[SunHELP] SunHELP Digest, Vol 86, Issue 3

[David Strom]

I have notes on configuring Solaris 10 for our old CX500, now using a 
NS-120 which includes a CX-120, I believe.

In /kernel/drv/fp.conf, I have this line:

mpxio-disable="yes";

So, to use PowerPath (we are), it would seem you should be disabling 
mpxio in that file.

HTH.

--
David Strom

On 9/28/2012 1:00 PM, sunhelp-request at sunhelp.org wrote:
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> Today's Topics:
>
>     1. MPxIO vs EMC Powerpath (Richie)
>     2. Re: MPxIO vs EMC Powerpath (William Enestvedt)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 28 Sep 2012 11:08:26 -0400
> From: Richie <listmail at triad.rr.com>
> To: sunhelp at sunhelp.org
> Subject: [SunHELP] MPxIO vs EMC Powerpath
> Message-ID: <5065BD6A.4000201 at triad.rr.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> I am performing fresh install of Solaris on old hardware.  Running
> Solaris 10 update 10 + 09/20/12 Solaris 10 Recommended.  Host is SunFire
> 4800 attached to CX300 and has 3 raids pointed at it.
>
> I installed EMC Powerpath like always, but after a reboot I took note of
> a message in the kernel logs.  No manual changes were made.
> Sep 26 14:42:13 sf4800 PowerPath: [ID 702911 daemon.notice] MPxIO is
> enabled for clariion storage arrays, switching off PowerPath path
> management for clariion.
>
> This is telling me that MPxIO is enabled but `format` output should
> probably only list one path right?  Maybe it's not fully enabled?  I am
> not familiar with MPxIO, but I'm willing to give MPxIO a go if there's
> no real reason to use Powerpath over it.
>
> Note: All of our dev systems are using ZFS now so technically this will
> only be useful on the SAN luns that are still using UFS.
>
> This is reordered the output of `format` command, I put them into groups
> because there is a second path of type unknown (which is also reported
> offline in dmesg)
> AVAILABLE DISK SELECTIONS:
>          0. c0t0d0 <SUN36G cyl 24620 alt 2 hd 27 sec 107>
>             /ssm at 0,0/pci at 18,600000/pci at 1/scsi at 2/sd at 0,0
>          4. c2t0d0 <SUN36G cyl 24620 alt 2 hd 27 sec 107>
>             /ssm at 0,0/pci at 1c,600000/pci at 1/scsi at 2/sd at 0,0
>
>          3. c1t500601691020A09Ed2 <DGC-RAID5-0219 cyl 51198 alt 2 hd 256
> sec 16>
> /ssm at 0,0/pci at 19,600000/fibre-channel at 1/fp at 0,0/ssd at w500601691020a09e,2
>          7. c3t500601611020A09Ed2 <drive type unknown>
> /ssm at 0,0/pci at 1d,600000/fibre-channel at 1/fp at 0,0/ssd at w500601611020a09e,2
>
>          5. c3t500601611020A09Ed0 <DGC-RAID5-0207 cyl 65533 alt 2 hd 128
> sec 134>
> /ssm at 0,0/pci at 1d,600000/fibre-channel at 1/fp at 0,0/ssd at w500601611020a09e,0
>          1. c1t500601691020A09Ed0 <drive type unknown>
> /ssm at 0,0/pci at 19,600000/fibre-channel at 1/fp at 0,0/ssd at w500601691020a09e,0
>
>          6. c3t500601611020A09Ed1 <DGC-RAID5-0219 cyl 65533 alt 2 hd 8
> sec 2147>
> /ssm at 0,0/pci at 1d,600000/fibre-channel at 1/fp at 0,0/ssd at w500601611020a09e,1
>          2. c1t500601691020A09Ed1 <drive type unknown>
> /ssm at 0,0/pci at 19,600000/fibre-channel at 1/fp at 0,0/ssd at w500601691020a09e,1
>
>
> # grep '^mpxio-disable' /kernel/drv/*
> /kernel/drv/fp.conf:mpxio-disable="yes";
> /kernel/drv/iscsi.conf:mpxio-disable="no";
> /kernel/drv/mpt.conf:mpxio-disable="yes";
> /kernel/drv/mpt_sas.conf:mpxio-disable="no";
>
>
> TIA for any information.
>
>
> ------------------------------
>
> Message: 2
> Date: Fri, 28 Sep 2012 12:38:24 -0400
> From: "William Enestvedt" <William.Enestvedt at jwu.edu>
> To: "The SunHELP List" <sunhelp at sunhelp.org>
> Subject: Re: [SunHELP] MPxIO vs EMC Powerpath
> Message-ID:
> 	<3B56498F4FF85141BD9A02AAC44FE7CF04ACF478 at pvdexc04a.jwu.edu>
> Content-Type: text/plain; charset="us-ascii"
>
> If memory serves, you toggle multipathing in scsi_vhci.conf once for
> those 36GB drives on the internal chain, and then again for FC drives --
> that is, SAN LUNs -- attached to your HBA(s).
>
>     Did you do that?
>
> - Will
> --
> Will Enestvedt
>
>
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> End of SunHELP Digest, Vol 86, Issue 3
> **************************************