HP 3PAR InForm OS 3.1.1 MU1 Release Notes

• Policy zero_detect enabled on a Thin Provisioned Virtual Volume
• A host uses any of the following methods to write 16KB page aligned zeros to the TPVV:
Host issuing SCSI WRITE command◦
◦ Host issuing SCSI WRITE_SAME command (for example, ESX hosts use SCSI WRITE_SAME
when using the VAAI plugin)
• Workaround — To avoid this issue, the TPVV must be kept at the default setting of tp_bzero
policy. In cases where the policy is set to no_tp_bzero, the policy should be changed back
to tp_bzero immediately. In addition, any new volume creation should be set to the default
policy of tp_bzero. Use the CLI command showvv –pol to determine the current policy on
virtual volumes.
32-Bit Libraries Needed for 64-Bit Red Hat Enterprise Linux 6.1 to Run a CLI Client
(Bug 63679)
The 64-bit OS version of Red Hat Enterprise Linux 6.1 (RHEL) may require the installation of
compatible 32-bit libraries prior to installing this CLI client patch. The CLI installer is a 32-bit linux
binary created by InstallAnywhere, which assumes the necessary 32-bit compatibility libraries are
installed. Listed below are two Workaround options:
• Workaround — During the RHEL 6.1 64-bit system installation, include the Compatibility
Libraries when you customize the software to be installed on the system.
• Workaround — If the RHEL 6.1 64-bit system is already installed and the 32-bit libraries were
not included, then manually install the following 32-bit rpm packages: glibc, libXext and
libXtst. The rpm packages can be found on the RHEL install CD in the Packages directory.
32-Bit Library Example:
# rpm -Uvh libXau-1.0.5-1.el6.i686.rpm libxcb-1.5-1.el6.i686.rpm
libX11-1.3-2.el6.i686.rpm nss-softokn-freebl-3.12.9-3.el6.i686.rpm
glibc-2.12-1.25.el6.i686.rpm libXi-1.3-3.el6.i686.rpm
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 3.1.1.
Issues Preventing Downgrades from InForm OS release 3.1.1 to InForm OS release 2.3.1
These issues will prevent an HP 3PAR Storage System from downgrading from InForm OS release
3.1.1 to InForm OS release 2.3.1.
• Read/Write snapshots with zero detect policy - InForm OS 2.3.1 I/O code paths do not support
Read/Write snapshots on which zero detect or write-same-zero driven space optimization
has been performed. Before downgrading from InForm OS 3.1.1 to InForm OS 2.31, you
must remove all Read/Write snapshots that have zero detect policy enabled or that have
space optimization exception entries created by zero detect or write-same-zero.
• Users with Extended Roles - InForm OS releases prior to 3.1.1 do not support the users with
extended roles features. Before downgrading from InForm OS 3.1.1, you must remove all
users with extended roles.
• Read/Write Snapshots admitted to Remote Copy Groups - If read/write snapshots are admitted
to Remote Copy groups in InForm OS 3.1.1, downgrades to InForm OS 2.3.1 are not allowed.
18 HP 3PAR InForm OS 3.1.1 GA Release Notes