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PowerHA failover works but failback doesn't

  • 1.  PowerHA failover works but failback doesn't

    Posted Thu June 23, 2011 11:57 PM

    Originally posted by: Yanuly


    Hi,
    I configured a two node cluster with cross mounted NFS on which I can perform failovers but not failbacks. The problem is that while the resource group and service ip does get transferred to the failover node, the failback doesn't bring back the service ip and the NFS operation hangs (as a test I manually configured the ip-alias and inmediately the cluster proceeds to mount and conclude, successfully, the failback). Which could be the cause?
    My configuration is:
    Cluster Topology
    Cluster Name: mediacion
    Cluster Connection Authentication Mode: Standard
    Cluster Message Authentication Mode: None
    Cluster Message Encryption: None
    Use Persistent Labels for Communication: No

    NODE appserver:
    Network net_diskhb_02
    appserver_hdisk1_01 /dev/hdisk1
    Network net_diskhb_03
    appserver_hdisk3_01 /dev/hdisk3
    Network net_ether_01
    mcluster 172.20.41.154
    dbservice 172.20.41.155
    apint21 10.1.2.1
    apint11 10.1.1.1
    apint31 10.1.3.1
    Network net_ether_02

    NODE dbserver:
    Network net_diskhb_02
    dbserver_hdisk3_01 /dev/hdisk3
    Network net_diskhb_03
    dbserver_hdisk1_01 /dev/hdisk1
    Network net_ether_01
    mcluster 172.20.41.154
    dbservice 172.20.41.155
    dbint12 10.1.1.2
    dbint32 10.1.3.2
    dbint22 10.1.2.2
    Network net_ether_02

    I have also set the "Filesystems mounted before IP configured" to true.

    The nodes have persistant ip addresses as well: 172.20.41.151 and 152. For example:
    dbserver
    en0: flags=5e080863,c0<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST,GROUPRT,64BIT,CHECKSUM_OFFLOAD(ACTIVE),PSEG,LARGESEND,CHAIN>
    inet 172.20.41.152 netmask 0xffffff00 broadcast 172.20.41.255
    tcp_sendspace 131072 tcp_recvspace 65536 rfc1323 0
    en2: flags=5e080863,c0<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST,GROUPRT,64BIT,CHECKSUM_OFFLOAD(ACTIVE),PSEG,LARGESEND,CHAIN>
    inet 10.1.1.2 netmask 0xffffff00 broadcast 10.1.1.255
    inet 172.20.41.154 netmask 0xffffff00 broadcast 172.20.41.255
    tcp_sendspace 131072 tcp_recvspace 65536 rfc1323 0
    en4: flags=5e080863,c0<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST,GROUPRT,64BIT,CHECKSUM_OFFLOAD(ACTIVE),PSEG,LARGESEND,CHAIN>
    inet 10.1.2.2 netmask 0xffffff00 broadcast 10.1.2.255
    tcp_sendspace 131072 tcp_recvspace 65536 rfc1323 0
    en6: flags=5e080863,c0<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST,GROUPRT,64BIT,CHECKSUM_OFFLOAD(ACTIVE),PSEG,LARGESEND,CHAIN>
    inet 10.1.3.2 netmask 0xffffff00 broadcast 10.1.3.255
    tcp_sendspace 131072 tcp_recvspace 65536 rfc1323 0

    I'm running PowerHA under AIX 5.3.12 with all the current patches.


  • 2.  Re: PowerHA failover works but failback doesn't

    Posted Thu June 30, 2011 01:33 PM

    Originally posted by: alethad


    I didn't see where you stated this but have you checked the log file and watched the flow of the fallback to see if there is some error or something that failed?


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