Next: 配置 VDO Up: Virtual Data Optimizer (VDO) Previous: 前言 Contents DYWANG_HOME
[root@kvm10 ~]# yum install vdo App Stream 401 kB/s | 4.3 kB 00:00 Base OS 828 kB/s | 3.9 kB 00:00 Dependencies resolved. ================================================================================ Package Arch Version Repository Size ================================================================================ Installing: vdo x86_64 6.2.0.293-10.el8 BaseOS 682 k Installing dependencies: kmod-kvdo x86_64 6.2.0.293-50.el8 BaseOS 348 k python3-pyyaml x86_64 3.12-12.el8 BaseOS 193 k Transaction Summary ================================================================================ Install 3 Packages Total download size: 1.2 M Installed size: 6.2 M Is this ok [y/N]: y
[root@kvm10 ~]# vdo --help
usage: vdo [-h] command ...
Manage kernel VDO devices and related configuration information. For help on
individual commands specify the command followed by --help. Unless otherwise
noted all commands must be run with root privileges.
optional arguments:
-h, --help show this help message and exit
management commands:
command description
activate Activates one or more VDO volumes. Activated volumes
can be started using the 'start' command.
changeWritePolicy Modifies the write policy of one or all running VDO
volumes.
create Creates a VDO volume and its associated index and
makes it available.
deactivate Deactivates one or more VDO volumes. Deactivated
volumes cannot be started by the 'start' command.
Deactivating a currently running volume does not stop
it.
disableCompression Disables compression on one or more VDO volumes. If
the VDO volume is running, takes effect immediately.
disableDeduplication
Disables deduplication on one more VDO volumes. If the
VDO volume is running, takes effect immediately.
enableCompression Enables compression on one or more VDO volumes. If the
VDO volume is running, takes effect immediately.
enableDeduplication
Enables deduplication on one or more VDO volumes. If
the VDO volume is running, takes effect immediately.
growLogical Grows the logical size of a VDO volume. The volume
must exist and must be running.
growPhysical Grows the physical size of a VDO volume. The volume
must exist and must be running.
list Displays a list of started VDO volumes. If --all is
specified it displays both started and non-started
volumes.
modify Modifies configuration parameters of one or all VDO
volumes. Changes take effect the next time the VDO
device is started; already-running devices are not
affected.
printConfigFile Prints the configuration file to stdout. This command
does not require root privileges.
remove Removes one or more stopped VDO volumes and associated
indexes.
start Starts one or more stopped, activated VDO volumes and
associated services.
status Reports VDO system and volume status in YAML format.
This command does not require root privileges though
information will be incomplete if run without.
stop Stops one or more running VDO volumes and associated
services.
[root@kvm10 ~]# vdo create --help
usage: vdo create [-h] -n <volume> --device <devicepath>
[--activate {disabled,enabled}]
[--blockMapCacheSize <megabytes>]
[--blockMapPeriod <period>]
[--compression {disabled,enabled}]
[--deduplication {disabled,enabled}]
[--emulate512 {disabled,enabled}] [--force]
[--indexMem <gigabytes>] [--maxDiscardSize <megabytes>]
[--sparseIndex {disabled,enabled}] [--uuid <uuid>]
[--vdoAckThreads <threadCount>]
[--vdoBioRotationInterval <ioCount>]
[--vdoBioThreads <threadCount>]
[--vdoCpuThreads <threadCount>]
[--vdoHashZoneThreads <threadCount>]
[--vdoLogicalSize <megabytes>]
[--vdoLogicalThreads <threadCount>]
[--vdoLogLevel {critical,error,warning,notice,info,debug}]
[--vdoPhysicalThreads <threadCount>]
[--vdoSlabSize <megabytes>]
[--writePolicy {async,async-unsafe,sync,auto}] [-f <file>]
[--logfile <pathname>] [--verbose]
..........................
--verbose Prints commands before executing them.