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 <[email protected]> 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 <[email protected]>
> 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
>> [email protected], http://www.simplesystems.org/users/bfriesen/
>> GraphicsMagick Maintainer, http://www.GraphicsMagick.org/
>>
>> _______________________________________________
>> OpenIndiana-discuss mailing list
>> [email protected]
>> http://openindiana.org/mailman/listinfo/openindiana-discuss
>
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