Veritas Storage Foundation 5.1 SP1 Advanced Features Administrator"s Guide (5900-1503, April 2011)

# fsckptadm list /mnt0
/mnt0
Accessing a Storage Checkpoint
You can mount Storage Checkpoints using the mount command with the mount
option -o ckpt=ckpt_name.
See the mount_vxfs(1M) manual page.
Observe the following rules when mounting Storage Checkpoints:
■ Storage Checkpoints are mounted as read-only Storage Checkpoints by default.
If you must write to a Storage Checkpoint, mount it using the -o rw option.
■ If a Storage Checkpoint is currently mounted as a read-only Storage Checkpoint,
you can remount it as a writable Storage Checkpoint using the -o remount
option.
■ To mount a Storage Checkpoint of a file system, first mount the file system
itself.
■ To unmount a file system, first unmount all of its Storage Checkpoints.
Warning: If you create a Storage Checkpoint for backup purposes, do not mount
it as a writable Storage Checkpoint. You will lose the point-in-time image if you
accidently write to the Storage Checkpoint.
If older Storage Checkpoints already exist, write activity to a writable Storage
Checkpoint can generate copy operations and increased space usage in the older
Storage Checkpoints.
A Storage Checkpoint is mounted on a special pseudo device. This pseudo device
does not exist in the system name space; the device is internally created by the
system and used while the Storage Checkpoint is mounted. The pseudo device is
removed after you unmount the Storage Checkpoint. A pseudo device name is
formed by appending the Storage Checkpoint name to the file system device name
using the colon character (:) as the separator.
For example, if a Storage Checkpoint named may_23 belongs to the file system
residing on the special device /dev/vx/dsk/fsvol/vol1, the Storage Checkpoint
pseudo device name is:
/dev/vx/dsk/fsvol/vol1:may_23
■ To mount the Storage Checkpoint named may_23 as a read-only Storage
Checkpoint on directory /fsvol_may_23, type:
277Administering Storage Checkpoints
Storage Checkpoint administration