• Goldwyn Rodrigues's avatar
    ocfs2: add clustername to cluster connection · c74a3bdd
    Goldwyn Rodrigues authored
    This is an effort of removing ocfs2_controld.pcmk and getting ocfs2 DLM
    handling up to the times with respect to DLM (>=4.0.1) and corosync
    (2.3.x).  AFAIK, cman also is being phased out for a unified corosync
    cluster stack.
    
    fs/dlm performs all the functions with respect to fencing and node
    management and provides the API's to do so for ocfs2.  For all future
    references, DLM stands for fs/dlm code.
    
    The advantages are:
     + No need to run an additional userspace daemon (ocfs2_controld)
     + No controld device handling and controld protocol
     + Shifting responsibilities of node management to DLM layer
    
    For backward compatibility, we are keeping the controld handling code.
    Once enough time has passed we can remove a significant portion of the
    code.  This was tested by using the kernel with changes on older
    unmodified tools.  The kernel used ocfs2_controld as expected, and
    displayed the appropriate warning message.
    
    This feature requires modification in the userspace ocfs2-tools.  The
    changes can be found at: https://github.com/goldwynr/ocfs2-tools branch:
    nocontrold Currently, not many checks are present in the userspace code,
    but that would change soon.
    
    This patch (of 6):
    
    Add clustername to cluster connection.
    Signed-off-by: default avatarGoldwyn Rodrigues <rgoldwyn@suse.com>
    Reviewed-by: default avatarMark Fasheh <mfasheh@suse.de>
    Cc: Joel Becker <jlbec@evilplan.org>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    c74a3bdd
dlmglue.c 114 KB