You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
349 lines
11 KiB
349 lines
11 KiB
/*
|
|
* MinIO Cloud Storage, (C) 2016 MinIO, Inc.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
package cmd
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"os"
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/minio/minio/cmd/logger"
|
|
"github.com/minio/minio/pkg/sync/errgroup"
|
|
)
|
|
|
|
var printEndpointError = func() func(Endpoint, error) {
|
|
var mutex sync.Mutex
|
|
printOnce := make(map[Endpoint]map[string]bool)
|
|
|
|
return func(endpoint Endpoint, err error) {
|
|
reqInfo := (&logger.ReqInfo{}).AppendTags("endpoint", endpoint.String())
|
|
ctx := logger.SetReqInfo(context.Background(), reqInfo)
|
|
mutex.Lock()
|
|
defer mutex.Unlock()
|
|
m, ok := printOnce[endpoint]
|
|
if !ok {
|
|
m = make(map[string]bool)
|
|
m[err.Error()] = true
|
|
printOnce[endpoint] = m
|
|
logger.LogAlwaysIf(ctx, err)
|
|
return
|
|
}
|
|
if m[err.Error()] {
|
|
return
|
|
}
|
|
m[err.Error()] = true
|
|
logger.LogAlwaysIf(ctx, err)
|
|
}
|
|
}()
|
|
|
|
// Migrates backend format of local disks.
|
|
func formatXLMigrateLocalEndpoints(endpoints EndpointList) error {
|
|
g := errgroup.WithNErrs(len(endpoints))
|
|
for index, endpoint := range endpoints {
|
|
if !endpoint.IsLocal {
|
|
continue
|
|
}
|
|
index := index
|
|
g.Go(func() error {
|
|
epPath := endpoints[index].Path
|
|
formatPath := pathJoin(epPath, minioMetaBucket, formatConfigFile)
|
|
if _, err := os.Stat(formatPath); err != nil {
|
|
if os.IsNotExist(err) {
|
|
return nil
|
|
}
|
|
return fmt.Errorf("unable to access (%s) %s", formatPath, err)
|
|
}
|
|
return formatXLMigrate(epPath)
|
|
}, index)
|
|
}
|
|
for _, err := range g.Wait() {
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// Cleans up tmp directory of local disks.
|
|
func formatXLCleanupTmpLocalEndpoints(endpoints EndpointList) error {
|
|
g := errgroup.WithNErrs(len(endpoints))
|
|
for index, endpoint := range endpoints {
|
|
if !endpoint.IsLocal {
|
|
continue
|
|
}
|
|
index := index
|
|
g.Go(func() error {
|
|
epPath := endpoints[index].Path
|
|
// If disk is not formatted there is nothing to be cleaned up.
|
|
formatPath := pathJoin(epPath, minioMetaBucket, formatConfigFile)
|
|
if _, err := os.Stat(formatPath); err != nil {
|
|
if os.IsNotExist(err) {
|
|
return nil
|
|
}
|
|
return fmt.Errorf("unable to access (%s) %s", formatPath, err)
|
|
}
|
|
if _, err := os.Stat(pathJoin(epPath, minioMetaTmpBucket+"-old")); err != nil {
|
|
if !os.IsNotExist(err) {
|
|
return fmt.Errorf("unable to access (%s) %s",
|
|
pathJoin(epPath, minioMetaTmpBucket+"-old"),
|
|
err)
|
|
}
|
|
}
|
|
|
|
// Need to move temporary objects left behind from previous run of minio
|
|
// server to a unique directory under `minioMetaTmpBucket-old` to clean
|
|
// up `minioMetaTmpBucket` for the current run.
|
|
//
|
|
// /disk1/.minio.sys/tmp-old/
|
|
// |__ 33a58b40-aecc-4c9f-a22f-ff17bfa33b62
|
|
// |__ e870a2c1-d09c-450c-a69c-6eaa54a89b3e
|
|
//
|
|
// In this example, `33a58b40-aecc-4c9f-a22f-ff17bfa33b62` directory contains
|
|
// temporary objects from one of the previous runs of minio server.
|
|
tmpOld := pathJoin(epPath, minioMetaTmpBucket+"-old", mustGetUUID())
|
|
if err := renameAll(pathJoin(epPath, minioMetaTmpBucket),
|
|
tmpOld); err != nil && err != errFileNotFound {
|
|
return fmt.Errorf("unable to rename (%s -> %s) %s",
|
|
pathJoin(epPath, minioMetaTmpBucket),
|
|
tmpOld,
|
|
err)
|
|
}
|
|
|
|
// Removal of tmp-old folder is backgrounded completely.
|
|
go removeAll(pathJoin(epPath, minioMetaTmpBucket+"-old"))
|
|
|
|
if err := mkdirAll(pathJoin(epPath, minioMetaTmpBucket), 0777); err != nil {
|
|
return fmt.Errorf("unable to create (%s) %s",
|
|
pathJoin(epPath, minioMetaTmpBucket),
|
|
err)
|
|
}
|
|
return nil
|
|
}, index)
|
|
}
|
|
for _, err := range g.Wait() {
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// validate reference format against list of XL formats.
|
|
func validateXLFormats(format *formatXLV3, formats []*formatXLV3, endpoints EndpointList, setCount, drivesPerSet int) error {
|
|
for i := range formats {
|
|
if formats[i] == nil {
|
|
continue
|
|
}
|
|
if err := formatXLV3Check(format, formats[i]); err != nil {
|
|
return fmt.Errorf("%s format error: %s", endpoints[i], err)
|
|
}
|
|
}
|
|
if len(format.XL.Sets) != setCount {
|
|
return fmt.Errorf("Current backend format is inconsistent with input args (%s), Expected set count %d, got %d", endpoints, len(format.XL.Sets), setCount)
|
|
}
|
|
if len(format.XL.Sets[0]) != drivesPerSet {
|
|
return fmt.Errorf("Current backend format is inconsistent with input args (%s), Expected drive count per set %d, got %d", endpoints, len(format.XL.Sets[0]), drivesPerSet)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// Following error message is added to fix a regression in release
|
|
// RELEASE.2018-03-16T22-52-12Z after migrating v1 to v2 to v3. This
|
|
// migration failed to capture '.This' field properly which indicates
|
|
// the disk UUID association. Below error message is returned when
|
|
// we see this situation in format.json, for more info refer
|
|
// https://github.com/minio/minio/issues/5667
|
|
var errXLV3ThisEmpty = fmt.Errorf("XL format version 3 has This field empty")
|
|
|
|
// connect to list of endpoints and load all XL disk formats, validate the formats are correct
|
|
// and are in quorum, if no formats are found attempt to initialize all of them for the first
|
|
// time. additionally make sure to close all the disks used in this attempt.
|
|
func connectLoadInitFormats(retryCount int, firstDisk bool, endpoints EndpointList, setCount, drivesPerSet int) (*formatXLV3, error) {
|
|
// Initialize all storage disks
|
|
storageDisks, errs := initStorageDisksWithErrors(endpoints)
|
|
defer closeStorageDisks(storageDisks)
|
|
for i, err := range errs {
|
|
if err != nil && err != errDiskNotFound {
|
|
return nil, fmt.Errorf("Disk %s: %w", endpoints[i], err)
|
|
}
|
|
}
|
|
|
|
// Attempt to load all `format.json` from all disks.
|
|
formatConfigs, sErrs := loadFormatXLAll(storageDisks)
|
|
// Check if we have
|
|
for i, sErr := range sErrs {
|
|
if _, ok := formatCriticalErrors[sErr]; ok {
|
|
return nil, fmt.Errorf("Disk %s: %s", endpoints[i], sErr)
|
|
}
|
|
}
|
|
|
|
// Connect to all storage disks, a connection failure will be
|
|
// only logged after some retries.
|
|
for _, disk := range storageDisks {
|
|
if disk != nil {
|
|
connectErr := disk.LastError()
|
|
if connectErr != nil && retryCount >= 5 {
|
|
logger.Info("Unable to connect to %s: %v\n", disk.String(), connectErr.Error())
|
|
}
|
|
}
|
|
}
|
|
|
|
// Pre-emptively check if one of the formatted disks
|
|
// is invalid. This function returns success for the
|
|
// most part unless one of the formats is not consistent
|
|
// with expected XL format. For example if a user is
|
|
// trying to pool FS backend into an XL set.
|
|
if err := checkFormatXLValues(formatConfigs); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// All disks report unformatted we should initialized everyone.
|
|
if shouldInitXLDisks(sErrs) && firstDisk {
|
|
// Initialize erasure code format on disks
|
|
format, err := initFormatXL(context.Background(), storageDisks, setCount, drivesPerSet)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
// Assign globalDeploymentID on first run for the
|
|
// minio server managing the first disk
|
|
globalDeploymentID = format.ID
|
|
}
|
|
|
|
// Return error when quorum unformatted disks - indicating we are
|
|
// waiting for first server to be online.
|
|
if quorumUnformattedDisks(sErrs) && !firstDisk {
|
|
return nil, errNotFirstDisk
|
|
}
|
|
|
|
// Return error when quorum unformatted disks but waiting for rest
|
|
// of the servers to be online.
|
|
if quorumUnformattedDisks(sErrs) && firstDisk {
|
|
return nil, errFirstDiskWait
|
|
}
|
|
|
|
// Following function is added to fix a regressions which was introduced
|
|
// in release RELEASE.2018-03-16T22-52-12Z after migrating v1 to v2 to v3.
|
|
// This migration failed to capture '.This' field properly which indicates
|
|
// the disk UUID association. Below function is called to handle and fix
|
|
// this regression, for more info refer https://github.com/minio/minio/issues/5667
|
|
if err := fixFormatXLV3(storageDisks, endpoints, formatConfigs); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// If any of the .This field is still empty, we return error.
|
|
if formatXLV3ThisEmpty(formatConfigs) {
|
|
return nil, errXLV3ThisEmpty
|
|
}
|
|
|
|
format, err := getFormatXLInQuorum(formatConfigs)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// Validate all format configs with reference format.
|
|
if err = validateXLFormats(format, formatConfigs, endpoints, setCount, drivesPerSet); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// Get the deploymentID if set.
|
|
format.ID, err = formatXLGetDeploymentID(format, formatConfigs)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if format.ID == "" {
|
|
// Not a first disk, wait until first disk fixes deploymentID
|
|
if !firstDisk {
|
|
return nil, errNotFirstDisk
|
|
}
|
|
if err = formatXLFixDeploymentID(endpoints, storageDisks, format); err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
globalDeploymentID = format.ID
|
|
|
|
if err = formatXLFixLocalDeploymentID(endpoints, storageDisks, format); err != nil {
|
|
return nil, err
|
|
}
|
|
return format, nil
|
|
}
|
|
|
|
// Format disks before initialization of object layer.
|
|
func waitForFormatXL(firstDisk bool, endpoints EndpointList, setCount, disksPerSet int) (format *formatXLV3, err error) {
|
|
if len(endpoints) == 0 || setCount == 0 || disksPerSet == 0 {
|
|
return nil, errInvalidArgument
|
|
}
|
|
|
|
if err = formatXLMigrateLocalEndpoints(endpoints); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if err = formatXLCleanupTmpLocalEndpoints(endpoints); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// Done channel is used to close any lingering retry routine, as soon
|
|
// as this function returns.
|
|
doneCh := make(chan struct{})
|
|
|
|
// Indicate to our retry routine to exit cleanly, upon this function return.
|
|
defer close(doneCh)
|
|
|
|
// prepare getElapsedTime() to calculate elapsed time since we started trying formatting disks.
|
|
// All times are rounded to avoid showing milli, micro and nano seconds
|
|
formatStartTime := time.Now().Round(time.Second)
|
|
getElapsedTime := func() string {
|
|
return time.Now().Round(time.Second).Sub(formatStartTime).String()
|
|
}
|
|
|
|
// Wait on the jitter retry loop.
|
|
retryTimerCh := newRetryTimerSimple(doneCh)
|
|
for {
|
|
select {
|
|
case retryCount := <-retryTimerCh:
|
|
format, err := connectLoadInitFormats(retryCount, firstDisk, endpoints, setCount, disksPerSet)
|
|
if err != nil {
|
|
switch err {
|
|
case errNotFirstDisk:
|
|
// Fresh setup, wait for first server to be up.
|
|
logger.Info("Waiting for the first server to format the disks.")
|
|
continue
|
|
case errFirstDiskWait:
|
|
// Fresh setup, wait for other servers to come up.
|
|
logger.Info("Waiting for all other servers to be online to format the disks.")
|
|
continue
|
|
case errXLReadQuorum:
|
|
// no quorum available continue to wait for minimum number of servers.
|
|
logger.Info("Waiting for a minimum of %d disks to come online (elapsed %s)\n", len(endpoints)/2, getElapsedTime())
|
|
continue
|
|
case errXLV3ThisEmpty:
|
|
// need to wait for this error to be healed, so continue.
|
|
continue
|
|
default:
|
|
// For all other unhandled errors we exit and fail.
|
|
return nil, err
|
|
}
|
|
}
|
|
return format, nil
|
|
case <-globalOSSignalCh:
|
|
return nil, fmt.Errorf("Initializing data volumes gracefully stopped")
|
|
}
|
|
}
|
|
}
|
|
|