Provided by: clvm_2.02.133-1ubuntu9_i386 bug

NAME

       clvmd — cluster LVM daemon

SYNOPSIS

       clvmd [-C] [-d [value]] [-E lock_uuid] [-f] [-h] [-I cluster_manager]
       [-R] [-S] [-t timeout] [-T start_timeout] [-V]

DESCRIPTION

       clvmd is the daemon that distributes  LVM  metadata  updates  around  a
       cluster.   It must be running on all nodes in the cluster and will give
       an error if a node in the cluster does not have this daemon running.

OPTIONS

       -C
              Only valid if -d is also  specified.   Tells  all  clvmds  in  a
              cluster  to  enable/disable debug logging.  Without this switch,
              only the local clvmd will change its debug level to  that  given
              with -d.
              This  does  not  work correctly if specified on the command-line
              that starts clvmd.  If  you  want  to  start  clvmd  and  enable
              cluster-wide  logging then the command needs to be issued twice,
              eg:
              clvmd
              clvmd -d2

       -d [value]
              Set debug logging level.  If -d is  specified  without  a  value
              then 1 is assumed. Value can be:
              0 — Disabled
              1 — Sends debug logs to stderr (implies -f)
              2 — Sends debug logs to syslog(3)

       -E lock_uuid
              Pass  lock  uuid  to  be  reacquired  exclusively  when clvmd is
              restarted.

       -f
              Don't fork, run in the foreground.

       -h
              Show help information.

       -I cluster_manager
              Selects the cluster manager to  use  for  locking  and  internal
              communications.  As  it  is  quite  possible  to  have  multiple
              managers available on the same system you might have to manually
              specify this option to override the search.

              By default, omit -I is equivalent to -Iauto.  Clvmd will use the
              first cluster manager that succeeds, and it  checks  them  in  a
              predefined   order   cman,  corosync,  openais.   The  available
              managers will be listed by order as part of the clvmd -h output.

       -R
              Tells all the running instance of clvmd in the cluster to reload
              their  device  cache  and  re-read  the  lvm  configuration file
              lvm.conf(5). This command should be run whenever the devices  on
              a cluster system are changed.

       -S
              Tells  the  running  clvmd  to  exit  and  reexecute itself, for
              example at the end of a package upgrade.  The  new  instance  is
              instructed to reacquire any locks in the same state as they were
              previously held. (Alternative methods of restarting  the  daemon
              have  the side effect of changing exclusive LV locks into shared
              locks.)

       -t timeout
              Specifies the timeout for commands to run  around  the  cluster.
              This should not be so small that commands with many disk updates
              to do will fail, so you may need to  increase  this  on  systems
              with very large disk farms.  The default is 60 seconds.

       -T start_timeout
              Specifies  the  start  timeout  for clvmd daemon startup. If the
              daemon does not report that it has started up within  this  time
              then  the  parent  command will exit with status of 5. This does
              NOT mean that clvmd has not started! What it means is  that  the
              startup  has been delayed for some reason; the most likely cause
              of this is an inquorate  cluster  though  it  could  be  due  to
              locking  latencies  on  a  cluster with large numbers of logical
              volumes. If you get the return code  of  5  it  is  usually  not
              necessary  to  restart  clvmd  it  will  start  as  soon as that
              blockage has cleared.  This flag is to allow startup scripts  to
              exit in a timely fashion even if the cluster is stalled for some
              reason.

              The default is 0 (no timeout) and the value is in seconds. Don't
              set this too small or you will experience spurious errors. 10 or
              20 seconds might be sensible.

              This timeout will be ignored if you start clvmd with the -d.

       -V
              Display the version of the cluster LVM daemon.

ENVIRONMENT VARIABLES

       LVM_CLVMD_BINARY
              The CLVMD  binary  to  use  when  clvmd  restart  is  requested.
              Defaults to /usr/sbin/clvmd.

       LVM_BINARY
              The LVM2 binary to use.  Defaults to /sbin/lvm.

FILES

       /usr/sbin/clvmd
       /sbin/lvm

SEE ALSO

       syslog(3), lvm.conf(5), lvm(8)