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Operating Systems Linux Red Hat LVM question
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Old 04-29-2010
LVM question

Hi all;

I have a quick question about LVM.

2.6.18-92.1.18.el5

Distributor ID: RedHatEnterpriseServer
Description: Red Hat Enterprise Linux Server release 5.3 (Tikanga)
Release: 5.3
Codename: Tikanga


I was going through /etc/lvm.conf and I am not clear with lvm meta data backup

My question is on what basis does the backup happen.

a] Is it based on any meta data changes.
b] Is it time bound

Regards
Maverick

---------- Post updated at 05:08 PM ---------- Previous update was at 04:01 PM ----------

I got my answer....By the way thank you all for your HELP
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LVMETAD(8)						      System Manager's Manual							LVMETAD(8)

NAME
lvmetad - LVM metadata cache daemon SYNOPSIS
lvmetad [-l {all|wire|debug}] [-p pidfile_path] [-s socket_path] [-f] [-h] [-V] [-?] 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 avail- able in the system. By default, lvmetad, even if running, is not used by LVM. See lvm.conf(5). OPTIONS
To run the daemon in a test environment both the pidfile_path and the socket_path should be changed from the defaults. -f Don't fork, but run in the foreground. -h, -? Show help information. -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. -p pidfile_path Path to the pidfile. This overrides both the built-in default (#DEFAULT_PID_DIR#/lvmetad.pid) and the environment variable LVM_LVMETAD_PIDFILE. This file is used to prevent more than one instance of the daemon running simultaneously. -s socket_path Path to the socket file. This overrides both the built-in default (/run/lvm/lvmetad.socket) and the environment variable LVM_LVMETAD_SOCKET. To communicate successfully with lvmetad, all LVM2 processes should use the same socket path. -V Display the version of lvmetad daemon. ENVIRONMENT VARIABLES
LVM_LVMETAD_PIDFILE Path for the pid file. LVM_LVMETAD_SOCKET Path for the socket file. SEE ALSO
lvm(8), lvm.conf(5) Red Hat Inc LVM TOOLS 2.02.105(2)-RHEL7 (2014-03-26) LVMETAD(8)