The contents of the object will be the same as
when the snapshot was taken.
@param io the pool in which the object is stored
@param oid the name of the object to rollback
@param snapname which snapshot to rollback to
@returns 0 on success, negative error code on failure
Rollback an object to a pool snapshot
The contents of the object will be the same as when the snapshot was taken.
@param io the pool in which the object is stored @param oid the name of the object to rollback @param snapname which snapshot to rollback to @returns 0 on success, negative error code on failure