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

Package: debian-installer
Severity: critical
Justification: causes serious data loss


I upgraded this morning by downloading the business card image and 
booting off it. I had / on an IDE disk, and /home on a raid1 device made 
up of two sata disks. On upgrade, it was my intention to let d-i 
partition the IDE disk, but hang on to /home. It appeared to do this. 
but reboot, I installed mdadm and attempted to assemble and mount 
/dev/md0. mdadm said that sdb was out of sync, and the kernel said that 
the device lacked superblocks. Testing with fsck -b showed that none of 
the backup superblocks was working.

D-I questions: I just pressed enter at the prompt, and set my keyboard 
and location to enGB. On reaching the disk stage, I asked it to set up 
hda as a LVM with / /home /tmp and /var on seperate paritions. On 
checking the result seemed to suggest no changes to /dev/sda or 
/dev/sdb. I have attached syslog and partman from /var/log/installer. 

If you have any questions, or I can help further, please ask. I'm psn on 
oftc. Any suggestions as to what I did wrong or how to recover would be 
really nice.



-- System Information: Debian Release: 4.0
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: i386 (i686)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.18-4-k7
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)

Attachment: partman.gz
Description: Binary data

Attachment: syslog.gz
Description: Binary data

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