It is one device. We have 2 luns for 2 different ocfs2 filesystems mounted on all servers (6) in the cluster. It is presented via fiber channel from our SAN.
I think the issue is that if you run fstrim from all servers which are mounting the same ocfs2 filesystem at the same time, bad stuff happens. We are using multipth: WWPN-THINGEE-HERE dm-3 TEGILE,INTELLIFLASH size=2.0T features='1 queue_if_no_path' hwhandler='1 alua' wp=rw |-+- policy='round-robin 0' prio=50 status=active | |- 0:0:0:16 sdb 8:16 active ready running | `- 1:0:0:16 sdf 8:80 active ready running `-+- policy='round-robin 0' prio=1 status=enabled |- 0:0:1:16 sdd 8:48 active ready running `- 1:0:1:16 sdh 8:112 active ready running WWPN-THINGEE-HERE dm-2 TEGILE,INTELLIFLASH size=2.0T features='1 queue_if_no_path' hwhandler='1 alua' wp=rw |-+- policy='round-robin 0' prio=50 status=active | |- 0:0:1:15 sdc 8:32 active ready running | `- 1:0:1:15 sdg 8:96 active ready running `-+- policy='round-robin 0' prio=1 status=enabled |- 0:0:0:15 sda 8:0 active ready running `- 1:0:0:15 sde 8:64 active ready running -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to util-linux in Ubuntu. https://bugs.launchpad.net/bugs/1681410 Title: fstrim corrupts ocfs2 filesystems when clustered Status in util-linux package in Ubuntu: Incomplete Bug description: Recently upgraded from trusty to xenial and found that our ocfs2 filesystems, which are mounted across a number of nodes simultaneously, would become corrupt on the weekend: [Sun Apr 9 06:46:35 2017] OCFS2: ERROR (device dm-2): ocfs2_validate_gd_self: Group descriptor #516096 has bad signature [Sun Apr 9 06:46:35 2017] On-disk corruption discovered. Please run fsck.ocfs2 once the filesystem is unmounted. [Sun Apr 9 06:46:35 2017] OCFS2: File system is now read-only. [Sun Apr 9 06:46:35 2017] (fstrim,1080,8):ocfs2_trim_fs:7399 ERROR: status = -30 [Sun Apr 9 06:46:35 2017] OCFS2: ERROR (device dm-3): ocfs2_validate_gd_self: Group descriptor #516096 has bad signature [Sun Apr 9 06:46:36 2017] On-disk corruption discovered. Please run fsck.ocfs2 once the filesystem is unmounted. [Sun Apr 9 06:46:36 2017] OCFS2: File system is now read-only. [Sun Apr 9 06:46:36 2017] (fstrim,1080,10):ocfs2_trim_fs:7399 ERROR: status = -30 We found the cron.weekly job which is pretty close to the timing: 47 6 * * 7 root test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.weekly ) # cat /etc/cron.weekly/fstrim #!/bin/sh # trim all mounted file systems which support it /sbin/fstrim --all || true We have disabled this job across our servers running clustered ocfs2 filesystems. I think either the utility or the cronjob should ignore ocfs2 (gfs too?) filesystems. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/util-linux/+bug/1681410/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
