• Sunil Mushran's avatar
    ocfs2/dlm: Add new dlm message DLM_BEGIN_EXIT_DOMAIN_MSG · bddefdee
    Sunil Mushran authored
    This patch adds a new dlm message DLM_BEGIN_EXIT_DOMAIN_MSG and ups the dlm
    protocol to 1.2.
    
    o2dlm sends this new message in dlm_unregister_domain() to mark the beginning
    of the exit domain. This message is sent to all nodes in the domain.
    
    Currently o2dlm has no way of informing other nodes of its impending exit.
    This information is useful as the other nodes could disregard the exiting
    node in certain operations. For example, in resource migration. If two or
    more nodes were umounting in parallel, it would be more efficient if o2dlm
    were to choose a non-exiting node to be the new master node rather than an
    exiting one.
    Signed-off-by: default avatarSunil Mushran <sunil.mushran@oracle.com>
    Reviewed-by: default avatarMark Fasheh <mfasheh@suse.com>
    Signed-off-by: default avatarJoel Becker <jlbec@evilplan.org>
    bddefdee
dlmdebug.c 27.4 KB