3PAR InForm OS 2.3.1 MU4 Release Notes (QL226-96261, September 2011)

Workaround
Resetting the storage system fibre channel port using the controlport rst <n:s:p> command
restores all of the resources of the port.
Internally Generated Host ID Returned by Host Explorer (Bug 62212)
The host ID shown by the CLI showhost -agent command incorrectly shows the internally generated
host ID from the storage system and not the one reported by the Host Explorer running on the host.
Workaround
Consult Host Explorer for the appropriate ID.
CIM Server Error Passing Maximum Length Virtual Volume Name (Bug 55445)
The virtual volume buffer in apilib is 1 byte shorter when it should be 32 bytes including 1 byte for
the null terminator. A 31 byte long virtual volume name causes cimserver to crash.
Workaround
Use virtual volume names of 30 bytes long or shorter to avoid this problem. Use the setvv –name
<new_name> vvname command to rename a virtual volumes over 31 bytes long.
Physical Copy Issue with Larger Destination Volume Size (Bug 55681)
The PblkRemain field describes how many physical blocks still remain to be copied from the parent
volume during the physical copy process. The number of blocks should always be positive. This bug
occurs when using a larger size destination volume than parent volume. The value of PblkRemain
is calculated using the size of the parent volume rather than the size of the destination volume.
Workaround
Use parent and destination volumes of the same size when creating physical copies.
4Gb/s 2-Port adapter Issue
The 4Gb/s 2-port Fibre Channel Adapter firmware does not detect a loss of sync when the host reboots
and has older adapters (ex: QLA2342) that do not turn off the laser.
Workaround
None.
Downgrade Issues
The following are downgrade issues for InForm OS release 2.3.1 MU2.
Issues Preventing Downgrades
These issues will prevent a storage system from downgrading from InForm OS release 2.3.1 MU2 to
2.2.4. (These issues do not apply to a downgrade from 2.3.1 MU2 to 2.3.1.)
• Dual SD Space - Thin Provisioned virtual volumes can have two Snap Data (SD) volumes in 2.3.1
and 2.3.1 MU2. This is not a supported feature in previous InForm releases. Prior to a downgrade,
dual SD TPVVs must be converted to single SD TPVVs by removing all of the snapshots for those
TPVVs.
• Raid Multi-Parity (MP) - Raid MP was not supported in InForm OS releases prior to 2.3.1, therefore
any Raid MP Logical Disks (LDs) must be tuned to a supported RAID type or removed prior to
downgrade.
• SD Reclaim Space - SD Reclamation is not supported by InForm OS releases prior to 2.3.1. Before
a downgrade, SD volumes that have its space reclaimed must be removed. If that SD is used by
snapshots only, then all of its snapshots must be deleted so that SD can be freed. If that SD space
is used by the TPVV itself, then that TPVV would need to be copied over to a new single SD TPVV.
After the copy operation completed, the original TPVV can be removed.
HP 3PAR InForm Operating System Release Notes 9