Bug#655772: linux-image-3.1.0-1-686-pae: Aptitude upgrade of package version 3.1.6-1 -> 3.1.8-2 sent "dm_mod..." message error

[Vladimir 'φ-coder/phcoder' Serbinenko]

On 14.01.2012 04:53, Ben Hutchings wrote:
> On Sat, 2012-01-14 at 02:06 +0100, Stéphane Aulery wrote:
>> Package: linux-2.6
>> Version: 3.1.8-2
>> Severity: normal
>>
>> Dear Maintainer,
>>
>> When I have updated package linux-image-3.1.0-1-686-pae 3.1.6-1 to
>> 3.1.8-2, aptitude sent some error messages like this :
>>
>> dm_mod: Unknown symbol scsi_verify_blk_ioctl (err 0)
> [...]
>
> It looks like this is due to GRUB running os-prober.
>
> We do not bump the kernel ABI when adding symbols, because that is
> backward-compatible with modules built for the earlier version.  But
> loading new modules is liable to fail after an upgrade until the new
> kernel is running (i.e. until the next reboot.)  So long as os-prober
> relies on loading a bunch of modules, GRUB *must not* run os-prober in
> its kernel postinst hook.
That doesn't sound as a reasonable requirement. As I see this, such an 
install, overwriting older modules botches currently running kernel 
which can lead to other unexpected failures as well. I think it would be 
reasonable to have such updates versioned and have 3.1.X or 3.1.0-X as 
Linux version rather than 3.1.0
> Ben.
>
>
>
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-- 
Regards
Vladimir 'φ-coder/phcoder' Serbinenko