fix: expire locks only on participating lockers (#11335)

additionally also add a new ForceUnlock API, to
allow forcibly unlocking locks if possible.

cmd/admin-handlers.go

@@ -42,6 +42,7 @@ import (
 	"github.com/minio/minio/cmd/logger/message/log"
 	"github.com/minio/minio/pkg/auth"
 	"github.com/minio/minio/pkg/bandwidth"
+	"github.com/minio/minio/pkg/dsync"
 	"github.com/minio/minio/pkg/handlers"
 	iampolicy "github.com/minio/minio/pkg/iam/policy"
 	"github.com/minio/minio/pkg/madmin"
@@ -403,6 +404,45 @@ type PeerLocks struct {
 	Locks map[string][]lockRequesterInfo
 }
 
+// ForceUnlockHandler force unlocks requested resource
+func (a adminAPIHandlers) ForceUnlockHandler(w http.ResponseWriter, r *http.Request) {
+	ctx := newContext(r, w, "ForceUnlock")
+
+	defer logger.AuditLog(w, r, "ForceUnlock", mustGetClaimsFromToken(r))
+
+	objectAPI, _ := validateAdminReq(ctx, w, r, iampolicy.ForceUnlockAdminAction)
+	if objectAPI == nil {
+		return
+	}
+
+	z, ok := objectAPI.(*erasureServerPools)
+	if !ok {
+		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL)
+		return
+	}
+
+	vars := mux.Vars(r)
+
+	var args dsync.LockArgs
+	lockersMap := make(map[string]dsync.NetLocker)
+	for _, path := range strings.Split(vars["paths"], ",") {
+		if path == "" {
+			continue
+		}
+		args.Resources = append(args.Resources, path)
+		lockers, _ := z.serverPools[0].getHashedSet(path).getLockers()
+		for _, locker := range lockers {
+			if locker != nil {
+				lockersMap[locker.String()] = locker
+			}
+		}
+	}
+
+	for _, locker := range lockersMap {
+		locker.ForceUnlock(ctx, args)
+	}
+}
+
 // TopLocksHandler Get list of locks in use
 func (a adminAPIHandlers) TopLocksHandler(w http.ResponseWriter, r *http.Request) {
 	ctx := newContext(r, w, "TopLocks")