mirror of
git://sourceware.org/git/lvm2.git
synced 2024-12-22 17:35:59 +03:00
72 lines
2.3 KiB
Groff
72 lines
2.3 KiB
Groff
.TH LVMETAD 8 "LVM TOOLS #VERSION#" "Red Hat Inc" \" -*- nroff -*-
|
|
.SH NAME
|
|
lvmetad \(em LVM metadata cache daemon
|
|
.SH SYNOPSIS
|
|
.B lvmetad
|
|
.RB [ \-l
|
|
.RI { all | wire | debug }]
|
|
.RB [ \-p
|
|
.IR pidfile_path ]
|
|
.RB [ \-s
|
|
.IR socket_path ]
|
|
.RB [ \-f ]
|
|
.RB [ \-h ]
|
|
.RB [ \-V ]
|
|
.RB [ \-? ]
|
|
.SH DESCRIPTION
|
|
lvmetad is a metadata caching daemon for LVM. The daemon receives notifications
|
|
from udev rules (which must be installed for LVM to work correctly when lvmetad
|
|
is in use). Through these notifications, lvmetad has an up-to-date and
|
|
consistent image of the volume groups available in the system.
|
|
|
|
lvmetad is used by LVM only if it is enabled in \fBlvm.conf\fP(5) by specifying the
|
|
\fBglobal/use_lvmetad\fP setting. If this is not defined in the LVM configuration
|
|
explicitly then default setting is used instead (see the output of
|
|
\fBlvm dumpconfig \-\-type default global/use_lvmetad\fP command).
|
|
.SH OPTIONS
|
|
|
|
To run the daemon in a test environment both the pidfile_path and the
|
|
socket_path should be changed from the defaults.
|
|
.TP
|
|
.B \-f
|
|
Don't fork, but run in the foreground.
|
|
.TP
|
|
.BR \-h ", " \-?
|
|
Show help information.
|
|
.TP
|
|
.IR \fB\-l " {" all | wire | debug }
|
|
Select the type of log messages to generate.
|
|
Messages are logged by syslog.
|
|
Additionally, when \-f is given they are also sent to standard error.
|
|
Since release 2.02.98, there are two classes of messages: wire and debug.
|
|
Selecting 'all' supplies both and is equivalent to a comma-separated list
|
|
\-l wire,debug.
|
|
Prior to release 2.02.98, repeating \-d from 1 to 3 times, viz. \-d, \-dd, \-ddd,
|
|
increased the detail of messages.
|
|
.TP
|
|
.B \-p \fIpidfile_path
|
|
Path to the pidfile. This overrides both the built-in default
|
|
(#DEFAULT_PID_DIR#/lvmetad.pid) and the environment variable
|
|
\fBLVM_LVMETAD_PIDFILE\fP. This file is used to prevent more
|
|
than one instance of the daemon running simultaneously.
|
|
.TP
|
|
.B \-s \fIsocket_path
|
|
Path to the socket file. This overrides both the built-in default
|
|
(#DEFAULT_RUN_DIR#/lvmetad.socket) and the environment variable
|
|
\fBLVM_LVMETAD_SOCKET\fP. To communicate successfully with lvmetad,
|
|
all LVM2 processes should use the same socket path.
|
|
.TP
|
|
.B \-V
|
|
Display the version of lvmetad daemon.
|
|
.SH ENVIRONMENT VARIABLES
|
|
.TP
|
|
.B LVM_LVMETAD_PIDFILE
|
|
Path for the pid file.
|
|
.TP
|
|
.B LVM_LVMETAD_SOCKET
|
|
Path for the socket file.
|
|
|
|
.SH SEE ALSO
|
|
.BR lvm (8),
|
|
.BR lvm.conf (5)
|