[CentOS] KVM Host Disk Performance
Hello all, I'm having quite an interesting time getting up to speed with KVM/QEMU and the various ways of creating virtual Guest VMs. But disk I/O performance remains a bit of a question mark for me. I'm looking for suggestions and opinions This new machine has tons of disk space, lots of CPU cores and loads of RAM, so those are not issues. I currently have several software RAID-6 md's, each of which is about 700 GBytes. The md's are created as partitionable arrays, and I assign the resulting raw disk devices to each CentOS Guest OS, which then partitions the space according to its needs. Unlike using the more common filesystem-in-a-file method, the use of partitionable MD devices usually results in wasted disk space, but my aim is to provide the best performance possible with robust RAID. Is there a better-performing way of assigning disk space to Guest VMs? What about 'qcow2'? I understand its copy-on-write offers several advantages, but does it perform better than using partitionable md arrays or does the underlying filesystem overhead get in the way? Perhaps the native overhead of RAID-6 dual parity makes the whole question moot. Would the use of RAID-10 with hot spares be paranoid enough? I'm using 2 TByte drives which inherently have much greater chances of data errors, so I must keep data reliability in mind. I don't want to start a religious war over RAID and Guest VM disk methodology, but I have the luxury of trying various disk configurations until I get a reasonable balance between performance and reliability with these large drives. So many questions ... so much to learn. Lots of Googling around is quite useful but can lead to information overload :-) Cheers, Chuck ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] KVM Host Disk Performance
Cannot give you any useful input but I am certainly interested in any progress you make, so keep communicating :D Dawid -Original Message- From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of Chuck Munro Sent: Sonntag, 3. April 2011 19:47 To: CentOS Maiing List Subject: [CentOS] KVM Host Disk Performance Hello all, I'm having quite an interesting time getting up to speed with KVM/QEMU and the various ways of creating virtual Guest VMs. But disk I/O performance remains a bit of a question mark for me. I'm looking for suggestions and opinions This new machine has tons of disk space, lots of CPU cores and loads of RAM, so those are not issues. I currently have several software RAID-6 md's, each of which is about 700 GBytes. The md's are created as partitionable arrays, and I assign the resulting raw disk devices to each CentOS Guest OS, which then partitions the space according to its needs. Unlike using the more common filesystem-in-a-file method, the use of partitionable MD devices usually results in wasted disk space, but my aim is to provide the best performance possible with robust RAID. Is there a better-performing way of assigning disk space to Guest VMs? What about 'qcow2'? I understand its copy-on-write offers several advantages, but does it perform better than using partitionable md arrays or does the underlying filesystem overhead get in the way? Perhaps the native overhead of RAID-6 dual parity makes the whole question moot. Would the use of RAID-10 with hot spares be paranoid enough? I'm using 2 TByte drives which inherently have much greater chances of data errors, so I must keep data reliability in mind. I don't want to start a religious war over RAID and Guest VM disk methodology, but I have the luxury of trying various disk configurations until I get a reasonable balance between performance and reliability with these large drives. So many questions ... so much to learn. Lots of Googling around is quite useful but can lead to information overload :-) Cheers, Chuck ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] KVM Host Disk Performance
I'm having quite an interesting time getting up to speed with KVM/QEMU and the various ways of creating virtual Guest VMs. But disk I/O performance remains a bit of a question mark for me. I'm looking for suggestions and opinions It's possible to set up guests to use a block device that will get you the same disk I/O as the underlying storage. Is that what you're seeing? What speed does the host see when benchmarking the RAID volumes, and what speeds do the guests see? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Download the repo DAG of CentOS 5.5
hello somebody might help to create a script to download the repo DAG of CentOS 5.5 to my PC. I already did with OS, Update, and Extras packages. I want to do with DAG repository. I tried but I don't know much about scripts. Thanks Fidel ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Download the repo DAG of CentOS 5.5
I believe there is a rpm available from the DAG site, that will install the .repo file and setup everything you need to access the repo Ak --Original Message-- From: Fidel Dominguez-Valero Sender: centos-boun...@centos.org To: centos@centos.org ReplyTo: CentOS mailing list Subject: [CentOS] Download the repo DAG of CentOS 5.5 Sent: Apr 3, 2011 2:12 PM hello somebody might help to create a script to download the repo DAG of CentOS 5.5 to my PC. I already did with OS, Update, and Extras packages. I want to do with DAG repository. I tried but I don't know much about scripts. Thanks Fidel ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos Sent from my BlackBerry device on the Rogers Wireless Network ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Download the repo DAG of CentOS 5.5
On 4/3/2011 2:12 PM, Fidel Dominguez-Valero wrote: hello somebody might help to create a script to download the repo DAG of CentOS 5.5 to my PC. I already did with OS, Update, and Extras packages. I want to do with DAG repository. I tried but I don't know much about scripts. Thanks Fidel Hello Fidel, This should help you out: http://dag.wieers.com/rpm/FAQ.php#B1 W. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Download the repo DAG of CentOS 5.5
yes, I know that but I want to download for make a local repository On Sun, 2011-04-03 at 18:16 +, aly.khi...@gmail.com wrote: I believe there is a rpm available from the DAG site, that will install the .repo file and setup everything you need to access the repo Ak --Original Message-- From: Fidel Dominguez-Valero Sender: centos-boun...@centos.org To: centos@centos.org ReplyTo: CentOS mailing list Subject: [CentOS] Download the repo DAG of CentOS 5.5 Sent: Apr 3, 2011 2:12 PM hello somebody might help to create a script to download the repo DAG of CentOS 5.5 to my PC. I already did with OS, Update, and Extras packages. I want to do with DAG repository. I tried but I don't know much about scripts. Thanks Fidel ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos Sent from my BlackBerry device on the Rogers Wireless Network ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Download the repo DAG of CentOS 5.5
Yes, I know that, but I want to download for make a local repository On Sun, 2011-04-03 at 14:25 -0400, Winter wrote: On 4/3/2011 2:12 PM, Fidel Dominguez-Valero wrote: hello somebody might help to create a script to download the repo DAG of CentOS 5.5 to my PC. I already did with OS, Update, and Extras packages. I want to do with DAG repository. I tried but I don't know much about scripts. Thanks Fidel Hello Fidel, This should help you out: http://dag.wieers.com/rpm/FAQ.php#B1 W. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Download the repo DAG of CentOS 5.5
2011/4/3 Fidel Dominguez-Valero fdval...@gmail.com: Yes, I know that, but I want to download for make a local repository just use reposync to mirror it to local repository. -- Eero ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] certification
Hi there, Is there any change of certification on CentOS 5+ in the nearby future? Thanks for your time, Marco ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Download the repo DAG of CentOS 5.5
On 4/3/2011 2:33 PM, Fidel Dominguez-Valero wrote: Yes, I know that, but I want to download for make a local repository On Sun, 2011-04-03 at 14:25 -0400, Winter wrote: On 4/3/2011 2:12 PM, Fidel Dominguez-Valero wrote: hello somebody might help to create a script to download the repo DAG of CentOS 5.5 to my PC. I already did with OS, Update, and Extras packages. I want to do with DAG repository. I tried but I don't know much about scripts. Thanks Fidel Hello Fidel, This should help you out: http://dag.wieers.com/rpm/FAQ.php#B1 W. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos look up how to build a centos mirror and simply sub in the dag repo. NO scripting involved. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Download the repo DAG of CentOS 5.5
ok, could you help me to do that? On Sun, 2011-04-03 at 21:36 +0300, Eero Volotinen wrote: 2011/4/3 Fidel Dominguez-Valero fdval...@gmail.com: Yes, I know that, but I want to download for make a local repository just use reposync to mirror it to local repository. -- Eero ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] certification
2011/4/3 marco van der grient ma...@vandergrient.nl: Hi there, Is there any change of certification on CentOS 5+ in the nearby future? Thanks for your time, No, but RHCE and RHCSA works fine also on all rhel clones. -- Eero ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Download the repo DAG of CentOS 5.5
On 4/3/2011 2:33 PM, Fidel Dominguez-Valero wrote: Yes, I know that, but I want to download for make a local repository My apologies, Fidel. I didn't pick up on that when I read your post. Install yum-utils, which will provide reposync. Of course install the rpmforge repo RPM. For an initial download: # reposync -g -r rpmforge -p /local/destination/directory The man page is pretty straightforward, you should be able to whip up a cron job to keep the local repo up to date. W. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Download the repo DAG of CentOS 5.5
At Sun, 03 Apr 2011 14:12:55 -0400 CentOS mailing list centos@centos.org wrote: hello somebody might help to create a script to download the repo DAG of CentOS 5.5 to my PC. I already did with OS, Update, and Extras packages. I want to do with DAG repository. I tried but I don't know much about scripts. Thanks Fidel I use a thumb drive to 'mirror' the centos, epel, and rpmforge repos: mkdirs.sh: #!/bin/bash there=`dirname $0` here=`pwd` cd $there there=`pwd` cd $here rootdir=`dirname $there` mkdir -vp $rootdir/adobe/linux/i386/ mkdir -vp $rootdir/centos/5/addons/x86_64/ mkdir -vp $rootdir/centos/5/addons/i386 mkdir -vp $rootdir/centos/5/centosplus/x86_64/ mkdir -vp $rootdir/centos/5/centosplus/i386 mkdir -vp $rootdir/centos/5/contrib/x86_64/ mkdir -vp $rootdir/centos/5/contrib/i386 mkdir -vp $rootdir/centos/5/extras/x86_64/ mkdir -vp $rootdir/centos/5/extras/i386 mkdir -vp $rootdir/centos/5/os/x86_64/ mkdir -vp $rootdir/centos/5/os/i386 mkdir -vp $rootdir/centos/5/updates/x86_64/ mkdir -vp $rootdir/centos/5/updates/i386 mkdir -vp $rootdir/epel/5/x86_64/ mkdir -vp $rootdir/epel/5/i386/ mkdir -vp $rootdir/rpmforge/el5/x86_64/ mkdir -vp $rootdir/rpmforge/el5/i386/ centos.sh: #!/bin/bash there=`dirname $0` here=`pwd` cd $there there=`pwd` cd $here rootdir=`dirname $there` export RSYNCSERVER=rsync://mirror.clarkson.edu/centos export RSYNCCMD=rsync -avP --delete $RSYNCCMD $RSYNCSERVER/5/addons/x86_64/ $rootdir/centos/5/addons/x86_64/ #$RSYNCCMD $RSYNCSERVER/5/addons/i386/ $rootdir/centos/5/addons/i386/ $RSYNCCMD $RSYNCSERVER/5/centosplus/x86_64/ $rootdir/centos/5/centosplus/x86_64/ #$RSYNCCMD $RSYNCSERVER/5/centosplus/i386/ $rootdir/centos/5/centosplus/i386/ $RSYNCCMD $RSYNCSERVER/5/contrib/x86_64/ $rootdir/centos/5/contrib/x86_64/ #$RSYNCCMD $RSYNCSERVER/5/contrib/i386/ $rootdir/centos/5/contrib/i386/ $RSYNCCMD $RSYNCSERVER/5/extras/x86_64/ $rootdir/centos/5/extras/x86_64/ #$RSYNCCMD $RSYNCSERVER/5/extras/i386/ $rootdir/centos/5/extras/i386/ #$RSYNCCMD $RSYNCSERVER/5/os/x86_64/ $rootdir/centos/5/os/x86_64/ #$RSYNCCMD $RSYNCSERVER/5/os/i386/ $rootdir/centos/5/os/i386/ $RSYNCCMD $RSYNCSERVER/5/updates/x86_64/ $rootdir/centos/5/updates/x86_64/ #$RSYNCCMD $RSYNCSERVER/5/updates/i386/ $rootdir/centos/5/updates/i386/ epel.sh: #!/bin/bash there=`dirname $0` here=`pwd` cd $there there=`pwd` cd $here rootdir=`dirname $there` export RSYNCSERVER=rsync://mirrors.servercentral.net/fedora-epel export RSYNCCMD=rsync -avP --delete $RSYNCCMD --exclude=/debug/ $RSYNCSERVER/5/x86_64/ $rootdir/epel/5/x86_64/ rpmforge.sh: #!/bin/bash there=`dirname $0` here=`pwd` cd $there there=`pwd` cd $here rootdir=`dirname $there` export RSYNCSERVER=rsync://apt.sw.be/pub/freshrpms/pub/dag/redhat/ export RSYNCCMD=rsync -avP --delete $RSYNCCMD $RSYNCSERVER/el5/en/x86_64/rpmforge/ $rootdir/rpmforge/el5/x86_64/ #$RSYNCCMD $RSYNCSERVER/el5/en/i386/rpmforge/ $rootdir/rpmforge/el5/i386/ I use two 16G thumb drives, one for the i386 repos and one for the x86_64 repos. I don't bother with the base repo: when there is a point release, I download the DVD iso(s) and park them on my main machine, mount them loopback, and nfs export them. I use thumb drives for the various updates, because that lets me go somewhere with high-speed internet and update them. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- Robert Heller -- 978-544-6933 / hel...@deepsoft.com Deepwoods Software-- http://www.deepsoft.com/ () ascii ribbon campaign -- against html e-mail /\ www.asciiribbon.org -- against proprietary attachments ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] figuring out LogVol details for mount
When you boot into rescue mode are you given the option to continue-mount or read-only-mount the system to /mnt/sysimage? You could try to view /mnt/sysimage/etc/fstab to find the partition types. Regards, W. Hello everyone, I was, of course, a numbnut for suggesting this. I don't normally LVM the / partition, so I didn't think of it. I'll try to, er, open my mind out of my environment for future helpful suggestions. Actually, the thread was an example of why I don't LVM /. I think it adds another layer I'd rather not have to deal with when things go casters up. But that is just My Way and it is not The Only Way. Not a knock on Neuby, since it wasn't installed by him. How goes the battle, by the way? W. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Download the repo DAG of CentOS 5.5
thanks, rpmforge.sh is really that I need On Sun, 2011-04-03 at 15:21 -0400, Robert Heller wrote: At Sun, 03 Apr 2011 14:12:55 -0400 CentOS mailing list centos@centos.org wrote: hello somebody might help to create a script to download the repo DAG of CentOS 5.5 to my PC. I already did with OS, Update, and Extras packages. I want to do with DAG repository. I tried but I don't know much about scripts. Thanks Fidel I use a thumb drive to 'mirror' the centos, epel, and rpmforge repos: mkdirs.sh: #!/bin/bash there=`dirname $0` here=`pwd` cd $there there=`pwd` cd $here rootdir=`dirname $there` mkdir -vp $rootdir/adobe/linux/i386/ mkdir -vp $rootdir/centos/5/addons/x86_64/ mkdir -vp $rootdir/centos/5/addons/i386 mkdir -vp $rootdir/centos/5/centosplus/x86_64/ mkdir -vp $rootdir/centos/5/centosplus/i386 mkdir -vp $rootdir/centos/5/contrib/x86_64/ mkdir -vp $rootdir/centos/5/contrib/i386 mkdir -vp $rootdir/centos/5/extras/x86_64/ mkdir -vp $rootdir/centos/5/extras/i386 mkdir -vp $rootdir/centos/5/os/x86_64/ mkdir -vp $rootdir/centos/5/os/i386 mkdir -vp $rootdir/centos/5/updates/x86_64/ mkdir -vp $rootdir/centos/5/updates/i386 mkdir -vp $rootdir/epel/5/x86_64/ mkdir -vp $rootdir/epel/5/i386/ mkdir -vp $rootdir/rpmforge/el5/x86_64/ mkdir -vp $rootdir/rpmforge/el5/i386/ centos.sh: #!/bin/bash there=`dirname $0` here=`pwd` cd $there there=`pwd` cd $here rootdir=`dirname $there` export RSYNCSERVER=rsync://mirror.clarkson.edu/centos export RSYNCCMD=rsync -avP --delete $RSYNCCMD $RSYNCSERVER/5/addons/x86_64/ $rootdir/centos/5/addons/x86_64/ #$RSYNCCMD $RSYNCSERVER/5/addons/i386/ $rootdir/centos/5/addons/i386/ $RSYNCCMD $RSYNCSERVER/5/centosplus/x86_64/ $rootdir/centos/5/centosplus/x86_64/ #$RSYNCCMD $RSYNCSERVER/5/centosplus/i386/ $rootdir/centos/5/centosplus/i386/ $RSYNCCMD $RSYNCSERVER/5/contrib/x86_64/ $rootdir/centos/5/contrib/x86_64/ #$RSYNCCMD $RSYNCSERVER/5/contrib/i386/ $rootdir/centos/5/contrib/i386/ $RSYNCCMD $RSYNCSERVER/5/extras/x86_64/ $rootdir/centos/5/extras/x86_64/ #$RSYNCCMD $RSYNCSERVER/5/extras/i386/ $rootdir/centos/5/extras/i386/ #$RSYNCCMD $RSYNCSERVER/5/os/x86_64/ $rootdir/centos/5/os/x86_64/ #$RSYNCCMD $RSYNCSERVER/5/os/i386/ $rootdir/centos/5/os/i386/ $RSYNCCMD $RSYNCSERVER/5/updates/x86_64/ $rootdir/centos/5/updates/x86_64/ #$RSYNCCMD $RSYNCSERVER/5/updates/i386/ $rootdir/centos/5/updates/i386/ epel.sh: #!/bin/bash there=`dirname $0` here=`pwd` cd $there there=`pwd` cd $here rootdir=`dirname $there` export RSYNCSERVER=rsync://mirrors.servercentral.net/fedora-epel export RSYNCCMD=rsync -avP --delete $RSYNCCMD --exclude=/debug/ $RSYNCSERVER/5/x86_64/ $rootdir/epel/5/x86_64/ rpmforge.sh: #!/bin/bash there=`dirname $0` here=`pwd` cd $there there=`pwd` cd $here rootdir=`dirname $there` export RSYNCSERVER=rsync://apt.sw.be/pub/freshrpms/pub/dag/redhat/ export RSYNCCMD=rsync -avP --delete $RSYNCCMD $RSYNCSERVER/el5/en/x86_64/rpmforge/ $rootdir/rpmforge/el5/x86_64/ #$RSYNCCMD $RSYNCSERVER/el5/en/i386/rpmforge/ $rootdir/rpmforge/el5/i386/ I use two 16G thumb drives, one for the i386 repos and one for the x86_64 repos. I don't bother with the base repo: when there is a point release, I download the DVD iso(s) and park them on my main machine, mount them loopback, and nfs export them. I use thumb drives for the various updates, because that lets me go somewhere with high-speed internet and update them. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Door not hitting me on my way out
On 04/01/2011 09:37 PM, Nico Kadel-Garcia wrote: Sorry, folks. I wish our release developers well, and hope that they can open up their processes to allow much needed community involvment. But I've hopped to Scientific Linux and find it much more usable due to their willingness to publish updates even without the entire new release bundled, and the much timelier updates from the upstream vendor. php53 and bind97 are directly available for their verison 5.x release, and their version 6.0 has now taken over my testing environments. This makes EPEL's version of drupal, and various Samba 4 testing accessible, and I don't have to waste my time on backports that will be replaced by a release that is further, and further, and further behind. Perhaps in the future the configuration of the build and patch environments can be opened up, or the patching going on for the package rebundling can be published in just the way people with RHEL would publish their kernel patches, rather than presenting merely the results. But such ideas have been rejected as unnecessary, and even the suggestion was rejected with hostility. I know very well how much work such projects take, and regret that I was unable to assist further. My tweaks and bundles will now be going over to Fedora and Scientific Linux, rather than here or in the developer's list. Big issue I saw with Scientific Linux was a lack of commitment to long term support matching what RedHat and Centos provide. My $.02 Steve Clark -- Stephen Clark *NetWolves* Sr. Software Engineer III Phone: 813-579-3200 Fax: 813-882-0209 Email: steve.cl...@netwolves.com http://www.netwolves.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] interview request for ppl who have Shockwave/.Firefox working
For a long time now I've wanted to be able to watch videos. I've done the try this! and try that! method and it hasn't worked well. So I'm wondering if anyone running CentOS 5.5 has Shockwave on Firefox working. Currently it works for me with short videos-- up to two or three minutes long. However, when Shockwave is enabled, CPU usage jumps to 99%, sometimes even 100%! If I disable it CPU usage goes down to 1 - 5%. (For those who speak load avg, I've seen highs of 6 and 8... as opposed to the no Shockwave-now of 0.14 to 0.45.) So with the CPU already buried just by having Shockwave is enabled, if a video lasts longer than four minutes, gaps in the video's continuity begin to appear, and by ten minutes in the video is locked up altogether. What's everyone else's experience with this? Does anyone have a setup where they can view a 1.5-hour video normally... and maybe even work in their editor alongside it at the same time? If so, would you be open to explaining what hardware and software etc. you've got so that this works so well? Thanks. -- Anything is easy if you know how to do it. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] interview request for ppl who have Shockwave/.Firefox working
On Sunday 03 April 2011 18:41, ken wrote: For a long time now I've wanted to be able to watch videos. I've done the try this! and try that! method and it hasn't worked well. So I'm wondering if anyone running CentOS 5.5 has Shockwave on Firefox working. Are you perhaps confusing Shockwave and Flash? Most videos on the Web are in Flash format. Simply install flash-plugin, available on RPMForge, http://rpmrepo.org/RPMforge Regards, -- Yves Bellefeuille y...@storm.ca La Esperanta Civito ne rifuzas anticipe la kunlaboron de erarintoj, se ili konscias pri sia eraro. -- Heroldo Komunikas, n-ro 473. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] cobbler installation of CentOS-5.5
Timothy Murphy wrote: you can dd the whole IMG to your stick, but its cleaner to collect such images and reference them in syslinux.cfg. To setup your stick to bootZZ #syslinux -s /dev/sda (unmounted USB disk) Thanks for the suggestion. But would that be simpler than transferring netinstall.iso to a USB stick? (I've always found the syslinux documentation bizarre, with its frequent references to floppies.) I tried following my own suggestion - transferring CentOS netinstall to a USB stick with liveusb-creator (on a Fedora-14 laptop). But to my surprise this failed with the error message ISO MD5 checksum verification failed However, md5sum seemed to find the ISO OK: = [tim@blanche Documents]$ md5sum -c md5sum.txt.asc ... CentOS-5.5-x86_64-netinstall.iso: OK = sha1sum also finds it OK. I tried downloading the ISO again, but the outcome was the same. The ISO is very short - just 10MB. But it looks OK when I loop-mount it. I wonder if anyone can cast light on this? -- Timothy Murphy e-mail: gayleard /at/ eircom.net tel: +353-86-2336090, +353-1-2842366 s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] FLISOL 2011
Hello dear friends Anyone know if in the U.S is going to organize the FLISOL? Especially in the state of Michigan. -- Fidel Dominguez-Valero Linux User: 433411 Website: http://www.valerofix.ryanhost.net ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Download the repo DAG of CentOS 5.5
On 4/04/2011 5:21 AM, Robert Heller wrote: rpmforge.sh: #!/bin/bash there=`dirname $0` here=`pwd` cd $there there=`pwd` cd $here rootdir=`dirname $there` export RSYNCSERVER=rsync://apt.sw.be/pub/freshrpms/pub/dag/redhat/ export RSYNCCMD=rsync -avP --delete $RSYNCCMD $RSYNCSERVER/el5/en/x86_64/rpmforge/ $rootdir/rpmforge/el5/x86_64/ #$RSYNCCMD $RSYNCSERVER/el5/en/i386/rpmforge/ $rootdir/rpmforge/el5/i386/ Just out of curiosity, how much hdd space is consumed to mirror rpmforge? I have a local CentOS mirror for my users that consumes ~18GB (or 19,124,934,894 bytes as of this - 4/4/2011 - morning to be precise) for os updates centosplus extras addons for both i386 and x86_64! Tia, ak. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] interview request for ppl who have Shockwave/.Firefox working
At Sun, 03 Apr 2011 18:41:35 -0400 CentOS mailing list centos@centos.org wrote: For a long time now I've wanted to be able to watch videos. I've done the try this! and try that! method and it hasn't worked well. So I'm wondering if anyone running CentOS 5.5 has Shockwave on Firefox working. Currently it works for me with short videos-- up to two or three minutes long. However, when Shockwave is enabled, CPU usage jumps to 99%, sometimes even 100%! If I disable it CPU usage goes down to 1 - 5%. (For those who speak load avg, I've seen highs of 6 and 8... as opposed to the no Shockwave-now of 0.14 to 0.45.) So with the CPU already buried just by having Shockwave is enabled, if a video lasts longer than four minutes, gaps in the video's continuity begin to appear, and by ten minutes in the video is locked up altogether. What's everyone else's experience with this? Does anyone have a setup where they can view a 1.5-hour video normally... and maybe even work in their editor alongside it at the same time? If so, would you be open to explaining what hardware and software etc. you've got so that this works so well? I am able to watch 1/2 hour TV shows with flash-plugin-10.2.152.27-release from Adobe's repo in Firefox (firefox-3.6.13-2.el5.centos), on my i686 IBM ThinkPad X31 laptop (which has 512Meg of memory and a 1700MHz, Pentium M processor), using CentOS 5.5. The CPU does get hot (the fan fires up sometimes). Oh, I use a *very* lightweight X11 setup: I don't use GNome or KDE or any sort of 'Desktop Manager' system at all. Just FVWM in MWM mode. Virtually NO 'eye candy' at all. My system boots to runlevel 3 and I fire up X11 from my login. I have made no attempt to watch longer videos with flash. I do watch 3-5 minute music videos all the time, but I use mplayer for those (even the FLV files I have downloaded from YouTube). Thanks. -- Robert Heller -- 978-544-6933 / hel...@deepsoft.com Deepwoods Software-- http://www.deepsoft.com/ () ascii ribbon campaign -- against html e-mail /\ www.asciiribbon.org -- against proprietary attachments ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] interview request for ppl who have Shockwave/.Firefox working
At Sun, 3 Apr 2011 20:06:51 -0400 CentOS mailing list centos@centos.org wrote: On Sunday 03 April 2011 18:41, ken wrote: For a long time now I've wanted to be able to watch videos. I've done the try this! and try that! method and it hasn't worked well. So I'm wondering if anyone running CentOS 5.5 has Shockwave on Firefox working. Are you perhaps confusing Shockwave and Flash? Most videos on the Web are in Flash format. Simply install flash-plugin, available on RPMForge, http://rpmrepo.org/RPMforge Or from Adobe's repo. Note: Adobe only has 32-bit flash player as their stable release, although the 64-bit version available as 'beta test', seems to be stable enough (works just fine on my 64-bit desktop). Regards, -- Robert Heller -- 978-544-6933 / hel...@deepsoft.com Deepwoods Software-- http://www.deepsoft.com/ () ascii ribbon campaign -- against html e-mail /\ www.asciiribbon.org -- against proprietary attachments ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Download the repo DAG of CentOS 5.5
On Mon, 2011-04-04 at 11:21 +1000, Anthony K wrote: On 4/04/2011 5:21 AM, Robert Heller wrote: rpmforge.sh: #!/bin/bash there=`dirname $0` here=`pwd` cd $there there=`pwd` cd $here rootdir=`dirname $there` export RSYNCSERVER=rsync://apt.sw.be/pub/freshrpms/pub/dag/redhat/ export RSYNCCMD=rsync -avP --delete $RSYNCCMD $RSYNCSERVER/el5/en/x86_64/rpmforge/ $rootdir/rpmforge/el5/x86_64/ #$RSYNCCMD $RSYNCSERVER/el5/en/i386/rpmforge/ $rootdir/rpmforge/el5/i386/ Just out of curiosity, how much hdd space is consumed to mirror rpmforge? I have a local CentOS mirror for my users that consumes ~18GB (or 19,124,934,894 bytes as of this - 4/4/2011 - morning to be precise) for os updates centosplus extras addons for both i386 and x86_64! fidel@xxx:~/Downloads/Centos/5.5$ du -h rpmforge/ 6.2Mrpmforge/i386/repodata 5.6Grpmforge/i386/RPMS 5.6Grpmforge/i386 6.0Mrpmforge/x86_64/repodata 5.2Grpmforge/x86_64/RPMS 5.2Grpmforge/x86_64 11G rpmforge/ Tia, ak. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] interview request for ppl who have Shockwave/.Firefox working
ken wrote: For a long time now I've wanted to be able to watch videos. I've done the try this! and try that! method and it hasn't worked well. So I'm wondering if anyone running CentOS 5.5 has Shockwave on Firefox working. Currently it works for me with short videos-- up to two or three minutes long. However, when Shockwave is enabled, CPU usage jumps to 99%, sometimes even 100%! If I disable it CPU usage goes down to 1 - 5%. (For those who speak load avg, I've seen highs of 6 and 8... as opposed to the no Shockwave-now of 0.14 to 0.45.) So with the CPU already buried just by having Shockwave is enabled, if a video lasts longer than four minutes, gaps in the video's continuity begin to appear, and by ten minutes in the video is locked up altogether. What's everyone else's experience with this? Does anyone have a setup where they can view a 1.5-hour video normally... and maybe even work in their editor alongside it at the same time? If so, would you be open to explaining what hardware and software etc. you've got so that this works so well? Thanks. Shockwave flash 10.1.r85 from adobe works okay on my CentOS 5.5 on kernel 2.6.18-194.32.1.el5.centos.plus with firefox 3.6.13 x86_64 version HTH attachment: rkampen.vcf___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Download the repo DAG of CentOS 5.5
On Mon, Apr 04, 2011 at 11:21:23AM +1000, Anthony K wrote: Just out of curiosity, how much hdd space is consumed to mirror rpmforge? I have a local CentOS mirror for my users that consumes ~18GB (or 19,124,934,894 bytes as of this - 4/4/2011 - morning to be precise) for os updates centosplus extras addons for both i386 and x86_64! My mirror of rpmforge, created with rsync --delete -rlptDzH rsync://apt.sw.be/pub/freshrpms/pub/dag/redhat/el5/en/i386/dag/ el5-i386 rsync --delete -rlptDzH rsync://apt.sw.be/pub/freshrpms/pub/dag/redhat/el5/en/x86_64/dag/ el5-x86_64 % du -hs el* 5.6Gel5-i386 5.2Gel5-x86_64 -- rgds Stephen ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Tips for motherboard with multiple PCI / PCI-e slots
Hi, I need to fit at least three NICs and I was looking for motherboard models that contain 3 or 4 CPI (or PCI-e) slots and works with CentOS. I had a problem in the past with some models that had a bug and did not work well with linux (ok with windows) so that's way I am asking this here. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] question on software raid
On 4/1/2011 11:32 AM, Jerry Geis wrote: Device /dev/sda 20 offline uncorrectable sectors my .02 i would replace the drive. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Tips for motherboard with multiple PCI / PCI-e slots
On Sun, 03 Apr 2011 22:25:24 -0400 robert mena wrote: I need to fit at least three NICs and I was looking for motherboard models that contain 3 or 4 CPI (or PCI-e) slots and works with CentOS. I have 3 ethernet cards in this machine (actually 2 cards plus the port that's built-in). description: Motherboard product: DP45SG vendor: Intel Corporation physical id: 1 version: AAE27733-405 -- MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com www.creekfm.com - FIFTY THOUSAND WATTS of POW WOW POWER! ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Is Centos 5.5 too old fro Google Chrome?
I tried to install Google Chrome and received the dependencies error. Is Centos too old for the new Chrome or is there an older Chrome version that is compatible? Todd -- Ariste Software Petaluma, CA 94952 http://www.aristesoftware.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Is Centos 5.5 too old fro Google Chrome?
On Mon, Apr 4, 2011 at 06:51, Todd Cary t...@aristesoftware.com wrote: I tried to install Google Chrome and received the dependencies error. Is Centos too old for the new Chrome or is there an older Chrome version that is compatible? You need CentOS 6 or Fedora 14 to run Google Chrome :-) ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] lvm and kickstart issues deploying CentOS5.5
Hi. I'm currently trying to configure a kickstart script to do auto installs. We split up the partitions so that we have control on the mount security like setting no execute on the tmp portions etc . I keep hitting the same error : Could not stat /dev/VolGroup00/LogVol_root --- No Such file or directory The device apparently does not exist; did you specify is correctly Even after doing a manual install to generate the file lvm configuration I'm getting the same results. I have also deleted the whole virtual machine and started from scratch. Any suggestions on how I can resolve this ? From ks.cfg bootloader --location=mbr --driveorder=sda clearpart --linux part /boot --size=101 --fstype ext3 part swap --size=2048 --asprimary part pv.22 --size=100 --grow volgroup VolGroup00 --pesize=32768 pv.22 logvol /var/log --fstype ext3 --name=LogVol_var_log --vgname=VolGroup00 --size=2048 logvol /home --fstype ext3 --name=LogVol_home --vgname=VolGroup00 --size=2048 logvol /var --fstype ext3 --name=LogVol_var --vgname=VolGroup00 --size=2048 logvol /usr --fstype ext3 --name=LogVol_usr --vgname=VolGroup00 --size=2048 logvol / --fstype ext3 --name=LogVol_root --vgname=VolGroup00 --size=2048 logvol /tmp --fstype ext3 --name=LogVol_tmp --vgname=VolGroup00 --size=2048 logvol /var/tmp --fstype ext3 --name=LogVol_var_tmp --vgname=VolGroup00 --size=2048 logvol /opt --fstype ext3 --name=LogVol_opt --vgname=VolGroup00 --size=2048 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
