Details
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Task
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Resolution: Fixed
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Minor
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Lustre 2.8.0
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None
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16768
Description
The unlink cookies that the MDS sent to the client to track OST object unlinks are no longer needed since Lustre 2.4.0 (with OFD). Instead of sending the unlink cookies to the client and then to the OST, instead the MDS destroys OST objects directly, but only after the transaction is committed on the MDT.
Clients working with MDS versions 2.4.0 and later do not need to handle cookies, so the relevant code can be removed once we no longer need client interoperability with older servers (2.3.0 and older).
John made a patch http://review.whamcloud.com/12922 to clean this up already.