1CMIRRORD(8)                 System Manager's Manual                CMIRRORD(8)
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NAME

6       cmirrord — cluster mirror log daemon
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SYNOPSIS

10       cmirrord [-f] [-h]
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DESCRIPTION

14       cmirrord is the daemon that tracks mirror log information in a cluster.
15       It is specific to device-mapper based mirrors (and  by  extension,  LVM
16       cluster mirrors).  Cluster mirrors are not possible without this daemon
17       running.
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19       This daemon relies  on  the  cluster  infrastructure  provided  by  the
20       corosync,  which  must  be  set up and running in order for cmirrord to
21       function.
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23       Output is logged via syslog(3). The SIGUSR1 signal(7) can be issued  to
24       cmirrord to gather current status information for debugging purposes.
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26       Once started, cmirrord will run until it is shutdown via SIGINT signal.
27       If there are still active cluster mirrors, however, the signal will  be
28       ignored.  Active cluster mirrors should be shutdown before stopping the
29       cluster mirror log daemon.
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OPTIONS

33       -f, --foreground
34           Do not fork and log to the terminal.
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36       -h, --help
37           Print usage.
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SEE ALSO

41       lvmlockd(8), lvm(8), syslog(3), signal(7)
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45Red Hat Inc            LVM TOOLS 2.03.09(2) (2020-03-26)           CMIRRORD(8)