M-am jucat acum cateva zile cu fisiere loop montate intr-un array RAID :)
Cum nu aveam inima sa ma joc cu partitii reale am folosit niste fisiere.
Am facut doua fisiere raid-0 si raid-1 care le-am agatat de un loop
apoi am facut un RAID 1 din care apoi am facut un LVM
in care mi-am facut un volum care l-am formatat si apoi montat.
Poate mai vor si altii sa experimenteze:
dd if=/dev/zero of=raid-0 count=10240 bs=1024
dd if=/dev/zero of=raid-1 count=10240 bs=1024
losetup /dev/loop1 raid-1
losetup /dev/loop0 raid-0
mkraid /dev/md0
cat /proc/mdstat
vi /etc/raidtab
----8<---- file: /etc/raidtab ----
raiddev /dev/md0
raid-level 1
nr-raid-disks 2
nr-spare-disks 0
persistent-superblock 1
chunk-size 4
device /dev/loop0
raid-disk 0
device /dev/loop1
raid-disk 1
----8<----------------------------
raidstart /dev/md0
cat /proc/mdstat
pvcreate /dev/md0
vgcreate un_volum /dev/md0
vgchange -a y un_volum
lvcreate -L5 -ntestlv un_volum
vgdisplay -v un_volum
mkfs.ext3 /dev/un_volum/testlv
mkdir /mnt/volum
mount /dev/un_volum/testlv /mnt/volum
umount /mnt/volum
vgchange -a n
raidstop /dev/md0
losetup -d /dev/loop0
losetup -d /dev/loop1
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