Hello,
i recently installed Centos 5 on a new server with a single scsii
disk. After the installation, i added 2 additional disks that were
once the components of a raid0 array on another server.
I get some errors and am unable to start the array
the following is an extract from dmesg output:
md: Autodetecting RAID arrays.
md: could not open unknown-block(8,17).
md: could not open unknown-block(8,33).
i then examined each disk in fdisk
Device Boot Start End Blocks Id System
/dev/sdb1 1 17501 17921008 fd Linux raid autodetect
Device Boot Start End Blocks Id System
/dev/sdc1 1 17501 17921008 fd Linux raid autodetect
I tried to re-create the array and get this:
mdadm --create --verbose /dev/md0 --level=0 --raid-devices=2 /dev/sdb1
/dev/sdc1
mdadm: chunk size defaults to 64K
mdadm: Cannot open /dev/sdb1: No such device or address
mdadm: Cannot open /dev/sdc1: No such device or address
mdadm: create aborted
yet obviously the devices are there.
what else should i look at.
putting the drives back in the old server, and the array comes up with
all data intact.
Any ideas ?
thanks,
Michael
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