- #Test dpc 2.0.6 takes long time to install install
- #Test dpc 2.0.6 takes long time to install upgrade
- #Test dpc 2.0.6 takes long time to install series
I tried to install the upstream zfs-dkms package for 2.0 to see if I can bisect the issue on upstream versions but it breaks my boot for some weird systemd reason I cannot quite figure out as yet. I don't have a good quick/easy reproducer but just using my desktop for a day or two seems I am likely to hit the issue after a while.
Version: ~/src/zfs $ sudo modinfo /lib/modules/ 5.8.0-36- generic/ kernel/ zfs/zfs. Linux-image- 5.8.0-36- generic: ~/src/zfs $ sudo modinfo /lib/modules/ 5.8.0-29- generic/ kernel/ zfs/zfs. linux-image- 5.8.0-36- generic is now released on Hirsute with 0.8.4-1ubuntu16 and so now the out of the box kernel is also broken and I am regularly having problems with this. I removed zfs-dkms to go back to the kernel built version and it was working OK.
When the issue first hit, I had zfs-dkms installed, which was on 0.8.4-1ubuntu16 where as the kernel build had 0.8.4-1ubuntu11. This issue seems to have appeared somewhere between zfs-linux 0.8.4-1ubuntu11 (last known working version) and 0.8.4-1ubuntu16. ? dmu_object_ info_from_ dnode+0x84/ 0xb0 There were a few originating call stacks but the first one I hit was I will reinstall those zfs-dkms versions to verify that.
#Test dpc 2.0.6 takes long time to install upgrade
I was not experiencing the issue on 0.8.4-1ubuntu14 and fairly sure it was working on 0.8.4-1ubuntu15 but broken after upgrade to 0.8.4-1ubuntu16. I could only find one other google reference to this issue, with 2 other users reporting the same error but on 20.04 here:
#Test dpc 2.0.6 takes long time to install series
It would log a series of spl_panic dumps into kern.log that look like this:ĭec 2 12:36:42 optane kernel: VERIFY(0 = sa_handle_ get_from_ db(zfsvfs- >z_os, db, zp, SA_HDL_SHARED, &zp->z_sa_hdl)) failedĭec 2 12:36:42 optane kernel: PANIC at zfs_znode. It happened over multiple reboots and kernels every time, all my Chrome apps weren't working but for whatever reason nothing else seemed affected. Once I removed zfs-dkms only to revert to the kernel built-in version it immediately worked without changing anything, removing files, etc. while the issue was going on I could not list that directory either "ls" would just hang. ~/.cache/ google- chrome/ Default/ Cache and ~/.config/ Mattermost/ Cache. In all cases they seem (but I was unable to strace the processes so it was a bit hard ot confirm 100% but by deduction from /proc/PID/fd and the hanging ls) they seem hung trying to open files in their 'Cache' directory, e.g. For whatever reason multiple Chrome/Electron apps were affected, specifically Discord, Chrome and Mattermost. It was happening when using zfs-dkms 0.8.4-1ubuntu16 built with DKMS on the same kernel and also on 5.8.18-acso (a custom kernel). It does not happen with module version 0.8.4-1ubuntu11 built and included with 5.8.0-29-generic I have narrowed down a few important notes: Since today while running Ubuntu 21.04 Hirsute I started getting a ZFS panic in the kernel log which was also hanging Disk I/O for all Chrome/Electron Apps.
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