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Re: Problems/workarounds for install to root on LVM on RAID



Josha Foust wrote:

A rather serious problem I encountered when running LVM on RAID is that as
of a few days ago, RAID wasn't automatically activated on startup.  This
caused LVM to find its partitions inside the RAID partition and mount one of
those.  This is obviously a horrible thing to do as it breaks your RAID
mirroring and thus you end up with a corrupt RAID device when you do bring
it up.  Although if you know what you are doing and what happened you could
probably recover from it.  The lvm lists say you need to put an exclusion in
the device section lvm config for the underlying partitions or drives that
make up the raid device.  There is suppose to be a patch floating around on
the lvm list to automatically skip partitions that have a partition type of
raid autodetect as the default behavior.

This seems to be working with the May 26th image, although I'll verify once I get a working system again (I'm currently wiping the disks so I can start from scratch and verify everything works from 'bare metal').

Are you sure you got the latest mkinitrd, and coerced it into not running LVM1? I think some of the LVM and mkinitrd stuff changed right around the 24th/25th time frame (based on trolling lvm d-i bugs).

<snip>

The raid device also shows it only being 2.0 GB in size when the partition
underneath it is 79GB.

If you're referring to the display in partman, I saw similar behavior, which I attributed to a 'wrapping' problem. My 150G raid partition was listed as some small number of MB on one line, and the correct size on another. I'll note details when I re-install.

This was all on the 20040524 build.

I used the May 25 & May 26 builds...not sure what (if anything) changed from the 24th.

--
Charles Steinkuehler
charles@steinkuehler.net



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