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md/raid1: add error handling of read error from FailFast device 

Current handle_read_error() function calls fix_read_error()
only if md device is RW and rdev does not include FailFast flag.
It does not handle a read error from a RW device including
FailFast flag.

I am not sure it is intended. But I found that write IO error
sets rdev faulty. The md module should handle the read IO error and
write IO error equally. So I think read IO error should set rdev faulty.

Signed-off-by: Gioh Kim <gi-oh.kim@profitbricks.com>
Reviewed-by: Jack Wang <jinpu.wang@profitbricks.com>
Signed-off-by: Shaohua Li <shli@fb.com>
hifive-unleashed-5.1
Gioh Kim 2018-05-02 13:08:11 +02:00 committed by Shaohua Li
parent c42a0e2675
commit b33d10624f
1 changed files with 2 additions and 0 deletions
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2
drivers/md/raid1.c
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@ -2472,6 +2472,8 @@ static void handle_read_error(struct r1conf *conf, struct r1bio *r1_bio)
fix_read_error(conf, r1_bio->read_disk,
r1_bio->sector, r1_bio->sectors);
unfreeze_array(conf);
} else if (mddev->ro == 0 && test_bit(FailFast, &rdev->flags)) {
md_error(mddev, rdev);
} else {
r1_bio->bios[r1_bio->read_disk] = IO_BLOCKED;
}