• Benjamin Marzinski's avatar
    GFS2: force a log flush when invalidating the rindex glock · 1ce53368
    Benjamin Marzinski authored
    Right now, there is nothing that forces the log to get flushed when a node
    drops its rindex glock so that another node can grow the filesystem. If the
    log doesn't get flushed, GFS2 can corrupt the sd_log_le_rg list in the
    following way.
    
    A node puts an rgd on the list in rg_lo_add(), and then the rindex glock is
    dropped so the other node can grow the filesystem. When the node reacquires the
    rindex glock, that rgd gets deleted in clear_rgrpdi() before ever being
    removed from the list by gfs2_log_flush().
    
    This code simply forces a log flush when the rindex glock is invalidated,
    solving the problem.
    Signed-off-by: default avatarBenjamin Marzinski <bmarzins@redhat.com>
    Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
    1ce53368
glops.c 14.8 KB