Topic
12 replies Latest Post - ‏2013-11-12T15:21:22Z by chriscanto
robinsguk
robinsguk
31 Posts
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Pinned topic SVC FC to V7000 shows Inactive

‏2013-10-24T11:56:18Z |

Hello,

 

On SVC (6.2) I'm looking at Network->Fibre Channel-> All nodes, storage systems and hosts

 

I have two FC ports from a V7000 (6.4.1) zoned to the SVC but the SVC shows the connections as Inactive.

On the V7000 I can see the WWNs of the SVC and they are shoiwng as Active.

I know the connection is OK because I have used Migrate to Image Mode Disk to migrate LUNs from the SVC to the V7000.

I now want to set up a remote copy partnership but SVC says there's No Candidate.

 

Any suggestions why V7000 see's the FC connections to SVC as Active but SVC see's them as Inactive?

Thanks

 

Glenn

Updated on 2013-10-24T11:56:31Z at 2013-10-24T11:56:31Z by robinsguk
  • chriscanto
    chriscanto
    271 Posts
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    Re: SVC FC to V7000 shows Inactive

    ‏2013-10-24T14:09:29Z  in response to robinsguk

    To setup a partnership the two systems need to be in the same "layer".  If you've previously virtualized one system behind the other then they must have been in different layers at that point,  so the first thing to check is that you've changed the layer on the V7000 (and did so while out of sight of the SVC system).

    See:

    http://pic.dhe.ibm.com/infocenter/svc/ic/index.jsp?topic=%2Fcom.ibm.storage.svc.console.doc%2Fsvc_systemlayer.html

    • robinsguk
      robinsguk
      31 Posts
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      Re: SVC FC to V7000 shows Inactive

      ‏2013-10-24T14:24:59Z  in response to chriscanto

      That makes sense.

      The V7000 is presented to the SVC as an external storage system at present to allow the migration to image mode.

      I guess I need to remove that layer so that I can use remote copy partnerships??

       

      Thanks

      Genn

      • chriscanto
        chriscanto
        271 Posts
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        Re: SVC FC to V7000 shows Inactive

        ‏2013-10-24T14:35:37Z  in response to robinsguk

        That's right, a system can either partner with another for remote copy or be virtualised, but it can't do both things at the same time to a single second system.

        • robinsguk
          robinsguk
          31 Posts
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          Re: SVC FC to V7000 shows Inactive

          ‏2013-10-24T16:10:41Z  in response to chriscanto

          So,

          I've deleted the host definition on the V7000

          Run a detecmdisk on the SVC and the mdisks are no longer there

           

          I still have two external controller descriptions for the V7000 showing on the SVC. How can I remove them?

           

          Glenn

          • chriscanto
            chriscanto
            271 Posts
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            Re: SVC FC to V7000 shows Inactive

            ‏2013-10-24T19:55:29Z  in response to robinsguk

            You'll need to remove/disable the SAN zoning that's allowing the SVC to see the V7000.

            • robinsguk
              robinsguk
              31 Posts
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              Re: SVC FC to V7000 shows Inactive

              ‏2013-10-25T18:25:55Z  in response to chriscanto

              I removed the zones from the SAN switches and after and hour the external controllers disappeared from the SVC.

              The SVC host definition on the V7000 has been deleted.

               

              I then added the zone back in to the SAN config and SVC recreated the external controllers within a few minutes.So I'm back to square one as I can't define a remote partnership.

              Any ideas???????

               

              Glenn

              • chriscanto
                chriscanto
                271 Posts
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                Re: SVC FC to V7000 shows Inactive

                ‏2013-10-25T19:12:26Z  in response to robinsguk

                Are you following the steps in the Information Center for 'Changing the layer of a Storwize family system' ?

                • robinsguk
                  robinsguk
                  31 Posts
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                  Re: SVC FC to V7000 shows Inactive

                  ‏2013-10-26T07:44:53Z  in response to chriscanto

                  Yes. I'm running chgsystem -layer -replication and the V7000 will not change.

                   

                  If I do a lshbaportcandidate I still see the WWNs of the SVC.

                  The SVC no longer sees the V7000 WWNs.

                  The V7000 sees the SVC WWNs as Inactive and type Unknown,

                   

                  Glenn

                • robinsguk
                  robinsguk
                  31 Posts
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                  Re: SVC FC to V7000 shows Inactive

                  ‏2013-11-12T14:26:27Z  in response to chriscanto

                  Looking at the instructions again I'm confused about step 2.

                  Does this mean that the V7000 should not be visible to the SVC only or does it mean that the V7000 should not be visible to any other hosts/SVC/external storage?

                   

                  To change the layer of a system, follow these general steps:

                  1. Use the lssystem command to check the current system layer.
                  2. Configure SAN zoning so that the system whose layer you are changing is not visible to any other system.
                  3. Ensure that all other configuration requirements are met.
                  4. Run the detectmdisk command to ensure that the system detects any fabric changes that were done in step 3.
                  5. Enter chsystem -layer replication to switch to the replication layer or chsystem -layer storage to switch to the storage layer.
                  6. If the SAN configuration was changed in step 2, restore the normal SAN configuration.
                  7. Run the detectmdisk command to update the list of MDisks.
                  • chriscanto
                    chriscanto
                    271 Posts
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                    Re: SVC FC to V7000 shows Inactive

                    ‏2013-11-12T14:59:04Z  in response to robinsguk

                    I believe that means any other SVC or Storwize system.  It's fine for the system to still see other external storage and hosts, but not any other SVC or Storwize box.

                    • robinsguk
                      robinsguk
                      31 Posts
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                      Re: SVC FC to V7000 shows Inactive

                      ‏2013-11-12T15:12:14Z  in response to chriscanto

                      Clutching at straws I guess.

                      This is exactly what I did.

                      The SVC definitely cannot see the V7000 as the external controllers have gone.

                      The V7000 still seems to think it can see the SVC even though I've deleted the host definition and deleted the zone entries from the switches.

                      I did see an APAR for an OLD version of the SVC software which says that WWNs don't get removed until a power recycle or a restart of each node but that was for V5. It seems similar though. The WWNs are still 'known' to the V7000 thus preventing me from successfully running chsystem -layer replication.

                       

                       

                      • chriscanto
                        chriscanto
                        271 Posts
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                        Re: SVC FC to V7000 shows Inactive

                        ‏2013-11-12T15:21:22Z  in response to robinsguk

                        Sounds like it's time to open a software PMR with IBM Support!