How can I collect more information to diagnose problems with cluster lvm commands hanging or not returning quickly in Red Hat Enterprise Linux High Availability clusters with clvmd?

Updated -

Several pieces of information can be valuable when attempting to determine why LVM commands are hanging in a Clustered LVM environment:

  1. Run "very-verbose" LVM commands with strace to capture the system calls up and until the command hangs:

    # strace -f -s 1024 -o /tmp/vgdisplay.out vgdisplay -vvvv
    <ctrl+c after some time if the command hangs>
    
    <...>

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