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| author | Zdenek Kabelac <zkabelac@redhat.com> | 2022-04-13 15:09:08 +0200 |
|---|---|---|
| committer | Zdenek Kabelac <zkabelac@redhat.com> | 2022-05-03 19:09:52 +0200 |
| commit | 5e060b8fa71dcf7ad2ff2daca8dbfa009f691852 (patch) | |
| tree | 87bd94e6233301f269bcc793a6f7398c094d9e20 /man | |
| parent | dd28460017356d9a1a30a787b5572e9bcbf1c4a4 (diff) | |
| download | lvm2-5e060b8fa71dcf7ad2ff2daca8dbfa009f691852.tar.gz | |
vdo: support --vdosettings
Allow to use --vdosettings with lvcreate,lvconvert,lvchange.
Support settings currenly only configurable via lvm.conf.
With lvchange we require inactivate LV for changes to be applied.
Settings block_map_era_length has supported alias block_map_period.
Diffstat (limited to 'man')
| -rw-r--r-- | man/lvmvdo.7_main | 39 |
1 files changed, 31 insertions, 8 deletions
diff --git a/man/lvmvdo.7_main b/man/lvmvdo.7_main index 3b77173c4..14bd640b5 100644 --- a/man/lvmvdo.7_main +++ b/man/lvmvdo.7_main @@ -132,6 +132,19 @@ that can keep 100% incompressible data there. # lvconvert --type vdo-pool -n vdo0 -V10G vg/ExistingLV .fi . +.SS \n+[step]. Change the compression and deduplication of a VDOPoolLV +. +Disable or enable the compression and deduplication for VDOPoolLV +(the volume that maintains all VDO LV(s) associated with it). +.P +.B lvchange --compression y|n --deduplication y|n VG/VDOPoolLV +.P +.I Example +.nf +# lvchange --compression n vg/vdopool0 +# lvchange --deduplication y vg/vdopool1 +.fi +. .SS \n+[step]. Change the default settings used for creating a VDOPoolLV . VDO allows to set a large variety of options. Lots of these settings @@ -173,17 +186,27 @@ EOF # lvcreate --vdo -L10G --config 'allocation/vdo_cpu_threads=4' vg/vdopool1 .fi . -.SS \n+[step]. Change the compression and deduplication of a VDOPoolLV -. -Disable or enable the compression and deduplication for VDOPoolLV -(the volume that maintains all VDO LV(s) associated with it). -.P -.B lvchange --compression y|n --deduplication y|n VG/VDOPoolLV +.SS \n+[step]. Set or change VDO settings with option --vdosettings +. +Use the form 'option=value' or 'option1=value option2=value', +or repeat --vdosettings for each option being set. +Options are listed in the Example section above, for the full description see +.BR lvm.conf (5). +Options can omit 'vdo_' and 'vdo_use_' prefixes and all its underscores. +So i.e. vdo_use_metadata_hints=1 and metadatahints=1 are equivalent. +To change the option for an already existing VDOPoolLV use +.BR lvchange (8) +command. However not all option can be changed. +Only compression and deduplication options can be also changed for an active VDO LV. +Lowest priority options are specified with configuration file, +then with --vdosettings and highest are expliction option --compression +and --deduplication. .P .I Example +.P .nf -# lvchange --compression n vg/vdopool0 -# lvchange --deduplication y vg/vdopool1 +# lvcreate --vdo -L10G --vdosettings 'ack_threads=1 hash_zone_threads=2' vg/vdopool0 +# lvchange --vdosettings 'bio_threads=2 deduplication=1' vg/vdopool0 .fi . .SS \n+[step]. Checking the usage of VDOPoolLV |