A recent change to rbd prevented rbd devices from being unmapped when they were in use. However that change did not address a different, but related problem. It is possible for an open (the one that would bump the open count from 0 to 1) to begin after a request to remove the rbd device has decided it can proceed. To fix this, define a new "removing" flag to prevent opens from proceeding once ermoval of a device has begun. The first patch in this series defines a new flags field, and uses it for this as well as the "exists" flag for snapshot mappings. -Alex [PATCH 1/2] rbd: define flags field, use it for exists flag [PATCH 2/2] rbd: prevent open for image being removed -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
