I have a raid5 array running on Debian Squeeze 32bit (x86) and I plan to upgrade to Debian Squeeze 64bit (amd64). To keep my raid5 array and ext4 filesystem I simply keep a copy of my mdadm.conf file. I am pretty confident this is enough to get my array up and running again once I am on 64bit, but I am still a bit nervous in case there is something I have forgotten (and shhhhh I know I am missing the backup!).
I plan to also upgrade the raid5 array to a raid6 array afterwards.
- Is there a problem migrating a raid5 created on a 32bit to 64bit system?
- Do I need more than mdadm.conf ?
- Is there anything else I need to know?