[Bug 254682] quota enabled filesystem doesn't show enabled running mount command

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Wed Apr 14 22:21:44 UTC 2021


--- Comment #4 from commit-hook at FreeBSD.org ---
A commit in branch main references this bug:


commit 14d0cd7225e250015eb6d9c79a7eb4e944211b23
Author:     Kirk McKusick <mckusick at FreeBSD.org>
AuthorDate: 2021-04-14 22:22:12 +0000
Commit:     Kirk McKusick <mckusick at FreeBSD.org>
CommitDate: 2021-04-14 22:25:08 +0000

    Ensure that the mount command shows "with quotas" when quotas are enabled.

    When quotas are enabled with the quotaon(8) command, it sets the
    MNT_QUOTA flag in the mount structure mnt_flag field. The mount
    structure holds a cached copy of the filesystem statfs structure
    in mnt_stat that includes a copy of the mnt_flag field in
    mnt_stat.f_flags. The mnt_stat structure may not be updated for
    hours. Since the mount command requests mount details using the
    MNT_NOWAIT option, it gets the mount's mnt_stat statfs structure
    whose f_flags field does not yet show the MNT_QUOTA flag being set
    in mnt_flag.

    The fix is to have quotaon(8) set the MNT_QUOTA flag in both mnt_flag
    and in mnt_stat.f_flags so that it will be immediately visible to
    callers of statfs(2).

    Reported by:  Christos Chatzaras
    Tested by:    Christos Chatzaras
    PR:           254682
    MFC after:    3 days
    Sponsored by: Netflix

 sys/ufs/ufs/ufs_quota.c | 2 ++
 1 file changed, 2 insertions(+)

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