Difference between revisions of "RAID"

From Vague Hope Wiki
Jump to: navigation, search
(Create)
(Extra)
Line 60: Line 60:
  
 
=== Extra ===
 
=== Extra ===
 +
 +
Test email:
 +
  sudo mdadm --monitor --scan --test --oneshot
  
 
Set the mdadm configuration to send an Email on startup:
 
Set the mdadm configuration to send an Email on startup:

Revision as of 04:34, 12 June 2013

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'. 'nobootwait' is IMPORTANT.

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

Extra

Test email:

 sudo mdadm --monitor --scan --test --oneshot

Set the mdadm configuration to send an Email on startup:

 sudo vim /etc/default/mdadm

Add the --test parameter to the DAEMON_OPTIONS:

 DAEMON_OPTIONS="--syslog --test"

References