Hi Bill,

Bill Davidsen wrote:

Martin MOKREJŠ wrote:

quoted

Hi everybody,

That is what happened to me. Two disks are not in an ICH9R array but are
in raid0 under mdadm. Four disk are under raid10 under ICH9R while also
under raid10 under mdadm.
  

Could you clarify that last sentence? It sounds as if you have two
independent arrays, using a controller for one and mdraid for the other,
and they both use the same drives. Please tell me I'm misreading this...

No, you read it correctly. ICH9R controller has 6 disks connected. First two
do not have configured array "in BIOS" while latter 4 do have (RAID10). That
was my surprise as the machine uses md-array (the first two disks /dev/sd[a-b]1
in raid1, 0.9 superblock) while the latter four /dev/sd[c-f]1 as raid10 (0.9
superblock as well). In other words, the four disks in raid10 are assigned twice,
onder to ICH9R while also to md-raid10.

I think that once I configured the BIOS stuff but used subsequently mdadm to
create the array under linux. Thus I believe I overwrote the "imsm" superblock
without even knowing (but then ICH9R BIOS would not report the RAID10 spanning
the four disks nowadays, right?).

Thanks,
Martin

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