Show pageOld revisionsBacklinksBack to top This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong. ====== out of loopback devices ====== As a result of a power related issue our Xen server crashed. When it came back up it could not create its full complement of loop back devices.\\ I saw errors like: Error: Device 770 (vbd) could not be connected. Backend device not found dmesg, /dev, everything indicated all 32 of the loopback devices were there, but after I used 10, there were no more. ``losetup`` saved the day. With it I was able to see that many loopback devices were in use attached to Xens that were no longer running. I don't know how this situation occurred as it has never been an issue before, but I did: for node in `seq 0 31` do losetup /dev/loop$node done And found quite a few that could be deleted (with losetup -d /dev/loopXX ) and once I did that I was able to bring up the rest of the virtuals. Hope this helps someone else out there. -Greg