lvsync(1M)lvsync(1M)NAMElvsync - synchronize stale mirrors in LVM logical volumes
SYNOPSIS
lv_path ...
Remarks
This command requires the installation of the optional HP MirrorDisk/UX
software (not included in the standard HP-UX operating system) before
it can be used.
If the logical volume input arguments belong to a combination of volume
groups version 1.0 and 2.0 or higher, the arguments may not be pro‐
cessed in the order they are listed on the command line.
DESCRIPTION
The command synchronizes the physical extents of each logical volume
specified by lv_path. Synchronization occurs only on physical extents
that are stale mirrors of the original logical extent. The synchro‐
nization process can be time consuming, depending on the hardware char‐
acteristics and the amount of data.
Arguments
recognizes the following argument:
lv_path The block device path name of a mirrored logical vol‐
ume.
Options
recognizes the following option:
Perform mirror synchronization of logical volumes within a vol‐
ume group
using multiple parallel threads. Logical volumes
belonging to different volume groups will be synchro‐
nized serially. It is possible that logical volumes
start and/or complete their synchronization in a dif‐
ferent order than specified on the command line.
The maximum number of threads used can be controlled
using the system tunable.
NOTE: This option has no effect if the volume group is
activated in shared mode.
EXTERNAL INFLUENCES
Environment Variables
determines the language in which messages are displayed.
If is not specified or is null, it defaults to "C" (see lang(5)).
If any internationalization variable contains an invalid setting, all
internationalization variables default to "C" (see environ(5)).
EXAMPLES
Synchronize the mirrors on a logical volume:
Synchronize the mirrors on three logical volumes using multiple paral‐
lel threads:
Add mirror copies using with the option for three logical volumes, and
then synchronize mirrors on these three logical volumes using multiple
parallel threads.
First, add mirror copies to each logical volume using with the option:
Now synchronize the mirrors on these three logical volumes using multi‐
ple parallel threads:
SEE ALSOlvdisplay(1M), lvextend(1M), vgsync(1M).
Requires Optional HP MirrorDisk/UX Software lvsync(1M)