[Yaird-devel] Bug#351183: --run does not fix the disk renaming problem

[Jonas Smedegaard]

On Tue, 6 Jun 2006 14:13:01 -0400 Jason Lunz wrote:

> On Tue, Jun 06, 2006 at 08:53:45AM -0700, dean gaudet wrote:

> > this is why "-Ac partitions" will work...  Neil documented this in

Thanks alot for the reassuring details. I am convinced now!


> I can certainly live with an etch-only solution. yaird's not even in
> sarge.

I cannot: This is relevant, even for official Debian packaging of yaird
- see below!


> The downside of '-Ac partitions' is that if used in yaird, then
> backported, it'll crash the mdadm in sarge. That's a pretty minor
> problem, IMO. I've cc:ed Norbert Tretkowski so he'll be aware that
> future yaird backports might depend on an mdadm backport.

It is wrong to assume a purely no-older-than-etch system: Imagine the
process of upgrading from sarge to etch; for some reason yaird gets
installed first, pulled in by a kernel then installed and using yaird,
and only later in the the upgrade process mdadm upgraded. The initramfs
will then contain a too old mdadm :-(

Yaird packaged officially for Debian can be made to either require a
new enough mdadm or conflict with too old ones. but this is ugly, as
yaird does not really depend on mdadm, and a conflict would potentially
throw out mdadm properly working for non-rootfs.

A better approach would be for yaird to check at initramfs build time
if mdadm supports -Ac partitions.

Can someone come up with a test command that does not mess with actual
devices, and returns true for versions of mdadm that properly supports
"-Ac partitions"? Or even better, a complete patch for yaird?


 - Jonas

-- 
* Jonas Smedegaard - idealist og Internet-arkitekt
* Tlf.: +45 40843136  Website: http://dr.jones.dk/

 - Enden er nær: http://www.shibumi.org/eoti.htm
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