nscadm

- network storage control utility

Synopsis

nscadm freeze device

nscadm unfreeze device

nscadm isfrozen device

Description

The nscadm command performs several network storage control functions.

The nscadm freeze command closes existing references to the specified device, and blocks future accesses. This allows maintenance of virtual volume device drivers (for example, RAID 0, RAID 1, RAID 5) to be performed without shutting down the system.

The nscadm unfreeze command reverses the effects of nscadm freeze for the specified device.

The nscadm isfrozen command returns the current status of the specified device.

Options

The nscadm command supports the following option.

-h

Display the usage menu.

Operands

The nscadm command line supports the following operand.

device

Specifies the storage device to be acted upon by nscadm.

Exit Status

For the freeze and unfreeze, subcommands nscadm returns the following exit values:

0

Success

255

Error

For the isfrozen subcommand, nscadm returns the following exit values:

0

Device is currently frozen.

1

Device is not currently frozen.

255

Error

Attributes

See attributes(5) for descriptions of the following attributes:

See Also

scmadm(1M), attributes(5)