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Description of problem¶

If there is no MDS to serve when a ceph tell cmd is executed, it is but obviously going to return an errno to the CLI and the API (like clients to fetch client sessions) used to return back error status code but with the changes in https://github.com/ceph/ceph/pull/52076, APIs (like `/api/cephfs/<fs_id>/clients`) would return 200 instead of a err status code (like 500) because the function get() in class CephFSClients would return an empty list i.e. it suppress the err. This might be helpful in cases where there is no MDS but it blocks to run negative tests where we expect to get the error status codes. Therefore it is needed to introduce a flag like `suppress_client_ls_errors` to facilitate sending back errors.

Environment¶

• ceph version string:
• Platform (OS/distro/release):
• Cluster details (nodes, monitors, OSDs):
• Did it happen on a stable environment or after a migration/upgrade?:
• Browser used (e.g.: Version 86.0.4240.198 (Official Build) (64-bit)):

How reproducible¶

Steps:

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Actual results¶

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Expected results¶

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Additional info¶

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