1nscadm(1M)              System Administration Commands              nscadm(1M)
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NAME

6       nscadm - network storage control utility
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SYNOPSIS

9       nscadm freeze device
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12       nscadm unfreeze device
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15       nscadm isfrozen device
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DESCRIPTION

19       The nscadm command performs several network storage control functions.
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22       The  nscadm  freeze command closes existing references to the specified
23       device, and blocks future accesses. This allows maintenance of  virtual
24       volume  device drivers (for example, RAID 0, RAID 1, RAID 5) to be per‐
25       formed without shutting down the system.
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28       The nscadm unfreeze command reverses the effects of nscadm  freeze  for
29       the specified device.
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32       The nscadm isfrozen command returns the current status of the specified
33       device.
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OPTIONS

36       The nscadm command supports the following option.
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38       -h           Display the usage menu.
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OPERANDS

42       The nscadm command line supports the following operand.
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44       device
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46           Specifies the storage device to be acted upon by nscadm.
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EXIT STATUS

50       For the freeze and unfreeze, subcommands nscadm returns  the  following
51       exit values:
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53       0            Success
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56       255          Error
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60       For the isfrozen subcommand, nscadm returns the following exit values:
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62       0            Device is currently frozen.
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65       1            Device is not currently frozen.
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68       255          Error
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ATTRIBUTES

72       See attributes(5) for descriptions of the following attributes:
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77       ┌─────────────────────────────┬─────────────────────────────┐
78       │      ATTRIBUTE TYPE         │      ATTRIBUTE VALUE        │
79       ├─────────────────────────────┼─────────────────────────────┤
80       │Availability                 │SUNWscmr, SUNWscmu           │
81       ├─────────────────────────────┼─────────────────────────────┤
82       │Interface Stability          │Evolving                     │
83       └─────────────────────────────┴─────────────────────────────┘
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SEE ALSO

86       scmadm(1M), attributes(5)
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90SunOS 5.11                        2 Oct 2007                        nscadm(1M)
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