Creating a New System Disk by Cloning

Caution: The procedure in this section destroys all data on the option disk. If the option disk contains files that you want to save, back up all files on the option disk to tape or another disk before beginning this procedure. You must perform this procedure as superuser. To ensure that the system disk that you create is identical to the original system disk, the system should be in single user mode.

1. List the disk partitioning of the system disk, for example:

# prtvtoc /dev/rdsk/dks0d1vh
...
Partition  Type  Fs   Start: sec   (cyl)    Size: sec    (cyl)  Mount Directory
 0          efs  yes        3048  (   4)        51054   (  67)   /
 1          raw            54102  (  71)        81534   ( 107) 
 6          efs  yes      135636  ( 178)      1941576   (2548)   /usr
 8       volhdr                0  (   0)         3048   (   4) 
10       volume                0  (   0)      2077212   (2726) 

1. List the disk partitioning of the option disk that is to be the clone, for example:

# prtvtoc /dev/rdsk/dks0d2vh
...
Partition  Type  Fs   Start: sec   (cyl)    Size: sec    (cyl)  Mount Directory
 0          efs             3024  (   4)        50652   (  67) 
 1          raw            53676  (  71)        81648   ( 108) 
 6          efs           135324  ( 179)      1925532   (2547) 
 8       volhdr                0  (   0)         3024   (   4) 
10       volume                0  (   0)      2060856   (2726) 

1. Compare the disk partitioning of the two disks. They must have the same layout for the root and (if used) the usr partition. If they are not the same, repartition the option disk to match the system disk using the procedure in the section "Repartitioning a Disk With fx" in this chapter.

2. Use the procedure in the section "Adding Files to the Volume Header With dvhtool" in this chapter to check the contents of the volume header of the option disk and add programs, if necessary, by copying them from the system disk.

3. Make a new filesystem on the root partition of the option disk. For example, to make an XFS filesystem with a 4 KB block size and a 1000 block internal log (the default values), give this command:

   # mkfs /dev/dsk/dks0d2s0

   As another example, to make an EFS filesystem, give this command:

   # mkfs -t efs /dev/rdsk/dks0d2s0

   For additional instructions on making an XFS filesystem, see the sections "Making an XFS Filesystem" and "Making an EFS Filesystem" in Chapter 4. For additional instructions on making an EFS filesystem, see the section "Making an EFS Filesystem" in Chapter 4. There is no need to mount the filesystems after making them.

4. If there is a separate usr partition, make a new filesystem on the usr partition of the option disk.

5. Create a temporary mount point for the option disk filesystems, for example:

   # mkdir /clone

6. Mount the Root filesystem of the option disk and change directories to the mount point, for example:

   # mount /dev/dsk/dks0d2s0 /clone

   # cd /clone

7. Use dump (for EFS filesystems) or xfsdump (for XFS filesystems) to copy the Root filesystem on the system disk to the Root filesystem of the option disk. The dump command is:

   # dump 0f - / | restore xf -

   The xfsdump command is:

   # xfsdump -l 0 - / | xfsrestore - .

8. If the disks do not have a usr partition, skip to step 13.

9. In preparation for copying the Usr filesystem, mount the Usr filesystem instead of the Root filesystem:

   # cd ..

   # umount /clone

   # mount /dev/dsk/dks0d2s6 /clone

   # cd /clone

10. Use dump (for EFS filesystems) or xfsdump (for XFS filesystems) to copy the Usr filesystem on the system disk to the Usr filesystem of the option disk. The dump command is:

    # dump 0f - /usr | restore xf -

    The xfsdump command is:

    # xfsdump -l 0 - /usr | xfsrestore - .

11. Unmount the filesystem mounted at the temporary mount point and remove the mount point, for example:

    # cd ..

    # umount /clone

    # rmdir /clone

    The option disk is now an exact copy of the system disk. It can be moved to a system with the same hardware configuration.