CLI Guide

Table Of Contents
Description
An active meta-volume with an inconsistent on-disk state can lead to a data unavailability (DU) during NDU.
Best practice is to upgrade immediately after passing this meta-volume consistency check.
NOTE: If any errors are reported, do not proceed with the upgrade, and contact Dell EMC Customer Support.
The format of the command is:
meta-volume verify-on-disk-consistency -style long --meta-volume meta-volume-name>
The command takes 10-20 minutes to complete.
Check the report in the log file saved at: /tmp/logfilename. The log file reports mismatches between meta-volume RAID 1
legs.
If mismatches are detected, run the command again using the format:
meta-volume verify-on-disk-consistency -style slow --meta-volume meta-volume-name>
This version of the command takes an hour to complete.
NOTE: Running this command is recommended before upgrading from Release 5.0 or later.
Example
Verify the specified meta-volume is consistent using the slow style:
VPlexcli:/> meta-volume verify-on-disk-consistency --style slow --meta-volume
meta_cluster1
Doing a slow consistency check on meta-volume '/clusters/cluster-1/system-volumes/
meta_cluster1' for slots [0,32000).
Scanning offsets [0,32000)
.........................................................................................
.............................
.........................................................................................
..............................
...............................................................
0 mismatches detected
Discover/display inconsistencies on a meta-volume using the long style:
VPlexcli:/clusters/cluster-2/system-volumes> meta-volume verify-on-disk-consistency -
c cluster-2 --style long
Doing a long consistency check on meta-volume '/clusters/cluster-2/system-volumes/
Cluster2_Meta_DGC_Vmax_mirror' for slots [0,32000).
Meta-volume is not consistent.
See /tmp/validatemeta.log for details of the inconsistencies.
See also
meta-volume create
240
Commands