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fb96779a8a
This PR implements an object layer which combines input erasure sets of XL layers into a unified namespace. This object layer extends the existing erasure coded implementation, it is assumed in this design that providing > 16 disks is a static configuration as well i.e if you started the setup with 32 disks with 4 sets 8 disks per pack then you would need to provide 4 sets always. Some design details and restrictions: - Objects are distributed using consistent ordering to a unique erasure coded layer. - Each pack has its own dsync so locks are synchronized properly at pack (erasure layer). - Each pack still has a maximum of 16 disks requirement, you can start with multiple such sets statically. - Static sets set of disks and cannot be changed, there is no elastic expansion allowed. - Static sets set of disks and cannot be changed, there is no elastic removal allowed. - ListObjects() across sets can be noticeably slower since List happens on all servers, and is merged at this sets layer. Fixes #5465 Fixes #5464 Fixes #5461 Fixes #5460 Fixes #5459 Fixes #5458 Fixes #5460 Fixes #5488 Fixes #5489 Fixes #5497 Fixes #5496
109 lines
2.9 KiB
Go
109 lines
2.9 KiB
Go
/*
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* Minio Cloud Storage, (C) 2016 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package cmd
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import (
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"fmt"
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"os"
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"testing"
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"time"
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)
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// TestListLocksInfo - Test for listLocksInfo.
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func TestListLocksInfo(t *testing.T) {
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// reset global variables to start afresh.
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resetTestGlobals()
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// Initialize minio server config.
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rootPath, err := newTestConfig(globalMinioDefaultRegion)
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if err != nil {
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t.Fatal(err)
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}
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defer os.RemoveAll(rootPath)
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// Initializing new XL objectLayer.
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objAPI, _, xlErr := initTestXLObjLayer()
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if xlErr != nil {
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t.Fatalf("failed to init object layer")
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}
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// Make objLayer available to all internal services via globalObjectAPI.
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globalObjLayerMutex.Lock()
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globalObjectAPI = objAPI
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globalObjLayerMutex.Unlock()
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// Set globalIsXL to indicate that the setup uses an erasure code backend.
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// initialize NSLock.
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isDistXL := false
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initNSLock(isDistXL)
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var nsMutex *nsLockMap
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nsMutex = objAPI.(*xlSets).sets[0].nsMutex
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// Acquire a few locks to populate lock instrumentation.
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// Take 10 read locks on bucket1/prefix1/obj1
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for i := 0; i < 10; i++ {
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readLk := nsMutex.NewNSLock("bucket1", "prefix1/obj1")
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if readLk.GetRLock(newDynamicTimeout(60*time.Second, time.Second)) != nil {
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t.Errorf("Failed to get read lock on iteration %d", i)
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}
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}
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// Take write locks on bucket1/prefix/obj{11..19}
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for i := 0; i < 10; i++ {
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wrLk := nsMutex.NewNSLock("bucket1", fmt.Sprintf("prefix1/obj%d", 10+i))
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if wrLk.GetLock(newDynamicTimeout(60*time.Second, time.Second)) != nil {
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t.Errorf("Failed to get write lock on iteration %d", i)
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}
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}
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testCases := []struct {
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bucket string
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prefix string
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duration time.Duration
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numLocks int
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}{
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// Test 1 - Matches all the locks acquired above.
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{
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bucket: "bucket1",
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prefix: "prefix1",
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duration: time.Duration(0 * time.Second),
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numLocks: 20,
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},
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// Test 2 - Bucket doesn't match.
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{
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bucket: "bucket",
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prefix: "prefix1",
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duration: time.Duration(0 * time.Second),
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numLocks: 0,
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},
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// Test 3 - Prefix doesn't match.
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{
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bucket: "bucket1",
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prefix: "prefix11",
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duration: time.Duration(0 * time.Second),
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numLocks: 0,
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},
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}
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for i, test := range testCases {
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actual := listLocksInfo(test.bucket, test.prefix, test.duration)
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if len(actual) != test.numLocks {
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t.Errorf("Test %d - Expected %d locks but observed %d locks",
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i+1, test.numLocks, len(actual))
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}
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}
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}
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