[Bug 260160] zfs jailed: snapshots not accessible

From: <bugzilla-noreply_at_freebsd.org>
Date: Sun, 13 Feb 2022 01:26:52 UTC

--- Comment #2 from Jim Long <freebsd-bugzilla@umpquanet.com> ---
I can confirm numerous systems from 13.0-STABLE #0
stable/13-n245258-5b8039d5ed3e and later that do exhibit this bug.

Further, it is not necessary to set "jailed=on" .... none of my systems use
that.  My experience suggests that it is sufficient simply to have a jail
rooted at the mountpoint of a ZFS filesystem. Prior to 13.0-RELEASE the jail
had read-only access to the snapshots of its own filesystem, for purposes of
restoring single files vi "cp" or "rsync" or simply "diff".

@Urs, can you please test to confirm that you still observe the PR behavior
even when "jailed=off", and update with your finding?

Thank you!

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