8000 How to Prevent Metadata Loss When Removing PV Used for Default Disk · Issue #1700 · Altinity/clickhouse-operator · GitHub

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How to Prevent Metadata Loss When Removing PV Used for Default Disk #1700

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sky9611 opened this issue May 7, 2025 · 0 comments

sky9611 commented

We’re running into an issue where the existing PVC is too large and we need to decrease our storage to reduce COGs. Our plan is:

Provision a new, smaller PV
Migrate all data from the old PV to the new one
Delete the oversized PV

For step 1 & 2, we achieve them by following these two:

Now, for step 3 (removing the old PV), as mentioned in #1381, changing default disk would cause table metadata loss.

Does anyone have a recommended, safe procedure for deleting the old PV (especially the one used for default disk) without losing table metadata?

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