VERITAS File SystemÖ 3.5 (HP OnlineJFS/JFS3.5) AdministratorÆs Guide (December 2002)

Chapter 5

Storage Checkpoints

Storage Checkpoint Administration

Removing a Storage Checkpoint

You can delete a Storage Checkpoint by specifying the remove keyword of the fsckptadm command.

Specifically, you can use either the synchronous or asynchronous method of removing a Storage Checkpoint;

the asynchronous method is the default method. The synchronous method entirely removes the Storage

Checkpoint and returns all of the blocks to the file system before completing the fsckptadm operation. The

asynchronous method simply marks the Storage Checkpoint for removal and causes fsckptadm to return

immediately. At a later time, an independent kernel thread completes the removal operation and releases the

space used by the Storage Checkpoint.

In this example, /mnt0 is a mounted VxFS file system with a Version 4 disk layout. This example shows the

asynchronous removal of the Storage Checkpoint named thu_8pm and synchronous removal of the Storage

Checkpoint named thu_7pm. This example also lists all the Storage Checkpoints remaining on the /mnt0 file

system after the specified Storage Checkpoint is removed:

# fsckptadm remove thu_8pm /mnt0

# fsckptadm list /mnt0

/mnt0

thu_7pm:

ctime= Thu Jun 1 19:02:17 2001

mtime= Thu Jun 1 19:02:17 2001

flags= nodata

# fsckptadm -s remove thu_7pm /mnt0

# fsckptadm list /mnt0

/mnt0