Red Hat GLOBAL FILE SYSTEM 5.0, Руководство администратора

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rescanning.
You can control which devices LVM scans by setting up filters in the
lvm.conf
configuration file.
The filters consist of a series of simple regular expressions that get applied to the device names
in the
/dev
directory to decide whether to accept or reject each block device found.
The following examples show the use of filters to control which devices LVM scans. Note that
some of these examples do not necessarily represent best practice, as the regular expressions
are matched freely against the complete pathname. For example,
a/loop/
is equivalent to
a/.*loop.*/
and would match
/dev/solooperation/lvol1
.
The following filter adds all discovered devices, which is the default behavior as there is no filter
configured in the configuration file:
filter = [ "a/.*/" ]
The following filter removes the cdrom device in order to avoid delays if the drive contains no
media:
filter = [ "r|/dev/cdrom|" ]
The following filter adds all loop and removes all other block devices:
filter = [ "a/loop.*/", "r/.*/" ]
The following filter adds all loop and IDE and removes all other block devices:
filter =[ "a|loop.*|", "a|/dev/hd.*|", "r|.*|" ]
The following filter adds just partition 8 on the first IDE drive and removes all other block
devices:
filter = [ "a|^/dev/hda8$|", "r/.*/" ]
For more information on the
lvm.conf
file, see Appendix B, The LVM Configuration Files and
the
lvm.conf
(5) man page.
7. Online Data Relocation
You can move data while the system is in use with the
pvmove
command.
Online Data Relocation
45