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Groups > linux.debian.kernel > #77712

Bug#778849: Support restoring initrd on shutdown and pivoting into it

Cross-posted to 2 groups.

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Hi Joseph.

The last paragraph of this e-mail is specifically addressed to you, but
most of this e-mail is addressed generally.

Also, apologies if this message is a bit rushed.  I have a few things to
do today.

> I have yet to investigate intrigeri's suggestions from 2017,

I was planning to try out intrigeri's solution on a VM but have not had
the chance to do this.

> however I would suggest that this is something that needs to be
> upgraded from wishlist in 2022, and here's the reason simply enough:
> 
> root@aki:~# nvme smart-log /dev/nvme0
> Smart Log for NVME device:nvme0 namespace-id:ffffffff
> [..]
> unsafe_shutdowns			: 106
> [..]
> num_err_log_entries			: 284
> [..]
> root@aki:~# nvme smart-log /dev/nvme1
> Smart Log for NVME device:nvme1 namespace-id:ffffffff
> [..]
> unsafe_shutdowns			: 121
> [..]
> num_err_log_entries			: 291
> [..]

I agree that this should be higher than wishlist for the above reason
plus Lukas's ZFS shutdown problem mentioned in the initial
description/submission of this bug.

This really should be fixed for Bookworm.

Awhile back, I did have a look around the fix.  From what I remembered,
intrigeri's solution used a systemd shutdown 'script' to check for
devmaps or whatever of LVMs, ZFS partitions, etc... and runs specific
commands to umount the partitions.

However, I think my memory may be bad because I "now" don't see evidence
of such umounts in intrigeri's solution!

I would like to try things out today but maybe too rushed.

Jo, have you been able to try out intrigeri's solution (in GENERAL as
opposed to his specific patch/fix, which is mentioned in this bug report
and may have bits missing)?  The reason I say this is because you would
have the exact recreation steps and be able to do it easily.  For me, it
would be a shot in the dark or awkward for me to recreate.  I would only
be able to check that root LVM on LUKS would not cause any untoward
problems.

Thanks,
Gervase.

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Thread

Bug#778849: Support restoring initrd on shutdown and pivoting into it Gervase <gervase@group.force9.co.uk> - 2022-12-24 15:30 +0100
  Bug#778849: Support restoring initrd on shutdown and pivoting into it Gervase <gervase@group.force9.co.uk> - 2023-01-10 23:50 +0100
  Bug#778849: Support restoring initrd on shutdown and pivoting into it Gervase <gervase@group.force9.co.uk> - 2023-01-11 01:30 +0100
    Bug#778849: Support restoring initrd on shutdown and pivoting into it Gervase <gervase@group.force9.co.uk> - 2023-03-19 03:30 +0100

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