sda1 + sdb1 are an mdadm RAID-1 mirror, containing an ext3 filesystem mounted as /boot
sda2 + sdb2 are an mdadm RAID-1 mirror, configured as a dm-crypt device, containing a swap partition
sda3 + sdb3 are an mdadm RAID-1 mirror, configured as an LVM Physical Volume, with a single Volume Group and Logical Volume, containing an ext3 filesystem mounted as /
I've put together the following test system:
two disks, sda and sdb
sda1 + sdb1 are an mdadm RAID-1 mirror, containing an ext3 filesystem mounted as /boot
sda2 + sdb2 are an mdadm RAID-1 mirror, configured as a dm-crypt device, containing a swap partition
sda3 + sdb3 are an mdadm RAID-1 mirror, configured as an LVM Physical Volume, with a single Volume Group and Logical Volume, containing an ext3 filesystem mounted as /
I cannot replicate this bug.