Re: [CentOS] Ext4 on CentOS 5.5 x64
-Original Message- From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of cpol...@surewest.net Sent: Friday, January 28, 2011 5:02 PM To: CentOS mailing list Subject: Re: [CentOS] Ext4 on CentOS 5.5 x64 Sorin Srbu wrote: snip Anyway, I get a bad block message when running fsck, and am not sure whether this is a interface problem between the chair and the monitor or something with the tech preview. snip Having just live through this issue, I recommend you run the extended (long) SMART test on all your drives and check the reports. The relevant package to install is smartmontools. It's worth investing a little time in setting up the package. I ended up with this incantation in /etc/smartd.conf : /dev/hda -T normal -p -a -o on -S on -s (S/../.././02|L/../../6/03) -m root@localhost To execute the extended tests (doesn't mess with your data): # smartctl --test=long /dev/hda To view the test results about 80 minutes later: # smartctl --log=selftest /dev/hda and so on. Good info, thanks! -- /Sorin smime.p7s Description: S/MIME cryptographic signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Ext4 on CentOS 5.5 x64
Hi, it works just fine for me, but there is no quota support in the 5.5 ext4 release Giuseppe Il 28/01/2011 08:51, Sorin Srbu ha scritto: -Original Message- From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of compdoc Sent: Thursday, January 27, 2011 5:09 PM To: 'CentOS mailing list' Subject: Re: [CentOS] Ext4 on CentOS 5.5 x64 For those of you that have been using the ext4 technology preview on CentOS 5.5, how has it panned out? Does it perform as expected? How do you feel the stability, creation of the FS and the administration of it is? Ideas and comments welcome. I've recently been using ext4 because I have servers with large(ish) storage volumes, and because I know that the next version of centos will support it better than 5.5. I only use it for storage, where I use rsync to copy terabytes of data to and from the servers. It works fine - it's been set and forget so far. Very fast read/write speeds. Same story here. I'm building a new backup server from scratch (with no old data on it), and while ext3 is nice and stable it's also pretty slow when we start talking sevenish terabytes. My main concern is all the writing on the interweb regarding running an fsck and a tune2fs after having formatted the filesystem to ext4; some say you should while some say it isn't necessary. Anyway, I get a bad block message when running fsck, and am not sure whether this is a interface problem between the chair and the monitor or something with the tech preview. ___ 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] Ext4 on CentOS 5.5 x64
Sorin Srbu wrote: snip Anyway, I get a bad block message when running fsck, and am not sure whether this is a interface problem between the chair and the monitor or something with the tech preview. snip Having just live through this issue, I recommend you run the extended (long) SMART test on all your drives and check the reports. The relevant package to install is smartmontools. It's worth investing a little time in setting up the package. I ended up with this incantation in /etc/smartd.conf : /dev/hda -T normal -p -a -o on -S on -s (S/../.././02|L/../../6/03) -m root@localhost To execute the extended tests (doesn't mess with your data): # smartctl --test=long /dev/hda To view the test results about 80 minutes later: # smartctl --log=selftest /dev/hda and so on. -- Charles Polisher ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Ext4 on CentOS 5.5 x64
On 1/28/2011 10:02 AM, cpol...@surewest.net wrote: Sorin Srbu wrote: snip Anyway, I get a bad block message when running fsck, and am not sure whether this is a interface problem between the chair and the monitor or something with the tech preview. snip Having just live through this issue, I recommend you run the extended (long) SMART test on all your drives and check the reports. The relevant package to install is smartmontools. It's worth investing a little time in setting up the package. I ended up with this incantation in /etc/smartd.conf : /dev/hda -T normal -p -a -o on -S on -s (S/../.././02|L/../../6/03) -m root@localhost To execute the extended tests (doesn't mess with your data): # smartctl --test=long /dev/hda To view the test results about 80 minutes later: # smartctl --log=selftest /dev/hda and so on. Are there guidelines about what are reasonable results or will the 'Smart Health Status' tell you enough after the tests run? -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Ext4 on CentOS 5.5 x64
Les Mikesell wrote: Are there guidelines about what are reasonable results or will the 'Smart Health Status' tell you enough after the tests run? In a recent study[1] of a large population of hard drives these assertions stood out: [A]fter their first scan error, drives are 39 times more likely to fail within 60 days than drives with no such errors. Drives with one or more reallocations do fail more of- ten than those with none. The average impact on AFR appears to be between a factor of 3-6x. After their first reallocation, drives are over 14 times more likely to fail within 60 days than drives without reallocation counts, making the critical threshold for this parameter also one. After the first offine reallocation, drives have over 21 times higher chances of failure within 60 days than drives without offine reallocations... The critical threshold for probational counts is also one: after the first event, drives are 16 times more likely to fail within 60 days than drives with zero probational counts. [1] Failure Trends in a Large Disk Drive Population Eduardo Pinheiro, Wolf-Dietrich Weber and Luiz A. Barroso Google Inc. -- Charles Polisher ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Ext4 on CentOS 5.5 x64
Hi all, For those of you that have been using the ext4 technology preview on CentOS 5.5, how has it panned out? Does it perform as expected? How do you feel the stability, creation of the FS and the administration of it is? Ideas and comments welcome. Thanks. -- BW, Sorin --- # Sorin Srbu[Sysadmin, Systems Engineer] # Dept of Medicinal Chemistry, Phone: +46 (0)18-4714482 3 signals GSM # Div of Org Pharm Chem,Mobile: +46 (0)701-718023 # Box 574, Uppsala University, Fax: +46 (0)18-4714482 # SE-751 23 Uppsala, Sweden Visit: BMC, Husargatan 3, D5:512b # Web: http://www.orgfarm.uu.se --- # () ASCII ribbon campaign - Against html E-mail # /\ # # MotD follows: # Legacy MS Tag: Windows has crashed more systems than Michelangelo. smime.p7s Description: S/MIME cryptographic signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Ext4 on CentOS 5.5 x64
On 27 January 2011 15:06, Sorin Srbu sorin.s...@orgfarm.uu.se wrote: Hi all, For those of you that have been using the ext4 technology preview on CentOS 5.5, how has it panned out? Does it perform as expected? How do you feel the stability, creation of the FS and the administration of it is? Ideas and comments welcome. Well for what it's worth it worked out well enough for Redhat that it is a fully supported filesystem in 5.6 and the default in 6.0... same admin tools as ext3 so not much to learn as it were... ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Ext4 on CentOS 5.5 x64
On Thu, Jan 27, 2011 at 5:37 PM, James Hogarth james.hoga...@gmail.com wrote: On 27 January 2011 15:06, Sorin Srbu sorin.s...@orgfarm.uu.se wrote: Hi all, For those of you that have been using the ext4 technology preview on CentOS 5.5, how has it panned out? Does it perform as expected? How do you feel the stability, creation of the FS and the administration of it is? Ideas and comments welcome. Well for what it's worth it worked out well enough for Redhat that it is a fully supported filesystem in 5.6 and the default in 6.0... same admin tools as ext3 so not much to learn as it were... ___ Is there an upgrade path, or do we need to reinstall completely ? -- Kind Regards Rudi Ahlers SoftDux Website: http://www.SoftDux.com Technical Blog: http://Blog.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Ext4 on CentOS 5.5 x64
For those of you that have been using the ext4 technology preview on CentOS 5.5, how has it panned out? Does it perform as expected? How do you feel the stability, creation of the FS and the administration of it is? Ideas and comments welcome. I've recently been using ext4 because I have servers with large(ish) storage volumes, and because I know that the next version of centos will support it better than 5.5. I only use it for storage, where I use rsync to copy terabytes of data to and from the servers. It works fine - it's been set and forget so far. Very fast read/write speeds. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Ext4 on CentOS 5.5 x64
Original Message Subject: Re: [CentOS] Ext4 on CentOS 5.5 x64 From: compdoc comp...@hotrodpc.com To: 'CentOS mailing list' centos@centos.org Date: Thursday, January 27, 2011 10:08:46 AM For those of you that have been using the ext4 technology preview on CentOS 5.5, how has it panned out? Does it perform as expected? How do you feel the stability, creation of the FS and the administration of it is? Ideas and comments welcome. I've recently been using ext4 because I have servers with large(ish) storage volumes, and because I know that the next version of centos will support it better than 5.5. I only use it for storage, where I use rsync to copy terabytes of data to and from the servers. It works fine - it's been set and forget so far. Very fast read/write speeds. I've been using it for the same purpose on a volume that is ~2.4TB, rsyncing a few 100's of GB/day. Works better than tape. No issues so far (maybe 6 months or so). ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Ext4 on CentOS 5.5 x64
On 01/27/2011 07:37 AM, James Hogarth wrote: On 27 January 2011 15:06, Sorin Srbusorin.s...@orgfarm.uu.se wrote: Hi all, For those of you that have been using the ext4 technology preview on CentOS 5.5, how has it panned out? Does it perform as expected? How do you feel the stability, creation of the FS and the administration of it is? Ideas and comments welcome. Well for what it's worth it worked out well enough for Redhat that it is a fully supported filesystem in 5.6 and the default in 6.0... same admin tools as ext3 so not much to learn as it were... However, be very, ah, *cautious* about trying any ext4 options beyond the RH defaults. I tried creating some with extents and other non-default options yesterday and it immediately triggered kernel panics when I tried to mount the resulting file systems. On the other side, I've been running default ext4 options on CentOS5 on some machines for years now with no hiccups at all. -- Benjamin Franz ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Ext4 on CentOS 5.5 x64
-Original Message- From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of compdoc Sent: Thursday, January 27, 2011 5:09 PM To: 'CentOS mailing list' Subject: Re: [CentOS] Ext4 on CentOS 5.5 x64 For those of you that have been using the ext4 technology preview on CentOS 5.5, how has it panned out? Does it perform as expected? How do you feel the stability, creation of the FS and the administration of it is? Ideas and comments welcome. I've recently been using ext4 because I have servers with large(ish) storage volumes, and because I know that the next version of centos will support it better than 5.5. I only use it for storage, where I use rsync to copy terabytes of data to and from the servers. It works fine - it's been set and forget so far. Very fast read/write speeds. Same story here. I'm building a new backup server from scratch (with no old data on it), and while ext3 is nice and stable it's also pretty slow when we start talking sevenish terabytes. My main concern is all the writing on the interweb regarding running an fsck and a tune2fs after having formatted the filesystem to ext4; some say you should while some say it isn't necessary. Anyway, I get a bad block message when running fsck, and am not sure whether this is a interface problem between the chair and the monitor or something with the tech preview. -- /Sorin smime.p7s Description: S/MIME cryptographic signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
