"Lock reclaim failed!" after cluster fail over

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Hi-

Part of our internal testing involves performing server
fail-over while under load. On regular occasion, we see
Linux clients (post 4.0 kernels) report “Lock reclaim
failed!” but the wire capture looks unremarkable.

I’ve instrumented a Linux client, and both the recovery
open and reclaim_locks calls return 0, the workload
does not report any problem, yet the client is still
reporting a failure.

Delegation on the server is disabled during the test.

Any opinions about why the client is reporting a
failure, or where to explore next?


—
Chuck Lever



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