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HACMP - Shared VG, Concurrent VG, Access (Concurrent or non-concurrent)

  • 1.  HACMP - Shared VG, Concurrent VG, Access (Concurrent or non-concurrent)

    Posted Tue September 22, 2009 04:11 PM

    Originally posted by: Kyne


    Can you help me to understand...

    I have a cluster with these information:

    NODE1 and NODE2

    /usr/sbin/cluster/utilities/clfindres
    -----------------------------------------------------------------------------
    Group Name Type State Location
    -----------------------------------------------------------------------------
    RESGROUP1 non-concurrent ONLINE NODE1
    OFFLINE NODE2

    lspv
    hdisk0 00c0e10e5e6b67f2 rootvg active
    hdisk1 00c0e15e5d692919 othervg concurrent
    (hdisk1 is same pvid on the 2 nodes)
    lsvg othervg

    VOLUME GROUP: othervg

    VG STATE: active

    VG PERMISSION: read/write for NODE1 and passive-only for NODE2
    Concurrent: Enhanced-Capable

    Auto-Concurrent: Disabled
    Here is what I conclude... Is it OK?

    I have Shared VG with concurrent access (disk are actively connected to my two node simultaneously),
    but my Ressource group is in non-concurrent access mode (Own by only a single node..
    If takeover, disk takeover is not require, only Ressource Group takeover will take place...
    #AIX-Forum


  • 2.  Re: HACMP - Shared VG, Concurrent VG, Access (Concurrent or non-concurrent)

    Posted Fri September 25, 2009 10:37 AM

    Originally posted by: ostost


    In case of a takeover HACMP will do a "fast disk takeover" meaning it will switch the volume group to read/write on node2
    #AIX-Forum


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