On Jan 7, 2013, at 1:20 PM, Marion Hakanson <hakan...@ohsu.edu> wrote:
> Greetings, > > We're trying out a new JBOD here. Multipath (mpxio) is not working, > and we could use some feedback and/or troubleshooting advice. Sometimes the mpxio detection doesn't work properly. You can try to whitelist them, https://www.illumos.org/issues/644 -- richard > > The OS is oi151a7, running on an existing server with a 54TB pool > of internal drives. I believe the server hardware is not relevant > to the JBOD issue, although the internal drives do appear to the > OS with multipath device names (despite the fact that these > internal drives are cabled up in a single-path configuration). If > anything, this does confirm that multipath is enabled in mpt_sas.conf > via the mpxio-disable="no" directive (internal HBA's are LSI SAS, > 2x 9201-16i and 1x 9211-8i). > > The JBOD is a SuperMicro 847E26-RJBOD1, with the front backplane > daisy-chained to the rear backplane (both expanders). Each of the two > expander chains is connected to one port of an LSI SAS 9200-8e HBA. So > far, all this hardware has appeared as working for others and well-supported, > and this 9200-8e is running the -IT firmware, version 15.0.0.0. > > The drives are 40x of the WD4001FYYG SAS 4TB variety, firmware VR02. > The spot-checks I've done so far seem to show that both device instances > of a drive show up in "prtconf -Dv" with identical serial numbers and > identical "devid" and "guid" values, so I'm not sure what might be > missing to allow mpxio to recognize them as the same device. > > Has anyone out there got this type of hardware working? In a multipath > configuration? Suggestions on mdb or dtrace code I can use to debug? > Are there "secrets" to the internal daisy-chain cabling that our vendor > is not aware of? > > Thanks and regards, > > Marion > > > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss -- richard.ell...@richardelling.com +1-760-896-4422
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