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md/raid1: fix_read_error should act on all non-faulty devices. 

If a devices is being recovered it is not InSync and is not Faulty.

If a read error is experienced on that device, fix_read_error()
will be called, but it ignores non-InSync devices.  So it will
neither fix the error nor fail the device.

It is incorrect that fix_read_error() ignores non-InSync devices.
It should only ignore Faulty devices.  So fix it.

This became a bug when we allowed reading from a device that was being
recovered.  It is suitable for any subsequent -stable kernel.

Fixes: da8840a747
Cc: stable@vger.kernel.org (v3.5+)
Reported-by: Alexander Lyakas <alex.bolshoy@gmail.com>
Tested-by: Alexander Lyakas <alex.bolshoy@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown 2014-09-18 11:09:04 +10:00
parent 34e97f1701
commit b8cb6b4c12
1 changed files with 2 additions and 2 deletions
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4
drivers/md/raid1.c
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@ -2155,7 +2155,7 @@ static void fix_read_error(struct r1conf *conf, int read_disk,
d--;
rdev = conf->mirrors[d].rdev;
if (rdev &&
test_bit(In_sync, &rdev->flags))
!test_bit(Faulty, &rdev->flags))
r1_sync_page_io(rdev, sect, s,
conf->tmppage, WRITE);
}
@ -2167,7 +2167,7 @@ static void fix_read_error(struct r1conf *conf, int read_disk,
d--;
rdev = conf->mirrors[d].rdev;
if (rdev &&
test_bit(In_sync, &rdev->flags)) {
!test_bit(Faulty, &rdev->flags)) {
if (r1_sync_page_io(rdev, sect, s,
conf->tmppage, READ)) {
atomic_add(s, &rdev->corrected_errors);