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| author | Goldwyn Rodrigues <rgoldwyn@suse.de> | 2015-04-14 15:45:42 (GMT) |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2015-04-21 21:59:39 (GMT) |
| commit | 97f6cd39da227459cb46ed4088d37d5d8db51c50 (patch) | |
| tree | 129f07ab60f7f7fd4b6ac792bb29d40bcf938aa1 /drivers/md/bitmap.c | |
| parent | a6da4ef85cef0382244fc588c901e133a2ec5109 (diff) | |
| download | linux-97f6cd39da227459cb46ed4088d37d5d8db51c50.tar.xz | |
md-cluster: re-add capabilities
When "re-add" is writted to /sys/block/mdXX/md/dev-YYY/state,
the clustered md:
1. Sends RE_ADD message with the desc_nr. Nodes receiving the message
clear the Faulty bit in their respective rdev->flags.
2. The node initiating re-add, gathers the bitmaps of all nodes
and copies them into the local bitmap. It does not clear the bitmap
from which it is copying.
3. Initiating node schedules a md recovery to sync the devices.
Signed-off-by: Guoqing Jiang <gqjiang@suse.com>
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'drivers/md/bitmap.c')
| -rw-r--r-- | drivers/md/bitmap.c | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c index e98db04..2bc56e2 100644 --- a/drivers/md/bitmap.c +++ b/drivers/md/bitmap.c @@ -1851,7 +1851,7 @@ EXPORT_SYMBOL_GPL(bitmap_load); * to our bitmap */ int bitmap_copy_from_slot(struct mddev *mddev, int slot, - sector_t *low, sector_t *high) + sector_t *low, sector_t *high, bool clear_bits) { int rv = 0, i, j; sector_t block, lo = 0, hi = 0; @@ -1882,14 +1882,16 @@ int bitmap_copy_from_slot(struct mddev *mddev, int slot, } } - bitmap_update_sb(bitmap); - /* Setting this for the ev_page should be enough. - * And we do not require both write_all and PAGE_DIRT either - */ - for (i = 0; i < bitmap->storage.file_pages; i++) - set_page_attr(bitmap, i, BITMAP_PAGE_DIRTY); - bitmap_write_all(bitmap); - bitmap_unplug(bitmap); + if (clear_bits) { + bitmap_update_sb(bitmap); + /* Setting this for the ev_page should be enough. + * And we do not require both write_all and PAGE_DIRT either + */ + for (i = 0; i < bitmap->storage.file_pages; i++) + set_page_attr(bitmap, i, BITMAP_PAGE_DIRTY); + bitmap_write_all(bitmap); + bitmap_unplug(bitmap); + } *low = lo; *high = hi; err: |