IBM Elastic Storage System 5147-102, Service Manual

13. Execute the next command on the impacted recovery group. This command starts re-balancing data

onto the new discs and adds the additional capacity.

# mmvdisk recoverygroup resize --recovery-group <recoverygroup name>

Example:

# date; mmvdisk recoverygroup resize --recovery-group ess3200_78E400K

Mon Aug 16 11:12:50 MST 2021

mmvdisk: Obtaining pdisk information for recovery group 'ess3200_78E400K'.

mmvdisk: Analyzing disk topology for node 'ess3200rw3a-hs.gpfs.ess'.

mmvdisk: Analyzing disk topology for node 'ess3200rw3b-hs.gpfs.ess'.

mmvdisk: Validating existing pdisk locations for recovery group 'ess3200_78E400K'.

mmvdisk: The resized server disk topology is 'ESS 3200 FN1 24 NVMe'.

mmvdisk: Validating declustered arrays for recovery group 'ess3200_78E400K'.

mmvdisk: Adding new pdisks to recovery group 'ess3200_78E400K'.

mmvdisk: Updating declustered array attributes for recovery group 'ess3200_78E400K'.

mmvdisk: Successfully resized recovery group 'ess3200_78E400K'.

Note: Use the 

mmvdisk recoverygroup list

 command to determine the proper recovery group.

14. Update the node class server configuration for 24 drives by issuing the following command:

# mmvdisk server configure --update --node-class <node class name> --recycle 1

Example:

date; mmvdisk server configure --update --node-class ess3200_x86_64_mmvdisk_78E400K --

recycle 1

Mon Aug 16 11:27:16 MST 2021

mmvdisk: Recording pre-conversion cluster configuration in /var/mmfs/tmp/

mmvdisk.configure.before.20210816

mmvdisk: Checking resources for specified nodes.

mmvdisk: Node class 'ess3200_x86_64_mmvdisk_78E400K' has a shared recovery group disk 

topology.

mmvdisk: Using 'ess3200.shared' RG configuration for topology 'ESS 3200 FN1 24 NVMe'.

mmvdisk: Updating configuration for node class 'ess3200_x86_64_mmvdisk_78E400K' (recovery 

group 'ess3200_78E400K').

mmvdisk: Recording post-conversion cluster configuration in /var/mmfs/tmp/

mmvdisk.configure.after.20210816

mmvdisk: Restarting GPFS daemon on node 'ess3200rw3a-hs.gpfs.ess'.

mmvdisk: Restarting GPFS daemon on node 'ess3200rw3b-hs.gpfs.ess'.

Important: This command automatically stops and restarts GPFS on each canister server in a serial

fashion by using the --recycle 1 option. If you do not want to stop and restart GPFS, the server

can be configured without the --recycle 1 option. The customer can restart GPFS manually on each

canister server by the process at each step. For more information about manually restarting GPFS,

see Manually restarting GPFS on the Enterprise Storage Server 3500 canisters example.

15. Verify that the newly added space is available to the system.

# date; mmvdisk pdisk list -–recovery-group <recovery group name>

Example:

# date; mmvdisk pdisk list --recovery-group ess3200_78E400K

Mon Aug 16 13:57:49 MST 2021

                              declustered

recovery group  pdisk            array     paths  capacity  free space  FRU (type)       

state

--------------  ------------  -----------  -----  --------  ----------  ---------------  

-----

ess3200_78E400K  e1s01         DA1              2  3576 GiB    2270 GiB  3.84TB NVMe Tie  ok

ess3200_78E400K  e1s02         DA1              2  3576 GiB    2272 GiB  3.84TB NVMe Tie  ok

ess3200_78E400K  e1s03         DA1              2  3576 GiB    2272 GiB  3.84TB NVMe Tie  ok

ess3200_78E400K  e1s04         DA1              2  3576 GiB    2268 GiB  3.84TB NVMe Tie  ok

ess3200_78E400K  e1s05         DA1              2  3576 GiB    2268 GiB  3.84TB NVMe Tie  ok

ess3200_78E400K  e1s06         DA1              2  3576 GiB    2268 GiB  3.84TB NVMe Tie  ok

ess3200_78E400K  e1s07         DA1              2  3576 GiB    2270 GiB  3.84TB NVMe Tie  ok

ess3200_78E400K  e1s08         DA1              2  3576 GiB    2270 GiB  3.84TB NVMe Tie  ok

ess3200_78E400K  e1s09         DA1              2  3576 GiB    2272 GiB  3.84TB NVMe Tie  ok

ess3200_78E400K  e1s10         DA1              2  3576 GiB    2270 GiB  3.84TB NVMe Tie  ok

ess3200_78E400K  e1s11         DA1              2  3576 GiB    2268 GiB  3.84TB NVMe Tie  ok

ess3200_78E400K  e1s12         DA1              2  3576 GiB    2270 GiB  3.84TB NVMe Tie  ok

ess3200_78E400K  e1s13         DA1              2  3576 GiB    2270 GiB  3.84TB NVMe Tie  ok

ess3200_78E400K  e1s14         DA1              2  3576 GiB    2270 GiB  3.84TB NVMe Tie  ok

ess3200_78E400K  e1s15         DA1              2  3576 GiB    2274 GiB  3.84TB NVMe Tie  ok

ess3200_78E400K  e1s16         DA1              2  3576 GiB    2272 GiB  3.84TB NVMe Tie  ok

ess3200_78E400K  e1s17         DA1              2  3576 GiB    2270 GiB  3.84TB NVMe Tie  ok

Chapter 1. Servicing (customer task)  39