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IBM System Storage Ideas Portal


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Status Submitted
Created by Guest
Created on Apr 1, 2026

Allow "-noformat yes" option when creating volumes with CSI from OpenShift

When creating volumes in OpenShift, the default behavior is to format it during creation. Although the volume can be accessed immediately and formatting takes place in the background, it can take a long time to complete, especially for large volumes. My customer would like to be able to pass the "-no format yes" option from OpenShift via CSI to FlashSystem when creating a volume.

During migration to COP especially, there could be dozens of format operations underway at the same time. There is a concern that it could lead to a measurable slow down. More importantly though, there is a concern the bitmap memory becomes full, and they lose the ability to create volumes until some of the format operations have completed. This was observed by the customer during initial vvol testing a few years ago. Virtualize limits are higher now, but the way OCP creates many volumes during normal operation is a concern.

Idea priority High