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10. Issue the essinstallcheck command from both canisters and ensure that no error is shown
before you proceed to the next step.
# essinstallcheck -N <node list>
11. Issue the following command against the affected recovery group. This command adds the new
capacity and begins re-balancing data onto the new disks.
# 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.
12. 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" on
page 31.
13. 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
recovery group
pdisk
state
--------------
------------
-----
ess3200_78E400K
e1s01
ess3200_78E400K
e1s02
declustered
array
paths
capacity
-----------
-----
--------
DA1
2
3576 GiB
DA1
2
3576 GiB
free space
FRU (type)
----------
---------------
2270 GiB
3.84TB NVMe Tie
2272 GiB
3.84TB NVMe Tie
Chapter 1. Servicing (customer tasks) 21
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