Hi, Over the past few weeks i have had a number of Windows VM Disk start showing up as corrupted. I Attempt to boot into recover mode and run the normal recover tools (chkdsk, sfc /scannow, etc.) Unable to repair with status 50. Looking through Ovirt, i do not see any thing in the logs. VM is Running off a gluster replica 3 volume. The corruption does not seem to be isolated to one specific gluster volume. I have also seen corruption with an NFS Volume. Issue seemed to start after moving from a Centos 7 Install, to a Ovirt Node image. I have mainly seen corruption with Windows 10 Images, but a couple of 2003/2012 server OS's as well. Where would be the best place to start looking at why the VM HD's are getting corrupted? Thank You, Bryan Sockel Systems Administrator o: 817-601-3222 ext: 233 e: bryan.sockel@mdaemon.com MDaemon Technologies Simple Secure Email Visit us on Facebook | LinkedIn | YouTube Sent using the MDaemon Messaging Server
Hi Bryan, i expect a hardware problem. Have all your servers ECC ram ? In the past I had a PC (without ECC RAM) and without ovirt, which regularly produced a defective data block when transferring an 8GB gzip file with rsync. The error position in file was randomly, but the defective stored block on disc has always only the first 128 bytes scrambled. You see, something like this can happen without any messages or anything like that. I didn't investigate further whether the cause was the network card, the RAM or the drive path or the switch port. But it was clearly reproducible! my 2 cent.
Am 20.07.2018 um 15:38 schrieb Bryan Sockel <Bryan.Sockel@mdaemon.com>:
Hi,
Over the past few weeks i have had a number of Windows VM Disk start showing up as corrupted. I Attempt to boot into recover mode and run the normal recover tools (chkdsk, sfc /scannow, etc.) Unable to repair with status 50.
Looking through Ovirt, i do not see any thing in the logs. VM is Running off a gluster replica 3 volume. The corruption does not seem to be isolated to one specific gluster volume. I have also seen corruption with an NFS Volume. Issue seemed to start after moving from a Centos 7 Install, to a Ovirt Node image.
I have mainly seen corruption with Windows 10 Images, but a couple of 2003/2012 server OS's as well.
Where would be the best place to start looking at why the VM HD's are getting corrupted?
Thank You,
Bryan Sockel Systems Administrator o: 817-601-3222 ext: 233 e: bryan.sockel@mdaemon.com
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Thanks Oliver, Here is more details on the configuration. Server is part of Gluster 3 Replica Arbiter 1 server. The two primary servers are both running DDR-4 Multi Bit ECC Memory Each Server is a Del Power Edge 630 running with 6x32 GB Memory Perc H730P with 2 GB on board cache. Raid 10 Array 8 Drives Read Ahead Write Through - 512K Stripe Arbiter server is nothing special, just a server i have laying around. Thank You, Bryan Sockel Systems Administrator o: 817-601-3222 ext: 233 e: bryan.sockel@mdaemon.com MDaemon Technologies Simple Secure Email Visit us on Facebook | LinkedIn | YouTube Sent using the MDaemon Messaging Server From: "Oliver Riesener (Oliver.Riesener@hs-bremen.de)" <Oliver.Riesener@hs-bremen.de> To: Bryan Sockel <Bryan.Sockel@mdaemon.com> Cc: "users@ovirt.org" <users@ovirt.org> Date: Fri, 20 Jul 2018 21:41:51 +0200 Subject: [ovirt-users] Re: Corrupted Disk Images Hi Bryan, i expect a hardware problem. Have all your servers ECC ram ? In the past I had a PC (without ECC RAM) and without ovirt, which regularly produced a defective data block when transferring an 8GB gzip file with rsync. The error position in file was randomly, but the defective stored block on disc has always only the first 128 bytes scrambled. You see, something like this can happen without any messages or anything like that. I didn't investigate further whether the cause was the network card, the RAM or the drive path or the switch port. But it was clearly reproducible! my 2 cent. Am 20.07.2018 um 15:38 schrieb Bryan Sockel <Bryan.Sockel@mdaemon.com>: Hi, Over the past few weeks i have had a number of Windows VM Disk start showing up as corrupted. I Attempt to boot into recover mode and run the normal recover tools (chkdsk, sfc /scannow, etc.) Unable to repair with status 50. Looking through Ovirt, i do not see any thing in the logs. VM is Running off a gluster replica 3 volume. The corruption does not seem to be isolated to one specific gluster volume. I have also seen corruption with an NFS Volume. Issue seemed to start after moving from a Centos 7 Install, to a Ovirt Node image. I have mainly seen corruption with Windows 10 Images, but a couple of 2003/2012 server OS's as well. Where would be the best place to start looking at why the VM HD's are getting corrupted? Thank You, Bryan Sockel Systems Administrator o: 817-601-3222 ext: 233 e: bryan.sockel@mdaemon.com MDaemon Technologies Simple Secure Email Visit us on Facebook | LinkedIn | YouTube Sent using the MDaemon Messaging Server _______________________________________________ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-leave@ovirt.org Privacy Statement: https://www.ovirt.org/site/privacy-policy/ oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/G7LZS7V2KHYCZH...
participants (2)
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Bryan Sockel -
Oliver Riesener