From: Stefan Behrens <sbehrens@giantdisaster.de>
To: linux-btrfs@vger.kernel.org
Subject: [PATCH 0/3] Btrfs: add IO error device stats
Date: Fri, 9 Dec 2011 17:40:25 +0100 [thread overview]
Message-ID: <cover.1323448299.git.sbehrens@giantdisaster.de> (raw)
The goal is to detect when drives start to get an increased error rate,
when drives should be replaced soon. Therefore statistic counters are
added that count IO errors (read, write and flush). Additionally, the
software detected errors like checksum errors and corrupted blocks are
counted.
An ioctl interface is added to get the device statistic counters.
A second ioctl is added to atomically get and reset these counters.
The device statistics are written into the device tree with each
transaction commit. Only modified statistics are written.
When a filesystem is mounted, the device statistic for each involved
device are read from the device tree and used to initialize the
counters.
A patch for the btrfs-progs world will also be sent.
The patches are based on v3.1-161-gf4a8e65 (btrfs pull request from
12/1/2011).
Stefan Behrens (3):
Btrfs: add device counters for detected IO and checksum errors
Btrfs: add ioctl to get and reset the device stats
Btrfs: read device stats on mount, write modified ones during commit
fs/btrfs/ctree.h | 51 ++++++++
fs/btrfs/disk-io.c | 25 +++-
fs/btrfs/extent_io.c | 27 ++++-
fs/btrfs/ioctl.c | 26 ++++
fs/btrfs/ioctl.h | 27 ++++
fs/btrfs/print-tree.c | 3 +
fs/btrfs/scrub.c | 52 ++++++--
fs/btrfs/transaction.c | 4 +
fs/btrfs/volumes.c | 335 +++++++++++++++++++++++++++++++++++++++++++++++-
fs/btrfs/volumes.h | 43 ++++++
10 files changed, 575 insertions(+), 18 deletions(-)
--
1.7.3.4
next reply other threads:[~2011-12-09 16:40 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-09 16:40 Stefan Behrens [this message]
2011-12-09 16:40 ` [PATCH 1/3] Btrfs: add device counters for detected IO and checksum errors Stefan Behrens
2011-12-09 16:40 ` [PATCH 2/3] Btrfs: add ioctl to get and reset the device stats Stefan Behrens
2011-12-11 10:24 ` Goffredo Baroncelli
2011-12-12 13:34 ` Stefan Behrens
2011-12-21 16:05 ` [PATCH v2 0/3] Btrfs: add IO error " Stefan Behrens
2011-12-21 16:05 ` [PATCH v2 1/3] Btrfs: add device counters for detected IO and checksum errors Stefan Behrens
2011-12-21 16:05 ` [PATCH v2 2/3] Btrfs: add ioctl to get and reset the device stats Stefan Behrens
2011-12-21 16:05 ` [PATCH v2 3/3] Btrfs: read device stats on mount, write modified ones during commit Stefan Behrens
2011-12-09 16:40 ` [PATCH " Stefan Behrens
2011-12-11 10:18 ` [PATCH 0/3] Btrfs: add IO error device stats Goffredo Baroncelli
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