FibrChanl-01 (fcd) B.11.31.1209 Fibre Channel Mass Storage Driver for HP-UX 11i v3 Release Notes

Table 17 HP-UX September 2007 Fixes (continued)
DescriptionDefect ID
Avoid use of /tmp file for driver dumpsSR: 8606477715
Modify FCD dump driver to support > 2TB LUNsSR: 8606466124
Known problems and limitations
This section provides a list of known problems and limitations as known to HP at time of publication.
If workarounds are available, they are included.
• CRA report shows internal failures reported during “olrad –r”
When existing cards which have been claimed in last boot are moved into the powered off
state, and are later added to the system using the olrad -A command, the OL* script of
FCD does not create special device files corresponding to the FCD cards present under the
PCI slot. Failure to create these special device files leads to the following error being reported
in the CRA phase of olrad -r, and the replacement of the current card on the system fails.
—
CRA REPORT SUMMARY: CRA encountered INTERNAL FAILURES.
Detailed CRA report is available in /var/adm/cra.log file.
CRA Error : ERROR occurred during analysis
Target slot : 11-0-2-0-0-4
--
See CR QXCR1001233122.
This issue is seen only with Superdome 2 (CB900s i4).
Corrective action:
This is a known issue and can be resolved by issuing the following insf(1M) command after
the completion of the olrad -A command:
#insf -e -C fc
Executing this command will create the necessary device special files which the FCD OL*
script did not create during the execution of olrad -A.
• Private Loop and Public Loop topology configuration support for Fibre Channel mezzanine
adapters
Private Loop and Public Loop topology configurations are not supported for Fibre Channel
mezzanine adapters on HP Integrity Blade servers in combination with the Fibre Channel (FC)
Pass Thru I/O Interconnect modules. These configurations can result in servers losing connection
to the Storage Area Network (SAN) during mezzanine adapter initialization, and SAN boot
may fail in such configurations.
It is strongly recommended that customers not use loop topology configurations for mezzanine
adapters in conjunction with FC Pass Thru I/O interconnect modules. Customers are advised
to use Point-to-Point Fabric topology configuration with mezzanine adapters.
For additional information, please refer to HP Customer Advisory Document c02985353.
• Adding a new path to a LUN seen through FibrChanl-01 (fcd) driver can cause IOs pending
with the driver for the LUN to stop for R_A_TOV period
R_A_TOV stands for Resource Allocation Time Out Value (refer to FC-FS-3 21.3.5 for details).
The default value of R_A_TOV is 10 seconds.
On an 11iv3 host, when I/Os are in progress to a LUN and a new LUN path is added, the
mass storage stack issues a “abort-task-set” SCSI Task Management request on all existing
paths to the LUN. This causes the underlying FibrChanl-01 (fcd) driver to abort all I/Os to the
Known problems and limitations 7