Error: (CLI:144) Invalid drive(s) specified when trying to rebuild 3ware RAID
We have a RAID 5 using a 3ware 9550SX RAID controller that shows one degraded disk. There is a spare drive configured for the array, but it wasn't used automatically as intended.
The current array status is the following:
> /c0 show
Unit UnitType Status %RCmpl %V/I/M Stripe Size(GB) Cache AVrfy
------------------------------------------------------------------------------
u0 RAID-5 DEGRADED - - 64K 11175.8 OFF OFF
u1 SPARE OK - - - 1863.01 - OFF
Port Status Unit Size Blocks Serial
---------------------------------------------------------------
p0 OK u0 1.82 TB 3907029168 WD-WMAY0108****
p1 OK u0 1.82 TB 3907029168 WD-WMAY0080****
p2 OK u0 1.82 TB 3907029168 WD-WMAY0109****
p3 OK u0 1.82 TB 3907029168 WD-WMAY0080****
p4 DEVICE-ERROR u0 1.82 TB 3907029168 WD-WMAY0108****
p5 OK u0 1.82 TB 3907029168 WD-WMAY0109****
p6 OK u0 1.82 TB 3907029168 WD-WMAY0080****
p7 OK u1 1.82 TB 3907029168 WD-WCAY0188****
Name OnlineState BBUReady Status Volt Temp Hours LastCapTest
---------------------------------------------------------------------------
bbu On Yes OK OK OK 0 xx-xxx-xxxx
> /c0/u1 show
Unit UnitType Status %RCmpl %V/I/M Port Stripe Size(GB)
------------------------------------------------------------------------
u1 SPARE OK - - p7 - 1863.01
> /c0/u0 show
Unit UnitType Status %RCmpl %V/I/M Port Stripe Size(GB)
------------------------------------------------------------------------
u0 RAID-5 DEGRADED* - - - 64K 11175.8
u0-0 DISK OK - - p6 - 1862.63
u0-1 DISK OK - - p5 - 1862.63
u0-2 DISK DEGRADED - - p4 - 1862.63
u0-3 DISK OK - - p3 - 1862.63
u0-4 DISK OK - - p2 - 1862.63
u0-5 DISK OK - - p1 - 1862.63
u0-6 DISK OK - - p0 - 1862.63
u0/v0 Volume - - - - - 11175.8
When trying to manually trigger a rebuild with tw_cli we encountered the following error:
> /c0/u0 start rebuild disk=p7
Error: (CLI:144) Invalid drive(s) specified.
We tried a few more variations of that command (/c0/u0 start rebuild disk=7 and maint rebuild c0 u0 p7), but it does not seem to be a syntax error or a mistake in specifying the drive. For some reason the RAID controller doesn't want to use this specific drive to rebuild.
Does the spare drive have to be in the same unit? Or could it be an issue that the spare is from a different batch? How can I get the array to use the spare we have to rebuild the array?
Solution 1:
Before start rebuilding of array, you need configure controller settings. This command will enable automatic rebuilding:
> /c0 set autorebuild=on
Remove bad disk 4 from array:
> /c0/p4 remove
Use next command to identify bad disk by led indicator:
> /c0/p4 set identify=on
Eject bad disk from server and drop it into recycle bin. If array rebuilding won't start automatically then start it manually:
> /c0/u0 start rebuild disk=7
When you will insert new disk as hot spare enter these commands:
> /c0 rescan
> /c0/p4 add type=spare