Hi,
is it possible to "do" raid on top of raid ?
on one pc (6x86) i have 5 disks
170mb hda /,swap
420mb hdb | md0 | |
700mb sdb |linear | md1 |
1080mb sdc |striping | md2 /mnt
2000mb sda |mirroring
or
170mb hda /,swap
420mb hdb | md0 |
700mb sdb |linear | md1
1080mb sdc | |mirroring /mnt
2000mb sda |
i have 2.2.14 with isdn-, reiserfs- and mingos raid patches (B1)
with raidtools 0.90 19990824 (are there any newer ?). i can do
"mkraid /dev/md0" and "mkraid dev/md1" but if i try to access
/dev/md1 (make a filesystem for example) i get a message "Got md
request, not good..." and linux is pretty dead :-((
/proc/mdstat after the mkraid: look right for me???
Personalities : [linear] [raid0] [raid1]
read_ahead 1024 sectors
md1 : active raid0 md0[1] sdc1[0] 2189696 blocks 8k chunks
md0 : active linear hdb1[0] sdb1[1] 1131648 blocks 8k rounding
unused devices: <none>
my /etc/raidtab:
raiddev /dev/md0
raid-level linear
nr-raid-disks 2
persistent-superblock 1
chunk-size 8
device /dev/hdb1
raid-disk 0
device /dev/sdb1
raid-disk 1
raiddev /dev/md1
raid-level 0
nr-raid-disks 2
persistent-superblock 1
chunk-size 8
device /dev/sdc1
raid-disk 0
device /dev/md0
raid-disk 1
#raiddev /dev/md2
# raid-level 0
# nr-raid-disks 2
# persistent-superblock 1
# chunk-size 8
# device /dev/md1
# raid-disk 0
# device /dev/sda1
# raid-disk 1
Bye,
Rainer
