability > and Cloud Computing, and thought it could be cool to setup > virtualization on a CentOS 5.5 Desktop, running on a Core i3 + 4GB > RAM, and use the SAN's storage to see if it co

Re: [CentOS] cronjob to intiiate checkdisk ?

On Feb 28, 2011, at 4:49 AM, Roland RoLaNd wrote: > Dear all, > > I'm trying to find a way to automate checkdisk every 1 month on a weekend. > in other words i want checkdisk to run every saturday morning. > > i can of course change the default mount/count though that wont let me > control WHE

Re: [CentOS] how to optimize CentOS XEN dom0?

On Feb 25, 2011, at 9:28 AM, Rudi Ahlers wrote: > On Fri, Feb 25, 2011 at 4:21 PM, Ross Walker wrote: > > >> >> It seems dom0's memory got under pressure from the other domUs. >> >> Make sure to set an absolute minimum of memory for dom0 in xend.con

Re: [CentOS] VMware (was Re: current bind version)

On Feb 25, 2011, at 9:01 AM, Les Mikesell wrote: > On 2/25/11 7:33 AM, Scott Robbins wrote: >> On Thu, Feb 24, 2011 at 10:36:28PM -0800, David Brian Chait wrote: >>> >>> I think you need to download the VI3 rather than 4.1 to use 32 bit support, >>> but it does work. I have it in production on

Re: [CentOS] VMware (was Re: current bind version)

On Feb 25, 2011, at 5:48 AM, Johnny Hughes wrote: > On 02/24/2011 10:47 PM, Les Mikesell wrote: >> On 2/24/11 8:56 PM, Scott Robbins wrote: >>> On Fri, Feb 25, 2011 at 03:44:32PM +1300, Machin, Greg wrote: >>> >>> >>> >>> Rather use ESXi 4.1 and get up and running quickly. If your h

Re: [CentOS] how to optimize CentOS XEN dom0?

On Feb 25, 2011, at 4:29 AM, Rudi Ahlers wrote: > On Wed, Feb 23, 2011 at 4:33 PM, Ross Walker wrote: >> On Feb 23, 2011, at 3:42 AM, Rudi Ahlers wrote: >> >>> On Wed, Feb 23, 2011 at 9:06 AM, yonatan pingle >>> wrote: >>>> you should have a look

Re: [CentOS] current bind version

On Feb 24, 2011, at 8:37 PM, Johnny Hughes wrote: > On 02/24/2011 05:43 PM, Ross Walker wrote: >> On Feb 24, 2011, at 9:31 AM, Johnny Hughes > <mailto:joh...@centos.org>> wrote: >> >>> I am not saying this to be a smart a$$ or be negative ... just saying >

Re: [CentOS] current bind version

On Feb 24, 2011, at 9:31 AM, Johnny Hughes wrote: > I am not saying this to be a smart a$$ or be negative ... just saying > that other enterprise distributions exist that provide long term > stability without backports ... Unbuntu LTS is a free example. They > also provide integration of all the

Re: [CentOS] current bind version

On Feb 23, 2011, at 10:23 PM, John R Pierce wrote: > On 02/23/11 6:08 PM, Machin, Greg wrote: >> >> Hi. >> >> I have had an enquiry from the Network and Security guy. He wants to >> know why CentOS 5.5 /RHEL 5 is using a very old version of bind >> “bind-chroot-9.3.6-4.P1.el5_5.3” when the la

Re: [CentOS] current bind version

On Feb 23, 2011, at 9:08 PM, "Machin, Greg" wrote: > Hi. > > I have had an enquiry from the Network and Security guy. He wants to know why > CentOS 5.5 /RHEL 5 is using a very old version of bind > “bind-chroot-9.3.6-4.P1.el5_5.3” when the latest release that has many > security fixes is on

Re: [CentOS] Alternative to cPanel

On Feb 23, 2011, at 2:04 PM, "Trutwin, Joshua" wrote: >> +1 for Virtualmin. >> People will brag that it's insecure etc, but it has always done the job for >> me >> and I have more than 100 installations of it. I never had security problems >> because of it. > > Thanks for all the posts. > > Cu

Re: [CentOS] how to optimize CentOS XEN dom0?

On Feb 23, 2011, at 3:42 AM, Rudi Ahlers wrote: > On Wed, Feb 23, 2011 at 9:06 AM, yonatan pingle > wrote: >> you should have a look at your I/O disk status. >> >> try with iostat -dx 5 to see the disk utilization info over time. >> when it comes to slowdown on a virtual environment on a Deskto

Re: [CentOS] Air Conditioning - ON!

On Feb 22, 2011, at 3:35 PM, Ian Murray wrote: > Only joking. I take your point, but the critical fixes being held up for a > dot > release isn't really very Enterprise friendly either. I think it fair to say > that CentOS is not suitable for the enterprise unless the servers are > non-public

Re: [CentOS] how do export a block device via eSATA?

On Feb 14, 2011, at 2:27 AM, Rudi Ahlers wrote: > On Mon, Feb 14, 2011 at 4:44 AM, Ross Walker wrote: >> On Feb 13, 2011, at 4:59 PM, Rudi Ahlers wrote: >> >>> On Sun, Feb 13, 2011 at 11:35 PM, John R Pierce wrote: >>>> On 02/13/11 1:21 PM, Rudi Ahler

Re: [CentOS] how do export a block device via eSATA?

On Feb 13, 2011, at 4:59 PM, Rudi Ahlers wrote: > On Sun, Feb 13, 2011 at 11:35 PM, John R Pierce wrote: >> On 02/13/11 1:21 PM, Rudi Ahlers wrote: >>> I'm trying to build a dense eSATA enclosure with say 16 or 24 drives :) >> >> thats a stunningly bad way to go about it. >> >> A) if you want

Re: [CentOS] Looking for back versions of centos 3

On Feb 13, 2011, at 10:22 AM, Nico Kadel-Garcia wrote: > On Sun, Feb 13, 2011 at 8:25 AM, Bruce Ferrell wrote: >> so far all the mirrors I've checked have 3.9 in the directory for 3.x >> >> Can anyone tell me how to get back versions? I'm looking for 3.4 or 3.5 >> >> Thanks in advance >> >>

Re: [CentOS] iSCSI disk preperation

On Feb 8, 2011, at 4:28 PM, Jason Brown wrote: > In our configuration, we are going to have our iSCSI targets and > initiators all connected to the same layer 3 switch and isolate the > iSCSI traffic on separate networks. Would it be beneficial to also set > up multipath for this as well? Most

Re: [CentOS] iSCSI disk preperation

On Mon, Feb 7, 2011 at 3:41 PM, Jason Brown wrote: > On 02/07/2011 03:26 PM, Ross Walker wrote: >> On Mon, Feb 7, 2011 at 1:56 PM, Jason Brown >> wrote: >>> I am currently going through the process of installing/configuring an >>> iSCSI target and cannot find

Re: [CentOS] iSCSI disk preperation

On Mon, Feb 7, 2011 at 3:32 PM, Jason Brown wrote: > On 02/07/2011 02:36 PM, Dr. Ed Morbius wrote: >> on 13:56 Mon 07 Feb, Jason Brown (jason.br...@millbrookprinting.com) wrote: >>> I am currently going through the process of installing/configuring an >>> iSCSI target and cannot find a good write

Re: [CentOS] iSCSI disk preperation

On Mon, Feb 7, 2011 at 1:56 PM, Jason Brown wrote: > I am currently going through the process of installing/configuring an > iSCSI target and cannot find a good write up on how to prepare the disks > on the server.  I would like to mirror the two disks and present them to > the client.  Mirroring

Re: [CentOS] iSCSI disk preperation

On Mon, Feb 7, 2011 at 2:36 PM, Dr. Ed Morbius wrote: > on 13:56 Mon 07 Feb, Jason Brown (jason.br...@millbrookprinting.com) wrote: >> I am currently going through the process of installing/configuring an >> iSCSI target and cannot find a good write up on how to prepare the disks >> on the server.

Re: [CentOS] OT: Recommendations for a virtual storage server

On Jan 31, 2011, at 12:20 PM, carlopmart wrote: > On 01/31/2011 03:57 PM, Ross Walker wrote:>>> virtual machines running on HP > ML115 > server. >>>> >>>> Where is the problem?? Problem is the storage. All storage resides on the >>>> HP

Re: [CentOS] OT: Recommendations for a virtual storage server

On Jan 31, 2011, at 8:58 AM, Les Mikesell wrote: > On 1/31/11 3:20 AM, carlopmart wrote: >> On 01/31/2011 04:05 AM, James A. Peltier wrote: >>> - Original Message -> |>> >>> |> >>> |> Correct. >>> | >>> | But I don't see how any of those things apply here. If the host fails >>> | your

Re: [CentOS] OT: Recommendations for a virtual storage server

On Jan 29, 2011, at 6:04 AM, carlopmart wrote: > On 01/28/2011 03:21 PM, Ross Walker wrote: >> On Jan 28, 2011, at 4:55 AM, carlopmart wrote: >> >>> Hi all, >>> >>> I need to install a virtual machine acting as a virtual storage server >>>

Re: [CentOS] OT: Recommendations for a virtual storage server

On Jan 28, 2011, at 4:55 AM, carlopmart wrote: > Hi all, > > I need to install a virtual machine acting as a virtual storage server under > CentOS 5.x (using kvm, xen, virtualbox or vmware). This virtual storage > machine > needs to server storage to another ESXi server and at the same time

Re: [CentOS] CentOS and Dell MD3200i / MD3220i iSCSI w/ multipath

On Jan 21, 2011, at 7:20 PM, Edward Morbius wrote: > > > On Fri, Jan 21, 2011 at 3:58 PM, Ross Walker wrote: > On Jan 21, 2011, at 6:41 PM, Edward Morbius wrote: > >> We've been wrestling with this for ... rather longer than I'd care to admit. >> >&g

Re: [CentOS] CentOS and Dell MD3200i / MD3220i iSCSI w/ multipath

On Jan 21, 2011, at 6:41 PM, Edward Morbius wrote: > We've been wrestling with this for ... rather longer than I'd care to admit. > > Host / initiator systems are a number of real and virtualized CentOS 5.5 > boxes. Storage arrays / targets are Dell MD3220i storage arrays. > > CentOS is not a

Re: [CentOS] How to disable screen locking system-wide?

On Thu, Jan 20, 2011 at 12:03 PM, wrote: > Lamar Owen wrote: >> On Thursday, January 20, 2011 09:36:09 am Ross Walker wrote: >>> With Amazon's cloud services now I guess they'll have to cut it down to >>> 7 days, or require finger print or retinal eye scans

Re: [CentOS] How to disable screen locking system-wide?

On Jan 20, 2011, at 9:23 AM, m.r...@5-cent.us wrote: > Adam Tauno Williams wrote: >> On Thu, 2011-01-20 at 14:08 +0100, Giles Coochey wrote: >>> On 20/01/2011 13:12, Adam Tauno Williams wrote: On Thu, 2011-01-20 at 11:05 +, John Hodrien wrote: > An account is a personal account that s

Re: [CentOS] How to disable screen locking system-wide?

On Jan 20, 2011, at 9:18 AM, John Hodrien wrote: > On Thu, 20 Jan 2011, Ross Walker wrote: > >> On Jan 19, 2011, at 2:44 PM, Bob Eastbrook wrote: >> >>> By default, CentOS v5 requires a user's password when the system wakes >>> up from the screensaver

Re: [CentOS] How to disable screen locking system-wide?

On Jan 19, 2011, at 2:44 PM, Bob Eastbrook wrote: > By default, CentOS v5 requires a user's password when the system wakes > up from the screensaver. This can be disabled by each user, but how > can I disable this system-wide? Many of my users forget to do this, > which results in workstations

Re: [CentOS] How to disable screen locking system-wide?

On Jan 19, 2011, at 2:44 PM, Bob Eastbrook wrote: > By default, CentOS v5 requires a user's password when the system wakes > up from the screensaver. This can be disabled by each user, but how > can I disable this system-wide? Many of my users forget to do this, > which results in workstations

Re: [CentOS] ext4 or XFS

On Jan 11, 2011, at 7:51 PM, "compdoc" wrote: >>> Lots of protection for your data? Let's see, super aggressive caching and > no data journaling only metadata journaling, what on earth are you > blabbering about? > >>> Use XFS with anything that has no BBU cache support or barrier support and >

Re: [CentOS] Converting to maildir

On Jan 4, 2011, at 8:52 AM, Adam Tauno Williams wrote: > On Mon, 2011-01-03 at 20:17 -0500, Jason Pyeron wrote: >> Looking for a guide on converting to Maildir. >> Here are our relevant specs. >> sendmail-8.12.11-4.RHEL3.6 (we may not be able to upgrade this due to too >> many >> modifications)

Re: [CentOS] OT how to prevent oversubscription of a disk

On Jan 3, 2011, at 8:12 PM, Ross Walker wrote: > On Jan 3, 2011, at 8:10 PM, Ross Walker wrote: > >> On Jan 3, 2011, at 2:39 PM, Dave wrote: >> >>> On Sat, Jan 1, 2011 at 10:06 PM, Gordon Messmer wrote: >>>> On 01/01/2011 05:56 PM, Dave wrote: >&g

Re: [CentOS] OT how to prevent oversubscription of a disk

On Jan 3, 2011, at 8:10 PM, Ross Walker wrote: > On Jan 3, 2011, at 2:39 PM, Dave wrote: > >> On Sat, Jan 1, 2011 at 10:06 PM, Gordon Messmer wrote: >>> On 01/01/2011 05:56 PM, Dave wrote: >>>> >>>> Is there a best practice? People have to be doin

Re: [CentOS] OT how to prevent oversubscription of a disk

On Jan 3, 2011, at 2:39 PM, Dave wrote: > On Sat, Jan 1, 2011 at 10:06 PM, Gordon Messmer wrote: >> On 01/01/2011 05:56 PM, Dave wrote: >>> >>> Is there a best practice? People have to be doing something! >> >> I think that's unlikely. If you don't "oversubscribe" your disk space >> as a matt

Re: [CentOS] installing windows 2008 server( VM) on a centosxenserver

On Jan 3, 2011, at 10:49 AM, Agnello George wrote: > > > On Mon, Jan 3, 2011 at 9:11 PM, Gabriel wrote: > Google xlaunch for windows – run that baby, with the same ssh command, and > it’ll work the same. A good ssh client for windows is Bitvise Tunnilier (I > may have spelt it wrong, but goo

Re: [CentOS] Ext4 on CentOS 5.5 64bit

On Dec 23, 2010, at 4:25 PM, Ross Walker wrote: > On Dec 23, 2010, at 11:21 AM, Christopher Chan > wrote: > >> On Thursday, December 23, 2010 11:08 PM, Ross Walker wrote: >>> On Dec 23, 2010, at 2:12 AM, cpol...@surewest.net wrote: >>> >>>> M

Re: [CentOS] Ext4 on CentOS 5.5 64bit

On Dec 23, 2010, at 11:21 AM, Christopher Chan wrote: > On Thursday, December 23, 2010 11:08 PM, Ross Walker wrote: >> On Dec 23, 2010, at 2:12 AM, cpol...@surewest.net wrote: >> >>> Matt wrote: >>>> Is ext4 stable on CentOS 5.5 64bit? I have an email serve

Re: [CentOS] do i need a dedicated ip address for https?

On Dec 23, 2010, at 3:03 AM, David Hrbáč wrote: > Dne 23.12.2010 1:08, Les Mikesell napsal(a): >> The issue is that the server needs to know the hostname given to the >> browser to find the matching certificate, and the only way to do that >> and stay on the standard port 443 with the apache ve

Re: [CentOS] Ext4 on CentOS 5.5 64bit

On Dec 23, 2010, at 2:12 AM, cpol...@surewest.net wrote: > Matt wrote: >> Is ext4 stable on CentOS 5.5 64bit? I have an email server with a >> great deal of disk i/o and was wandering if ext4 would be better then >> ext3 for it? > > Before committing to ext4 on a production server, it > would be

Re: [CentOS] Intel NIC

On Dec 21, 2010, at 9:41 AM, Drew wrote: > > > On 12/19/2010, John R Pierce wrote: >> On 12/19/10 8:40 AM, Les Mikesell wrote: >>> >>> But the ESXi version isn't exactly fair to someone who would deploy on the >>> hardware intended. Also, the restriction to 1 CPU isn't built-in - >>> there's

Re: [CentOS] Intel NIC

On Dec 18, 2010, at 10:43 AM, Lamar Owen wrote: > On Saturday, December 18, 2010 04:19:25 am Gerhard Schneider wrote: >> The problem with VMWare Server is that it is a discontinued product for >> longer time and they don't provide us with a suitable replacement. > > VMware wants more people to g

Re: [CentOS] RAID help

On Dec 15, 2010, at 10:37 AM, Les Mikesell wrote: > On 12/15/2010 8:49 AM, Ross Walker wrote: >> >>>> >>>> LVM overhead is negligible. It is basically a kernel mapping of virtual >>>> memory space into 4MB+ extents across drives. >>>

Re: [CentOS] RAID help

On Dec 15, 2010, at 4:31 AM, Rajagopal Swaminathan wrote: > Doesn't lvm comes late in the scene? Not if you are putting swap and root on LVM. 2.6 kernels are capable of swapping to partition, file and logical volume with the same performance plus or minus a small overhead (microseconds), but

Re: [CentOS] RAID help

On Dec 14, 2010, at 11:14 PM, Les Mikesell wrote: > On 12/14/10 9:41 PM, Ross Walker wrote: >> On Dec 14, 2010, at 7:01 PM, Les Mikesell wrote: >> >>> On 12/14/2010 5:14 PM, Markus Falb wrote: >>>> >>>>> >>>>> But this only

Re: [CentOS] RAID help

On Dec 14, 2010, at 7:01 PM, Les Mikesell wrote: > On 12/14/2010 5:14 PM, Markus Falb wrote: >> >>> >>> But this only helps if you don't know where you will need to grow. If >>> you know it is going to be under /var, just give it all the space you >>> have in the first place and avoid the over

Re: [CentOS] Installing Centos 5.5 64 bit issues

On Dec 13, 2010, at 11:49 PM, Nico Kadel-Garcia wrote: > On Mon, Dec 13, 2010 at 10:01 AM, benedict dcunha > wrote: >> Dear All, >> >> We have a new SUN BLADE X6270 SERVER MODULES and i am trying to install >> centos 5.5 64 bit . the installations starts fine but when it reaches the >> point in

Re: [CentOS] Issues with CentOS in enterprise

On Dec 13, 2010, at 5:02 AM, lheck...@users.sourceforge.net wrote: >> They are OK with the roll-your-own style of Gentoo? >> >> Especially with it's cutting edge versions, bugs, security holes and the >> only way to overcome them is to upgrade to an even newer version that may >> break compatib

Re: [CentOS] Issues with CentOS in enterprise

On Dec 13, 2010, at 5:02 AM, lheck...@users.sourceforge.net wrote: >> They are OK with the roll-your-own style of Gentoo? >> >> Especially with it's cutting edge versions, bugs, security holes and the >> only way to overcome them is to upgrade to an even newer version that may >> break compatib

Re: [CentOS] Issues with CentOS in enterprise

On Dec 12, 2010, at 11:45 AM, Zdenek wrote: > Hello all. > > Does anybody have experience with pushing CentOS in enterprise? I do, but I have it easy because I am the IT management. > I have the following situation. I tried to promote CentOS to local bank. They > have now a couple of Gentoo-b

Re: [CentOS] What NAS device(s) do you use? And why?

On Dec 12, 2010, at 11:34 AM, Les Mikesell wrote: > On Sun, Dec 12, 2010 at 4:17 AM, Rudi Ahlers wrote: >> >> In one instance we need to host virtual machines, so we don't need >> anything fancy. I'm happy with running iSCSI / NFS and even AOE. >> Currently we have a few 2U SuperMicro servers w

Re: [CentOS] What NAS device(s) do you use? And why?

On Dec 12, 2010, at 5:17 AM, Rudi Ahlers wrote: > On Sun, Dec 12, 2010 at 8:34 AM, Nico Kadel-Garcia wrote: >> On Sat, Dec 11, 2010 at 12:24 PM, Rainer Duffner >> wrote: >> >>> The other question is if it actually works. >>> Too many of the low-cost devices eat the data on the drives, when th

Re: [CentOS] What NAS device(s) do you use? And why?

On Dec 11, 2010, at 5:11 PM, Rainer Duffner wrote: >> >> Go EMC. Support is solid and the units are well designed. >> > > > > But-But - they run Windows on the low-end stuff, don't they? > ;-))) I think they run embedded windows on some of their high-end stuff as well. If done properly th

Re: [CentOS] What NAS device(s) do you use? And why?

On Dec 11, 2010, at 11:15 AM, Rudi Ahlers wrote: > If you use any NAS (or a SAN) devices, what do you use? And I'm > referring more to larger scale network storage than your home PC or > home theater system. > > We've had very good experiences with our NetGear ReadyNAS devices but > I'm in the m

Re: [CentOS] Optimal VPN

On Dec 10, 2010, at 8:48 AM, Les Mikesell wrote: > On 12/10/10 2:42 AM, David Sommerseth wrote: >> On 09/12/10 17:29, Steve Clark wrote: >>> On 12/09/2010 10:30 AM, David Sommerseth wrote: On 25/11/10 14:12, j.witvl...@mindef.nl wrote: >> [...snip...] > Furthermore, openvpn is only

Re: [CentOS] PERC 6/E continue switch between "write though" and "write back"????

On Dec 9, 2010, at 10:41 AM, mcclnx mcc wrote: > We have several DELL R900 server with PERC 6/E adapter in it. O.S. is CENTOS > 5.5. recently one of server continue pop-up messages on /var/log/message for > switch status between "write back" and "write through". > > ==

Re: [CentOS] IPV4 is nearly depleted, are you ready for IPV6?

On Dec 7, 2010, at 9:20 PM, Adam Tauno Williams wrote: > On Tue, 2010-12-07 at 20:37 -0500, Ross Walker wrote: >> On Dec 7, 2010, at 7:41 PM, Nico Kadel-Garcia wrote: >> >>> On Tue, Dec 7, 2010 at 10:04 AM, Adam Tauno Williams >>> wrote: >>> >>

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