Well, I enabled multipath support with 'stmsboot -e -D mpt' and rebooted and now it seems I have two paths to what is no doubt two physical devices:
$ mpathadm list LU /dev/rdsk/c7t5002538043584D30d0s2 Total Path Count: 2 <-- Unlikely that this is correct Operational Path Count: 2 /dev/rdsk/c7t5000C5005168B2F0d0s2 Total Path Count: 1 Operational Path Count: 1 /dev/rdsk/c7t5000C5005169A612d0s2 Total Path Count: 1 Operational Path Count: 1 /dev/rdsk/c7t5000C500517042D9d0s2 Total Path Count: 1 Operational Path Count: 1 /dev/rdsk/c7t5000C5005169CC6Ad0s2 Total Path Count: 1 Operational Path Count: 1 /dev/rdsk/c7t5000C500515199BDd0s2 Total Path Count: 1 Operational Path Count: 1 /dev/rdsk/c7t5000C500513A0EFEd0s2 Total Path Count: 1 Operational Path Count: 1 $ mpathadm show LU /dev/rdsk/c7t5002538043584D30d0s2 Logical Unit: /dev/rdsk/c7t5002538043584D30d0s2 mpath-support: libmpscsi_vhci.so Vendor: ATA Product: SAMSUNG SSD 830 Revision: 3B1Q Name Type: unknown type Name: 5002538043584d30 Asymmetric: no Current Load Balance: none Logical Unit Group ID: NA Auto Failback: on Auto Probing: NA Paths: Initiator Port Name: w500605b0054819b0 Target Port Name: w5002538043584d30 Override Path: NA Path State: OK Disabled: no Initiator Port Name: w500605b0054819b0 Target Port Name: w5002538043584d30 Override Path: NA Path State: OK Disabled: no Target Ports: Name: w5002538043584d30 Relative ID: 0 And cfgadm still only shows one SSD on each expander, when I actually have two on each expander. $ cfgadm -al Ap_Id Type Receptacle Occupant Condition c6 scsi-sas connected configured unknown c6::es/ses0 ESI connected configured unknown c6::smp/expd0 smp connected configured unknown c6::w5002538043584d30,0 disk-path connected configured unknown c6::w5000c500513a0efe,0 disk-path connected configured unknown c6::w5000c5005168b2f0,0 disk-path connected configured unknown c6::w5000c5005169a612,0 disk-path connected configured unknown c6::w5000c5005169cc6a,0 disk-path connected configured unknown c6::w5000c500515199bd,0 disk-path connected configured unknown c6::w5000c500517042d9,0 disk-path connected configured unknown c8 scsi-sas connected configured unknown c8::es/ses1 ESI connected configured unknown c8::smp/expd1 smp connected configured unknown c8::w5002538043584d30,0 disk-path connected configured unknown c9 scsi-sas connected unconfigured unknown I also wonder if there might be an issue with duplicate initiator-port names: $ mpathadm list initiator-port Initiator Port: w500605b0054819b0 Initiator Port: iqn.1986-03.com.sun:01:bb4db0fbffff.507ec650,4000002a00ff Initiator Port: w500605b0054819b0 Although I'm definitely venturing outside my knowledge base here--maybe this is expected and correct. (I assume each initiator-port represents an expander, but both expanders are connected to the one HBA, one to each SFF-8087 port. Also, I do have comstar running, which I expect explains the iSCSI initiator in this list.) -Scott On Oct 17, 2012, at 8:37 AM, Scott Marcy <msc...@mscott.org> wrote: > No, multipath support is disabled. I will try enabling it with stmsboot. > > Thanks. > > -Scott > > On Oct 17, 2012, at 8:15 AM, Bob Friesenhahn <bfrie...@simple.dallas.tx.us> > wrote: > >> On Wed, 17 Oct 2012, Scott Marcy wrote: >>> >>> Note that both c6 and c8 have the exact same name for these drives. I *CAN* >>> access the two drives separately, but why on earth am I getting these >>> duplicates? This means I can only reliably access one Samsung SSD per >>> expander. >> >> Do you have multipath support enabled on this system? I assume that the >> default for OpenIndiana x86 is still that multipath support is disabled by >> default. >> >> Bob >> -- >> Bob Friesenhahn >> bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/ >> GraphicsMagick Maintainer, http://www.GraphicsMagick.org/ >> >> _______________________________________________ >> OpenIndiana-discuss mailing list >> OpenIndiana-discuss@openindiana.org >> http://openindiana.org/mailman/listinfo/openindiana-discuss > _______________________________________________ OpenIndiana-discuss mailing list OpenIndiana-discuss@openindiana.org http://openindiana.org/mailman/listinfo/openindiana-discuss