I haven't tried it but could you possibly use a database to hold all
those files instead? At less than 4K per row, performance from an
indexed database might be faster.
On 3/12/11, Alain Spineux aspin...@gmail.com wrote:
Hi
I need to store about 250.000.000 files. Files are less than 4k.
On
On 3/2/11, Rudi Ahlers r...@softdux.com wrote:
I'm very interested to find out what happened with this project and
what you ended up doing?
There were delays after changes after delays for that project that was
meant to run on the VM setup. Spent more time hacking temporary
solutions to their
I was looking up on iSCSI in preparation and became aware that there
are different iSCSI software/drivers/whatever-is-the-correct-term
available. e.g.
IET http://iscsitarget.sourceforge.net/
SCST http://scst.sourceforge.net/
STGT http://stgt.berlios.de/
LIO http://linux-iscsi.org/
Based on
Thanks for the confirmation and the note about LIO
On 3/13/11, Ray Van Dolson ra...@bludgeon.org wrote:
On Sun, Mar 13, 2011 at 02:41:07AM +0800, Emmanuel Noobadmin wrote:
I was looking up on iSCSI in preparation and became aware that there
are different iSCSI software/drivers/whatever
Is it possible or will there be any problems with using mdraid on top of mdraid?
specifically say
mdraid 1/5 on top of mdraid multipath.
e.g. 4 storage machines exporting iSCSI targets via two different
physical network switches
then use multipath to create md block devices
then use mdraid on
Is it possible or will there be any problems with using mdraid on top of mdraid?
specifically say
mdraid 1/5 on top of mdraid multipath.
e.g. 4 storage machines exporting iSCSI targets via two different
physical network switches
then use multipath to create md block devices
then use mdraid on
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 host machine.
e.g. Using just a 2 node, raid 1 situation
Storage 1
You'll have really poor
performance if you raid over iscsi...
I've spent more time thinking about this and reading over my
research.The crux here seems to be that while RAID does impose
additional write IOPS costs, it may be more than offset by the read
advantage. According to my own notes
Searching more on this, the consensus seems to be that RAID 1/10 on
iSCSI is quite okay and may provide read performance increase but RAID
5's iops penalty will probably be a killer.
if you can use 2 dedicated ethernet adapters to 2 iSCSI servers for
this mirror, its probably a win.
That
On 3/29/11, mcclnx mcc mcc...@yahoo.com.tw wrote:
we have several servers on same rack and servers are all inside firewall.
Centos version from 4.X to 5.X. sometime the connection are very slow
(compare to servers on other racks also inside firewall).
we discuss with network engineer he ask
On 3/29/11, mcclnx mcc mcc...@yahoo.com.tw wrote:
I don't think it is cable problem. The reason are:
1. it happen every 3 to 4 weeks once.
2. problem last 4 to 5 hours then back to normal.
3. not one server has this problem, several servers on that rack all have
problem at same time.
Did
This was done on a trailling basis for a couple side arch's
builders by me and another. It turns out to be a lot of
chatter and 'noise', and not much 'signal'
Although it might not be of any real use in indicating when a version
would be ready, I think it helps a lot psychologically when
On 4/6/11, John R Pierce pie...@hogranch.com wrote:
On 04/05/11 11:32 PM, Emmanuel Noobadmin wrote:
A lot of the anxiety seems to be about the silence about any kind of
progress.
there's a fair amount of traffic on centos-devel
archives here,
http://lists.centos.org/pipermail/centos-devel
On 4/8/11, Ian Murray murra...@yahoo.co.uk wrote:
If you do not like how your hairdresser does you hair you will go to
other one. If you do not like the taste of bread you are buying, you
will go and by from other bakery.
I have never been insulted or belittled by my hairdresser as we
On 4/8/11, Rudi Ahlers r...@softdux.com wrote:
On Thu, Apr 7, 2011 at 10:58 PM, R P Herrold herr...@owlriver.com wrote:
and so we should tell people:
We will ship it when it is done; please come back
then
Got it. Great idea
Isn't that what you've beeb telling people this
On 4/12/11, jvalido...@juanyjosefina.com jvalido...@juanyjosefina.com wrote:
For me mdadm is fine but if I set a server for a friend, relative or client
I want to be notified by email if something goes wrong, I mostly (99.5%)
work on windows so I don't really know what's out there for Linux. I
On 4/12/11, John R Pierce pie...@hogranch.com wrote:
On 04/11/11 5:41 PM, John R. Dennison wrote:
DO NOT TOP POST.
sadly, gmail/googlemail is very hostile to proper quoting practices.
it hides quoted text, while leaving the whole previous message appended,
without any form of quoting. The
I've got a server that initially was connected to a static WAN
connection via eth0. Now I've added a second NIC eth1 connected to a
local network switch with the intention of using it as a backup remote
access connection via a dynamic ADSL connection.
The problem now is getting the IP address of
Hi,
When I do the install, do I or should I setup a separate partition for guest
That would be better from a performance point of view
OS's? From the redhat docs, it looks like the guest OS's reside at
/var/lib/libvirt/images/.
This should be using files as disk files, which I did and found
On 9/15/11, Always Learning cen...@u61.u22.net wrote:
I have written 20+ complete systems using these and found them to be
fast and very effective. Everyone who has seen my HTML, CSS, PHP, MySQL
systems has been favourably impressed (me too!). MySQL is a fast
database system. Never ever used a
On 9/15/11, Always Learning cen...@u61.u22.net wrote:
Next you'll be saying you don't use triggers and constraints either.
Not consciously. Never heard of them.
You should take a look at constraints, they are good for ensuring
certain types of data integrity. For example, it would make the
On 9/16/11, m.r...@5-cent.us m.r...@5-cent.us wrote:
I've done a lot of what we used to call embedded SQL, and when I did do a
join, it was *not* an explicit join. I've also used right or left once?
twice? ever? But then, I carefully design and code my queries.
So it's more like a series of
On 9/16/11, m.r...@5-cent.us m.r...@5-cent.us wrote:
You *need* both. Take too long, and the user will go somewhere else.
Of course :D
I remember hearing about another division, a bunch of years ago, when I
worked at the Scummy Mortgage Co. (name available upon request, offline),
where the
On 9/16/11, Always Learning cen...@u61.u22.net wrote:
Data is generally stored once. However because of legal requirements a
customer's invoicing name and address and delivery address will be
copied from the customer file and permanently stored in an invoice's
header record. This means when
On 9/16/11, Always Learning cen...@u61.u22.net wrote:
Before anyone can add data for customer 9865, the existing customer
record is displayed on the screen. This helps the user to be sure he/she
has got the correct customer. A customer not found message means the
record does not exist.
On 9/16/11, Always Learning cen...@u61.u22.net wrote:
C1
c1ref
c1customer (code)
c1quantity (integers only)
c1price (in cents)
c1discount (2 decimal places held as integers)
c1catalogue (code)
c1date
On 9/16/11, m.r...@5-cent.us m.r...@5-cent.us wrote:
Remember, even among those who studied, a) half of them were in the bottom
of their class, and b) too many are True Believers in the latest
programming (not the P word!) paradigm; y'know, recursion is the answer to
*everything*, or OO,
On 9/17/11, Always Learning cen...@u61.u22.net wrote:
and it is not black
color: #464646;
While the exact optimal shade is arguable (a tad too light IMO), past
ergonomics studies indicate that extreme contrast such as #00 on
#ff is more tiring to read so can't really fault the
On 9/21/11, Al Sparks data...@yahoo.com wrote:
Some observations.
When I installed 6.0 (base install), the installation interface did not
guide me through a network configuration. I do static IP addresses, not
DHCP.
IIRC, it's in this small unobstrusive rectangular box that says Setup
On 9/23/11, Volker Poplawski vol...@openbios.org wrote:
Hi all,
I'm facing a serious problem with the e100e kernel module for Intel
82574L gigabit nics on Centos 6.
The device eth0 suddenly stops working i.e. no more networking. When I
do ifconfig from console I get
.
.
.
Bringing down the
On 9/24/11, Johnny Hughes joh...@centos.org wrote:
I can tell you that we are building 6.x stuff for QA now and have been
for several weeks.
I'm not personally unhappy with the devs over the situation since I
pretty much didn't plan on any critical C6 installations until 6.1
comes out. So with
On 9/24/11, Lamar Owen lo...@pari.edu wrote:
I don't think you understand. The process is iterative; if QA fails it's
all the way back up to building it again. A package may have existed three
weeks ago in terms of being built; if that package had passed binary testing
and QA it would have
On 9/24/11, Johnny Hughes joh...@centos.org wrote:
Yes, I suck at communication. Just ask my 1st wife.
Does that mean that the whole dev team are just going to chalk it up
to poor communications, shrug and not do anything about the
communication channel, despite the existence of the qaweb and
On 9/24/11, TE Dukes tdu...@palmettoshopper.com wrote:
OK,
So how can we help getting CentOS 6.1 released? This is a Community
project. I'm not a programmer, IT person but I do ask a lot of help from
this list. What do we need to do or how can the 'average person' help? Can
you send us some
On 9/24/11, Eric Sisolak haldir.j...@gmail.com wrote:
This is usually caused by not having enough RAM. I think for el5 you need
either 512 or 768MB and for el6 it is more like 1GB (IIRC).
Should be 768MB for EL6 based on my recent EL6 VM installation. It
just seem rather silly that the
On 9/27/11, Benjamin Smith li...@benjamindsmith.com wrote:
When booting a non-working system, it boots straight up to the boot prompt
(runlevel 3) without issue, and everything works fine. When the machine sits
idle for a period of time (ranging from 15 minutes or so and up) the HDD
becomes
On 9/27/11, Muhammad Panji sumodi...@gmail.com wrote:
Dear All,
I have an onboard Realtek RTL8111/8168B NIC. from lspci -vv :
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02)
It is detected, but why the speed is
On 9/27/11, Benjamin Smith li...@benjamindsmith.com wrote:
I wish you the best of luck!
Fortunately (or unfortunately depending on how one looks at it), mine
appears to be just bad sectors developing on one of the newest
drive I added to the machine as part of a mdadm RAID 1 array.
After I
On 10/4/11, m.r...@5-cent.us m.r...@5-cent.us wrote:
Note that the above is true of every single o/s: for example, I think
Windows XP is approaching EoL, while Internet Exploder 6 is *past* that
(and there was much rejoicing).
IIRC WinXP is already EoL'd for general end users but still a
On 10/8/11, Bob Hoffman b...@bobhoffman.com wrote:
Gotta say, centos has been tough to install and get working.
The anaconda installer makes large drive setups horridly tedious
(especially if reinstalling a lot).
I usually try to speed reinstall up by using small / and not
reformating /home.
On 10/13/11, whitivery co55-s...@dea.spamcon.org wrote:
Eth0 is the onboard device, using an updated VIA Velocity driver
(velocityget 1.42 instead of default via-velocity):
05:00.0 Ethernet controller: VIA Technologies, Inc. VT6120/VT6121/VT6122
Gigabit Ethernet Adapter (rev 82)
Eth1 is a
On 10/19/11, whitivery co55-s...@dea.spamcon.org wrote:
Thank you for the reply, but I don't think that this is the issue.
Otherwise bonding failover wouldn't work at all. When enslaved in order
eth1 eth0, bonding and link detection work properly - with eth0 set as
primary, I pull the eth0
On 4/12/11, Rudi Ahlers r...@softdux.com wrote:
But, our RAID10 is setup as a stripe of mirrors, i.e. sda1 sdb1 - md0,
sdc1 + sdd1 -md1, then sde1 + sdf1 -md2, and finally md0 + md1 + md2 are
stripped. The advantage of this is that we can add more disks to the whole
RAID set with no downtime
On 4/13/11, Brandon Ooi brand...@gmail.com wrote:
centos 5 can expand raid 0/1/5. just not 6. 10 is just layered 0/1 so you
can expand it.
centos 6 will be able to expand raid6 as it was a feature in 2.6.20 or
something.
This is where I'm getting confused. I had been reading up on mdadm,
On 4/13/11, Rudi Ahlers r...@softdux.com wrote:
I haven't had problems doing it this way yet.
Thanks for the confirmation. Could you please outline the general
steps to expand an existing RAID 10 with another RAID 1 device?
I'm trying to test this out but unfortunately being the noob that I
am,
On 4/13/11, Rudi Ahlers r...@softdux.com 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 able to add another
RAID 1 component to the array with the
On 4/14/11, Phil Schaffner philip.r.schaff...@nasa.gov wrote:
Johnny Hughes wrote on 04/13/2011 12:55 PM:
CentOS is ... right now ... deployed on 29% of web
servers on the Internet that use Linux.
That 28.9% is down from the high of 33.5% in Oct. 2010 or a 13.8% decrease.
On 4/14/11, Ross Walker rswwal...@gmail.com wrote:
You can't expand a mdraid raid0.
I believe you can expand a mdraid raid10,5,6, but not raid0.
That was what I thought previously when looking into this and weighing
the pros/cons of using RAID 10 vs RAID 5.
But earlier this week, from the
On 4/14/11, John R Pierce pie...@hogranch.com wrote:
since this is the centos list, I really didn't want to suggest this, but
if I was building a 20 or 40TB or whatever storage server, I do believe
I'd be strongly consider using Solaris, or one of its variants like
OpenIndiana, with ZFS.
ZFS
On 4/21/11, John R. Dennison j...@gerdesas.com wrote:
The only sentiment picked up on was that of a loud, minuscule and
irrelevant fraction of the user base from this and the -devel mailing
lists. He went with the loudest group of whiners he could find.
Perhaps only a small handful keep
I'm having problems trying to install CentOS as a KVM guest despite
following the wikis and howtos.
The problem is that most of the instructions skip the part that
happens after virt-install... It seems that something blindingly
obvious happens if nothing goes wrong and most instructions
Hirvi listmem...@greenspot.fi wrote:
On 26.4.2011 0.47, Emmanuel Noobadmin wrote:
I'm having problems trying to install CentOS as a KVM guest despite
following the wikis and howtos.
I succeeded with this howto:
http://sysadminman.net/blog/2011/kvm-virtualization-text-centos-guest-install-2098
is the problem, I decided to mount it to
check, since it looked OK. I tried another install using the mount
point and I no longer have a blank console :)
So the key is to mount ISO before using as installation source.
On 4/26/11, Emmanuel Noobadmin centos.ad...@gmail.com wrote:
Thanks for both
Unfortunately, things still don't work.
rant
It's just ridiculous that the installer under KVM does not detect the
cdrom drive it was booted from. Trying to do a net-install doesn't
work, maybe I messed up the networking even though br0 and eth0 is
working on the host.
Nevermind, let's install
On 4/28/11, Jussi Hirvi listmem...@greenspot.fi wrote:
I understand you so well, I have been so frustrated too with
virt-install. Virt-manager is probably an easier way to install, but
text-based virt-install is very cranky (my experience). Maybe the devs
concentrate on the GUI side. Hope not.
On 4/28/11, Jussi Hirvi listmem...@greenspot.fi wrote:
I tried it too, didn't work. Try virt-install without creating the image
first. Virt-install will create the image (type raw) on the go. If you
want qcow2, you can convert the image later. Qcow2 has some special
features but is slower than
On 4/28/11, Simon Grinberg si...@redhat.com wrote:
What version of VMWare are you using?
Currently, I'm not using VMWare yet on this new server as I really do
hope to be able to use an unified solution. But so far, it's just
one brickwall after another. I've given myself until this weekend to
On 4/28/11, Jussi Hirvi listmem...@greenspot.fi wrote:
For me creating the images does not take any noticeable time. Only when
the installer formats the disk to ext3 (or others), it will take some
time. Probably your syntax does not work. Try the syntax in my example, like
--disk
On 4/28/11, Gleb Natapov g...@redhat.com wrote:
So why don't you use virt-manager?
The original intention was to run the host without any graphical
desktop or anything not necessary to host the guests. That was based
on reading and such which recommends not having anything beyond the
necessary
On 4/28/11, Gleb Natapov g...@redhat.com wrote:
Qemu is not intended to be used directly by end user. It is too complex as
you already found out. VMware don't even give you access to such low parts
of virt stack. You should use libvirt or virt-manager instead. Especially
if you are concerned
On 4/28/11, Johnny Hughes joh...@centos.org wrote:
You don't have to run an entire X desktop on the server to use
virt-manager there.
If you have a graphical linux workstation on the same network (x can be
slow across a WAN, so I would only do it locally), you can just do this
from the
Is there a way to switch the display/console while connected while SSH
to another display e.g /dev/pts/X ?
The purpose is because qemu-kvm diverts the char device output to
/dev/pts/X so there's no further way to view/interact with the VM.
___
CentOS
On 4/28/11, Gleb Natapov g...@redhat.com wrote:
of virt stack. You should use libvirt or virt-manager instead. Especially
if you are concerned about security. I think libvirt can start guest on
headless server.
If this still fails for you you need to complain to libvirt developers
(not in a
Is it possible to assign multiple IP addresses to a bridge the same
way ethernet devices can?
The purpose is to accept incoming traffic for multiple public IP.
1 Physical NIC
- br0 (accepts incoming traffic for x.x.x.2 to x.x.x.5)
Then 3 different virtual interfaces are connected to this bridge
On 4/29/11, Lucian luc...@lastdot.org wrote:
Something seems out of order with the above; may I ask what exactly
you are trying to achieve?
Unless I read it all wrong you want (i.e.) x.x.x.2 on br0 and also on
eth0? This cannot work.
Well, I have a physical connected to the ISP modem/router
On 4/29/11, Emmanuel Noobadmin centos.ad...@gmail.com wrote:
Only problem is... networking still isn't working although brctl show
on the host shows that a vnet0 had been created and attached to the
bridge. Any pointers would be appreciated!
Just to close off on this issue for the benefit
On 4/29/11, Lucian luc...@lastdot.org wrote
So .2 works as main IP and .3 does not?
Is your ISP doing any MAC address filtering? You may need to use a
routed bridge then..
It turns out that I was barking up the wrong tree and chasing red herrings.
The virtualized guest definition was off by
On 5/12/11, Phil Schaffner philip.r.schaff...@nasa.gov wrote:
Apparently they did admit and it does change:
https://www.centos.org/modules/newbb/viewtopic.php?topic_id=31347forum=53
Late breaking news:
http://qaweb.dev.centos.org/qa/node/67
http://qaweb.dev.centos.org/qa/node/69
This is
On 5/17/11, m.r...@5-cent.us m.r...@5-cent.us wrote:
If we *really* need a moderator, here's an option: soc.religion.paganism
has a robomoderator; on topic posts get autoapproved, obviously off-topic
get bounced, and if there's any question, they get randomly bounced to a
configurable number
On 5/19/11, m.r...@5-cent.us m.r...@5-cent.us wrote:
As already said, this sounds really complicated. Coming from an IRC
and vBB admin background, I'll suggest moderation using the reactive
approach instead of a automated process.
Not really. The perl script was written, um, around 1993 or
On 5/19/11, Johnny Hughes joh...@centos.org wrote:
Can we do a better job at some things, sure. But trust me, CentOS is
going nowhere.
I think you might mean CentOS is not going away since going
nowhere fast or slow is bad news for those waiting for the next
version ;)
On 5/22/11, yonatan pingle yonatan.pin...@gmail.com wrote:
the only way to go with SSD is RAID due to these reasons.
it's unlikely that two disks will die at the same time, so it's
possible to use and enjoy them ,
but don't forget to have a fresh backup and a raid array. ( that
should be done
On 5/24/11, Benjamin Franz jfr...@freerun.com wrote:
On 05/24/2011 08:25 AM, Rudi Ahlers wrote:
I know you get some USB type SSD's, but people still refer to them as
SSD drives, and not USB drives
The correct way to describe it is 'a SSD drive *with a USB interface*'
or 'a SSD drive *with a
On 5/26/11, Kevin K kevi...@fidnet.com wrote:
Though thumb drives are flash, they tend to use a slower flash than what is
used in hard drive replacement units.
No actual industry facts for this, but I think the Flash used in thumb
drives are not really any slower by nature/design. This is
On 5/26/11, John Hodrien j.h.hodr...@leeds.ac.uk wrote:
Spinning disks seem an awful lot like victorian technology taken too far.
In
the long term, what's *not* to like about the idea of fully solid state
storage?
Personally, I'm averse to using SSD with any important long term data
is the
On 5/26/11, Simon Matter simon.mat...@invoca.ch wrote:
On 5/26/11, Kevin K kevi...@fidnet.com wrote:
Though thumb drives are flash, they tend to use a slower flash than what
is
used in hard drive replacement units.
No actual industry facts for this, but I think the Flash used in thumb
On 5/28/11, James B. Byrne byrn...@harte-lyne.ca wrote:
4. Gain operational flexibility: Respond to market changes with
dynamic resource management, faster server provisioning and
improved desktop and application deployment.
I have no idea how deploying VMs to a company's desktop
I'm trying to figure out what's causing an average system load of 3+
to 5+ on an Intel quad core. The server has with 2 KVM guests
(assigned 1 core and 2 cores) that's lightly loaded (0.1~0.4) each.
Both guest/host are running 64bit CentOS 5.6
Originally I suspected maybe it's i/o but on
You'll probably be able to use rsync to copy everything from your
server first before the re-install.
Something like rsync -avcz --partial --progress --rsh=ssh
your_login@your_server.com:/home/path_to_folder/*
/home/path_to_local_folder
Possibly also need to copy the config files for whatever
On 6/9/11, MR ZenWiz mrzen...@gmail.com wrote:
Sorry for the cross-post, and off-topic at that, but:
This morning I received a very authentic looking email from
info.paypal.com, claiming that Paypal wanted me to update my browser.
(Really.)
It had my name in it and all the right graphics
I'm trying to resolve an I/O problem on a CentOS 5.6 server. The
process basically scans through Maildirs, checking for space usage and
quota. Because there are hundred odd user folders and several 10s of
thousands of small files, this sends the I/O wait % way high. The
server hits a very high
On 6/9/11, Mathias Burén mathias.bu...@gmail.com wrote:
The first thing that comes to my mind: Have you tried another IO scheduler?
and the first thing that came to this noob's mind was: Wait, you mean
there's actually more than one? AND I get to choose?
I'll probably be experimenting with
On 6/9/11, Benjamin Franz jfr...@freerun.com wrote:
You should look at running your process using 'ionice -c3 program'. That
way it won't starve everything else for I/O cycles. Also, you may want
to experiment with using the 'deadline' elevator instead of the default
'cfq' (see
On 6/9/11, Steven Tardy s...@its.msstate.edu wrote:
top Cpu(s) line is averaged for all cpus/cores. to display individual
cpus/cores press:
1
you'll likely see one cpu/core being pegged with iowait.
to identify the offending process within top press:
fjenter
to display the P
On 6/10/11, Markus Falb markus.f...@fasel.at wrote:
Yes, but before doing this be sure that your Software does not need atime.
For a brief moment, I had that sinking Oh No... why didn't I see this
earlier feeling especially since I've already remounted the
filesystem with noatime.
Fortunately,
On 6/10/11, Steven Tardy s...@its.msstate.edu wrote:
did you set noatime on the host filesystem and/or the VM filesystem?
i would think noatime on the VM would provide more benefit than on the
host...
shrug. now my brain hurts. gee thanks. (:
I was trying it on the host first, thinking that
On 6/10/11, Eero Volotinen eero.voloti...@iki.fi wrote:
This is not same case, I need publickey and normal password
authentication. not password protected privatekey.
How about using the ForceCommand described here
https://calomel.org/openssh.html to add a second layer of
authentication. In his
On 6/10/11, Gordon Messmer yiny...@eburg.com wrote:
atime and mtime are updated for *every* read and write operation, not
for the open() of the file.
Ok. In any case, the combination of atime and ionice on the cronjob
seems to have helped, no locked up in the past 24 hours. But it is a
Saturday
On 6/16/11, Gordon Messmer yiny...@eburg.com wrote:
I read somewhere recently that people were complaining abut LVM overhead
and poor performance, but I've never seen any evidence of it. Was there
something that made you think that LVM had significant overhead?
Looking at some very sparse
On 6/14/11, James A. Peltier jpelt...@sfu.ca wrote:
The rules are parsed, applied and the permissions are then correct but why
is it not doing so at boot? The file in questions I've called
/etc/udev/rules.d/49-udev-override.rules and it contains
KERNEL==tty[A-Z]*,NAME=%k,
On 6/16/11, Gordon Messmer yiny...@eburg.com wrote:
I think you were misinformed, or misled.
That wouldn't be new for me as far as system administration is concerned :D
LVM should not present any
noticeable overhead on the host. Using raw files to back VMs presents
a significant overhead to
On 6/16/11, John R Pierce pie...@hogranch.com wrote:
actually, its 40-60%, I believe. and you should have a humidifier as
part of your A/C, since cooling air sucks the moisture out of it. I
would NOT rely on a fishtank to provide any significant humidity.
Well, can't be so sure the fish
On 6/20/11, Jerry Geis ge...@pagestation.com wrote:
I have noticed that only around the 4am-4:15 time frame when the trim is
happening does my
other process log connection attempts but my process (forking and
opening databases) is not responding in time to give data back
to the connecting
I was trying to do some performance testing between using iSCSI on the
host as a diskfile to a guest vs the VM guest using the iSCSI device
directly.
However, in the process of trying to establish a baseline performance
figure, I started increasing the MTU settings on the PCI-express NICs
with
On 6/24/11, Tim Nelson tnel...@rockbochs.com wrote:
Realtek NICs are known to be some of the poorest interfaces available. A
quality Intel or Broadcom NIC will set you back very little in terms of
cost. Just replace it and be done. :)
I was afraid that might be the case (already had two Intel
On 6/24/11, Christopher Chan christopher.c...@bradbury.edu.hk wrote:
On Friday, June 24, 2011 01:20 AM, Emmanuel Noobadmin wrote:
First bottleneck was discovering the max MTU allowed on these is 7K
instead of 9K but googling seems to indicate that the RTL8168B is only
capable of 4K frames
On 6/24/11, Ljubomir Ljubojevic off...@plnet.rs wrote:
Try ElRepo driver and please report if that helps. I would like to know
your experience with ElRepo driver.
The ElRepo driver appears to work, I don't get an error when
increasing the MTU but I'll need to solve another problem before I can
I'm trying to do some network transfer test using NFS. The problem is
when I try to eliminate the possibility of the hard disks being the
bottleneck. I am unable to export /dev/shm as a NFS share. Initially
there was an error about fsid or wrong filesystem.
If I use a symbolic such as /home/test
On 6/24/11, John Hodrien j.h.hodr...@leeds.ac.uk wrote:
/dev/shm's how I would do it.
Make a file on /dev/shm and the format it, mount it, export it.
dd if=/dev/zero of=/dev/shm/export bs=1M count=1000
mke2fs -j /dev/shm/export
mount -o loop /dev/shm/export /mnt/foo
Then export /mnt/foo
On 6/26/11, Gordon Messmer yiny...@eburg.com wrote:
I don't know anything specifically about those cards, but you'll see
that behavior on any card unless all of the hosts on a broadcast domain
are using the same MTU. You need to set all of the devices on a LAN
segment, including the router,
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