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raid [2009/09/29 15:02] – 172.26.0.166raid [2009/09/30 05:11] – 172.26.0.166
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 There is a utility, tw_cli, which can be used to control the hardware raid.  The hardware RAID has three arrays, all RAID 5.  Each "unit" (row) is one array. There is a utility, tw_cli, which can be used to control the hardware raid.  The hardware RAID has three arrays, all RAID 5.  Each "unit" (row) is one array.
  
-| 8 | 9 | 10 | 11 | +| Port 8 | Port 9 | Port 10 | Port 11 | 
-| 4 | 5 | 6 | 7 | +| Port 4 | Port 5 | Port 6 | Port 7 | 
-| 0 | 1 | 2 | 3 |+| Port 0 | Port 1 | Port 2 | Port 3 |
  
 Study the output of ''show'' to know which controller to manage.  Then you can use ''/c1 show'' to show the status of that particular controller.  Things to look for: Study the output of ''show'' to know which controller to manage.  Then you can use ''/c1 show'' to show the status of that particular controller.  Things to look for:
Line 82: Line 82:
 Rebuild the degraded array: Rebuild the degraded array:
 <code>maint rebuild c1 u2 p5</code> <code>maint rebuild c1 u2 p5</code>
-Check the status of the rebuild by monitoring ''/c1 show''+ 
 +Check the status of the rebuild by monitoring ''/c1 show'', but I have a feeling this might disturb the rebuild process.  In any case, you can check the status by following the output of ''dmesg'': 
 + 
 +<file>3w-9xxx: scsi1: AEN: INFO (0x04:0x000B): Rebuild started:unit=2. 
 +3w-9xxx: scsi1: AEN: INFO (0x04:0x0005): Background rebuild done:unit=2.</file> 
 + 
 +This sucks: 
 + 
 +<file>3w-9xxx: scsi1: AEN: INFO (0x04:0x0029): Background verify started:unit=0. 
 +3w-9xxx: scsi1: AEN: INFO (0x04:0x002B): Background verify done:unit=0. 
 +3w-9xxx: scsi1: AEN: ERROR (0x04:0x0002): Degraded unit detected:unit=0, port=3</file> 
 + 
 +<code>$ sudo tw_cli  
 +Password:  
 +//hpc-ilri> /c1 show 
 + 
 +Unit  UnitType  Status         %RCmpl  %V/I/M  Stripe  Size(GB)  Cache  AVrfy 
 +------------------------------------------------------------------------------ 
 +u0    RAID-5    DEGRADED       -       -       64K     698.461   ON     OFF     
 +u1    RAID-5    OK             -       -       64K     698.461   ON     OFF     
 +u2    RAID-5    OK             -       -       64K     698.461   ON     OFF     
 + 
 +Port   Status           Unit   Size        Blocks        Serial 
 +--------------------------------------------------------------- 
 +p0     OK               u0     232.88 GB   488397168     WD-WMAEP2714804      
 +p1     OK               u0     232.88 GB   488397168     WD-WMAEP1570106      
 +p2     OK               u0     232.88 GB   488397168     WD-WMAEP2712887      
 +p3     DEGRADED         u0     232.88 GB   488397168     WD-WMAEP2714418      
 +p4     OK               u2     232.88 GB   488397168     WD-WCAT1C715001      
 +p5     OK               u2     232.88 GB   488397168     WD-WMAEP2713449      
 +p6     OK               u2     232.88 GB   488397168     WD-WMAEP2715070      
 +p7     OK               u2     232.88 GB   488397168     WD-WMAEP2712590      
 +p8     OK               u1     232.88 GB   488397168     WD-WMAEP2712574      
 +p9     OK               u1     232.88 GB   488397168     WD-WMAEP2734142      
 +p10    OK               u1     232.88 GB   488397168     WD-WMAEP2702155      
 +p11    OK               u1     232.88 GB   488397168     WD-WMAEP2712472  </code> 
 + 
 +Looks like another drive failed.
raid.txt · Last modified: 2010/09/19 23:58 by aorth