Public bug reported: [Impact] Multiple disks in a system can end up having the same BY_PATH name, making the corresponding symlinks in /dev/disk/by-path non-unique. This can result in a user performing an operation on the wrong disk, possibly resulting in data loss.
[Test Case] $ ls -l /dev/disk/by-path/ total 0 lrwxrwxrwx 1 root root 9 Feb 13 12:26 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy0-lun-0 -> ../../sdb lrwxrwxrwx 1 root root 10 Feb 13 12:26 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy0-lun-0-part1 -> ../../sdb1 lrwxrwxrwx 1 root root 10 Feb 13 12:26 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy0-lun-0-part2 -> ../../sdb2 lrwxrwxrwx 1 root root 10 Feb 13 12:26 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy0-lun-0-part3 -> ../../sdc3 Notice that there is no symlink for /dev/sdc. [Fix] ffeafdd2bf0b2 scsi: libsas: Fix rphy phy_identifier for PHYs with end devices attached [Regression Risk] This may change the by-path symlinks for disks on the system. While the new name would be the correct one - users maybe relying on the incorrect version. This could result in an unbootable system, requiring manual intervention to repair. ** Affects: linux (Ubuntu) Importance: Undecided Assignee: dann frazier (dannf) Status: In Progress ** Affects: linux (Ubuntu Xenial) Importance: Undecided Assignee: dann frazier (dannf) Status: New ** Affects: linux (Ubuntu Bionic) Importance: Undecided Assignee: dann frazier (dannf) Status: In Progress ** Affects: linux (Ubuntu Cosmic) Importance: Undecided Assignee: dann frazier (dannf) Status: In Progress ** Affects: linux (Ubuntu Disco) Importance: Undecided Assignee: dann frazier (dannf) Status: In Progress ** Also affects: linux (Ubuntu Disco) Importance: Undecided Assignee: dann frazier (dannf) Status: New ** Also affects: linux (Ubuntu Bionic) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Xenial) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Cosmic) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Xenial) Assignee: (unassigned) => dann frazier (dannf) ** Changed in: linux (Ubuntu Bionic) Assignee: (unassigned) => dann frazier (dannf) ** Changed in: linux (Ubuntu Cosmic) Assignee: (unassigned) => dann frazier (dannf) ** Changed in: linux (Ubuntu Disco) Status: New => In Progress ** Changed in: linux (Ubuntu Cosmic) Status: New => In Progress ** Changed in: linux (Ubuntu Bionic) Status: New => In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1817784 Title: libsas disks can have non-unique by-path names To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1817784/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs