On Saturday 15 February 2003 05:45 pm, gikoreno wrote:
Hey everyone:
I would like to know if DiskDrake supports RAID0+1 or RAID1+0, and how I
can achieve these configurations using DiskDrake.
If that can't be done, what's the easiest way I can implement these, since
I know the kernel supports at least one of these methods.
I did check out the RAID Howto, and it's in Appendix C, but I am wondering
if there isn't another way of doing so that I can use while installing
Mandrake.
Thanks,
gikoreno
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No there is no support for RAID0+1 in diskdrake.
you can set up this way in /etc/raidtab
(I am assuming 4 drives for RAID10)
raiddev /dev/md0
raid-level 0
nr-raid-disks 2
nr-spare-disks 0
chunk-size 64k
persistent-superblock 1
device /dev/hde5
raid-disk 0
device /dev/hdf5
raid-disk 1
raiddev /dev/md1
raid-level 0
nr-raid-disks 2
nr-spare-disks 0
chunk-size 64k
persistent-superblock 1
device /dev/hdg5
raid-disk 0
device /dev/hdh5
raid-disk 1
radidev /dev/md2
raid-level 1
nr-raid-disks 2
nr-spare-disks 0
persistent-superblock 1
device /dev/md0
raid-disk 0
device /dev/md1
raid-disk 1
Now it is VITAL that you access md2 and NEVER access md0 or md1 directly.
you run
in this order
mkraid /dev/md0
mkraid /dev/md1
mkraid /dev/md2
The danger here is that md0 anfd md1 must be mounted but must NEVER be
accessed directly.
Sure and it is a RAID0+1 array, but the bastardized way of achieving it allows
independent writing to the objects that are supposed to be mirrored.
Civileme
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