[CentOS] Re: How to enable my RAID again
theo.band at xanadu-wireless.com
Mon Oct 8 05:40:47 UTC 2007
Scott Silva wrote:
> on 10/7/2007 2:41 PM Theo Band spake the following:
>> # mdadm -Q /dev/sda
>> /dev/sda: is not an md array
>> /dev/sda: No md super block found, not an md component.
>> # mdadm -Q /dev/sda1
>> /dev/sda1: is not an md array
>> /dev/sda1: No md super block found, not an md component.
>> # mdadm -Q /dev/sda2
>> /dev/sda2: is not an md array
>> So it looks like all info is lost. Can I create a new array with the
>> existing LVM partitions and the free partitions without destroying
>> any data?
> Your raid appears to be on /dev/sda3 /dev/sdb2 /dev/sdc2 /dev/sdd2
> Try mdadm --examine --brief --scan --config=partitions
> and see if it sees anything.
# mdadm --examine --brief --scan --config=partitions
Indeed these are the partitions that are now unused and used to be part
of the raid. Any idea what could have gone wrong when I migrated to from
FC3 to Centos?
I also changed the mobo of this machine and changed the CPU from single
to a dual core one. I assume support is in the kernel, so no special
actions should be needed to get this to work during boot up.
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