Veritas File System 5.0 AdministratorÆs Guide, HP-UX 11i v3, First Edition, May 2008

Note: The vol1 file system must already be mounted before the Storage

Checkpoint can be mounted.

■ To remount the Storage Checkpoint named may_23 as a writable Storage

Checkpoint, type:

# mount -F vxfs -o ckpt=may_23,remount,rw \

/dev/vx/dsk/fsvol/vol1:may_23 /fsvol_may_23

■ To mount this Storage Checkpoint automatically when the system starts up,

put the following entries in the /etc/fstab file:

Device-Special-File Mount-Point fstype options backup- pass-

frequency number

/dev/vx/dsk/fsvol/ /fsvol vxfs defaults 0 0

vol1

/dev/vx/dsk/fsvol/ /fsvol_may_23 vxfs ckpt=may_23 0 0

vol1:may_23

■ To mount a Storage Checkpoint of a cluster file system, you must also use the

-o cluster option:

# mount -F vxfs -o cluster,ckpt=may_23 \

/dev/vx/dsk/fsvol/vol1:may_23 /fsvol_may_23

You can only mount a Storage Checkpoint cluster-wide if the file system that

the Storage Checkpoint belongs to is also mounted cluster-wide. Similarly,

you can only mount a Storage Checkpoint locally if the file system that the

Storage Checkpoint belongs to is mounted locally.

You can unmount Storage Checkpoints using the umount command.

# umount /fsvol_may_23

# umount /dev/vx/dsk/fsvol/vol1:may_23

Note: You do not need to run the fsck utility on Storage Checkpoint pseudo devices

because pseudo devices are part of the actual file system.

Converting a data Storage Checkpoint to a nodata Storage Checkpoint

A nodata Storage Checkpoint does not contain actual file data. Instead, this type

of Storage Checkpoint contains a collection of markers indicating the location of

all the changed blocks since the Storage Checkpoint was created.

Storage Checkpoints

Storage Checkpoint administration