SUMMARY: How to undo a disksuite mirror

From: Dave Martini (martini@mrpeabody.llnl.gov)
Date: Mon Nov 13 2006 - 19:02:46 EST


This link was helpful as were suggestions by the group.

http://docs.sun.com/app/docs/doc/806-3205/6jccc20rj

For the / volume I first did a

metadetach d2 d1
metaroot /dev/dsk/c1t0d0s0

This modified /etc/vfstab and /etc/system.

Then I rebooted the machine.
Then did a metaclear - r d2.

For swap and /var I did the same thing but had to manually edit the
/etc/vfstab file to go back to the /dev/dsk syntax for each of them.

I had to do a
metadetach -rf to force the remaining metadevices to clear out.

I used metadb -d to remove the state databse replica as the last step.

Below is my original question

I'd like to undo all of the mirroring on my two internal boot disk from
Disksuite control and go back to the /dev/vx/dsk syntax for the boot disk.
I know I have to issue metadetach and metaclear commands but I'm not
sure of the order in which to issued these commands.
Do I have to manually edit the /etc/vfstab to put back the /dev/dsk
syntax for the /var, swap and / volumes after clearing the volumes from
Disksuite?

Thank You.
Dave Martini
LLNL

# metastat
d8: Mirror
      Submirror 0: d6
        State: Okay
      Submirror 1: d7
        State: Okay
      Pass: 1
      Read option: roundrobin (default)
      Write option: parallel (default)
      Size: 20484288 blocks (9.8 GB)

d6: Submirror of d8
      State: Okay
      Size: 20484288 blocks (9.8 GB)
      Stripe 0:
          Device Start Block Dbase State Reloc Hot Spare
          c1t0d0s3 0 No Okay Yes

d7: Submirror of d8
      State: Okay
      Size: 20484288 blocks (9.8 GB)
      Stripe 0:
          Device Start Block Dbase State Reloc Hot Spare
          c1t1d0s3 0 No Okay Yes

d5: Mirror
      Submirror 0: d3
        State: Okay
      Submirror 1: d4
        State: Okay
      Pass: 1
      Read option: roundrobin (default)
      Write option: parallel (default)
      Size: 8201856 blocks (3.9 GB)

d3: Submirror of d5
      State: Okay
      Size: 8201856 blocks (3.9 GB)
      Stripe 0:
          Device Start Block Dbase State Reloc Hot Spare
          c1t0d0s1 0 No Okay Yes

d4: Submirror of d5
      State: Okay
      Size: 8201856 blocks (3.9 GB)
      Stripe 0:
          Device Start Block Dbase State Reloc Hot Spare
          c1t1d0s1 0 No Okay Yes

d2: Mirror
      Submirror 0: d0
        State: Okay
      Submirror 1: d1
        State: Okay
      Pass: 1
      Read option: roundrobin (default)
      Write option: parallel (default)
      Size: 40968576 blocks (19 GB)

d0: Submirror of d2
      State: Okay
      Size: 40968576 blocks (19 GB)
      Stripe 0:
          Device Start Block Dbase State Reloc Hot Spare
          c1t0d0s0 0 No Okay Yes

d1: Submirror of d2
      State: Okay
      Size: 40968576 blocks (19 GB)
      Stripe 0:
          Device Start Block Dbase State Reloc Hot Spare
          c1t1d0s0 0 No Okay Yes

Device Relocation Information:
Device Reloc Device ID
c1t1d0 Yes
id1,sd@w4849544143484920485553313033303733464c33383030205633573135345a41
c1t0d0 Yes
id1,sd@w4849544143484920485553313033303733464c3338303020563357314b455641
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