From: Hugo Mills <hugo@carfax.org.uk>
To: Chris Murphy <lists@colorremedies.com>
Cc: Btrfs BTRFS <linux-btrfs@vger.kernel.org>
Subject: Re: 6TB partition, Data only 2TB - aka When you haven't hit the "usual" problem
Date: Mon, 11 Jan 2016 22:10:56 +0000 [thread overview]
Message-ID: <20160111221056.GD422@carfax.org.uk> (raw)
In-Reply-To: <CAJCQCtSbiowwna1JmVdJ=+L-jrXawty9PA9oMMAMW-r8t-kKag@mail.gmail.com>
[-- Attachment #1: Type: text/plain, Size: 1631 bytes --]
On Mon, Jan 11, 2016 at 02:31:41PM -0700, Chris Murphy wrote:
> On Mon, Jan 11, 2016 at 2:03 AM, Hugo Mills <hugo@carfax.org.uk> wrote:
> > On Sun, Jan 10, 2016 at 05:13:28PM -0700, Chris Murphy wrote:
> >> On Sat, Jan 9, 2016 at 2:04 PM, Hugo Mills <hugo@carfax.org.uk> wrote:
> >> > On Sat, Jan 09, 2016 at 09:59:29PM +0100, cheater00 . wrote:
> >> >> OK. How do we track down that bug and get it fixed?
> >> >
> >> > I have no idea. I'm not a btrfs dev, I'm afraid.
> >> >
> >> > It's been around for a number of years. None of the devs has, I
> >> > think, had the time to look at it. When Josef was still (publicly)
> >> > active, he had it second on his list of bugs to look at for many
> >> > months -- but it always got trumped by some new bug that could cause
> >> > data loss.
> >>
> >>
> >> Interesting. I did not know of this bug. It's pretty rare.
> >
> > Not really. It shows up maybe on average once a week on IRC. It
> > gets reported much less on the mailing list.
>
> Is there a pattern? Does it only happen at a 2TiB threshold?
No, and no.
There is, as far as I can tell from some years of seeing reports of
this bug, no correlation with RAID level, hardware, OS, kernel
version, FS size, usage of the FS at failure, or allocation level of
either data or metadata at failure.
I haven't tried correlating with the phase of the moon or the
losses on Lloyds Register yet.
Hugo.
--
Hugo Mills | "What are we going to do tonight?"
hugo@... carfax.org.uk | "The same thing we do every night, Pinky. Try to
http://carfax.org.uk/ | take over the world!"
PGP: E2AB1DE4 |
[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 836 bytes --]
next prev parent reply other threads:[~2016-01-11 22:10 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-30 21:44 6TB partition, Data only 2TB - aka When you haven't hit the "usual" problem cheater00 .
2015-12-30 22:13 ` Chris Murphy
2016-01-02 2:09 ` cheater00 .
2016-01-02 2:10 ` cheater00 .
[not found] ` <CA+9GZUiWQ2tAotFuq2Svkjnk+2Quz5B8UwZSSpm4SJfhqfoStQ@mail.gmail.com>
2016-01-07 21:55 ` Chris Murphy
[not found] ` <CA+9GZUjLcRnRX_mwO-McXWFd+G4o3jtBENMLnszg-rJTn6vL1w@mail.gmail.com>
[not found] ` <CAJCQCtRhYZi9nqWP_LYmZeg1yRQVkpnmUDQ-P5o1-gc-3w+Pdg@mail.gmail.com>
2016-01-09 20:00 ` cheater00 .
2016-01-09 20:26 ` Hugo Mills
2016-01-09 20:59 ` cheater00 .
2016-01-09 21:04 ` Hugo Mills
2016-01-09 21:07 ` cheater00 .
2016-01-09 21:15 ` Hugo Mills
2016-01-10 3:59 ` cheater00 .
2016-01-10 6:16 ` Russell Coker
2016-01-10 22:24 ` cheater00 .
2016-01-10 22:32 ` Lionel Bouton
2016-01-11 13:05 ` Austin S. Hemmelgarn
2016-01-11 13:11 ` cheater00 .
2016-01-11 13:30 ` cheater00 .
2016-01-11 13:45 ` cheater00 .
2016-01-11 14:04 ` cheater00 .
2016-01-12 2:18 ` Duncan
2016-08-04 16:53 ` Lutz Vieweg
2016-08-04 20:30 ` Chris Murphy
2016-08-05 10:56 ` Lutz Vieweg
2016-08-05 12:12 ` Austin S. Hemmelgarn
2016-08-05 13:14 ` Lutz Vieweg
2016-08-05 20:03 ` Gabriel C
2016-08-25 15:48 ` Lutz Vieweg
2016-01-11 14:10 ` Austin S. Hemmelgarn
2016-01-11 16:02 ` cheater00 .
2016-01-11 16:33 ` cheater00 .
2016-01-11 20:29 ` Henk Slager
2016-01-12 1:16 ` Duncan
2016-01-11 0:13 ` Chris Murphy
2016-01-11 9:03 ` Hugo Mills
2016-01-11 13:04 ` cheater00 .
2016-01-11 21:31 ` Chris Murphy
2016-01-11 22:10 ` Hugo Mills [this message]
2016-01-11 22:20 ` Chris Murphy
2016-01-11 22:30 ` Hugo Mills
2016-01-11 22:39 ` Chris Murphy
2016-01-11 23:07 ` Hugo Mills
2016-01-11 23:12 ` cheater00 .
2016-01-11 23:05 ` cheater00 .
2016-01-12 2:05 ` Duncan
2016-01-11 22:57 ` cheater00 .
2016-01-10 14:14 ` Henk Slager
2016-01-10 23:47 ` cheater00 .
2016-01-11 0:24 ` Chris Murphy
2016-01-11 6:07 ` cheater00 .
2016-01-11 6:24 ` cheater00 .
2016-01-11 7:54 ` cheater00 .
2016-01-12 0:35 ` Duncan
2016-01-11 19:50 ` Henk Slager
2016-01-11 23:03 ` cheater00 .
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20160111221056.GD422@carfax.org.uk \
--to=hugo@carfax.org.uk \
--cc=linux-btrfs@vger.kernel.org \
--cc=lists@colorremedies.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).