Topic
  • 12 replies
  • Latest Post - ‏2013-11-12T15:21:22Z by chriscanto
robinsguk
robinsguk
31 Posts

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
    291 Posts

    Re: SVC FC to V7000 shows Inactive

    ‏2013-10-24T14:09:29Z  

    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

    Re: SVC FC to V7000 shows Inactive

    ‏2013-10-24T14:24:59Z  

    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

    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
    291 Posts

    Re: SVC FC to V7000 shows Inactive

    ‏2013-10-24T14:35:37Z  
    • robinsguk
    • ‏2013-10-24T14:24:59Z

    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

    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

    Re: SVC FC to V7000 shows Inactive

    ‏2013-10-24T16:10:41Z  

    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.

    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
    291 Posts

    Re: SVC FC to V7000 shows Inactive

    ‏2013-10-24T19:55:29Z  
    • robinsguk
    • ‏2013-10-24T16:10:41Z

    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

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

  • robinsguk
    robinsguk
    31 Posts

    Re: SVC FC to V7000 shows Inactive

    ‏2013-10-25T18:25:55Z  

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

    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
    291 Posts

    Re: SVC FC to V7000 shows Inactive

    ‏2013-10-25T19:12:26Z  
    • robinsguk
    • ‏2013-10-25T18:25:55Z

    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

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

  • robinsguk
    robinsguk
    31 Posts

    Re: SVC FC to V7000 shows Inactive

    ‏2013-10-26T07:44:53Z  

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

    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

    Re: SVC FC to V7000 shows Inactive

    ‏2013-11-12T14:26:27Z  

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

    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
    291 Posts

    Re: SVC FC to V7000 shows Inactive

    ‏2013-11-12T14:59:04Z  
    • robinsguk
    • ‏2013-11-12T14:26:27Z

    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.

    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

    Re: SVC FC to V7000 shows Inactive

    ‏2013-11-12T15:12:14Z  

    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.

    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
    291 Posts

    Re: SVC FC to V7000 shows Inactive

    ‏2013-11-12T15:21:22Z  
    • robinsguk
    • ‏2013-11-12T15:12:14Z

    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.

     

     

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