Hi all!
I was wondering if it is possible to introduce RAID 1 (i.e. mirroring of
a spare partition to be precise) into a running system? Let's assume
there is a disk A with partitions A1 and A2. A1 carries a fully
functional Gentoo, A2 is a spare partition. Kernel is 2.6.12.5 with Raid
stuff enabled.
Now I'd like to add a disk B (identical to disk A), duplicate the
partition layout from A and start mirroring A2 to B2.
Now let's also assume that A2 and B2 are set to partition type fd and
that there's a matching /etc/raidtype like
# /boot (RAID 1)
raiddev /dev/md0
raid-level 1
nr-raid-disks 2
chunk-size 32
persistent-superblock 1
device A2
raid-disk 0
device B2
raid-disk 1
Question: may I run mkraid /dev/md0 on the fly now or will that somehow
destroy the partition table on the entire disk A ?
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Heinz Sporn
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