Public bug reported: See attached dmesg outputs for booting kernels 4.11.x (working) and 4.13.x (not working).
dmesg-4.11.0-14-good.txt shows the dmesg output when booting kernel 4.11.x. btrfs scans for devices after all 4 (sda, sdb, sdc, sdd) of the devices have been discovered by the kernel. The btrfs RAID1 filesystem mounts, and everything is good. dmesg-4.13.0-36-fail.txt shows the dmesg output when booting kernel 4.13.x. btrfs scans for devices after only 2 (sda, sdb) of the devices have been discovered by the kernel. The btrfs RAID1 filesystem fails to mount ("failed to read the system array: -5"). The remaining 2 devices (sdc, sdd) are discovered by the kernel immediately afterward. At the end of the log, I run `btrfs device scan` and mount the filesystem manually. Hardware: HP ProLiant MicroServer Gen8 4x WDC WD20EFRX ** Affects: linux-hwe-edge (Ubuntu) Importance: Undecided Status: New ** Attachment added: "dmesg.zip" https://bugs.launchpad.net/bugs/1752961/+attachment/5067365/+files/dmesg.zip -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1752961 Title: With kernel 4.13 btrfs scans for devices before all devices have been discovered To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe-edge/+bug/1752961/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs