Stumbled onto "resume from suspend to RAM not working properly with / on btrfs" on users@lists.fedoraproject where it was suggested to take it to 'kernel bugzilla' which is a separate issue #15.
That lead to me making the connection to this upstream linux-btrfs@ post and excerpt from Luis Chamberlain mcgrof@kernel.org
Indeed, but then again doing a a race against a filesystem in between suspend/resume can cause all sorts of issues today, so btrfs is not the only one with issue there. I had found issue with xfs as well [0]: [0] https://lwn.net/Articles/735382/ I addressed a topic on this particular issue at LSFFMM in 2018, and here are the notes from that session: https://lore.kernel.org/linux-fsdevel/20180426212243.GA27853@wotan.suse.de/ I will pick up this work again now, but it will take a bit of time.
We probably should encourage this testing during test day next week to see if this is a conditional (local configuration specific) issue or if it's more widespread and what to do about it.
@kparal @adamwill @josef
Wow, nice detective work from Lukas. We should definitely include suspend to ram and possibly also hibernation in test cases for the next btrfs test day. @sumantrom Can you please do that?
Or do you have something more specific in mind, @chrismurphy ?
Yeah the freezer stuff clearly needs a bit of work, not just for btrfs. I remember being in this talk at LSF, but I don't remember the outcome. We should definitely test this a bunch. Obviously my laptop has been suspend/resuming normally, but the more hardware the better. If it's a widespread enough problem we can devote some time to it, it'll help xfs too.
Metadata Update from @ngompa: - Issue tagged with: Kernel
Metadata Update from @ngompa: - Issue assigned to josef
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