rhtyd commented on a change in pull request #238:
URL:
https://github.com/apache/cloudstack-documentation/pull/238#discussion_r697345343
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File path: source/adminguide/storage.rst
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@@ -661,6 +661,37 @@ The following table shows possible combinations of Service
offering supported re
Shrinking the Root disk is not supported via the service offering resizing
workflow. All the combinations above assume a transition to Root disks with
size equals or bigger than the original.
Service Offerings with Root size of 0GB do not change the disk size to Zero
and indicates that the offering do not enforces a Root disk size.
+Change disk offering for volume
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+There are volume operations like migrate volume and resize volume and both
accepts new disk offering to replace the existing disk offering of volume.
+Instead of those APIs, Disk offering of a volume can be changed directly using
changeOfferingForVolume API, also supported from UI.
+Upon changing the disk offering the volume will be resized and/or migrated to
the suitable storage pool if required according to the new disk offering.
+
+Global setting "match.storage.pool.tags.with.disk.offering" gives flexibility
or control to choose the new disk offering.
+If this setting is true, then the new disk offering should have the same
storage tags as the exiting disk offering of the volume.
+
+To change the disk offering of a volume:
+
+#. Log in to the CloudStack UI as a user or admin.
+
+#. In the left navigation bar, click Storage.
+
+#. In Select View, choose Volumes.
+
+#. Select the volume name in the Volumes list, then click the Change Offering
for Volume button
+
+#. In the Change Offering For Volume pop-up, choose desired disk offering for
the
+ volume.
+
+ |change-offering-for-volume.png|
Review comment:
Image didn't render in docs
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