CODEWITHSUNDEEP
google-cloud-storage
Ashley
Ashley

Reputation: 628

How do you perform a real 'move' operation of a GCS storage object, where real 'move' is one that maintains the Last Modified date?

When I move a Google Cloud Storage Object from one bucket to another bucket, or from one "folder" to another "folder" within the same bucket (i.e., a name identity change within the bucket), the Last Modified date is always changed to the date/time of the move.

I would like to move a storage object and have Google Cloud maintain the Last Modified time. If the storage object's contents has not changed, I do not want a move to change the metadata's Last Modified date/time.

I have tried the following tests, but none maintain Modified time:

In all cases, both the Last Modified and Created times change. I would expect at least the Last Modified time to remain unchanged just as it does in both Windows/Linux when there is a move operation.

Especially with cloud storage objects, I would think a positive value add would be date/time integrity, that at least some date/time would be tied to storage object content changes (without such changes that date/time would not change... usually this would be the Last Modified date/time).

The best option I could find so far is when using a Transfer Job with metadata preservation specified for Created time but the result is that GCS still modifies the destination Created/Modified times, but it carries over (copies) the original object's Created time as a new "Custom time" field which seems somewhat odd.

Upvotes: 1

Views: 792

Answers (1)

John Hanley
John Hanley

Reputation: 81424

  1. There is no Last Modified date in Cloud Storage. Objects cannot be modified therefore there cannot be a date that you modified the object. You can only change an object by creating a new object and copying the data. Even changing the name requires a copy operation.

  2. Cloud Storage does not support Move. That is emulated with Copy and Delete.

Upvotes: 2

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