[SOLVED] fsck separate /usr fails during boot

[raindev]

[Moderator note: this thread was originally titled fsck check of /usr on a separate partition fails during boot, but per comment from the original poster, this title was too long to permit a SOLVED marker. I condensed the title to make room, and added the marker at the same time. -Hu]

My system boots successfully except for a failing /usr filesystem check. Even if that doesn't cause any immediate issues, I would like the partition's filesystem check to not be omitted.

I found this forum thread about the issue but it's from 2013 and has not real solution.

All of my partitions are inside of an LVM on LUKS container. I use initrafms built with genkernel.

Here's the error I get during the boot:

[raindev]

With some help from gentoo-user list I've got the issue solved.

Below is a short summary, see more details here.

The problem was that /usr partition is mounted by initramfs (e.g. genkernel) causing fsck run by the init system (OpenRC) to fail. The solution was to check root and /usr filesystems by an initramfs leaving rest of the filesystems to the init. I have switched from genkernel to Dracut for initramfs as it includes fsck. Than I set passno only for root and /usr to 1 in fstab leaving 2 for the rest of the filesystems and set fsck_passno=">1" in /etc/conf.d/fsck. This way OpenRC fsck will not run checks of / and /usr (already performed by Dracut) and will complete successfully.

Can't add [solved] to the title as it's of the maximum length already

[NeddySeagoon]

raindev,

I have /var and /usr mounted and checked by the initrd and listed in /etc/fstab as noauto, so that localmount does not try to mount (and fsck) them again.
The initrd does parse /etc/fstab to locate /var and /usr, just in case I move them.
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.

[raindev]

NeddySeagoon,

Thanks for your reply.
Indeed mounting / and /usr read-write by initramfs and then skipping them in the init with noauto (assuming OpenRC fsck service is not checking noauto filesystems) should work just as well.
Which initramfs do you use?

[NeddySeagoon]

raindev,

I hand roll my own.
initramfs_list
init
and feed that to the kernel gen_initramfs.sh which is free with the kernel.

The list of libraries is compiled with the help of lddtree. Busybox is static.

My initramfs is kernel agnostic, so its like firmware and the boot loader.
Install once when the system is new and never change it.
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.

[egberts]

Oh boy ....

This is still a problem for Gentoo 2022 installer with trying to have that /usr partition as a separate partition (as in https://packages.gentoo.org/useflags/split-usr USE) also in other multiple NON-ROOT partitions.

In my case, I have the following partitions:

[Hu]

USE=split-usr is not related to this thread. USE=split-usr is documented as being about not merging the contents of /bin and /usr/bin into one directory (and likewise for the other directories that occur in both / and /usr). This thread is about using distinct filesystems for / and /usr. Unsetting USE=split-usr is probably a bad idea for systems with a separate /usr filesystem.

[hujuice]

Hello everybody,
I'm using the solution proposed here (I have separate /usr, both / and /usr are in LVM) and it works.
Thank you for this: https://archives.gentoo.org/gentoo-user/message/0afb1bb1a90bd1898cf42ab66e83d98c

It works because dmesg produces the expected output..