End_request I/o Error Dev Xvda Sector
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for PaaS.io, but was running into random issues where the root parition would encounter an error and freeze up. It normally happened just after it would finish booting and about 50% of the
End_request I/o Error Dev Sda Sector
time. A few times it happened after I already logged in, so was able end_request i o error dev sector to do basic read only operations. In dmesg, was able to see the following: [ 6.748868] blkfront: barrier: empty write xvda op blk_update_request i/o error ubuntu failed [ 6.748876] blkfront: xvda: barrier or flush: disabled [ 6.748890] end_request: I/O error, dev xvda, sector 6584768 [ 6.748908] end_request: I/O error, dev xvda, sector 6584768 [ 6.748943] Aborting journal on device xvda6-8. [ 6.767022]
Blk_update_request I/o Error Dev Sda Sector
EXT4-fs error (device xvda6): ext4_journal_start_sb:327: Detected aborted journal [ 6.767046] EXT4-fs (xvda6): Remounting filesystem read-only Or if you weren’t able to log in first, you might see this in the XenCenter console: After some Googling, was able to track a similar error down by someone else. The fix was to update the mount options for the root partition. Mine are now: noatime,nodiratime,errors=remount-ro,barrier=0 The key is the barrier=0. From some documentation, it is
Blk_update_request Io Error
an option to help increase the integrity of writes by ensuring everything is flushed to disk be committing to the journal. However sometimes in a virtualized environment that is difficult to guarantee. In my case, have disk->RAID->dom0->LVM->domU. Figure many other people will be diving into Precise this weekend, potentially running into this issue like me. Soon, will post some additional details about how to easily get a nice Precise template in XenServer 6. I’ve been getting my setup nicely tuned using a kickstart script for the base system and leveraging xenstore data to dynamically setup the IP and hostname on boot. Saturday, April 28, 2012 Please enable JavaScript to view the comments powered by Disqus. blog comments powered by Disqus ← Configuring MongoDB Replica Sets With Keepalived Deploying Ubuntu 12.04 on XenServer Made Easy → About This is the personal blog of Ken Robertson. I sling code at Apcera building the next generation PaaS. I work for startups. I enjoy Ruby and Go, sometimes reminisce about C#. DevOps, Chef, Sinatra, even RFCs. In my spare time, I like to build things. I like to experiment with different technologies to find how they best fit onto my utility belt. Social Github Twitter LinkedIn Facebook Search Search for: Recent Posts Dell XPS 13 9350 on
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Blk_update_request I/o Error Dev Sector
posting ads with us Ask Ubuntu Questions Tags Users Badges Unanswered Ask Question _ Ask Ubuntu is a question and answer blk_update_request i/o error dev fd0 sector 0 site for Ubuntu users and developers. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise http://invalidlogic.com/2012/04/28/ubuntu-precise-on-xenserver-disk-errors/ to the top Why do I get disk I/O errors booting the 3.2 kernel on a xen vps server? up vote 3 down vote favorite 2 I have a xen vps, which I just upgraded to the new LTS 12 Precise Pangolin. However, I see this error on booting: [ 12.848076] end_request: I/O error, dev xvda, sector 12841 [ 12.848093] end_request: I/O error, dev xvda, sector 12841 [ 12.848103] Buffer http://askubuntu.com/questions/126631/why-do-i-get-disk-i-o-errors-booting-the-3-2-kernel-on-a-xen-vps-server I/O error on device xvda1, logical block 1605 [ 12.848110] lost page write due to I/O error on xvda1 [ 12.848129] Aborting journal on device xvda1. Results in / being mounted read-only. Reboot: [ 3.087257] EXT3-fs (xvda1): warning: ext3_clear_journal_err: Marking fs in need of filesystem check. [ 3.087677] EXT3-fs (xvda1): recovery complete [ 3.088514] EXT3-fs (xvda1): mounted filesystem with ordered data mode Begin: Running /scripts/local-bottom ... done. done. Begin: Running /scripts/init-bottom ... done. fsck from util-linux 2.20.1 PRGMRDISK1 contains a file system with errors, check forced. Checking disk drives for errors. This may take several minutes. Press C to cancel all checks in progress PRGMRDISK1: ***** REBOOT LINUX ***** PRGMRDISK1: 371152/6001184 files (2.8% non-contiguous), 4727949/12000000 blocks mountall: fsck / [308] terminated with status 3 mountall: System must be rebooted: / [ 151.566949] Restarting system. Name ID Mem VCPUs State Time(s) shadowmint 236 2048 1 --p--- 0.0 Reboot -> back to 1. This is definitely an issue with the 3.2 kernel, because booting the 3.0.0 or 2.6.38 kernel series make this issue magically disappear. I'm certain this is some kind of weird xen thing, but no idea. Anyone? Anyhow, until this is resolve I strongly recommend against upgrading if you're running a xen server. 12.04 kernel xen sh
CommunityOracle User Group CommunityTopliners CommunityOTN Speaker BureauJava CommunityError: You don't have JavaScript enabled. This tool uses JavaScript and much of it will not work correctly without it enabled. Please turn JavaScript back on and reload this https://community.oracle.com/thread/3798053 page. Please enter a title. You can not post a blank message. Please type your message and try again. More discussions in Oracle VM Server for x86 All PlacesServer & Storage SystemsVirtualizationOracle VM Server for x86 This discussion is archived 2 Replies Latest reply on Oct 1, 2015 10:44 PM by 798463 EXT4 corruptions and I/O errors with o error sparse files 798463 Oct 1, 2015 2:39 PM Hello,we are testing Oracle VM 3.2.9 (on our HP blades, BL680c G5 the 3.3.3 is not stable so we decided to stay with RH EL 5 based Xen provided in 3.2).We have some Xen PVM guests configured with Oracle linux 6.6 and Oracle RDBMS 12.1.0.2 SE2 and we are making some o error dev I/O related tests.The database files are on plain ext4 filesystems.We are incurring in several I/O errors, likeOct 1 15:07:48 dbatest4 kernel: Buffer I/O error on device dm-1, logical block 3891138Oct 1 15:07:48 dbatest4 kernel: EXT4-fs warning (device dm-1): ext4_end_bio:313: I/O error writing to inode 921028 (offset 0 size 49152 starting block 3891127)Oct 1 15:07:48 dbatest4 kernel: end_request: I/O error, dev xvdb, sector 31131160Oct 1 15:07:48 dbatest4 kernel: Buffer I/O error on device dm-1, logical block 3891139andOct 1 15:36:29 dbatest4 kernel: EXT4-fs warning (device xvda2): ext4_end_bio:313: I/O error writing to inode 18171 (offset 637992960 size 4096 starting block 2494321)Oct 1 15:36:59 dbatest4 kernel: end_request: I/O error, dev xvda, sector 19954560Oct 1 15:36:59 dbatest4 kernel: Buffer I/O error on device xvda2, logical block 2365552Oct 1 15:36:59 dbatest4 kernel: EXT4-fs warning (device xvda2): ext4_end_bio:313: I/O error writing to inode 18171 (offset 637992960 size 4096 starting block 2494321)In a case, the fs was so corrupted that even a forced file system check (fsck -fy) was not able to fix the errors.The disks are configured as sparse file