[OpenIndiana-discuss] Only one SSD detected on expander
Roy Sigurd Karlsbakk
roy at karlsbakk.net
Wed Oct 17 16:57:04 UTC 2012
make that smartctl -i …
you may have to add -d sat to that
roy
----- Opprinnelig melding -----
> it'd be interesting to see what WWN smartctl -l would report from
> these. I've worked with SATA SSDs in similar setups, but never seen
> them reported with the same WWN
>
> roy
>
> ----- Opprinnelig melding -----
> > Ah, I see now. Yes, all the drives report the same LU WWN Device Id
> > in
> > smartctl, and I see the same constant WWN reported online (for
> > example,
> > http://blog.gmane.org/gmane.linux.utilities.smartmontools.database/page=7).
> > I'll see what Samsung has to say.
> >
> > Thanks! This at least gives me more to work from.
> >
> > -Scott
> >
> >
> > On Oct 17, 2012, at 10:13 AM, Rich <rercola at acm.jhu.edu> wrote:
> >
> > > SATA devices are not required to provide a WWN - I would guess
> > > that
> > > they're providing the same WWN, and as a result, your SAS devices
> > > are
> > > becoming sad.
> > >
> > > If you could tell the expander(s) to ignore that and assign one,
> > > that'd be neat. If there's a firmware update to fix it, even
> > > better.
> > > If you want to shell out for SAS -> SATA interposers, that would
> > > probably also solve it, though I can't swear to anything, but
> > > that'd
> > > probably be more expensive than returning + replacing the SSDs.
> > >
> > > Don't know. If it were me, I'd complain to Samsung support and see
> > > what you got back.
> > >
> > > - Rich
> > >
> > > On Wed, Oct 17, 2012 at 11:13 AM, Scott Marcy <oi at mscott.org>
> > > wrote:
> > >> 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 <mscott at 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
> > >>> <bfriesen at 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
> > >>>> bfriesen at simple.dallas.tx.us,
> > >>>> http://www.simplesystems.org/users/bfriesen/
> > >>>> GraphicsMagick Maintainer, http://www.GraphicsMagick.org/
> > >>>>
> > >>>> _______________________________________________
> > >>>> OpenIndiana-discuss mailing list
> > >>>> OpenIndiana-discuss at openindiana.org
> > >>>> http://openindiana.org/mailman/listinfo/openindiana-discuss
> > >>>
> > >>
> > >> _______________________________________________
> > >> OpenIndiana-discuss mailing list
> > >> OpenIndiana-discuss at openindiana.org
> > >> http://openindiana.org/mailman/listinfo/openindiana-discuss
> > >
> > > _______________________________________________
> > > OpenIndiana-discuss mailing list
> > > OpenIndiana-discuss at openindiana.org
> > > http://openindiana.org/mailman/listinfo/openindiana-discuss
> >
> > --
> > “It is in the admission of ignorance and the admission of
> > uncertainty
> > that there is a hope for the continuous motion of human beings in
> > some
> > direction that doesn't get confined, permanently blocked, as it has
> > so
> > many times before in various periods in the history of man.”
> > - Richard P. Feynman
> >
> >
> > _______________________________________________
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> > OpenIndiana-discuss at openindiana.org
> > http://openindiana.org/mailman/listinfo/openindiana-discuss
>
> --
> Vennlige hilsener / Best regards
>
> roy
> --
> Roy Sigurd Karlsbakk
> (+47) 98013356
> roy at karlsbakk.net
> http://blogg.karlsbakk.net/
> GPG Public key: http://karlsbakk.net/roysigurdkarlsbakk.pubkey.txt
> --
> I all pedagogikk er det essensielt at pensum presenteres
> intelligibelt. Det er et elementært imperativ for alle pedagoger å
> unngå eksessiv anvendelse av idiomer med xenotyp etymologi. I de
> fleste tilfeller eksisterer adekvate og relevante synonymer på norsk.
>
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--
Vennlige hilsener / Best regards
roy
--
Roy Sigurd Karlsbakk
(+47) 98013356
roy at karlsbakk.net
http://blogg.karlsbakk.net/
GPG Public key: http://karlsbakk.net/roysigurdkarlsbakk.pubkey.txt
--
I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ for alle pedagoger å unngå eksessiv anvendelse av idiomer med xenotyp etymologi. I de fleste tilfeller eksisterer adekvate og relevante synonymer på norsk.
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