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Add support for timeouts for locks (#4377)

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This commit is contained in:
Frank Wessels
2017-08-31 11:29:22 -07:00
committed by deekoder
parent 93f126364e
commit 61e0b1454a
32 changed files with 1347 additions and 357 deletions
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32
cmd/lock-instrument.go
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@@ -178,6 +178,38 @@ func (n *nsLockMap) statusNoneToBlocked(param nsParam, lockSource, opsID string,
return nil
}
// Change the state of the lock from Blocked to none.
func (n *nsLockMap) statusBlockedToNone(param nsParam, lockSource, opsID string, readLock bool) error {
_, ok := n.debugLockMap[param]
if !ok {
return traceError(LockInfoVolPathMissing{param.volume, param.path})
}
// Check whether lock info entry for the given `opsID` exists.
lockInfo, ok := n.debugLockMap[param].lockInfo[opsID]
if !ok {
return traceError(LockInfoOpsIDNotFound{param.volume, param.path, opsID})
}
// Check whether lockSource is same.
if lockInfo.lockSource != lockSource {
return traceError(LockInfoOriginMismatch{param.volume, param.path, opsID, lockSource})
}
// Status of the lock should be set to "Blocked".
if lockInfo.status != blockedStatus {
return traceError(LockInfoStateNotBlocked{param.volume, param.path, opsID})
}
// Clear the status by removing the entry for the given `opsID`.
delete(n.debugLockMap[param].lockInfo, opsID)
// Update global lock stats.
n.counters.lockTimedOut()
// Update (volume, path) lock stats.
n.debugLockMap[param].counters.lockTimedOut()
return nil
}
// deleteLockInfoEntry - Deletes the lock information for given (volume, path).
// Called when nsLk.ref count is 0.
func (n *nsLockMap) deleteLockInfoEntryForVolumePath(param nsParam) error {