[Bug 270340] zpool import does not return

From: <bugzilla-noreply_at_freebsd.org>
Date: Sun, 19 Mar 2023 13:42:54 UTC

            Bug ID: 270340
           Summary: zpool import does not return
           Product: Base System
           Version: 13.2-RELEASE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: bin
          Assignee: bugs@FreeBSD.org
          Reporter: pmc@citylink.dinoex.sub.org

After some work done (including modification to the pools), "zpool import"
doesn't work anymore.
This problem does not appear during the initial boot, but it does appear no
matter if one just executes "zpool import" or try to actually import some pool.

"zpool import" spins up the disks, and then just hangs and waits forever.
Killing it then results in a "DE" state (blocked while exiting), and the
system cannot be rebooted anymore (needs pushbutton service).

OS version is 13.2-BETA2 065f7854521d, and I did not find significant ZFS
changes later than that.

Any suggestion what data I might collect on the running system with the hanging
zpool process if I manage to run into this again?

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