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ZFS 2.0.5 contains bugfixes for issues that hang ZFS threads and prevent send/receive from functioning (until the next reboot). Particularly (from the changelog): Do not hash unlinked inodes #9741 #11223 #11648 #12210 It was released on June 23, 2021 and we're eager to get this change on to our...

We've noticed that in recent versions of Proxmox, that /proc/swaps is wrong. It boils down to this inside the container: # free -m total used free shared buff/cache available Mem: 64738 118 64610 7 8 64619...

Overview We're seeing a new issue since in-place upgrading Proxmox 4.x to Proxmox 5.x. For 2 different LXC containers after 1-3 reboots, the shutdown will fail. This occurs if triggered inside the OS (shutdown -r now) or from the hypervisor using "pct shutdown XXX --forceStop 1". Once it...

Summary There are a number of posts about being unable to destroy datasets that ZFS reports as busy even when lsof, fuser and cat /proc/*/mounts show no references. I have traced this to nfsd kernel processes which are launched when the container starts but aren't cleaned up when the container...