HP Emulex Adapters Release Notes

SCSI reset status incorrectly reported in /var/log/messages
An SLES 11 SP1 x64 system with an lpfc driver 8.5.3.44 can incorrectly report SCSI resets status
in /var/log/messages similar to the following:
Aug 9 12:01:12 xyz kernel: [ 6783.419080] lpfc 0000:a1:00.0: 4:(0):0714
SCSI layer issued Bus Reset Data: x0
This message can be ignored..
SLES 10 SP3 CNA firmware download
Firmware download in SLES 10 SP3 can cause the system to hang.
When downloading firmware to the CNA in SLES 10 SP3 using OneCommand Manager or
hbacmd, the download may complete but cause the system to become unresponsive or hang.
Though the firmware download is successful, a hard reboot of the server may be required to enable
the new firmware.
ReiserFS limitation
ReiserFS file systems can exhibit unexpected behavior under heavy loads. HP recommends to use
either the xfs or ext3 file system. For up-to-date recommendations, see the Novell website:
http://support.novell.com/
High availability recommendation
HP recommends to use the ext3 file system in high availability (HA) environments. For information
on how to use other Linux file systems in an HA environment, see SLES 11 Administration Guide,
available at the Novell website http://www.novell.com/documentation/sles11 and the Red Hat
Deployment Guide, available at the Red Hat website http://www.redhat.com.
For information on the differences between ext2 and ext3, see the operating system
documentation.
MSA2000 notes
For the MSA2000 family of disk arrays:
• The minimum required firmware is J200P24-01.
• Creating virtual disks (vdisks) online or offline without volumes during the virtual disk creation
process is not supported. You must create at least one volume during the virtual disk creation.
• MultiPulse is not supported. For information about multipathing support, see the HP Device
Mapper documentation.
MultiPulse notes
• The Emulex MultiPulse 2.2.22, 2.2.38, 2.2.39, and 2.2.44 drivers support active/active
storage arrays only.
• If using MultiPulse 2.2.x, you can have a maximum of eight physical paths to a LUN. More
than eight paths can cause a failure.
• MultiPulse can coexist with multipathing products such as the Emulex failover driver and Secure
Path. However, MultiPulse works only with Emulex-based HBAs; it does not configure multiple
paths for other HBAs in the system.
LUN discovery
Because the order in which a switch reports Fibre Channel ports to a name server can vary, the
order in which LUNs are discovered can vary between system boots.
HP recommends to use the udev utility to ensure that the name of a device does not change
between system boots. For more information, see the udev website:
Important notes and workarounds 11