Hello all,
I have an old raid0 with no superblocks.
I have just upgraded the machine with this raid and mdadm is incapable of
mounting it. Unfortunately raidtools will no longer compile*. So I am a
bit stuck as I would like to save the data on this raid0.
Can I create a new raid0 using mdadm ?
mdadm -C -n 2 -c 128 -l 0 /dev/md0 /dev/hde1 /dev/hdg1
or should I build a new raid0 and then upgrade that to a raid0 with
superblocks (how would I do that?)
Thanks for any pointers,
As there are no super-blocks mdadm is
giving very little information:
mdadm -E /dev/hde1
mdadm: No md superblock detected on /dev/hde1.
mdadm -E /dev/hdg1
mdadm: No md superblock detected on /dev/hdg1.
mdadm -As /dev/md0
mdadm: /dev/hde1 has no superblock - assembly aborted
the raidtab is clear:
# Sample raid-0 configuration
raiddev /dev/md0
raid-level 0 # it's not obvious but this *must* be
# right after raiddev
persistent-superblock 0 # set this to 1 if you want autostart,
# BUT SETTING TO 1 WILL DESTROY PREVIOUS
# CONTENTS if this is a RAID0 array created
# by older raidtools (0.40-0.51) or mdtools!
chunk-size 128
nr-raid-disks 2
nr-spare-disks 0
device /dev/hde1
raid-disk 0
device /dev/hdg1
raid-disk 1
--
Marco
* the raidtools compile error is some awfull stuff in a macro. There is a
bug report here: http://bugs.gentoo.org/show_bug.cgi?id=165917
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