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authorNeilBrown <neilb@suse.de>2009-04-14 16:28:34 +1000
committerNeilBrown <neilb@suse.de>2009-04-14 16:28:34 +1000
commitacb180b0e335ad88acfed6c8a33e39c05b95dc49 (patch)
treefa980978bb66b178fd8c2f474194754139c0921d /drivers/md/bitmap.c
parent6d56e278444bc8323b1bcfcada126b8e4dbba0f4 (diff)
downloadlinux-stericsson-acb180b0e335ad88acfed6c8a33e39c05b95dc49.tar.gz
md: improve usefulness and accuracy of sysfs file md/sync_completed.
The sync_completed file reports how much of a resync (or recovery or reshape) has been completed. However due to the possibility of out-of-order completion of writes, it is not certain to be accurate. We have an internal value - mddev->curr_resync_completed - which is an accurate value (though it might not always be quite so uptodate). So: - make curr_resync_completed be uptodate a little more often, particularly when raid5 reshape updates status in the metadata - report curr_resync_completed in the sysfs file - allow poll/select to report all updates to md/sync_completed. This makes sync_completed completed usable by any external metadata handler that wants to record this status information in its metadata. Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'drivers/md/bitmap.c')
-rw-r--r--drivers/md/bitmap.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
index f8a9f7ab2cb8..e4510c976b34 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -1479,6 +1479,7 @@ void bitmap_cond_end_sync(struct bitmap *bitmap, sector_t sector)
s += blocks;
}
bitmap->last_end_sync = jiffies;
+ sysfs_notify(&bitmap->mddev->kobj, NULL, "sync_completed");
}
static void bitmap_set_memory_bits(struct bitmap *bitmap, sector_t offset, int needed)