Parallel installation 10.3/11.0 using a software raid1

I tried to install 11.0 in parallel on my 10.3 system. The system layout
looks like this:

/dev/sda1 69M /boot
/dev/sda2 20G /
/dev/sda3 2G swap
/dev/sda4 443.6G md0
/dev/sdb1 20G /boot
/dev/sdb2 443.6G md0

/dev/md0 443.6G /home

The /home is on a raid1 and there is another 20 GB partition as the new /
for 11.0. Starting the setup, I get from the partitioner the right
information, but it show a RAID0 system without my 2 partition (sda4) for
md0. I would like to use my /home in both installations, but I’m not able
to change the RAID level.

How can I change this level without formatting /home or how could I tell
YAST the right RAID level?

Thank you for any idea and best regards

Harald

What does the 11.0 installer see regarding /dev/sda4 and /dev/sdb2. If both have type Linux RAID (hex FD I think), then what you have to do is use the Raid button to create an array containing those two partitions and assigned to /home with the right FS type, but do not format it.

PS: I don’t guarantee it, I’ve never tried to mix two distros using the same RAID, this just seems like the logical path, so backup /home first.

ken yap wrote:

> What does the 11.0 installer see regarding /dev/sda4 and /dev/sdb2.
/dev/sdb2 is seen as member of md0 RAID, but md0 is set to RAID0. sda4 is
shown but without RAID.

> If
> both have type Linux RAID (hex FD I think), then what you have to do is
> use the Raid button to create an array containing those two partitions
> and assigned to /home with the right FS type, but do not format it.
They are both of type Linux RAID, but if I remove the md0 and try to create
it new the new md? partition is marked for formating, that the point when I
stop for protecting my 10.3 /home.

>
> PS: I don’t guarantee it, I’ve never tried to mix two distros using the
> same RAID, this just seems like the logical path, so backup /home first.
Yes :wink: it’s already done but still I do not like the idea that I could not
install in parallel. Normally, without RAID I always switch between two /
partitions and keep one /home and it works perfect. I never update a
version I use the new installation path and have only to worry about old
stuff in my home directories.

Regards

Harald

Harald Schumacher wrote:

Sorry this information is wrong!
>
> /dev/sda1 69M /boot
> /dev/sda2 20G /
> /dev/sda3 2G swap
> /dev/sda4 443.6G md0
> /dev/sdb1 20G /boot
> /dev/sdb2 443.6G md0
>
> /dev/md0 443.6G /home

This is the correct layout:
/dev/sda1 69M /boot
/dev/sda2 20G /(root10.3)
/dev/sda3 2G swap
/dev/sda4 443.6G md0
/dev/sdb1 20G /(root11.0)
/dev/sdb2 443.6G md0

/dev/md0 443.6G /home

Installing version 11 without the RAID works fine and after the first boot
YaST recognized the RAID as RAID1 and I could mount my /home.

Thank you fro your help

Harald