From: Sean Greenslade <sean@seangreenslade.com>
To: Btrfs BTRFS <linux-btrfs@vger.kernel.org>
Subject: Re: Is stability a joke? (wiki updated)
Date: Mon, 19 Sep 2016 11:27:42 -0400 [thread overview]
Message-ID: <20160919152742.GB1431@coach.home> (raw)
In-Reply-To: <20160919040855.GF21290@hungrycats.org>
On Mon, Sep 19, 2016 at 12:08:55AM -0400, Zygo Blaxell wrote:
> <snip>
> At the end of the day I'm not sure fsck really matters. If the filesystem
> is getting corrupted enough that both copies of metadata are broken,
> there's something fundamentally wrong with that setup (hardware bugs,
> software bugs, bad RAM, etc) and it's just going to keep slowly eating
> more data until the underlying problem is fixed, and there's no guarantee
> that a repair is going to restore data correctly. If we exclude broken
> hardware, the only thing btrfs check is going to repair is btrfs kernel
> bugs...and in that case, why would we expect btrfs check to have fewer
> bugs than the filesystem itself?
I see btrfs check as having a very useful role: fixing known problems
introduced by previous versions of kernel / progs. In my ext conversion
thread, I seem to have discovered a problem introduced by convert,
balance, or defrag. The data and metadata seem to be OK, however the
filesystem cannot be written to without btrfs falling over. If this was
caused by some edge-case data in the btrfs partition, it makes a lot
more sense to have btrfs check repair it than it does to modify the
kernel code to work around this and possibly many other bugs. The upshot
to this is that since (potentially all of) the data is intact, a
functional btrfs check would save me the hassle of restoring from
backup.
--Sean
next prev parent reply other threads:[~2016-09-19 15:27 UTC|newest]
Thread overview: 93+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-11 8:55 Is stability a joke? Waxhead
2016-09-11 9:56 ` Steven Haigh
2016-09-11 10:23 ` Martin Steigerwald
2016-09-11 11:21 ` Zoiled
2016-09-11 11:43 ` Martin Steigerwald
2016-09-11 12:05 ` Martin Steigerwald
2016-09-11 12:39 ` Waxhead
2016-09-11 13:02 ` Hugo Mills
2016-09-11 14:59 ` Martin Steigerwald
2016-09-11 20:14 ` Chris Murphy
2016-09-12 12:20 ` Austin S. Hemmelgarn
2016-09-12 12:59 ` Michel Bouissou
2016-09-12 13:14 ` Austin S. Hemmelgarn
2016-09-12 14:04 ` Lionel Bouton
2016-09-15 1:05 ` Nicholas D Steeves
2016-09-15 8:02 ` Martin Steigerwald
2016-09-16 7:13 ` Helmut Eller
2016-09-15 5:55 ` Kai Krakow
2016-09-15 8:05 ` Martin Steigerwald
2016-09-11 14:54 ` Martin Steigerwald
2016-09-11 15:19 ` Martin Steigerwald
2016-09-11 20:21 ` Chris Murphy
2016-09-11 17:46 ` Marc MERLIN
2016-09-20 16:33 ` Chris Murphy
2016-09-11 17:11 ` Duncan
2016-09-12 12:26 ` Austin S. Hemmelgarn
2016-09-11 12:30 ` Waxhead
2016-09-11 14:36 ` Martin Steigerwald
2016-09-12 12:48 ` Swâmi Petaramesh
2016-09-12 13:53 ` Chris Mason
2016-09-12 17:36 ` Zoiled
2016-09-12 17:44 ` Waxhead
2016-09-15 1:12 ` Nicholas D Steeves
2016-09-12 14:27 ` David Sterba
2016-09-12 14:54 ` Austin S. Hemmelgarn
2016-09-12 16:51 ` David Sterba
2016-09-12 17:31 ` Austin S. Hemmelgarn
2016-09-15 1:07 ` Nicholas D Steeves
2016-09-15 1:13 ` Steven Haigh
2016-09-15 2:14 ` stability matrix (was: Is stability a joke?) Christoph Anton Mitterer
2016-09-15 9:49 ` stability matrix Hans van Kranenburg
2016-09-15 11:54 ` Austin S. Hemmelgarn
2016-09-15 14:15 ` Chris Murphy
2016-09-15 14:56 ` Martin Steigerwald
2016-09-19 14:38 ` David Sterba
2016-09-19 15:27 ` stability matrix (was: Is stability a joke?) David Sterba
2016-09-19 17:18 ` stability matrix Austin S. Hemmelgarn
2016-09-19 19:52 ` Christoph Anton Mitterer
2016-09-19 20:07 ` Chris Mason
2016-09-19 20:36 ` Christoph Anton Mitterer
2016-09-19 21:03 ` Chris Mason
2016-09-19 19:45 ` stability matrix (was: Is stability a joke?) Christoph Anton Mitterer
2016-09-20 7:59 ` Duncan
2016-09-20 8:19 ` Hugo Mills
2016-09-20 8:34 ` David Sterba
2016-09-19 15:38 ` Is stability a joke? David Sterba
2016-09-19 21:25 ` Hans van Kranenburg
2016-09-12 16:27 ` Is stability a joke? (wiki updated) David Sterba
2016-09-12 16:56 ` Austin S. Hemmelgarn
2016-09-12 17:29 ` Filipe Manana
2016-09-12 17:42 ` Austin S. Hemmelgarn
2016-09-12 20:08 ` Chris Murphy
2016-09-13 11:35 ` Austin S. Hemmelgarn
2016-09-15 18:01 ` Chris Murphy
2016-09-15 18:20 ` Austin S. Hemmelgarn
2016-09-15 19:02 ` Chris Murphy
2016-09-15 20:16 ` Hugo Mills
2016-09-15 20:26 ` Chris Murphy
2016-09-16 12:00 ` Austin S. Hemmelgarn
2016-09-19 2:57 ` Zygo Blaxell
2016-09-19 12:37 ` Austin S. Hemmelgarn
2016-09-19 4:08 ` Zygo Blaxell
2016-09-19 15:27 ` Sean Greenslade [this message]
2016-09-19 17:38 ` Austin S. Hemmelgarn
2016-09-19 18:27 ` Chris Murphy
2016-09-19 18:34 ` Austin S. Hemmelgarn
2016-09-19 20:15 ` Zygo Blaxell
2016-09-20 12:09 ` Austin S. Hemmelgarn
2016-09-15 21:23 ` Christoph Anton Mitterer
2016-09-16 12:13 ` Austin S. Hemmelgarn
2016-09-19 3:47 ` Zygo Blaxell
2016-09-19 12:32 ` Austin S. Hemmelgarn
2016-09-19 15:33 ` Zygo Blaxell
2016-09-12 19:57 ` Martin Steigerwald
2016-09-12 20:21 ` Pasi Kärkkäinen
2016-09-12 20:35 ` Martin Steigerwald
2016-09-12 20:44 ` Chris Murphy
2016-09-13 11:28 ` Austin S. Hemmelgarn
2016-09-13 11:39 ` Martin Steigerwald
2016-09-14 5:53 ` Marc Haber
2016-09-12 20:48 ` Waxhead
2016-09-13 8:38 ` Timofey Titovets
2016-09-13 11:26 ` Austin S. Hemmelgarn
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