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| author | Goldwyn Rodrigues <rgoldwyn@suse.com> | 2014-06-07 08:53:00 +0200 |
|---|---|---|
| committer | Goldwyn Rodrigues <rgoldwyn@suse.com> | 2015-02-23 16:59:06 +0100 |
| commit | 1d7e3e96117a864fe2ab3d02a14e49855319fdde (patch) | |
| tree | a927598ca07e1efde4d2f9f60d5607aa9ce27de4 /drivers/md/md.c | |
| parent | metadata_update sends message to other nodes (diff) | |
| download | linux-1d7e3e96117a864fe2ab3d02a14e49855319fdde.tar.xz linux-1d7e3e96117a864fe2ab3d02a14e49855319fdde.zip | |
Reload superblock if METADATA_UPDATED is received
Re-reads the devices by invalidating the cache.
Since we don't write to faulty devices, this is detected using
events recorded in the devices. If it is old as compared to the mddev
mark it is faulty.
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Diffstat (limited to 'drivers/md/md.c')
| -rw-r--r-- | drivers/md/md.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 0052e433d8a6..3eb45dc0537f 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -8788,6 +8788,28 @@ err_wq: return ret; } +void md_reload_sb(struct mddev *mddev) +{ + struct md_rdev *rdev, *tmp; + + rdev_for_each_safe(rdev, tmp, mddev) { + rdev->sb_loaded = 0; + ClearPageUptodate(rdev->sb_page); + } + mddev->raid_disks = 0; + analyze_sbs(mddev); + rdev_for_each_safe(rdev, tmp, mddev) { + struct mdp_superblock_1 *sb = page_address(rdev->sb_page); + /* since we don't write to faulty devices, we figure out if the + * disk is faulty by comparing events + */ + if (mddev->events > sb->events) + set_bit(Faulty, &rdev->flags); + } + +} +EXPORT_SYMBOL(md_reload_sb); + #ifndef MODULE /* |