royger 28ea44dac8 xen-blkback: fix error path on failed attach ... The current error path in case of failure during attach/initialization is not correct and leaves blkback in a stuck state. This is due to blkback waiting for blkfront to switch to state XenbusStateClosed, but if blkfront never attached (because the guest is not even started) it cannot possibly make it to that state. Instead just wait for the frontend to be in a state different than XenbusStateConnected in order to proceed with the shutdown. Also, it is wrong to call xbb_detach directly because it destroys the lock which can still be used by xbb_frontend_changed. Sponsored by: Citrix Systems R&D		2016-06-03 11:39:35 +00:00
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blkback.c	xen-blkback: fix error path on failed attach	2016-06-03 11:39:35 +00:00