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Hello,
Is it normal for the default cpg for a vv to change after AO is run?
Our situation: We have a two tier AO configured in Performance mode with Tier 0 SSD and Tier 1 FC. We have two corresponding cpg's set up, AO_FC_r5_Performance and AO_SSD_r5_Performance. We have three, fully provisioned volumes that were set up initially with the default cpg being AO_FC_r5_Performance. However, after AO ran the default cpg for each vv changed to AO_SSD_r5_Performance.
Model: 3PAR_7200
HP 3PAR OS version 3.2.1.426 (MU5)
After a recent OS update, we did a tunevv usr_cpg <CPG> <VV_name> and set the vv's to FC to see if the update would keep the default cpg from changning.
After the tunevv was completed:
cli% showcpg -d AO_FC_r5_Performance
----------------(MB)-----------------
----Volumes---- -Usage- ----- Usr ----- -- Snp --- -- Adm --- --- LD ---- - RC_Usage -
Id Name Warn% VVs TPVVs TDVVs Usr Snp Total Used Total Used Total Used Usr Snp Adm Usr Snp
11 AO_FC_r5_Performance - 3 0 0 3 0 6294528 6291456 0 0 0 0 18 0 0 0 0
--------------------------------------------------------------------------------------------------------------------
1 total 3 0 6294528 6291456 0 0 0 0 18 0 0 0 0
cli% showcpg -d AO_SSD_r5_Performance
--------------(MB)--------------
----Volumes---- -Usage- -- Usr --- -- Snp --- -- Adm --- --- LD ---- - RC_Usage -
Id Name Warn% VVs TPVVs TDVVs Usr Snp Total Used Total Used Total Used Usr Snp Adm Usr Snp
12 AO_SSD_r5_Performance - 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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1 total 0 0 0 0 0 0 0 0 0 0 0 0 0
cli% showvvcpg
------(MB)------ -New (MB)--
Name CPG Adm Snp Usr Adm Snp Usr
admin --- 0 0 10240 0 0 0
.srdata --- 0 0 61440 0 0 0
VMFS_Horizon_LUN1_ISO FC_r5 0 0 56320 0 0 0
VMFS_Horizon_LUN4 AO_FC_r5_Performance 0 0 2097152 0 0 0
VMFS_Horizon_LUN2 AO_FC_r5_Performance 0 0 2097152 0 0 0
VMFS_Horizon_LUN3 AO_FC_r5_Performance 0 0 2097152 0 0 0
Then, after AO ran:
cli% showcpg -d AO_FC_r5_Performance
----------------(MB)-----------------
----Volumes---- -Usage- ----- Usr ----- -- Snp --- -- Adm --- --- LD ---- - RC_Usage -
Id Name Warn% VVs TPVVs TDVVs Usr Snp Total Used Total Used Total Used Usr Snp Adm Usr Snp
11 AO_FC_r5_Performance - 0 0 0 0 0 6294528 5863936 0 0 0 0 18 0 0 0 0
--------------------------------------------------------------------------------------------------------------------
1 total 0 0 6294528 5863936 0 0 0 0 18 0 0 0 0
cli% showcpg -d AO_SSD_r5_Performance
---------------(MB)----------------
----Volumes---- -Usage- ---- Usr ---- -- Snp --- -- Adm --- --- LD ---- - RC_Usage -
Id Name Warn% VVs TPVVs TDVVs Usr Snp Total Used Total Used Total Used Usr Snp Adm Usr Snp
12 AO_SSD_r5_Performance - 3 0 0 3 0 473088 427520 0 0 0 0 2 0 0 0 0
-------------------------------------------------------------------------------------------------------------------
1 total 3 0 473088 427520 0 0 0 0 2 0 0 0 0
cli% showvvcpg
------(MB)------ -New (MB)--
Name CPG Adm Snp Usr Adm Snp Usr
admin --- 0 0 10240 0 0 0
.srdata --- 0 0 61440 0 0 0
VMFS_Horizon_LUN1_ISO FC_r5 0 0 56320 0 0 0
VMFS_Horizon_LUN4 AO_FC_r5_Performance 0 0 1959552 0 0 0
VMFS_Horizon_LUN4 AO_SSD_r5_Performance 0 0 137600 0 0 0
VMFS_Horizon_LUN2 AO_FC_r5_Performance 0 0 1958912 0 0 0
VMFS_Horizon_LUN2 AO_SSD_r5_Performance 0 0 138240 0 0 0
VMFS_Horizon_LUN3 AO_FC_r5_Performance 0 0 1945472 0 0 0
VMFS_Horizon_LUN3 AO_SSD_r5_Performance 0 0 151680 0 0 0
According to HPE, the system is working as designed. Should the default cpg be changing? Is keeping the default cpg as SSD okay? We have a 3PAR 8400 with a newer OS set up in a similar configuration and have not had he default cpgs change after AO runs.
Thanks.
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