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Bug#507653: installation report: partitioner shows warning: 'The kernel was unable to re-read the partition table on /dev/md0', ext3 format hangs

My setup: (sorry I'm new at this (Linux) so I'm typing this out manually)

sda -- 320GB SATA
sda1  512M  raid container bootable
sda2  99% of rest  raid container

sdb -- 320GB SATA
sdb1  512M  raid container bootable
sdb2  99% of rest  raid container

md0  RAID1   ext3 boot  sda1 sdb1
md1  RAID10  lvm container  sda2 sdb2

vg00 in md1
v00  8G swap
v01  12G xfs root
v02  40G xfs home
rest of space unused at the moment

At the point where the partitioner needs to format md0, I kept getting the warning "The kernel was unable to re-read the partition table on /dev/md0" and whether I chose back or continue, it would try to format with ext3 and hang. It's a 512MB volume, so it shouldn't take that long.

Thing is, I got this exact same setup to work earlier today, but I decided to start over after I messed up with grub2, trying to get a bootloader on sdb so the system can still boot if sda fails.

I found a solution: Do NOT select ext3 for md0. Choose xfs. Let it format, then go back and change it to ext3. It will format again, and should finish normally. I'm installing the rest of the system as I type this (on another pc).

Hope this helps.

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