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authorJosh Durgin <josh.durgin@inktank.com>2011-11-21 17:13:54 -0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-01-17 08:51:18 -0800
commit7272b7d3db9160716acce4ae387cf98fd24ff820 (patch)
tree99cc7c5c8493cfdc0415039a69c48d2c051b846a /drivers/block/rbd.c
parent95268c46ace4492b924abf6e82c6974c152bee29 (diff)
rbd: only reset capacity when pointing to head
Snapshots cannot be resized, and the new capacity of head should not be reflected by the snapshot. Signed-off-by: Josh Durgin <josh.durgin@inktank.com> Reviewed-by: Alex Elder <elder@inktank.com> (cherry picked from commit 474ef7ce832d471148f63a9d07f67fc5564834f1) Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/block/rbd.c')
-rw-r--r--drivers/block/rbd.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 4f7ed7fa549..52a045b11d4 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -1721,7 +1721,12 @@ static int __rbd_update_snaps(struct rbd_device *rbd_dev)
return ret;
/* resized? */
- set_capacity(rbd_dev->disk, h.image_size / SECTOR_SIZE);
+ if (rbd_dev->snap_id == CEPH_NOSNAP) {
+ sector_t size = (sector_t) h.image_size / SECTOR_SIZE;
+
+ dout("setting size to %llu sectors", (unsigned long long) size);
+ set_capacity(rbd_dev->disk, size);
+ }
down_write(&rbd_dev->header_rwsem);