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Sunday, December 17, 2017

Understanding the LVM Configuration Files in Linux

Understanding the LVM Configuration Files in Linux

The following files are part of 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.
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.

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