SUN Multiple Path
Solaris 10 does support FB SAN; but not on SCSI.
To enable it, edit the /kernel/drv/fp.conf file.
mpxio-disable="no";
Below is an example of a host which has two fibre channel controllers (c4 and c5) connected to the sam SAN, and both see the same target LUNs, of which there are four:
cfgadm -al -o show_SCSI_LUN
So, the aforementioned scsi_vhci driver sees that LUN 6000393000015463,0 is presented by two controllers. It will then make a new disk device using that device’s WWN, LUN, and other information to construct a globally-unique ID (GUID) device name and then create device entries under /dev/dsk and /dev/rdsk to represent a multipathed view:
You might notice the new controller, c6. This is a “virtual” controller implemented by scsi_vhci since making such virtual disk devices under a real physical controller would be a broken idea since, technically, there is no such physical device. Remember, this is a meta device.
To enable it, edit the /kernel/drv/fp.conf file.
mpxio-disable="no";
Below is an example of a host which has two fibre channel controllers (c4 and c5) connected to the sam SAN, and both see the same target LUNs, of which there are four:
cfgadm -al -o show_SCSI_LUN
So, the aforementioned scsi_vhci driver sees that LUN 6000393000015463,0 is presented by two controllers. It will then make a new disk device using that device’s WWN, LUN, and other information to construct a globally-unique ID (GUID) device name and then create device entries under /dev/dsk and /dev/rdsk to represent a multipathed view:
You might notice the new controller, c6. This is a “virtual” controller implemented by scsi_vhci since making such virtual disk devices under a real physical controller would be a broken idea since, technically, there is no such physical device. Remember, this is a meta device.
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