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| author | NeilBrown | 2012-05-21 01:27:00 +0200 |
|---|---|---|
| committer | NeilBrown | 2012-05-21 01:27:00 +0200 |
| commit | c6563a8c38fde3c1c7fc925a10bde3ca20799301 (patch) | |
| tree | 3916ae8247149a9dcf39ee1ca262f97be39071eb /drivers/md/raid1.c | |
| parent | md: allow a reshape operation to be reversed. (diff) | |
| download | kernel-qcow2-linux-c6563a8c38fde3c1c7fc925a10bde3ca20799301.tar.gz kernel-qcow2-linux-c6563a8c38fde3c1c7fc925a10bde3ca20799301.tar.xz kernel-qcow2-linux-c6563a8c38fde3c1c7fc925a10bde3ca20799301.zip | |
md: add possibility to change data-offset for devices.
When reshaping we can avoid costly intermediate backup by
changing the 'start' address of the array on the device
(if there is enough room).
So as a first step, allow such a change to be requested
through sysfs, and recorded in v1.x metadata.
(As we didn't previous check that all 'pad' fields were zero,
we need a new FEATURE flag for this.
A (belatedly) check that all remaining 'pad' fields are
zero to avoid a repeat of this)
The new data offset must be requested separately for each device.
This allows each to have a different change in the data offset.
This is not likely to be used often but as data_offset can be
set per-device, new_data_offset should be too.
This patch also removes the 'acknowledged' arg to rdev_set_badblocks as
it is never used and never will be. At the same time we add a new
arg ('in_new') which is currently always zero but will be used more
soon.
When a reshape finishes we will need to update the data_offset
and rdev->sectors. So provide an exported function to do that.
Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'drivers/md/raid1.c')
| -rw-r--r-- | drivers/md/raid1.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 15dd59b84e94..71a7dc038a82 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -2024,7 +2024,7 @@ static void handle_sync_write_finished(struct r1conf *conf, struct r1bio *r1_bio continue; if (test_bit(BIO_UPTODATE, &bio->bi_flags) && test_bit(R1BIO_MadeGood, &r1_bio->state)) { - rdev_clear_badblocks(rdev, r1_bio->sector, s); + rdev_clear_badblocks(rdev, r1_bio->sector, s, 0); } if (!test_bit(BIO_UPTODATE, &bio->bi_flags) && test_bit(R1BIO_WriteError, &r1_bio->state)) { @@ -2044,7 +2044,7 @@ static void handle_write_finished(struct r1conf *conf, struct r1bio *r1_bio) struct md_rdev *rdev = conf->mirrors[m].rdev; rdev_clear_badblocks(rdev, r1_bio->sector, - r1_bio->sectors); + r1_bio->sectors, 0); rdev_dec_pending(rdev, conf->mddev); } else if (r1_bio->bios[m] != NULL) { /* This drive got a write error. We need to |