Merge pull request #85366 from sr1kar99/2092-metadatasize-params

TELCODOCS#2092: Configuring metadatasize for the thin pool

Author: xenolinux

modules/lvms-about-lvmcluster-cr.adoc

@@ -140,16 +140,27 @@ For more information, see "Overview of chunk size".
 
 |`thinPoolConfig.chunkSizeCalculationPolicy`
 |`string`
-|Specifies the policy to calculate the chunk size for the underlying volume group. You can set this field to either `Static` or `Host`. By default, this field is set to `Static`. 
+|Specifies the policy to calculate the chunk size for the underlying volume group. You can set this field to either `Static` or `Host`. By default, this field is set to `Static`.
 
 If this field is set to `Static`, the chunk size is set to the value of the `chunkSize` field. If the `chunkSize` field is not configured, chunk size is set to 128 KiB.
 
 If this field is set to `Host`, the chunk size is calculated based on the configuration in the `lvm.conf` file.
 
 For more information, see "Limitations to configure the size of the devices used in LVM Storage".
 
-|====
+|`thinPoolConfig.metadataSize`
+|`integer`
+|Specifies the metadata size for the thin pool. You can configure this field only when the `MetadataSizeCalculationPolicy` field is set to `Static`. 
 
+If this field is not configured, and the `MetadataSizeCalculationPolicy` field is set to `Static`, the default metadata size is set to 1 GiB. 
 
+The value for this field must be configured in the range of 2 MiB to 16 GiB due to the underlying limitations of `lvm2`. You can only increase the value of this field during updates.
 
+|`thinPoolConfig.metadataSizeCalculationPolicy`
+|`string`
+|Specifies the policy to calculate the metadata size for the underlying volume group. You can set this field to either `Static` or `Host`. By default, this field is set to `Host`.
 
+If this field is set to `Static`, the metadata size is calculated based on the value of the `thinPoolConfig.metadataSize` field. 
+
+If this field is set to `Host`, the metadata size is calculated based on the `lvm2` settings. 
+|====

snippets/lvms-creating-lvmcluster.adoc

@@ -39,5 +39,7 @@ spec:
         overprovisionRatio: 10 
         chunkSize: 128Ki <1>
         chunkSizeCalculationPolicy: Static <1>
+        metadataSize: 1Gi <1>
+        metadataSizeCalculationPolicy: Host <1>
 ----
 <1> Optional field