From: Marc MERLIN <marc@merlins.org>
To: dsterba@suse.cz, Martin Steigerwald <martin@lichtvoll.de>,
Josef Bacik <josef@toxicpanda.com>,
linux-btrfs@vger.kernel.org, kernel-team@fb.com,
Roman Mamedov <rm@romanrm.net>
Subject: Re: [PATCH] btrfs: do not zero f_bavail if we have available space
Date: Thu, 20 Feb 2020 21:38:04 -0800 [thread overview]
Message-ID: <20200221053804.GA7869@merlins.org> (raw)
In-Reply-To: <20200220214649.GD26873@merlins.org>
On Thu, Feb 20, 2020 at 01:46:49PM -0800, Marc MERLIN wrote:
> Well, turns out this was a more serious bug than we thought.
> With dm-thin overcommit, it causes this:
> [1324107.675334] BTRFS info (device dm-13): forced readonly
> [1324107.692909] BTRFS warning (device dm-13): Skipping commit of aborted transaction.
> [1324107.717141] BTRFS: error (device dm-13) in cleanup_transaction:1828: errno=-5 IO failure
> [1324107.743298] BTRFS info (device dm-13): delayed_refs has NO entry
> [1324107.817671] device-mapper: thin: 252:9: switching pool to write mode
> [1324108.662095] BTRFS error (device dm-13): bad tree block start, want 9050645626880 have 0
> [1324108.694286] BTRFS error (device dm-13): bad tree block start, want 9050645626880 have 0
I had a closer look, and even with 5.4.20, my whole lv is full now:
LV Name thinpool2
Allocated pool data 99.99%
Allocated metadata 59.88%
Sure enough, that broken ubuntu one (that really only needs 4GB or so),
is now taking 60% of the mapped size (i.e. everything that was left)
LV Name ubuntu
Mapped size 60.26%
I'm now running this overnight, but any command on that filesystem, just
hangs for now:
gargamel:/mnt/btrfs_pool2/backup/ubuntu# fstrim -v .
Marc
--
"A mouse is a device used to point at the xterm you want to type in" - A.S.R.
Home page: http://marc.merlins.org/ | PGP 7F55D5F27AAF9D08
next prev parent reply other threads:[~2020-02-21 5:38 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-31 14:31 [PATCH] btrfs: do not zero f_bavail if we have available space Josef Bacik
2020-01-31 20:06 ` Martin Steigerwald
2020-02-01 1:00 ` Qu Wenruo
2020-02-02 17:52 ` David Sterba
[not found] ` <CAKhhfD7S=kcKLRURdNFZ8H4beS8=XjFvnOQXche7+SVOGFGC_w@mail.gmail.com>
2020-02-19 9:17 ` Martin Steigerwald
2020-02-19 13:43 ` Marc MERLIN
2020-02-19 14:31 ` David Sterba
2020-02-19 15:36 ` Marc MERLIN
2020-02-19 17:50 ` Roman Mamedov
2020-02-19 22:21 ` Martin Steigerwald
2020-02-20 21:46 ` Marc MERLIN
2020-02-21 5:38 ` Marc MERLIN [this message]
2020-02-21 5:45 ` Roman Mamedov
2020-02-21 23:07 ` btrfs filled up dm-thin and df%: shows 8.4TB of data used when I'm only using 10% of that Marc MERLIN
2020-02-21 23:17 ` How to roll back btrfs filesystem a few revisions? Marc MERLIN
2020-02-21 23:47 ` Josef Bacik
2020-02-22 0:08 ` Marc MERLIN
2020-02-22 0:36 ` Josef Bacik
2020-02-21 23:43 ` btrfs filled up dm-thin and df%: shows 8.4TB of data used when I'm only using 10% of that Josef Bacik
2020-02-22 0:01 ` Marc MERLIN
2020-02-22 0:43 ` Josef Bacik
2020-02-22 1:06 ` Marc MERLIN
2020-02-22 1:23 ` Marc MERLIN
2020-02-22 14:51 ` Marc MERLIN
2020-02-22 14:52 ` Josef Bacik
2020-02-22 15:24 ` Marc MERLIN
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=20200221053804.GA7869@merlins.org \
--to=marc@merlins.org \
--cc=dsterba@suse.cz \
--cc=josef@toxicpanda.com \
--cc=kernel-team@fb.com \
--cc=linux-btrfs@vger.kernel.org \
--cc=martin@lichtvoll.de \
--cc=rm@romanrm.net \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.