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authorAlex Elder <[email protected]>2013-05-06 17:40:33 -0500
committerAlex Elder <[email protected]>2013-05-13 14:12:41 -0500
commit70cf49cfc7a4d1eb4aeea6cd128b88230be9d0b1 (patch)
treeecc02aa809064607d872cf4c433cf0489b2f5604 /fs/jbd2/commit.c
parentb91f09f17b2a302f07022e2f766969e2536d71b3 (diff)
rbd: ignore zero-overlap parent
An rbd clone image that has an overlap with its parent of 0 is effectively not a layered image at all. Detect this case and treat such an image as non-layered. Issue a warning to be sure the user knows what's going on. This resolves: http://tracker.ceph.com/issues/5028 Signed-off-by: Alex Elder <[email protected]> Reviewed-by: Josh Durgin <[email protected]>
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