This section describes how to disable multipathing on a
Solaris host.
By default, multipathing is always enabled.
To disable multipathing on a Solaris host, use the following
steps:
- Open the /kernel/drv/iscsi.conf file.
- Set the mpxio-disable parameter
to no.
mpxio-disable=”no”
- Reboot the system.
reboot --- -r
The
-r option is the boot argument for reconfiguration boot. The system
searches all attached hardware devices and configures the logical
namespace in /dev.
- Use the format command to find the device. If you have
two paths for the same LUN, you see output like the following example:
c5t3d0 <IBM-2145-0000 cyl 5118 alt 2 hd 32 sec 64>
/iscsi/disk@0000iqn.1986-03.com.ibm%3A2145.nilgir.dvt1105980001,0
c5t4d0 <IBM-2145-0000 cyl 5118 alt 2 hd 32 sec 64>
/iscsi/disk@0000iqn.1986-03.com.ibm%3A2145.nilgir.dvt1109120001,0
The
output shows that the targets are different for both paths, but they
refer to the same LUN.
Note: The SCSI Inquiry command
is available under the format command. For
iSCSI support, you cannot enable nor disable multipathing on a per
device basis.