Maint Commands
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103
Examples:
To create a 12-member RAID-0 array with 128K stripe size on controller 0:
CLI> maint createunit c0 rraid0 k256 p0-11
To create a hot spare using a drive on port-2 controller-0 for automatic
rebuilds:
CLI> maint createunit c0 rspare p2
Alert!
When creating a hot spare, be sure to select a drive with an
equal or larger size than the smallest drive in your redundant array.
Otherwise it can’t be used in a rebuild.
[maint] rebuild
cid uid pid_list
[ignoreECC]
This command allows you to rebuild a DEGRADED unit by using the
specified port. Rebuild applies only to redundant arrays such as RAID 1,
RAID 5, RAID 10 and RAID 50.
During rebuild, bad sectors on the source disk cause the rebuild to fail. Using
the ignoreECC option (equivalent to checking the 'Force continue on source
errors' box in 3DM) allows the rebuild to continue when source errors occur,
but a file system check is recommended once the rebuild is complete.
Note:
The ignoreECC option is not required for the 9000 series, if the variable
is already assigned when you create or set later. Refer to the “set
overwriteECC cid uid on|off” on page 114 for more info.
The rebuild process is a background process and changes the state of a unit to
REBUILDING. Various
info
commands also show a percent completion as
rebuilding progresses.
Ports that are to be used to rebuild a unit must be a Spare type or an
unconfigured drive. You must first use
remove
to remove the failed drive,
then use
rescan
to add the new drive before you can use
rebuild
.
[maint] rebuild
cid uid
pause
This command allows you to pause the rebuild operation on the specified unit.
This feature is intended for model 7000 and 8000 only. Model 9000 has an on-
board scheduler where rebuild operations can be scheduled to take place at
specified start and stop times.
Rebuild pause and resume function is provided
to enable 7000/8000 users to achieve similar functionality with the use of OS-
provided schedulers.
See also “Sched Commands” on page 106.
