RAID1 with version 1.2 superblock in 64 Studio 3.0 beta 3

  • rac
Posted: Mon, 03/29/2010 - 05:21
I have recently created a new software RAID1 array on my machine using Ubuntu 10.04, but 64 Studio does not recognize it. I suspect this is because the new RAID1 array uses the version 1.2 superblock format. The machine already has two software RAID1 arrays using the version 0.9 superblock format, which both Ubuntu and 64 Studio recognize and start with no problem. Ubuntu has no problem with the new array but 64 Studio does not seem to see it at all. Running "mdadm --detail --scan" in 64 Studio shows the original two arrays but not the new one. Is it possible to get 64 Studio to recognize a RAID1 array that uses version 1.2 superblocks? My kernel version is: Linux 2.6.29-1-multimedia-amd64 #1 SMP PREEMPT RT Thu Feb 26 16:18:05 UTC 2009
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Never mind - figured it out!

  • rac
  • 06/22/09
  • Mon, 03/29/2010 - 05:57
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OK, I got it working. It seems that although "mdadm -Ds" didn't turn up the new array in 64 Studio, "mdadm -Es" did, giving this: ARRAY /dev/md0 level=raid1 num-devices=2 UUID=22ae6a2c:3e83592f:50ba6ed3:02cbbd17 ARRAY /dev/md1 level=raid1 num-devices=2 UUID=1dc0f693:61c7a00e:40235ec8:3f2859b1 ARRAY /dev/md/LinuxDataVol level=raid1 metadata=1.2 num-devices=2 UUID=a27fa202:c76780de:51069ca2:1411f618 name=:LinuxDataVol I just copied that last line into /etc/mdadm/mdadm.conf, changing the "/dev/md/LinuxDataVol" to "/dev/md2". I restarted and was able to discover the new partition's ID via "blkid" and add it to fstab in the usual way.