PowerScale: Finding which drive belongs to which diskpool

Summary: A diskpool is a collection of disks distributed among a subset of cluster nodes. It is part of the cluster's storage infrastructure and helps manage how data is stored across multiple disks. The concept behind diskpools is to optimize performance, reliability, and storage efficiency. ...

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Instructions

To find which drive belongs to a diskpool, use the disi -I diskpools ls command to list diskpools and their members. Check the "Members" column to identify the diskpool ID and corresponding bay numbers.

Symptoms:

Two drives are in Smartfail state.

  • Drive - Bay C1   
  • Drive - Bay C2
# isi devices drive list
Lnn  Location  Device    Lnum  State     Serial       Sled
 -----------------------------------------------------------
 4    Bay  1    /dev/da1  15    L3        GKNX0K100651 N/A  -1
 4    Bay  2    -         N/A   EMPTY                  N/A  -2
 4    Bay  A0   /dev/da9  9     HEALTHY   K7H0R3KL     A  -3
 4    Bay  A1   /dev/da2  14    HEALTHY   K7H0MAHL     A  -4
 4    Bay  A2   /dev/da10 8     HEALTHY   K7GS3V5L     A  -5
 4    Bay  B0   /dev/da3  13    HEALTHY   K7H11MJL     B  -6
 4    Bay  B1   /dev/da11 7     HEALTHY   K7H0918L     B  -7
 4    Bay  B2   /dev/da4  12    HEALTHY   K7H0Y0TL     B  -8
 4    Bay  C0   /dev/da13 17    HEALTHY   V30SNMWM     C  -9
 4    Bay  C1   /dev/da12 11    SMARTFAIL K7GYYE9L     C  -10      <<<<<<
 4    Bay  C2   /dev/da5  5     SMARTFAIL K7H0R0HL     C  -11      <<<<<<
 4    Bay  D0   /dev/da6  10    HEALTHY   K7GZMATL     D  -12
 4    Bay  D1   /dev/da14 4     HEALTHY   K7H0Y8VL     D --13
 4    Bay  D2   /dev/da7  3     HEALTHY   K4KDWD6B     D --14
 4    Bay  E0   /dev/da15 2     HEALTHY   K4KDWG5B     E --15
 4    Bay  E1   /dev/da8  1     HEALTHY   K4KDYTWB     E --16
 4    Bay  E2   /dev/da16 0     HEALTHY   K7H0R8ZL     E --17
 -----------------------------------------------------------
 Total: 17

 

Cause:

The Smartfailed drives belong to Bay C1 and Bay C2, which are part of diskpool 3 and 4.

  • The drives are listed as SMARTFAIL in the output of the command `isi storage pool list`.
  • The drives are assigned to diskpool 3 and 4 based on the output of the disi -I diskpools ls command.
Example disi -I diskpools ls output:

Name                      Id  Type Prot Flags     Members              VHS   HDD Used / Size       SSD Used / Size
-------------------------------------------------------------------------------------------------------------------------
h40_60tb_3.2tb-ssd_128gb  1   G    +2d: SDH---I-- 2-4                  1      196T /  201T (97%  )     0 /     0 (n/a  )
                                   1n
h40_60tb_3.2tb-           2   D    +2d: S-----IG- 1-4:bay3,6,9,12,15   -       66T /   69T (95%  )     0 /     0 (n/a  )
ssd_128gb:2                        1n
h40_60tb_3.2tb-           3   D    +2d: S-----IG- 1-4:bay4,7,10,13,16  -       65T /   66T (99%  )     0 /     0 (n/a  )
ssd_128gb:3                        1n
h40_60tb_3.2tb-           4   D    +2d: S-----IG- 1-4:bay5,8,11,14,17  -       65T /   66T (98%  )     0 /     0 (n/a  )
ssd_128gb:4                        1n
 
-------------------------------------------------------------------------------------------------------------------------
Unprovisioned drives: none
Draining drives: none
Type: D = Disk pool, G = Group, P = Policy, T = Tier, E = Empty Group or Tier
Flags: S = System, H = VHS Hide Spare, D = VHS Deny Writes,
       T = Spillover Target, M = Manual Group, E = Evacuate Pool,
       I = Force 8k inodes, R = Data Reduce, G = Gna Disabled


From the output above, diskpool 3 and 4 are listed as follows:

h40_60tb_3.2tb- 3 D +2d: S-----IG- 1-4:bay4,7,10,13,16 - 65T / 66T (99% ) 0 / 0 (n/a ) ssd_128gb:3 1n
h40_60tb_3.2tb- 4 D +2d: S-----IG- 1-4:bay5,8,11,14,17 - 65T / 66T (98% ) 0 / 0 (n/a ) ssd_128gb:4 1n

 

 

Resolution:

To find which drive on a bay belongs to a diskpool, follow these steps:

  1. Run the `disi -I diskpools command to list all diskpools. 
  2. Look for the diskpool that contains the bay number of the drive you want to check.
  3. For example, to check drive Bay C1, look for the diskpool that contains bay numbers 4, 7, 10, 13, and 16. 
  4. Check the disk pool ID and name and note the bay numbers associated with it.
disi -I diskpools ls

In the output, the Smart failed drives belong to Bay 10 and Bay 11, which are part of diskpools 3 and 4.

h40_60tb_3.2tb- 3 D +2d: S-----IG- 1-4:bay4,7,10,13,16 - 65T / 66T (99% ) 0 / 0 (n/a ) ssd_128gb:3 1n
h40_60tb_3.2tb- 4 D +2d: S-----IG- 1-4:bay5,8,11,14,17 - 65T / 66T (98% ) 0 / 0 (n/a ) ssd_128gb:4 1n

Therefore, the drives in Bay C1 and Bay C2 belong to diskpools 3 and 4.

Affected Products

PowerScale OneFS
Article Properties
Article Number: 000291273
Article Type: How To
Last Modified: 13 May 2025
Version:  2
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