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System Administration Guide: Basic Administration

How to Display UFS Snapshot Information

You can display the current snapshots on the system by using the fssnap -i option. If you specify a file system, you see detailed information about that snapshot. If you don't specify a file system, you see information about all of the current UFS snapshots and their corresponding virtual devices.

Note –

Use the UFS file system-specific fssnap command to view the extended snapshot information as shown in the following examples.

  1. Become superuser or assume an equivalent role.

  2. List current snapshots.


    # /usr/lib/fs/ufs/fssnap -i
Snapshot number               : 0
Block Device                  : /dev/fssnap/0
Raw Device                    : /dev/rfssnap/0
Mount point                   : /export/home
Device state                  : idle
Backing store path            : /var/tmp/bs.file
Backing store size            : 0 KB
Maximum backing store size    : Unlimited
Snapshot create time          : Wed Aug 29 15:22:06 2001
Copy-on-write granularity     : 32 KB

    To display detailed information about a specific snapshot, use the following:


    # /usr/lib/fs/ufs/fssnap -i /usr
Snapshot number               : 0
Block Device                  : /dev/fssnap/0
Raw Device                    : /dev/rfssnap/0
Mount point                   : /usr
Device state                  : idle
Backing store path            : /var/tmp/bs.file
Backing store size            : 0 KB
Maximum backing store size    : Unlimited
Snapshot create time          : Wed Aug 29 15:23:35 2001
Copy-on-write granularity     : 32 KB