clr-boot-manager does not support btrfs subvolumes

[RobertBuhren]

Btrfs allows to specify subvolumes as a mount option. The systemd-fstab-generator allows to pass those to the mount command of the initrd using e.g.:

rootfstype=btrfs rootflags=subvol=clear

clearlinux boots from the correct subvolume but clr-boot-manager complains:

 sudo clr-boot-manager update
Password: 
[ERROR] cbm (../src/lib/system_stub.c:L31): Invalid block device: 0:46
Out of memory[FATAL] cbm (../src/bootman/sysconfig.c:L140): sysconfig insane: Missing root device
[ERROR] cbm (../src/bootman/update.c:L225): Failed to repair running kernel
[FATAL] cbm (../src/bootman/sysconfig.c:L140): sysconfig insane: Missing root device
[FATAL] cbm (../src/bootman/update.c:L257): Failed to install default-native kernel: ///usr/lib/kernel/org.clearlinux.native.5.0.17-765

[seanvk]

It's been an issue for a while...
clearlinux/clr-boot-manager#61

[bryteise]

Ugh I really have to get time to go through these cbm issues... btrfs subvolume support is going to need time though because it is low priority and the person who wrote the disk detection code isn't around any more. I'm closing this one in favor of the clr-boot-manager issue though.