David Chinner wrote:
> FWIW, I'm on record stating that "sync" is not sufficient to quiesce an XFS
> filesystem for a suspend/resume to work safely and have argued that the only
> safe thing to do is freeze the filesystem before suspend and thaw it after
> resume.
Whilst testing a potential bug in another thread I accidentally found that
unmounting a filesystem that I'd just frozen would hang.
As the saying goes: "Well, duh!!"
I could eventually run an unfreeze but the mount was still hung. This lead to an
unclean shutdown.
OK, it may not be bright but it seems like this shouldn't happen; umount should
either unfreeze and work or fail ("Attempt to umount a frozen filesystem.") if
the fs is frozen.
Is this a kernel bug/misfeature or a (u)mount one?
Suggestions as to the best place to report it if not in the cc's?
David
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