[Bug 127420] geom: panic: journal overflow on gmirrored gjournal

From: <bugzilla-noreply_at_freebsd.org>
Date: Sun, 11 Dec 2022 16:01:41 UTC

--- Comment #9 from ruben@verweg.com ---
Created attachment 238711
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=238711&action=edit
crashinfo dump of gmirror'ed gjournal panic

(In reply to Graham Perrin from comment #8)
Unfortunately, it does.

Inside a Freebsd 13.1 zfs VM I created 2 zvols of 5G each, gmirror'ed them and
then gjournalled the mirror. The same bonnie++ invocation was used, resulting
in the attached crashinfo.

The story nowadays is somewhat different though, for triage purposes: ZFS was
still experimental then and a lot of functionality once covered by
gmirror/gjournal etc is available with ZFS in a much more stable fashion.

It might be a question whether having these geom classes should be continued
instead of using ZFS.

If geom is still considered to be a first-class citizen the bug should probably
be explored...

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