1nscadm(1M) System Administration Commands nscadm(1M)
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6 nscadm - network storage control utility
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9 nscadm freeze device
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12 nscadm unfreeze device
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15 nscadm isfrozen device
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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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36 The nscadm command supports the following option.
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38 -h Display the usage menu.
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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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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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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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86 scmadm(1M), attributes(5)
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90SunOS 5.11 2 Oct 2007 nscadm(1M)