Difference between revisions of "RAID"

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(→‎mdadm.conf)
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<pre>
 
<pre>
 
sudo -i
 
sudo -i
−
mdadm --detail --scan --verbose >> /etc/mdadm/mdadm.conf
+
mdadm --detail --scan >> /etc/mdadm/mdadm.conf
 
</pre>
 
</pre>
 +
Though the above does not quite work.  Make it look more like this: (remove name or get weird md127 issues)
 +
<pre>
 +
ARRAY /dev/md0 level=raid6 num-devices=4 metadata=1.2 UUID=659ec2c1:6631ccfd:08dbd99b:5bf050a3
 +
</pre>
 +
Remember: test by rebooting.
  
 
=== Format ===
 
=== Format ===

Revision as of 13:24, 24 October 2011

Set up

sudo aptitude install mdadm

Create

Set disc type

For each disc: 

sudo fdisk /dev/sdb

n          ; for a new partition
enter
p          ; for a primary partition
enter
1          ; number of partition
enter    ; accept the default
enter    ; accept the default
t          ; to change the type
fd        ; sets the type to be “Linux raid auto detect” (83h)
w         ; write changes to disk and exit

Create array

sudo mdadm --create --verbose /dev/md0 --level=6 --raid-devices=4 /dev/sdb1 /dev/sdc1 /dev/sdd1 /dev/sde1
sudo watch cat /proc/mdstat

mdadm.conf

sudo -i
mdadm --detail --scan >> /etc/mdadm/mdadm.conf

Though the above does not quite work. Make it look more like this: (remove name or get weird md127 issues) 

ARRAY /dev/md0 level=raid6 num-devices=4 metadata=1.2 UUID=659ec2c1:6631ccfd:08dbd99b:5bf050a3

Remember: test by rebooting.

Format

sudo mkfs.ext4 /dev/md0

Mount

Add to /etc/fstab: 

/dev/md0 /media/yama ext4 defaults,errors=remount-ro,nobootwait 0 2

References

Retrieved from ‘http://w.vaguehope.com/wiki/index.php?title=RAID&oldid=716’