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System Administration Guide: Devices and File Systems

ProcedureHow to Create a Full Backup of a UFS Snapshot (ufsdump)

  1. Become superuser or assume an equivalent role.

  2. Identify the UFS snapshot to be backed up.


    # /usr/lib/fs/ufs/fssnap -i /file-system

    For example:


    # /usr/lib/fs/ufs/fssnap -i /usr
Snapshot number               : 1
Block Device                  : /dev/fssnap/1
Raw Device                    : /dev/rfssnap/1
Mount point                   : /usr
Device state                  : idle
Backing store path            : /var/tmp/snapshot2
Backing store size            : 544 KB
Maximum backing store size    : Unlimited
Snapshot create time          : Mon Jul 12 10:37:50 2010
Copy-on-write granularity     : 32 KB

  3. Back up the UFS snapshot.


    # ufsdump 0ucf /dev/rmt/0 /snapshot-name

    For example:


    # ufsdump 0ucf /dev/rmt/0 /dev/rfssnap/1

  4. Verify that the snapshot has been backed up.

    For example:


    # ufsrestore tf /dev/rmt/0