Cloning through SDS Mirror, boot failure

From: Tony Howat (t.howat_at_linst.ac.uk)
Date: 05/20/04

  • Next message: ktn: "Re: CDE logout problem" 
    Date: Thu, 20 May 2004 14:42:41 +0100
To: sunmanagers@sunmanagers.org

    Dear Managers,

    I am attempting to clone a Solaris 9 SDS mirrored bootdisk system
    running on a V120 to another V120. To achieve this I am breaking the
    mirror to target 1 on the source system :

    metadetach -f d30 d20
    metadetach -f d31 d21
    metadetach -f d32 d22
    metadetach -f d33 d23
    metadetach -f d34 d24
    metadetach -f d35 d25

    then I pull target 1 and insert it into the destination as target zero.
    Booting produces the following output....

    So, I insert the disk from the source system into the destination system
    and boot :

    ok boot disk1
    Boot device: /pci@1f,0/pci@1/scsi@8/disk@1,0 File and args:
    SunOS Release 5.9 Version Generic_112233-08 64-bit
    Copyright 1983-2003 Sun Microsystems, Inc. All rights reserved.
    Use is subject to license terms.
    Cannot mount root on /pseudo/md@0:0,30,blk fstype ufs

    panic[cpu0]/thread=140a000: vfs_mountroot: cannot mount root

    0000000001409970 genunix:vfs_mountroot+70 (0, 0, 0, 200, 1456da8, 0)
       %l0-3: 000000000144a800 000000000144a800 0000000000002000
    0000000001495a18
       %l4-7: 0000000001493400 0000000001411be8 000000000144b000
    000000000144e000
    0000000001409a20 genunix:main+98 (1409ba0, f00618b8, 1409ec0, 33267c,
    2000, 500)

       %l0-3: 0000000000000001 0000000000000000 0000000001412c90
    0000000078002000
       %l4-7: 000000000140a000 0000000000334000 000000000149b0d8
    0000000001062dd0

    skipping system dump - no dump device configured
    rebooting...

    Oops. The same happens if I have the disk in the t0 slot.

    It appears to be getting some way through and actually loading the
    kernel since the errors refer to md. I'm a little stumped.

    I'm using metadetach to break the mirror, is that correct? I'm starting
    to think that perhaps that mounting the root partition on the broken
    mirror, editing the /etc/vfstab to use non SDS mounts, then moving it to
    the second system and reconfiguring SDS on the second system would be
    the way to go.

    Nevertheless I don't quite understand why it won't boot? I've done
    similar on 280R's and the only step I'm not doing is the disks part to
    sort out fiber channel IDs, but the V120 disks aren't FC.

    To rebuild a mirror on the source server after each attempt at cloning,
    I use :

    metadb -d -f /dev/dsk/c0t1d0s6
    metadetach -f d30 d20
    metadetach -f d31 d21
    metadetach -f d32 d22
    metadetach -f d33 d23
    metadetach -f d34 d24
    metadetach -f d35 d25
    metaclear d20
    metaclear d21
    metaclear d22
    metaclear d23
    metaclear d24
    metaclear d25

    then:

    prtvtoc /dev/rdsk/c0t0d0s2 | fmthard -s - /dev/rdsk/c0t1d0s2
    metadb -a -f -c2 /dev/dsk/c0t0d0s6 /dev/dsk/c0t1d0s6
    metainit d20 1 1 c0t1d0s0
    metainit d21 1 1 c0t1d0s1
    metainit d22 1 1 c0t1d0s3
    metainit d23 1 1 c0t1d0s4
    metainit d24 1 1 c0t1d0s5
    metainit d25 1 1 c0t1d0s7
    metattach d30 d20
    metattach d31 d21
    metattach d32 d22
    metattach d33 d23
    metattach d34 d24
    metattach d35 d25
    installboot /usr/platform/`uname -i`/lib/fs/ufs/bootblk /dev/rdsk/c0t1d0s0

    Advice would be appreciated. 

    -- 
Tony Howat
UNIX Network Administrator
University Of The Arts, London
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