Data & Storage/Advanced Data & Storage
Prereqs to Setting Up the RAIDs
log into vmserver02
cd /xen/conf
vi vm08.cfg
add the following lines to the file:
'file:xen/domains/vm08/disk_1.img,xvda3,w',
'file:xen/domains/vm08/disk_2.img,xvda4,w',
'file:xen/domains/vmo8/disk_3.img,xvda5,w',
'file:xen/domains/vm08/disk_4.img,xvda6,w',
save and exit vi
modprobe md
modprobe linear
modprobe multipath
modprobe raid0
modprobe raid1
modprobe radi5
modprobe raid6
modprobe raid10
RAID 0
log into vm08
shutdown -h now
log into vmserver02
cd /xen/domains/vm08
dd if=/dev/zero of=disk_1.img bs=1M count=1024
dd if=/dev/zero of=disk_2.img bs=1M count=1024
cd /xen/conf
xm create -c vm08.cfg
log into vm08
mdadm --create /dev/md0 --level=0 --raid-disks=2 /dev/xvda3 /dev/xvda4
mkfs.ext3 /dev/md0
mount /dev/md0 /mnt
cat /proc/mdstat
RAID 1
log into vm08
shutdown -h now
log into vmserver02
cd /xen/domains/vm08
dd if=/dev/zero of=disk_1.img bs=1M count=1024
dd if=/dev/zero of=disk_2.img bs=1M count=1024
cd /xen/conf
xm create -c vm08.cfg
log into vm08
mdadm --create /dev/md0 --level=1 --raid-disks=2 /dev/xvda3 /dev/xvda4
mkfs.ext3 /dev/md0
mount /dev/md0 /mnt
cat /proc/mdstat
RAID 5
log into vm08
shutdown -h now
log into vmserver02
cd /xen/domains/vm08
dd if=/dev/zero of=disk_1.img bs=1M count=1024
dd if=/dev/zero of=disk_2.img bs=1M count=1024
dd if=/dev/zero of=disk_3.img bs=1M count=1024
cd /xen/conf
xm create -c vm08.cfg
log into vm08
mdadm --create /dev/md0 --level=5 --raid-disks=3 /dev/xvda3 /dev/xvda4
/dev/xvda5
mkfs.ext3 /dev/md0
mount /dev/md0 /mnt
cat /proc/mdstat
RAID 6
log into vm08
shutdown -h now
log into vmserver02
cd /xen/domains/vm08
dd if=/dev/zero of=disk_1.img bs=1M count=1024
dd if=/dev/zero of=disk_2.img bs=1M count=1024
dd if=/dev/zero of=disk_3.img bs=1M count=1024
dd if=/dev/zero of=disk_4.img bs=1M count=1024
cd /xen/conf
xm create -c vm08.cfg
log into vm08
mdadm --create /dev/md0 --level=6 --raid-disks=4 /dev/xvda3 /dev/xvda4
/dev/xvda5 /dev/xvda6
mkfs.ext3 /dev/md0
mount /dev/md0 /mnt
cat /proc/mdstat
RAID 10
log into vm08
shutdown -h now
log into vmserver02
cd /xen/domains/vm08
dd if=/dev/zero of=disk_1.img bs=1M count=1024
dd if=/dev/zero of=disk_2.img bs=1M count=1024
dd if=/dev/zero of=disk_3.img bs=1M count=1024
dd if=/dev/zero of=disk_4.img bs=1M count=1024
cd /xen/conf
xm create -c vm08.cfg
log into vm08
mdadm --create /dev/md0 --level=10 --raid-disks=4 /dev/xvda3 /dev/xvda4
/dev/xvda5 /dev/xvda6
mkfs.ext3 /dev/md0
mount /dev/md0 /mnt
cat /proc/mdstat
RAID 01
log into vm08
shutdown -h now
log into vmserver02
cd /xen/domains/vm08
dd if=/dev/zero of=disk_1.img bs=1M count=1024
dd if=/dev/zero of=disk_2.img bs=1M count=1024
dd if=/dev/zero of=disk_3.img bs=1M count=1024
dd if=/dev/zero of=disk_4.img bs=1M count=1024
cd /xen/conf
xm create -c vm08.cfg
log into vm08
mdadm --create /dev/md0 --level=0 --raid-disks=2 /dev/xvda3 /dev/xvda4
mdadm --create /dev/md1 --level=0 --raid-disks=2 /dev/xvda5 /dev/xvda6
mdadm --create /dev/md2 --level=1 --raid-disks=2 /dev/md0 /dev/md1
mkfs.ext3 /dev/md2
mount /dev/md2 /mnt
cat /proc/mdstat