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Error create software raid device on 2005.0 (x86)
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dellaxim
Tux's lil' helper
Tux's lil' helper


Joined: 04 Mar 2005
Posts: 138

PostPosted: Wed Mar 30, 2005 7:23 pm    Post subject: Error create software raid device on 2005.0 (x86) Reply with quote

Hi,
I just have time to try out the new 2005.0 today but failed to create software raid devices for my pc.
I create a raidtab:
Code:

# /boot (RAID 1)
raiddev                 /dev/md0
raid-level              1
nr-raid-disks           2
chunk-size              64
persistent-superblock   1
device                  /dev/sda1
raid-disk               0
device                  /dev/sdb1
raid-disk               1


# / (RAID 1)
raiddev                 /dev/md2
raid-level              1
nr-raid-disks           2
chunk-size              64
persistent-superblock   1
device                  /dev/sda3
raid-disk               0
device                  /dev/sdb3
raid-disk               1

 
# /home (RAID 0)
raiddev                 /dev/md3
raid-level              0
nr-raid-disks           2
chunk-size              64
persistent-superblock   1
device                  /dev/sda4
raid-disk               0
device                  /dev/sdb4
raid-disk               1


and then I did
Code:
/dev> MAKEDEV md

which create bunches of raid devices in /dev fine
but then when I executed
Code:
mkraid /dev/md*

It returned an error:
Code:
cannot determine md version: 6

which is really weird because I did it and it worked like charm with my old 2004.3.

Anyone please help me out!
Thanks for all reply!

:)
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R!tman
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Joined: 18 Dec 2003
Posts: 1303
Location: Zurich, Switzerland

PostPosted: Wed Mar 30, 2005 7:29 pm    Post subject: Reply with quote

Did you load the modules for the raid devices? I think it goes like this, ie:
Code:
modprobe raid1
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DntKnwHw
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Joined: 14 Aug 2003
Posts: 74
Location: Philippines

PostPosted: Thu Apr 07, 2005 1:15 pm    Post subject: Reply with quote

i think you have to use mknod etc...

documents can be read on the documentaion of gentoo, x86 tips and tricks

happy raidding :)
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R!tman
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Joined: 18 Dec 2003
Posts: 1303
Location: Zurich, Switzerland

PostPosted: Thu Apr 07, 2005 3:32 pm    Post subject: Reply with quote

DntKnwHw wrote:
i think you have to use mknod etc...

documents can be read on the documentaion of gentoo, x86 tips and tricks

happy raidding :)

Using 2004.3 there was no need to mknod. Modprobing the raid modules was enough. But, if they changed that, then using mknod first is neccessary.

Good tip, DntKnwHw, I totally forgot about that.
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arkane
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Joined: 30 Apr 2002
Posts: 918
Location: Phoenix, AZ

PostPosted: Thu Apr 07, 2005 9:01 pm    Post subject: Reply with quote

Unfortunately it doesn't setup the /dev/md* stuff.

mknod /dev/md0 b 9 0
mknod /dev/md1 b 9 1
mknod /dev/md2 b 9 2
etc...
then raidstart /dev/md0 /dev/md1 /dev/md2 etc

your good to go then.
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pilla
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Joined: 07 Aug 2002
Posts: 7694
Location: Pelotas, BR

PostPosted: Wed Jul 20, 2005 2:06 pm    Post subject: Reply with quote

See this thread.
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