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author	Stefan Behrens <sbehrens@giantdisaster.de>
	Fri, 25 May 2012 14:06:08 +0000 (16:06 +0200)
committer	Josef Bacik <josef@redhat.com>
	Wed, 30 May 2012 14:23:39 +0000 (10:23 -0400)
commit	442a4f6308e694e0fa6025708bd5e4e424bbf51c
tree	e782db1bcbec25283048d77871e0bed7ad04567c	tree \| snapshot (tar.gz zip)
parent	d07eb9117050c9ed3f78296ebcc06128b52693be	commit \| diff

Btrfs: add device counters for detected IO and checksum errors

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.

Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>

fs/btrfs/disk-io.c		diff \| blob \| blame \| history
fs/btrfs/extent_io.c		diff \| blob \| blame \| history
fs/btrfs/ioctl.h		diff \| blob \| blame \| history
fs/btrfs/scrub.c		diff \| blob \| blame \| history
fs/btrfs/volumes.c		diff \| blob \| blame \| history
fs/btrfs/volumes.h		diff \| blob \| blame \| history

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