From 474ef7ce832d471148f63a9d07f67fc5564834f1 Mon Sep 17 00:00:00 2001 From: Josh Durgin Date: Mon, 21 Nov 2011 17:13:54 -0800 Subject: [PATCH] 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 Reviewed-by: Alex Elder --- drivers/block/rbd.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index 730d0ce505e1..f171cebabda9 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -1725,7 +1725,12 @@ static int __rbd_refresh_header(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); -- 2.30.2