Creating the Emergency Recovery diskettes and tapes

1. Bring the machine down to init state 1 and log in as root

2. Run vxconfigd(1M) to start up the ODM configuration daemon

3. Use vxplex(1M) to disconnect the mirrored root plexes, for example:
   
   vxplex dis home-02
   vxplex dis home2-02
   vxplex dis rootvol-02
   vxplex dis standvol-02
   vxplex dis swapvol-02
   vxplex dis tmp-02
   vxplex dis var-02

4. Set up the kernel to ignore the ODM configuration:

   • Make a backup copy of /etc/conf/pack.d/vol/space.c using the following command:
     
     cp /etc/conf/pack.d/vol/space.c /etc/conf/pack.d/vol/space.c.old

     then edit /etc/conf/pack.d/vol/space.c, and change the two lines:

     #define VOL_ROOTDEV_IS_VOLUME
     #define VOL_SWAPDEV_IS_VOLUME
     

     to:

     #undef VOL_ROOTDEV_IS_VOLUME
     #undef VOL_SWAPDEV_IS_VOLUME
     

   • Make a backup copy of /etc/conf/init.d/kernel using the following command:
     
     cp /etc/conf/init.d/kernel /etc/conf/init.d_kernel.old

     then edit /etc/conf/init.d/kernel to move the ``swp1'' entry located just after the ``vol2'' entry to just below the ``vol1'' entry, and change the line from:

     swp1::sysinit:/sbin/swap -a /dev/vx/dsk/swapvol > /dev/sysmsg 2>&1
     

     to:

     swp1::sysinit:/sbin/swap -a /dev/swap > /dev/sysmsg 2>&1
     

   • Make a backup copy of /etc/inittab using the following command:
     
     cp /etc/inittab /etc/inittab.old

     then edit /etc/inittab in the same manner as you edited /etc/conf/init.d/kernel.

   • Make a backup copy of /etc/vfstab using the following command:
     
     cp /etc/vfstab /etc/vfstab.old

     then edit /etc/vfstab, and make the following type of substitutions on the non-commented lines:
     
     Replace ``/dev/vx/[r]dsk/home'' with ``/dev/[r]dsk/c0b0t0d0s4''
     
     Replace ``/dev/vx/[r]dsk/var'' with ``/dev/[r]dsk/c0b0t0d0sb''
     
     Replace ``/dev/vx/[r]dsk/home2'' with ``/dev/[r]dsk/c0b0t0d0sc''
     
     Replace ``/dev/vx/[r]dsk/tmp'' with ``/dev/[r]dsk/c0b0t0d0sd''

     You should also comment out any other ODM-defined slices.

   • Make a backup copy of /etc/swaptab using the following command:
     
     cp /etc/swaptab /etc/swaptab.old

     then edit /etc/swaptab, replacing ``/dev/vx/dsk/swapvol'' with ``/dev/swap''

   • Run the following command:
     
     touch /etc/vx/reconfig.d/state.d/install-db

   • Run the following command to obtain the major/minor numbers of the root slice:
     
     ls -l /dev/dsk/c0b0t0d0s1

   • Replace the major/minor numbers for /.io/bootdisk/[r]root:
     
     rm /.io/bootdisk/*root
     mknod root b MAJOR MINOR
     mknod rroot c MAJOR MINOR

     where MAJOR and MINOR are the major and minor numbers displayed by the ls in the previous step.

5. Rebuild the kernel:
   
   /etc/conf/bin/idbuild -B

6. Reboot using the init 6 command. When you see the UnixWare logo appear, immediately press <Space> to enter the Bootstrap Command Processor. Enter the command initstate=1, followed by boot. This will cause the machine to boot into single-user mode.

7. Run the emergency_disk(1M) and emergency_rec(1M) commands.