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HP 3PAR VMware ESX Implementation Guide

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When the warning limit is reached, the HP 3PAR StoreServ Storage sends a soft threshold error
asc/q: 0x38/0x7 and ESX continues to write.
InServ debug log:
1 Debug Host error undefined Port 1:5:2 -- SCSI status 0x02 (Check
condition) Host:sqa-dl380g5-14-esx5 (WWN 2101001B32A4BA98) LUN:22 LUN
WWN:50002ac00264011c VV:0 CDB:280000AB082000000800 (Read10) Skey:0x06 (Unit attention)
asc/q:0x38/07 (Thin provisioning soft threshold reached) VVstat:0x00 (TE_PASS
-- Success) after 0.000s (Abort source unknown) toterr:74882, lunerr:2
# showalert
Id: 193
State: New
Message Code: 0x0270001
Time: 2011-07-13 16:12:15 PDT
Severity: Informational
Type: TP VV allocation size warning
Message: Thin provisioned VV nospace1 has reached allocation
warning of 60G (60% of 100G)
When the HP 3PAR StoreServ Storage runs out of disk space, a hard permanent error asc/q:
0x27/0x7 is sent. Use showspace, showvv -r, and showalert to see the warning and space
usage. The ESX responds by stunning the VM.
InServ debug log:
1 Debug Host error undefined Port 1:5:2 -- SCSI status 0x02 (Check
condition) Host:sqa-dl380g5-14-esx5 (WWN 2101001B32A4BA98) LUN:22 LUN
WWN:50002ac00264011c VV:612 CDB:2A00005D6CC800040000 (Write10) Skey:0x07 (Data protect)
asc/q:0x27/07 (Space allocation failed write protect) VVstat:0x41 (VV_ADM_NO_R5
-- No space left on snap data volume) after 0.302s (Abort source unknown)
toterr:74886, lunerr:3
The following figure shows the VM warning displayed on the vSphere with the Retry and Cancel
options.
Figure 20 Virtual Machine Message — Retry and Cancel options
Additional New Primitives Support on ESXi 5.x
HP 3PAR OS 3.1.1 or later supports additional new primitives, called TP LUN Reporting, where
the ESXi 5.x is notified that a given LUN is a thin provisioning LUN by enabling the TPE bits of the
READ Capacity (16) and enables the host to use features such as sending the UNMAP command
to these LUNs. The TPE bit is enabled for TPVVs and R/W snapshot of TPVV base.
ESX/ESXi 4.1, ESXi 5.x Additional Feature Considerations 53