LVM Issue

[Dmitrijs Ledkovs]

On 3 July 2013 03:25, Max Brustkern <max.brustkern at canonical.com> wrote:
> I had tried using partman-auto/disk initially, but the install was still
> stopping at partman-auto/select_disk.  I'm trying the new preseed now.  Any
> thoughts on how long one would expect the early_command to take?
>

Well, here running in a VM I get a complete iowait and 100% cpu on the
host. With a 16GB VM disk it's 3-4 minutes.
I wonder is something more clever can be done to avoid a complete dd.
Something like:
* iterate lvs, lvremove each one
* iterate vgs, vgremove each one
* iterate block devices, pvremove each one

As that's what's tripping the installer.

Regards,

Dmitrijs.


> Thanks,
> Max
>
>
> On Tue, Jul 2, 2013 at 11:20 PM, Dmitrijs Ledkovs
> <dmitrij.ledkov at ubuntu.com> wrote:
>>
>> On 27 June 2013 03:52, Max Brustkern <max.brustkern at canonical.com> wrote:
>> > I've run a few installs on the same machine.  The first install is from
>> > a
>> > desktop image, and proceeds normally.
>> >
>> > The second install is from a netboot image, and proceeds normally.
>> >
>> > The third install runs on the same machine with the same preseed as the
>> > second, but appears to get stuck in a loop.  I'm currently running a
>> > fourth
>> > install to verify the loop does not resolve itself, but previous testing
>> > has
>> > typically resulted in the install timing out before that process
>> > resolves.
>> >
>>
>> One shouldn't preseed
>> d-i partman-auto/select_disk
>> d-i partman-auto/automatically_partition boolean True
>>
>> As those are interactive dialogs which well, end-up in a loop.
>>
>> Instead of select_disk, one should preseed:
>> d-i partman-auto/disk
>>
>> Nonetheless, even with correct lvm preseeds, subsequent installs fail
>> with "No root filesystem specified" which is quite unfortunate, given
>> that interactive dialogs see partman-auto/automatically_partition_init
>> and can select some_device_lvm recipe there.
>>
>> It looks to me like another incarnation of the
>> https://bugs.launchpad.net/ubuntu/+source/partman-auto-lvm/+bug/154086
>>
>> As a crude workaround there is a very thorough way one can reinstall
>> same configuration lvm. See attached preseed file.....
>>
>> Regards,
>>
>> Dmitrijs.
>
>