Maintenance script: Created page with " === CLI tools === ==== tw_cli ==== *install tw_cli **tw_cli has an interactive mode also *dispaly all controllers

 ./tw_cli show
 Ctl   Model        Ports   Drives..."

2015-08-26T12:28:09Z

Created page with " === CLI tools === ==== tw_cli ==== *install tw_cli **tw_cli has an interactive mode also *dispaly all controllers <pre> ./tw_cli show Ctl Model Ports Drives..."

New page

=== CLI tools ===
==== tw_cli ====
*install tw_cli
**tw_cli has an interactive mode also
*dispaly all controllers
<pre>
./tw_cli show
Ctl Model Ports Drives Units NotOpt RRate VRate BBU
------------------------------------------------------------------------
c0 9550SXU-16ML 16 16 3 1 1 1 OK
</pre>
*display detailed info of the controllers
<pre>
./tw_cli /c0 show all
</pre>
*show last messages
<pre>
./tw_cli /c0 show alarms
</pre>

=== Problem solving ===
==== Incomplete unit detected ====
*the cause of this is eg a broken disk or a disk that lost connection with the controller
<pre>
c0 [...] WARNING Incomplete unit detected: unit=1
</pre>
**check further messages for if rebuild was sucesful (in case of raid5+hot spare)
<pre>
c0 [...] INFO Rebuild started: unit=1
c0 [...] INFO Rebuild completed: unit=1
</pre>
*try to locate the disk
**be careful when doing this. best way is to fake activity (on both raid and system disks) and check the activity leds of the disks to see which one is missing!
*unplug and replug the disk
**check messages if it was detected
<pre>
c0 [...] INFO Drive inserted: port=12
</pre>
*if the disk was broken, get a new one first!
*if it was only a connection lost, the drive will reappear as a INOPERABLE raid unit (eg u2 in the following example)
<pre>
Unit UnitType Status %RCmpl %V/I/M Stripe Size(GB) Cache AVrfy
------------------------------------------------------------------------------
u0 RAID-1 OK - - - 74.4951 ON OFF
u1 RAID-5 OK - - 64K 5587.82 ON OFF
u2 RAID-5 INOPERABLE - - 64K 5587.82 OFF OFF
</pre>
**this is not the real raid setup, the controller just detected that the disk was part of a raid set before
**you need to remove the INOPERABLE unit
**doublecheck the name of the unit!! (in the example only disk 12 is part of the unit)
<pre>
./tw_cli /c0/u2 show
Unit UnitType Status %RCmpl %V/I/M Port Stripe Size(GB)
------------------------------------------------------------------------
u2 RAID-5 INOPERABLE - - - 64K 5587.82
u2-0 DISK DEGRADED - - - - 465.651
u2-1 DISK DEGRADED - - - - 465.651
u2-2 DISK OK - - p12 - 465.651
u2-3 DISK DEGRADED - - - - 465.651
u2-4 DISK DEGRADED - - - - 465.651
u2-5 DISK DEGRADED - - - - 465.651
u2-6 DISK DEGRADED - - - - 465.651
u2-7 DISK DEGRADED - - - - 465.651
u2-8 DISK DEGRADED - - - - 465.651
u2-9 DISK DEGRADED - - - - 465.651
u2-10 DISK DEGRADED - - - - 465.651
u2-11 DISK DEGRADED - - - - 465.651
u2-12 DISK DEGRADED - - - - 465.651
u2/v0 Volume - - - - - 5587.82
</pre>
**remove the unit
<pre>
./tw_cli /c0/u2 del
Deleting /c0/u2 will cause the data on the unit to be permanently lost.
Do you want to continue ? Y|N [N]: Y
Deleting unit c0/u2 ...Done.
</pre>
**reassign the disk to act as a spare
**check the disk name
***in this example the disk is called <tt>12</tt> on port <tt>p12</tt>
***the <tt>Belongs to Unit = N/A</tt> part indicates that the disk is not used elsewhere
<pre>
./tw_cli /c0/p12 show all
/c0/p12 Status = OK
/c0/p12 Model = WDC WD5000YS-01MPB0
/c0/p12 Firmware Version = 09.02E09
/c0/p12 Serial = WD-WMANU1674499
/c0/p12 Capacity = 465.76 GB (976773168 Blocks)
/c0/p12 Identify Status = N/A
/c0/p12 SATA Link Speed Supported = 1.5 Gb/s and 3.0 Gb/s
/c0/p12 SATA Link Speed = 3.0 Gb/s
/c0/p12 NCQ Supported = Yes
/c0/p12 NCQ Enabled = Yes
/c0/p12 Belongs to Unit = N/A

/c0/p12 Drive Smart Data:
10 00 01 0F 00 64 FD 00 00 00 00 00 00 00 03 03
00 DF DF B8 16 00 00 00 00 00 04 32 00 64 64 09
...
</pre>
**set the disk as spare
<pre>
./tw_cli /c0 add type=spare disk=12
Creating new unit on controller /c0 ... Done. The new unit is /c0/u2.
</pre>
***check the result
<pre>
./tw_cli /c0 show

Unit UnitType Status %RCmpl %V/I/M Stripe Size(GB) Cache AVrfy
------------------------------------------------------------------------------
u0 RAID-1 OK - - - 74.4951 ON OFF
u1 RAID-5 OK - - 64K 5587.82 ON OFF
u2 SPARE OK - - - 465.753 - OFF

...
</pre>

**if the disk was a datadisk, all is ok
**if it was an operating disk that was broken, a datadisk will be used a spare for the RAID1
***but using the new spare disk won't work as a spare for the datadisks (as the size is lower)
***you need to locate the datadisk of the OS RAID1 and disable it, eg by removing it
***make sure there are 2 OS disks!!
***the new spare will be used to rebuild the RAID1
***reinsert the datadisk disk and repeat the above procedure to reassign it as a spare disk

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3ware controller - Revision history

Maintenance script: Created page with " === CLI tools === ==== tw_cli ==== *install tw_cli **tw_cli has an interactive mode also *dispaly all controllers
./tw_cli show Ctl Model Ports Drives..."

3ware controller - Revision history

Maintenance script: Created page with " === CLI tools === ==== tw_cli ==== *install tw_cli **tw_cli has an interactive mode also *dispaly all controllers ./tw_cli show Ctl Model Ports Drives..."

Maintenance script: Created page with " === CLI tools === ==== tw_cli ==== *install tw_cli **tw_cli has an interactive mode also *dispaly all controllers
./tw_cli show Ctl Model Ports Drives..."