Sometimes after an upgrade or by using a shutdown command from terminal, I receive numerous messages at the next boot for example:
/dev/sdb1: Inode 655658 extent tree (at level 2) could be narrower. IGNORED.
I use rescue disc to boot to run e2fsck to compact the extent trees to erase messages and for good measure ran it across both drives:
e2fsck -fpDv -E bmap2extent /dev/sda1 e2fsck -fpDv -E bmap2extent /dev/sdb1
Can this command be made to run before drives are mounted on all partitions to automatically compact extent trees at boot time?