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Chris Lu
f8caaa4464
* mount: renew POSIX lock leases via keepalive The mount tracks the inode keys it holds locks on and a background loop renews its session lease (KEEP_ALIVE) with each key's owner filer every 5s, within the filer's 15s TTL. A live mount is never reaped; a dead one stops renewing and owners reclaim its locks. Tracking is a superset: holds are added on grant and dropped only on owner release, so a still held lock is never under-renewed. * mount,filer: re-assert held POSIX locks via keepalive The owner filer holds POSIX advisory locks as in-memory soft state, so a key's owner change (ring rebalance) or an owner restart lost or stranded them: the new or restarted owner was blind to existing holders and would double-grant. Make the keepalive carry the mount's held lock ranges per key. The mount mirrors its own granted locks (posixOwn), and each tick re-asserts them to the key's current owner, which rebuilds that session's locks from the assertion — self -healing after a takeover or restart. The owner arbitrates re-asserted locks against other sessions so it never double-grants; a lock that lost a migration race is reported, not forced. A bare keepalive (no ranges) still just renews.