Converting to AdvFS from One Disk to Another Disk

You can convert the /usr (UFS) file system on one disk to the equivalent /usr (AdvFS) file system on a different target disk.

Needs:

• A second disk, with 5 % more disk space for the converted file system

Setups:

• Existing UFS configuration
  File system: /usr
  Disk partition: /dev/rz3g
• New AdvFS configuration
  File system: /usr
  Disk partition: /dev/rz2c
  Mount directory: /usr.advfs
  File domain: usr_domain
  Fileset: usr
  

Conversion procedure:

• Login as root on the system that contains the /usr file system
• Create a file domain and fileset by entering the following commands:
  # mkfdmn /dev/rz2c usr_domain
# mkfset usr_domain usr

• Create a mount-point directory and mount the new fileset as follows:
  # mkdir /usr.advfs
# mount -t advfs usr_domain#usr /usr.advfs

• Change to the /usr directory
  # cd /usr

• While there is no activity on the system, copy the contents of the UFS file system to the AdvFS file system
  # vdump -0f - -D . | vrestore -xf - -D /usr.advfs

• Edit /etc/fstab and:

  $\rhd$ search for the entry that mounts /usr as UFS:
  /dev/rz3g /usr ufs rw 1 2

  $\rhd$ replace the previous line with the AdvFS mount:
  usr_domain#usr /usr advfs rw

• Shutdown and reboot the system. Once the system prompt returns, the converted /usr file system is ready to use