scsidisc only reports those i've attached.  That particular output was from
a different device (i.e. 5001).. my terminology is a little off.     Our SAN
admin swears it's configured correctly on the switch.



On Thu, Apr 15, 2010 at 9:38 AM, Eric R Farman <far...@us.ibm.com> wrote:

> Hi Daniel,
>
> The WWPN listed in your Q FCP outputs and that from the SCSIDISC tool are
> similar enough that I suspect they are different subchannels on the same FCP
> card, and not of your target DASD subsystem.  Are there other WWPNs listed
> in the SCSIDISC output beyond what you have sent?  If so, what does SCSIDISC
> see with them?  If not, has the switch been told about the NPIV WWPNs that
> the VM LPAR will be using (that is, those listed in Q FCP)?  What specific
> messages do you get when varying on the EDEV?
>
> One other thing...  the FCP subchannel (5000 in your example below)
> shouldn't be attached to a particular user if it is going to be used as part
> of an EDEV.  It should be free so that VM can attach it to the SYSTEM itself
> at the time the EDEV is varied online.  (The FCP can be used for multiple
> paths/LUNs at once, so in reality the FCP should be either free or attached
> to SYSTEM.)  The ATTACH 5000 TO * command would be used for a guest to use,
> such as for SCSIDISC or Linux itself configuring SCSI.
>
> Regards,
>            Eric
>
> Eric Farman
> z/VM I/O Development
> IBM Endicott, NY
>
>
>
>  From: Daniel Tate <daniel.t...@gmail.com> To: IBMVM@LISTSERV.UARK.EDU
> Date: 04/14/2010 02:40 PM Subject: z/VM not seeing storage from SAN Sent
> by: The IBM z/VM Operating System <IBMVM@LISTSERV.UARK.EDU>
> ------------------------------
>
>
>
> Disclaimer: I am a UNIX admin, working with z/VM for the first time.
> I only know basic commands and concepts, but really need to get this
> working.
>
> Our san is connected, and other LPARs can see the storage.   the CHPID
> is online.   I can attach the storage (ATTACH 5000 to *) and SET EDEV
> blahblahbah.. but when i try to vary on the storage,i get a NO PATH TO
> DEVICE error.
>
> Anyone have any ideas?
>
> SCSIDISC Reports:
> WARNING::WWPN C05076FAE3000408 Could Not be Opened
> WARNING::WWPN C05076FAE3000408 ignored
>
> Here’s the output from q fcp:
>
> q fcp
>
> 07:05:04 FCP  5000 ATTACHED TO MAINT    5000 CHPID 46
> 07:05:04      WWPN C05076FAE3000400
>
>
> q v fcp
>
> 08:27:31 FCP  5000 ON FCP   5000 CHPID 46 SUBCHANNEL = 011D
> 08:27:31      5000 DEVTYPE FCP         CHPID 46 FCP
> 08:27:31      5000 QDIO-ELIGIBLE       QIOASSIST-ELIGIBLE
> 08:27:31      WWPN C05076FAE3000400
>
> Ready; T=0.01/0.01 08:27:31
>
>
>

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