block jobs: Improve error message for missing job ID
commit1562047c899ccecdf8af9645ce7fd35fcd2fdb31
authorKevin Wolf <kwolf@redhat.com>
Tue, 12 Jul 2016 16:15:49 +0000 (12 18:15 +0200)
committerKevin Wolf <kwolf@redhat.com>
Mon, 5 Sep 2016 17:06:48 +0000 (5 19:06 +0200)
treed3d6cfffd698faa8031318ba8af6574e1e6bcd18
parent1b7f01d966f97b7820f3cdd471461cf0799a93cc
block jobs: Improve error message for missing job ID

If a block job is started with a node name rather than a device name and
no explicit job ID is passed, it was reported that '' isn't a
well-formed ID. Which is correct, but we can make the message a little
bit nicer.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
blockjob.c