linux raid questions
Mark Szidik
szidikm@mlc.lib.mi.us
Tue, 19 Sep 2000 15:10:00 -0400 (EDT)
I am setting up software RAID in Linux for the first time.
(I am going by the HOWTO for version .90 of the raidtool)
I re compiled the 2.2.17 kernel and turned the MD option on.
Reboot and now I can cat /proc/mdstat:
Personalities : [1 linear] [2 raid0] [3 raid1]
read_ahead not set
md0 : inactive
md1 : inactive
md2 : inactive
md3 : inactive
I just want to do RAID 1, so here is my /etc/raidtab file:
raiddev /dev/md0
raid-level 1
nr-raid-disks 2
nr-spare-disks 0
chunk-size 4
persistent-superblock 1
device /dev/sdb1
raid-disk 0
device /dev/sdc1
raid-disk
Now I try to /sbin/mkraid /dev/md0 and I get the following:
handling MD device /dev/md0
analyzing super-block
disk 0: /dev/sdb1, 17751793kB, raid superblock at 17751680kB
disk 1: /dev/sdc1, 17751793kB, raid superblock at 17751680kB
mkraid: aborted, see the syslog and /proc/mdstat for potential clues.
Of course there is nothing in /var/log/messages and /proc/mdstat is
unchanged at:
Personalities : [1 linear] [2 raid0] [3 raid1]
read_ahead not set
md0 : inactive
md1 : inactive
md2 : inactive
md3 : inactive
Can anyone help me with this?
Thanks,
Mark