QLogic OFED+ Host Software User Guide, Rev. B

F–Troubleshooting
System Administration Troubleshooting
ibsrpdm Command Hangs when Two Host Channel
Adapters are Installed but Only Unit 1 is Connected
to the Switch
If multiple infiniband adapters (unit 0 and unit 1) are installed and only unit 1 is
connected to the switch, the ibsrpdm command (to set up an SRP target) can
hang. If unit 0 is connected and unit 1 is disconnected, the problem does not
occur.
When only unit 1 is connected to the switch, use the -d option with ibsrpdm. Then,
using the output from the ibsrpdm command, echo the new target information into
/sys/class/infiniband_srp/srp-ipath1-1/add_target.
For example:
# ibsrpdm -d /dev/infiniband/umad1 -c
# echo \
id_ext=21000001ff040bf6,ioc_guid=21000001ff040bf6,dgid=fe800000000
0000021000001ff040bf6,pkey=ffff,service_id=f60b04ff01000021 >
/sys/class/infiniband_srp/srp-ipath0-1/add_target
Outdated ipath_ether Configuration Setup Generates Error
Ethernet emulation (ipath_ether) has been removed in this release, and, as a
result, an error may be seen if the user still has an alias set previously by
modprobe.conf (for example, alias eth2 ipath_ether).
When ifconfig or ifup are run, the error will look similar to this (assuming
ipath_ether was used for eth2):
eth2: error fetching interface information: Device not found
To prevent the error message, remove the following files (assuming
ipath_ether was used for eth2):
/etc/sysconfig/network-scripts/ifcfg-eth2 (for RHEL)
/etc/sysconfig/network/ifcfg-eth2 (for SLES)
QLogic recommends using the IP over InfiniBand protocol (IPoIB-CM), included in
the standard OpenFabrics software releases, as a replacement for
ipath_ether.
System Administration Troubleshooting
The following sections provide details on locating problems related to system
administration.
Broken Intermediate Link
Sometimes message traffic passes through the fabric while other traffic appears
to be blocked. In this case, MPI jobs fail to run.
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