** Description changed: We're using Q-Logic QLE2562 Fibre Channel adapters (qla2xxx driver) against a HPE 3PAR 7400c storage array in an OpenStack environment. The OpenStack 3PAR driver manages volume attachments from the array to the servers. There is 4 path multipath to every volume. As the LUNs are removed, sometimes udev does not remove all links, particularly in /run/udev/links and /dev/disk/by-path. The symptoms are multiple records in one by-path directory under /run/udev/links, broken links to no longer attached luns in dev/disk/by-path and links between wrong LUNs and scsi devices there. OpenStack relies on these links. When another volume is attached using a LUN that has these leftover links and it happens that it is the first of the 4 paths, OpenStack incorrectly identifies the volume and attaches the same volume to multiple instances, leading to data loss. What could be causing this behavior? + + Ubuntu version 14.04 + Linux version Ubuntu 4.4.0-47.68~14.04.1-generic 4.4.24 + udev 204-5ubuntu20.19
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1647067 Title: Dangling UDEV links after removing FC LUNs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1647067/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
