I managed to mount the root volume from the kernel 5 boot fail busybox
by explicitly adding the correct device=/dev/sdXY names to the btrfs
mount options. After this one time manual mount, kernel 5 seems to boot
fine now. Seems like the kernel 5 btrfs driver "fixed" whatever it had
trouble with.
C
Please test latest mainline kernel:
[1] https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.2-rc2/
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https://bugs.launchpad.net/bugs/1831020
Title:
BTRS Raid boot failure
To manage notifi
