dcache: reject access to files with nearline QoS #7676
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Motivation: If file has QoS policy "HSM-only" then dCache should reject the access to the file, even if file is still available on disk (as transition might take some time). Modification: - Update QoS policy engine to reflect policy in the namespace attributes - Update Transfer to request policy state (as an indicate of applied policy) and reject read transfers if access latency is nearline. Result: dCache behavior compliant with selected QoS policy. Acked-by: Lea Morschel Acked-by: Dmitry Litvintsev Target: master Require-book: no Require-notes: yes (cherry picked from commit 1a3c12e) Signed-off-by: Tigran Mkrtchyan <[email protected]>
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Motivation:
If file has QoS policy "HSM-only" then dCache should reject the access to the file, even if file is still available on disk (as transition might take some time).
Modification:
Result:
dCache behavior compliant with selected QoS policy.
Acked-by: Lea Morschel
Acked-by: Dmitry Litvintsev
Target: master
Require-book: no
Require-notes: yes
(cherry picked from commit 1a3c12e)