This is a bug in the mpt_sas driver. I'm not sure of the RTI date, but I believe it was scheduled to be fixed soon. I've CC'ed Dan McDonald who has been working in this area. He'll know for sure :-) -- richard
On Feb 7, 2013, at 1:20 AM, Randy S <[email protected]> wrote: > > Hi, > > Thanks for the link. I also read this page a few weeks ago and went with the > iostat -xnzY 5 command. > I think it will be difficult to determine if this is an OI issue or a > hardware issue. > I also noticed that the system responds differently depending on which cable > you remove. > Main responses being either stopping ( or becomming unresponsive) > immediately, or stopping when you plug the cable back in. > > don't really know where to look next. > > Rgds, > > Randy > > > >> From: [email protected] >> To: [email protected] >> Date: Thu, 7 Feb 2013 09:09:48 +0100 >> Subject: Re: [OpenIndiana-discuss] sas multipath >> >> -----Original message----- >> From: Randy S <[email protected]> >> Sent: Wed 06-02-2013 13:03 >> Subject: [OpenIndiana-discuss] sas multipath >> To: [email protected]; >>> >>> Hi all, >>> >>> I have a test system running with OIa7, very much ram, 2 LSI SAS 9207-4i4e >>> hba's, 1 sm jbod containing seagate 3Tb sas drives. >>> >>> I have enabled the multipathing with stmsboot and set it to use >>> logical-blocksize, since round-robin symmetric-option isn't functioning. >>> >>> During tests I can see that the system sees the two path's with mpathadm >>> and >>> simple dd tests show that all disks are all accessed at almost maximum >>> speed >>> with minimum latency according to iostat. >>> We started to test with 4 sas disks in 2 striped mirrors. >>> >>> All good, but shouldn't it be possible to pull one of the sas cables >>> without >>> any disruption to the storage, forcing it to use only one path? (this way >>> simulating a broken hba). >>> When we do this, the whole system grinds to a screeching halt, being almost >>> unresponsive. >>> >>> What am I doing wrong. Maybe somebody can point in in the right direction >>> to >>> troubleshoot. >>> >>> Rgrds, >>> >>> Randy >>> >>> >>> >>> >>> >>> >>> _______________________________________________ >>> OpenIndiana-discuss mailing list >>> [email protected] >>> http://openindiana.org/mailman/listinfo/openindiana-discuss >>> >> >> Hi Randy, >> >> we set up sas multipath here with 151a7 (Supermicro JBOD, LSI SAS >> Controller). We tested failover as well. It worked, almost: after >> disconnecting one cable everything continued to work, BUT when reconnecting >> the cable, the system stopped working until rebooted. >> >> We didn't find the reason for this, so far. >> >> If you are laying with MPXIO you might take a look into vhci_stat: >> (http://southbrain.com/south/software/vhci-stat.html) >> >> >> cu >> >> Carsten >> >> _______________________________________________ >> OpenIndiana-discuss mailing list >> [email protected] >> http://openindiana.org/mailman/listinfo/openindiana-discuss > > > > > _______________________________________________ > OpenIndiana-discuss mailing list > [email protected] > http://openindiana.org/mailman/listinfo/openindiana-discuss -- [email protected] +1-760-896-4422 _______________________________________________ OpenIndiana-discuss mailing list [email protected] http://openindiana.org/mailman/listinfo/openindiana-discuss
