The Lvm Configuration Files; Sample Lvm.conf File - Red Hat ENTERPRISE LINUX 5 - LOGICAL VOLUME MANAGER ADMINISTRATION Manual

Appendix B. The LVM Configuration
Files
LVM supports multiple configuration files. At system startup, the lvm.conf configuration file is loaded
from the directory specified by the environment variable LVM_SYSTEM_DIR, which is set to /etc/lvm
by default.
The lvm.conf file can specify additional configuration files to load. Settings in later files override
settings from earlier ones. To display the settings in use after loading all the configuration files,
execute the lvm dumpconfig command.
For information on loading additional configuration files, see
B.1. The LVM Configuration Files
The following files are used for LVM configuration:
/etc/lvm/lvm.conf
Central configuration file read by the tools.
etc/lvm/lvm_hosttag.conf
For each host tag, an extra configuration file is read if it exists: lvm_hosttag.conf. If that file
defines new tags, then further configuration files will be appended to the list of tiles to read in. For
information on host tags, see
In addition to the LVM configuration files, a system running LVM includes the following files that affect
LVM system setup:
/etc/lvm/.cache
Device name filter cache file (configurable).
/etc/lvm/backup/
Directory for automatic volume group metadata backups (configurable).
/etc/lvm/archive/
Directory for automatic volume group metadata archives (configurable with regard to directory path
and archive history depth).
/var/lock/lvm/
In single-host configuration, lock files to prevent parallel tool runs from corrupting the metadata; in
a cluster, cluster-wide DLM is used.
B.2. Sample lvm.conf File
The following is a sample lvm.conf configuration file. This configuration file is the default file for the
RHEL 5.3 release. If your system is running a different release of RHEL5, some of the default settings
may differ.
[root@tng3-1 lvm]# cat /etc/lvm/lvm.conf
# This is an example configuration file for the LVM2 system.
Section C.2, "Host Tags".
Section C.2, "Host Tags".
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