How to create a secondary boot disk

Note: This will create an identical copy of the current vg00. The

      new volume group needs to as big as vg00. This will also be a static

      version of the primary boot disk which could be use in case of

      problem.

      Note: The following example is using the disk c1t6d0 and the

      volume group vg01

      1) Initialize the disk and make it bootable

           pvcreate -B /dev/rdsk/c1t6d0

           Note: the -B parameter tells pvcreate that this will be a bootable

           disk.

           mkboot /dev/dsk/c1t6d0

           mkboot -a "hpux" /dev/rdsk/c1t6d0

      2) Create the volume group

           mkdir /dev/vg01

           mknod /dev/vg01/group c 64 0x010000

           vgcreate /dev/vg01 /dev/dsk/c1t6d0

      3) Find the size of each logical volume in vg00

           vgdisplay -v /dev/vg00 | more

           look at LV Size (Mbytes) for each logical volume and note it.

           Note: this example will use these value:

                lvol1 84M

                lvol2 256M

                lvol3 140M

                lvol4 500M

                lvol5 64M

                lvol6 20M

                lvol7 500M

                lvol8 500M

         Note: The size of the new logical volumes needs to be exactly the

         same as the size of the logical volumes on the primary root disk.

      4) Create the first 3 logical volumes contiguous (needed by the system)

            lvol1:

                lvcreate -L 84 -C y -r n /dev/vg01

            lvol2:

                lvcreate -L 256 -C y -r n /dev/vg01

            lvol3:

                lvcreate -L 140 -C y -r n /dev/vg01

      5) Now create the other logical volumes

            lvol4:

                lvcreate -L 500 /dev/vg01

            lvol5:

                lvcreate -L 64 /dev/vg01

            lvol6:

                lvcreate -L 20 /dev/vg01

            lvol7:

                lvcreate -L 500 /dev/vg01

            lvol8:

                lvcreate -L 500 /dev/vg01

        6) Copy each logical volume except the swap which is usually lvol2.

            dd if=/dev/vg00/rlvol1 of=/dev/vg01/rlvol1 bs=1024k

            dd if=/dev/vg00/rlvol3 of=/dev/vg01/rlvol3 bs=1024k

            dd if=/dev/vg00/rlvol4 of=/dev/vg01/rlvol4 bs=1024k

            dd if=/dev/vg00/rlvol5 of=/dev/vg01/rlvol5 bs=1024k

            dd if=/dev/vg00/rlvol6 of=/dev/vg01/rlvol6 bs=1024k

            dd if=/dev/vg00/rlvol7 of=/dev/vg01/rlvol7 bs=1024k

            dd if=/dev/vg00/rlvol8 of=/dev/vg01/rlvol8 bs=1024k

        7) Verify the integrity of all the new volume except swap.

            Note: The following lines are base on a system with vxfs

            filesystems except for /stand (lvol1) which needs to be hfs.

            fsck -F hfs /dev/vg01/rlvol1

            fsck -F vxfs /dev/vg01/rlvol3

            fsck -F vxfs /dev/vg01/rlvol4

            fsck -F vxfs /dev/vg01/rlvol5

            fsck -F vxfs /dev/vg01/rlvol6

            fsck -F vxfs /dev/vg01/rlvol7

            fsck -F vxfs /dev/vg01/rlvol8

        8) Now configure the Boot Data Reserved Area (BDRA)

           Note: The following commands assume that /stand is lvol1,

           swap is lvol2 and / is lvol3

            lvlnboot -b /dev/vg01/lvol1 /dev/vg01

            lvlnboot -r /dev/vg01/lvol3 /dev/vg01

            lvlnboot -s /dev/vg01/lvol2 /dev/vg01

            lvlnboot -d /dev/vg01/lvol2 /dev/vg01

        9) Modify the fstab file on the new disk.

            a) If /tmp_mnt doesn't exist create it

               mkdir /tmp_mnt

            b) Mount the new root filesystem on /tmp_mnt

               mount /dev/vg01/lvol3 /tmp_mnt

            c) change to etc directory on the new disk.

               cd /tmp/etc

            d) Modify all occurence of vg00 in the fstab for vg01

               sed "s/vg00/vg01/" fstab > fstab.out

               mv fstab fstab.BAK

               mv fstab.out fstab

            e) Unmount the new root filesystem

               cd /

               umount /tmp_mnt