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
Similar to drive-backup, but this command uses a device id as target instead of creating/opening an image file. Also add blocker on target bs, since the target is also a named device now. Add check and report error for bs == target which became possible but is an illegal case with introduction of blockdev-backup. Signed-off-by: Fam Zheng <famz@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1418899027-8445-3-git-send-email-famz@redhat.com Signed-off-by: Max Reitz <mreitz@redhat.com>