[7859] in Release_7.7_team
Re: recovery hook to clean up /boot
daemon@ATHENA.MIT.EDU (Jonathan Reed)
Wed Dec 19 16:26:57 2012
Date: Wed, 19 Dec 2012 16:26:49 -0500 (EST)
From: Jonathan Reed <jdreed@MIT.EDU>
To: Geoffrey Thomas <geofft@MIT.EDU>
cc: release-team@MIT.EDU
In-Reply-To: <alpine.DEB.2.00.1212191317490.5325@team-rocket.mit.edu>
Message-ID: <alpine.DEB.2.02.1212191624060.25010@infinite-loop.mit.edu>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
The recovery hook is guaranteed to run. I... actually have no idea what
happens if apt-get attempts to upgrade the kernel package and /boot is
full. Hopefully unpacking fails cleanly? I also don't know what happens
if /boot is at 100% and grub is updated via the postinstall hook. It's
probably worth testing these before pushing this out. Because removing
the kernel will also trigger a grub reconfiguration, I'd hate for grub to
now end up trying to boot a nonexistent or broken kernel.
-Jon
On Wed, 19 Dec 2012, Geoffrey Thomas wrote:
> Looks reasonable. But do we need a recovery hook for this, or can we push
> this logic into the autoupdater and wait for its next run?
>
> --
> Geoffrey Thomas
> geofft@mit.edu
>
> On Tue, 18 Dec 2012, Jonathan Reed wrote:
>
>> We apaprently filled up /boot on a bunch of cluster workstations, and users
>> are helpfully getting notified about this. We need to clean it up.
>>
>> I propose the following recovery hook. (Cluster workstations should only
>> have linux-image-generic). I plan to push this out on the 26th unless
>> people object. (I'm not here on the 21st, and, uh, that's a bad day to
>> push out additional things)
>>
>> Silence will be interpreted as approval.
>>
>> #!/bin/bash
>>
>> kernels=$(dpkg-query -W -f '${Package}\n' linux-image-\*-generic | sed -e
>> 's/^linux-image-//' | sort -V)
>> numkernels=$(echo "$kernels" | wc -l)
>> if [ $numkernels -le 2 ]; then
>> exit 0
>> fi
>> toremove=$(echo "$kernels" | head -$(($numkernels-2)))
>> kpkgs=
>> for k in $toremove; do
>> if [ "$(uname -r)" != "$k" ]; then
>> kpkgs="$kpkgs linux-image-$k"
>> fi
>> done
>> if apt-get -s remove $kpkgs; then
>> apt-get remove $kpkgs
>> fi
>>
>>
>>
>
