I'm curious if anyone has any experiences using Linux hosts on Fiber Channel SAN with multipathed HBAs. Specifically I'd like to hear about: 1) Do you use in-kernel DM-MPIO (http://christophe.varoqui.free.fr/) or a vendor-provided solution (eg. Veritas dmp)? What kinds of issues, problems, have you had with either? 2) What HBAs do you use (Qlogic, Emulex)? Any driver issues or issues with vendor provided tools? 3) What kind of backend storage are you connecting to (EMC Clariion, EMC Symmetrix, Hitachi and/or Netapp are of particular interest) 4) As a wildcard, any experience with DM-MPIO over iSCSI rather than FC?
I'm in an environment with a fairly sizeable multiple vendor SAN with primarily Solaris and Wintel hosts. On both Wintel and Solaris, Veritas DMP (and VxVM) are used extensively. So there is some advantage in having a common toolkit. For Solaris, Veritas is mature and common place and there have been stability issues in the past with Solaris' kernel MPXIO. We use primarily Sun-branded QLogic drivers with Leadville HBA drivers (which is what ships with Solaris) and Veritas layered on top. On the Wintel, side it's Emulex HBAs, Windows drivers, with Veritas layered on top. I'm leaning towards recommending sticking with Linux native DM-MPIO for several reasons, but am curious if anyone has had any interesting experiences to relay. _______________________________________________ General mailing list [email protected] http://mail.brlug.net/mailman/listinfo/general_brlug.net
