GabrielBrascher commented on a change in pull request #162:
URL:
https://github.com/apache/cloudstack-documentation/pull/162#discussion_r521742610
##########
File path: source/adminguide/storage.rst
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@@ -617,6 +617,38 @@ To resize a volume:
#. Click OK.
+Root Volume size defined via Service Offering
+~~~~~~~~~~~~~~~~
+
+If a Service Offering is created with a root disk size, then resizing the Root
volume is possible only by resizing the VMs service offering.
+
+Service offering Root resizing constrains:
+
+#. Users cannot deploy VMs with custom root disk size when using such offerings
+
+#. Users cannot resize the VM root disk size when using such offerings
+
+#. The Root Volume of such VMs can only be resized when changing to another
Service Offering with a Root disk size equals or larger than the current one.
+
+#. Users can change the VM offering to a service offering with a Root size of
0GB (default) and then customize the volume size.
+
+The following table shows possible combinations of Service offering supported
resizing based on the offering Root disk size:
+
++---+----------------------------+---------------------------+-------------------------------+
+| # | Service Offering Root size | new Service Offering Root | Does support
offering resize? |
++---+----------------------------+---------------------------+-------------------------------+
+| 1 | 0GB (default) | Any | YES
|
++---+----------------------------+---------------------------+-------------------------------+
+| 2 | 5GB | 5GB | YES
|
++---+----------------------------+---------------------------+-------------------------------+
+| 3 | 5GB | 10GB | YES
|
++---+----------------------------+---------------------------+-------------------------------+
+| 4 | 10GB | 5GB | NO
|
++---+----------------------------+---------------------------+-------------------------------+
+| 5 | Any | 0GB | YES
|
++---+----------------------------+---------------------------+-------------------------------+
+
+Note that shrinking the Root disk is not supported via the service offering
resizing workflow. 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.
Review comment:
@DaanHoogland does this disclaimer suffice your concerns?
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