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How to convert normal shared Volume groups to enhanced concurrent VG ?

  • 1.  How to convert normal shared Volume groups to enhanced concurrent VG ?

    Posted Wed November 07, 2007 05:43 AM

    Originally posted by: SystemAdmin


    Hi

    We have a HACMP 5.2 cluster on AIX 5.2 (ML05) connected to FastT 600. How do I convert the normal shared Volume groups to enhanced concurrent capable? Is there any possibility of data loss in doing so? After converting them into enhanced concurrent capable VG, will I be able to add new physical volumes to the cluster Vgs online, without bringing down the cluster ?

    Please help me...

    With regards
    Kuntal M Acharyya
    #AIX-Forum


  • 2.  Re: How to convert normal shared Volume groups to enhanced concurrent VG ?

    Posted Wed November 07, 2007 09:16 AM

    Originally posted by: alethad


    You need to do a chvg with the -C option. Check your man pages and it will explain it to you. This is a dynamic change and once you've done it you can perfom whatever tasks you need to for the volume group. You will need to re-import your volume group on the other nodes and run your verify & sync since you've made a change that affects the cluster.
    Good luck.
    #AIX-Forum


  • 3.  Re: How to convert normal shared Volume groups to enhanced concurrent VG ?

    Posted Mon November 12, 2007 01:19 AM

    Originally posted by: SystemAdmin


    Hi

    Thanks a lot for the reply. Well, ya, that is to convert the VGs into enhanced concurrent capable. If I do so, will I be able to add the LUNs, create filesystem etc, on the fly, to the cluster form the FastT box ? Will it have any impact on the data residing on the VGs?

    Please advice

    With regards
    Kuntal
    #AIX-Forum


  • 4.  Re: How to convert normal shared Volume groups to enhanced concurrent VG ?

    Posted Tue November 13, 2007 09:40 AM

    Originally posted by: alethad


    This will have no affect on the data or anything regarding assigning disks. You perform normal tasks just like you've always done. This only gives the other node access to the volume group. It will only be active on 1 node at a time. Test it first and see for yourself.
    Hope this helps.
    #AIX-Forum


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