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Bug#417407: debian-installer: d-i destroyed existing raid device

On Tue, Apr 03, 2007 at 12:25:17PM +0200, Frans Pop wrote:
> After the reboot I again installed mdadm. However, I could not reproduce 
> any problems during this: the RAID was not out of sync,

In that case, I would say that the test did not accurately model the
submitter's circumstances.

To increase the chances of getting an out-of-sync RAID at this point, could
you try copying a lot of files around in the vm, and *then* killing it in
the middle of that copy operation?  The RAID will after all only be
out-of-sync if there was a write operation in progress that was interrupted
before it was copied to both disks.

> My conclusion is that by itself the fact that os-prober mounts the 
> partitions that make up a RAID1 does not damage anything, even if they 
> were not unmounted cleanly before.

> The real question here seems to be: why were the partitions unclean before 
> the installation was started.

I tend to agree, but I would appreciate seeing results from this one last
test as described above before downgrading this bug...

Steve Langasek                   Give me a lever long enough and a Free OS
Debian Developer                   to set it on, and I can move the world.
vorlon@debian.org                                   http://www.debian.org/

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