Re: What happened?

From	Dan Ritter <dsr@randomstring.org>
Newsgroups	linux.debian.user
Subject	Re: What happened?
Date	2022-04-17 13:30 +0200
Message-ID	<Edbgl-9kyX-17@gated-at.bofh.it> (permalink)
References	<EcZRT-9dON-3@gated-at.bofh.it> <Ed2Zr-9fCT-1@gated-at.bofh.it> <Ed3st-9g1V-1@gated-at.bofh.it> <Ed5DX-9hjs-1@gated-at.bofh.it>
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Stefan Monnier wrote: 
> > My guess is that the upgrade in question was carried out while the VM
> > was running, and when the upgrade tried to unload one or more relevant
> > kernel modules, the kernel refused to let that happen because the module
> > was in use.
> 
> Hmm... I can't remember ever seeing an upgrade remove kernel modules.
> When/why would that happen?

Doing this while running is odd. However --

ZFS is supplied via DKMS, which needs to have the proper version
of kernel headers installed to build it. There are configuration
choices which can be made so that:

- with kernel v1, headers v1 are installed and DKMS builds ZFS

- an apt upgrade occurs, installing kernel v2

- with kernel v2, headers v2 are not installed and DKMS cannot
build ZFS. After reboot, ZFS pools cannot be found.

In which case installing v2 of the headers will allow DKMS to
rebuild ZFS, and pools will either be automatically found or can
be found with 'zfs import'.

-dsr-

Thread

What happened? Dennis Wicks <wix@mgssub.com> - 2022-04-17 01:20 +0200
  Re: What happened? Nicholas Geovanis <nickgeovanis@gmail.com> - 2022-04-17 04:40 +0200
    Re: What happened? The Wanderer <wanderer@fastmail.fm> - 2022-04-17 05:10 +0200
      Re: What happened? Stefan Monnier <monnier@iro.umontreal.ca> - 2022-04-17 07:30 +0200
        Re: What happened? The Wanderer <wanderer@fastmail.fm> - 2022-04-17 13:30 +0200
        Re: What happened? Dan Ritter <dsr@randomstring.org> - 2022-04-17 13:30 +0200
          Re: What happened? Charles Curley <charlescurley@charlescurley.com> - 2022-04-17 23:30 +0200
            Re: What happened? Dan Ritter <dsr@randomstring.org> - 2022-04-18 01:50 +0200
  Solved (partially) Re: What happened? Dennis Wicks <wix@mgssub.com> - 2022-04-21 20:40 +0200
    Re: Solved (partially) Re: What happened? The Wanderer <wanderer@fastmail.fm> - 2022-04-22 00:20 +0200
      Re: Solved (partially) Re: What happened? Dennis Wicks <wix@mgssub.com> - 2022-04-23 04:50 +0200

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