This issue seems to have appeared somewhere between zfs-linux 0.8.4-1ubuntu11 (last known working version) and 0.8.4-1ubuntu16.
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. I removed zfs-dkms to go back to the kernel built version and it was working OK. 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. linux-image-5.8.0-29-generic: working linux-image-5.8.0-36-generic: broken ` lathiat@optane ~/src/zfs[zfs-2.0-release]$ sudo modinfo /lib/modules/5.8.0-29-generic/kernel/zfs/zfs.ko|grep version version: 0.8.4-1ubuntu11 lathiat@optane ~/src/zfs[zfs-2.0-release]$ sudo modinfo /lib/modules/5.8.0-36-generic/kernel/zfs/zfs.ko|grep version version: 0.8.4-1ubuntu16 ` 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. 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. Looking at the Ubuntu changelog I'd say the fix for https://bugs.launchpad.net/bugs/1899826 that landed in 0.8.4-1ubuntu13 to backport the 5.9 and 5.10 compataibility patches is a prime suspect but could also be any other version. I'm going to try and 'bisect' 0.8.4-1ubuntu11 through 0.8.4-1ubuntu16 to figure out which version actually hit it. Since the default kernel is now hitting this, there have been 2 more user reports of the same things in the upstream bug in the past few days since that kernel landed and I am regularly getting inaccessible files not just from chrome but even a linux git tree among other things I am going to raise the priority on this bug to Critical as you lose access to files so has data loss potential. I have not yet determined if you can somehow get the data back, so far it's only affected files I can replace such as cache/git files. It seems like snapshots might be OK (which would make sense). ** Changed in: zfs-linux (Ubuntu) Importance: High => Critical -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1906476 Title: PANIC at zfs_znode.c:335:zfs_znode_sa_init() // VERIFY(0 == sa_handle_get_from_db(zfsvfs->z_os, db, zp, SA_HDL_SHARED, &zp->z_sa_hdl)) failed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1906476/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
