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.
312 lines
11 KiB
312 lines
11 KiB
package weed_server
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/seaweedfs/seaweedfs/weed/operation"
|
|
|
|
"google.golang.org/grpc"
|
|
|
|
"github.com/seaweedfs/seaweedfs/weed/pb"
|
|
"github.com/seaweedfs/seaweedfs/weed/security"
|
|
"github.com/seaweedfs/seaweedfs/weed/storage/backend"
|
|
"github.com/seaweedfs/seaweedfs/weed/storage/erasure_coding"
|
|
|
|
"golang.org/x/net/context"
|
|
|
|
"github.com/seaweedfs/seaweedfs/weed/glog"
|
|
"github.com/seaweedfs/seaweedfs/weed/pb/master_pb"
|
|
"github.com/seaweedfs/seaweedfs/weed/util"
|
|
)
|
|
|
|
func (vs *VolumeServer) GetMaster(ctx context.Context) pb.ServerAddress {
|
|
return vs.currentMaster
|
|
}
|
|
|
|
func (vs *VolumeServer) checkWithMaster() (err error) {
|
|
for {
|
|
for _, master := range vs.SeedMasterNodes {
|
|
err = operation.WithMasterServerClient(false, master, vs.grpcDialOption, func(masterClient master_pb.SeaweedClient) error {
|
|
resp, err := masterClient.GetMasterConfiguration(context.Background(), &master_pb.GetMasterConfigurationRequest{})
|
|
if err != nil {
|
|
return fmt.Errorf("get master %s configuration: %v", master, err)
|
|
}
|
|
vs.metricsAddress, vs.metricsIntervalSec = resp.MetricsAddress, int(resp.MetricsIntervalSeconds)
|
|
backend.LoadFromPbStorageBackends(resp.StorageBackends)
|
|
return nil
|
|
})
|
|
if err == nil {
|
|
return
|
|
} else {
|
|
glog.V(0).Infof("checkWithMaster %s: %v", master, err)
|
|
}
|
|
}
|
|
time.Sleep(1790 * time.Millisecond)
|
|
}
|
|
}
|
|
|
|
func (vs *VolumeServer) heartbeat() {
|
|
|
|
glog.V(0).Infof("Volume server start with seed master nodes: %v", vs.SeedMasterNodes)
|
|
vs.store.SetDataCenter(vs.dataCenter)
|
|
vs.store.SetRack(vs.rack)
|
|
|
|
grpcDialOption := security.LoadClientTLS(util.GetViper(), "grpc.volume")
|
|
|
|
var err error
|
|
var newLeader pb.ServerAddress
|
|
duplicateRetryCount := 0
|
|
for vs.isHeartbeating {
|
|
for _, master := range vs.SeedMasterNodes {
|
|
if newLeader != "" {
|
|
// the new leader may actually is the same master
|
|
// need to wait a bit before adding itself
|
|
time.Sleep(3 * time.Second)
|
|
master = newLeader
|
|
}
|
|
vs.store.MasterAddress = master
|
|
newLeader, err = vs.doHeartbeatWithRetry(master, grpcDialOption, time.Duration(vs.pulseSeconds)*time.Second, duplicateRetryCount)
|
|
if err != nil {
|
|
glog.V(0).Infof("heartbeat to %s error: %v", master, err)
|
|
|
|
// Check if this is a duplicate UUID retry error
|
|
if strings.Contains(err.Error(), "duplicate UUIDs detected, retrying connection") {
|
|
duplicateRetryCount++
|
|
retryDelay := time.Duration(1<<(duplicateRetryCount-1)) * 2 * time.Second // exponential backoff: 2s, 4s, 8s
|
|
glog.V(0).Infof("Waiting %v before retrying due to duplicate UUID detection...", retryDelay)
|
|
time.Sleep(retryDelay)
|
|
} else {
|
|
// Regular error, reset duplicate retry count
|
|
duplicateRetryCount = 0
|
|
time.Sleep(time.Duration(vs.pulseSeconds) * time.Second)
|
|
}
|
|
|
|
newLeader = ""
|
|
vs.store.MasterAddress = ""
|
|
} else {
|
|
// Successful connection, reset retry count
|
|
duplicateRetryCount = 0
|
|
}
|
|
if !vs.isHeartbeating {
|
|
break
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func (vs *VolumeServer) StopHeartbeat() (isAlreadyStopping bool) {
|
|
if !vs.isHeartbeating {
|
|
return true
|
|
}
|
|
vs.isHeartbeating = false
|
|
close(vs.stopChan)
|
|
return false
|
|
}
|
|
|
|
func (vs *VolumeServer) doHeartbeat(masterAddress pb.ServerAddress, grpcDialOption grpc.DialOption, sleepInterval time.Duration) (newLeader pb.ServerAddress, err error) {
|
|
return vs.doHeartbeatWithRetry(masterAddress, grpcDialOption, sleepInterval, 0)
|
|
}
|
|
|
|
func (vs *VolumeServer) doHeartbeatWithRetry(masterAddress pb.ServerAddress, grpcDialOption grpc.DialOption, sleepInterval time.Duration, duplicateRetryCount int) (newLeader pb.ServerAddress, err error) {
|
|
|
|
ctx, cancel := context.WithCancel(context.Background())
|
|
defer cancel()
|
|
|
|
grpcConnection, err := pb.GrpcDial(ctx, masterAddress.ToGrpcAddress(), false, grpcDialOption)
|
|
if err != nil {
|
|
return "", fmt.Errorf("fail to dial %s : %v", masterAddress, err)
|
|
}
|
|
defer grpcConnection.Close()
|
|
|
|
client := master_pb.NewSeaweedClient(grpcConnection)
|
|
stream, err := client.SendHeartbeat(ctx)
|
|
if err != nil {
|
|
glog.V(0).Infof("SendHeartbeat to %s: %v", masterAddress, err)
|
|
return "", err
|
|
}
|
|
glog.V(0).Infof("Heartbeat to: %v", masterAddress)
|
|
vs.currentMaster = masterAddress
|
|
|
|
doneChan := make(chan error, 1)
|
|
|
|
go func() {
|
|
for {
|
|
in, err := stream.Recv()
|
|
if err != nil {
|
|
doneChan <- err
|
|
return
|
|
}
|
|
if len(in.DuplicatedUuids) > 0 {
|
|
var duplicateDir []string
|
|
for _, loc := range vs.store.Locations {
|
|
for _, uuid := range in.DuplicatedUuids {
|
|
if uuid == loc.DirectoryUuid {
|
|
duplicateDir = append(duplicateDir, loc.Directory)
|
|
}
|
|
}
|
|
}
|
|
|
|
// Implement retry logic for potential race conditions
|
|
const maxRetries = 3
|
|
if duplicateRetryCount < maxRetries {
|
|
retryDelay := time.Duration(1<<duplicateRetryCount) * 2 * time.Second // exponential backoff: 2s, 4s, 8s
|
|
glog.Errorf("Master reported duplicate volume directories: %v (retry %d/%d)", duplicateDir, duplicateRetryCount+1, maxRetries)
|
|
glog.Errorf("This might be due to a race condition during reconnection. Waiting %v before retrying...", retryDelay)
|
|
|
|
// Return error to trigger retry with increased count
|
|
doneChan <- fmt.Errorf("duplicate UUIDs detected, retrying connection (attempt %d/%d)", duplicateRetryCount+1, maxRetries)
|
|
return
|
|
} else {
|
|
// After max retries, this is likely a real duplicate
|
|
glog.Errorf("Shut down Volume Server due to persistent duplicate volume directories after %d retries: %v", maxRetries, duplicateDir)
|
|
glog.Errorf("Please check if another volume server is using the same directory")
|
|
os.Exit(1)
|
|
}
|
|
}
|
|
volumeOptsChanged := false
|
|
if vs.store.GetPreallocate() != in.GetPreallocate() {
|
|
vs.store.SetPreallocate(in.GetPreallocate())
|
|
volumeOptsChanged = true
|
|
}
|
|
if in.GetVolumeSizeLimit() != 0 && vs.store.GetVolumeSizeLimit() != in.GetVolumeSizeLimit() {
|
|
vs.store.SetVolumeSizeLimit(in.GetVolumeSizeLimit())
|
|
volumeOptsChanged = true
|
|
}
|
|
if volumeOptsChanged {
|
|
if vs.store.MaybeAdjustVolumeMax() {
|
|
if err = stream.Send(vs.store.CollectHeartbeat()); err != nil {
|
|
glog.V(0).Infof("Volume Server Failed to talk with master %s: %v", vs.currentMaster, err)
|
|
return
|
|
}
|
|
}
|
|
}
|
|
if in.GetLeader() != "" && string(vs.currentMaster) != in.GetLeader() {
|
|
glog.V(0).Infof("Volume Server found a new master newLeader: %v instead of %v", in.GetLeader(), vs.currentMaster)
|
|
newLeader = pb.ServerAddress(in.GetLeader())
|
|
doneChan <- nil
|
|
return
|
|
}
|
|
}
|
|
}()
|
|
|
|
if err = stream.Send(vs.store.CollectHeartbeat()); err != nil {
|
|
glog.V(0).Infof("Volume Server Failed to talk with master %s: %v", masterAddress, err)
|
|
return "", err
|
|
}
|
|
|
|
if err = stream.Send(vs.store.CollectErasureCodingHeartbeat()); err != nil {
|
|
glog.V(0).Infof("Volume Server Failed to talk with master %s: %v", masterAddress, err)
|
|
return "", err
|
|
}
|
|
|
|
volumeTickChan := time.NewTicker(sleepInterval)
|
|
defer volumeTickChan.Stop()
|
|
ecShardTickChan := time.NewTicker(17 * sleepInterval)
|
|
defer ecShardTickChan.Stop()
|
|
dataCenter := vs.store.GetDataCenter()
|
|
rack := vs.store.GetRack()
|
|
ip := vs.store.Ip
|
|
port := uint32(vs.store.Port)
|
|
for {
|
|
select {
|
|
case volumeMessage := <-vs.store.NewVolumesChan:
|
|
deltaBeat := &master_pb.Heartbeat{
|
|
Ip: ip,
|
|
Port: port,
|
|
DataCenter: dataCenter,
|
|
Rack: rack,
|
|
NewVolumes: []*master_pb.VolumeShortInformationMessage{
|
|
&volumeMessage,
|
|
},
|
|
}
|
|
glog.V(0).Infof("volume server %s:%d adds volume %d", vs.store.Ip, vs.store.Port, volumeMessage.Id)
|
|
if err = stream.Send(deltaBeat); err != nil {
|
|
glog.V(0).Infof("Volume Server Failed to update to master %s: %v", masterAddress, err)
|
|
return "", err
|
|
}
|
|
case ecShardMessage := <-vs.store.NewEcShardsChan:
|
|
deltaBeat := &master_pb.Heartbeat{
|
|
Ip: ip,
|
|
Port: port,
|
|
DataCenter: dataCenter,
|
|
Rack: rack,
|
|
NewEcShards: []*master_pb.VolumeEcShardInformationMessage{
|
|
&ecShardMessage,
|
|
},
|
|
}
|
|
glog.V(0).Infof("volume server %s:%d adds ec shard %d:%d", vs.store.Ip, vs.store.Port, ecShardMessage.Id,
|
|
erasure_coding.ShardBits(ecShardMessage.EcIndexBits).ShardIds())
|
|
if err = stream.Send(deltaBeat); err != nil {
|
|
glog.V(0).Infof("Volume Server Failed to update to master %s: %v", masterAddress, err)
|
|
return "", err
|
|
}
|
|
case volumeMessage := <-vs.store.DeletedVolumesChan:
|
|
deltaBeat := &master_pb.Heartbeat{
|
|
Ip: ip,
|
|
Port: port,
|
|
DataCenter: dataCenter,
|
|
Rack: rack,
|
|
DeletedVolumes: []*master_pb.VolumeShortInformationMessage{
|
|
&volumeMessage,
|
|
},
|
|
}
|
|
glog.V(0).Infof("volume server %s:%d deletes volume %d", vs.store.Ip, vs.store.Port, volumeMessage.Id)
|
|
if err = stream.Send(deltaBeat); err != nil {
|
|
glog.V(0).Infof("Volume Server Failed to update to master %s: %v", masterAddress, err)
|
|
return "", err
|
|
}
|
|
case ecShardMessage := <-vs.store.DeletedEcShardsChan:
|
|
deltaBeat := &master_pb.Heartbeat{
|
|
Ip: ip,
|
|
Port: port,
|
|
DataCenter: dataCenter,
|
|
Rack: rack,
|
|
DeletedEcShards: []*master_pb.VolumeEcShardInformationMessage{
|
|
&ecShardMessage,
|
|
},
|
|
}
|
|
glog.V(0).Infof("volume server %s:%d deletes ec shard %d:%d", vs.store.Ip, vs.store.Port, ecShardMessage.Id,
|
|
erasure_coding.ShardBits(ecShardMessage.EcIndexBits).ShardIds())
|
|
if err = stream.Send(deltaBeat); err != nil {
|
|
glog.V(0).Infof("Volume Server Failed to update to master %s: %v", masterAddress, err)
|
|
return "", err
|
|
}
|
|
case <-volumeTickChan.C:
|
|
glog.V(4).Infof("volume server %s:%d heartbeat", vs.store.Ip, vs.store.Port)
|
|
vs.store.MaybeAdjustVolumeMax()
|
|
if err = stream.Send(vs.store.CollectHeartbeat()); err != nil {
|
|
glog.V(0).Infof("Volume Server Failed to talk with master %s: %v", masterAddress, err)
|
|
return "", err
|
|
}
|
|
case <-ecShardTickChan.C:
|
|
glog.V(4).Infof("volume server %s:%d ec heartbeat", vs.store.Ip, vs.store.Port)
|
|
if err = stream.Send(vs.store.CollectErasureCodingHeartbeat()); err != nil {
|
|
glog.V(0).Infof("Volume Server Failed to talk with master %s: %v", masterAddress, err)
|
|
return "", err
|
|
}
|
|
case err = <-doneChan:
|
|
return
|
|
case <-vs.stopChan:
|
|
var volumeMessages []*master_pb.VolumeInformationMessage
|
|
emptyBeat := &master_pb.Heartbeat{
|
|
Ip: ip,
|
|
Port: port,
|
|
PublicUrl: vs.store.PublicUrl,
|
|
MaxFileKey: uint64(0),
|
|
DataCenter: dataCenter,
|
|
Rack: rack,
|
|
Volumes: volumeMessages,
|
|
HasNoVolumes: len(volumeMessages) == 0,
|
|
}
|
|
glog.V(1).Infof("volume server %s:%d stops and deletes all volumes", vs.store.Ip, vs.store.Port)
|
|
if err = stream.Send(emptyBeat); err != nil {
|
|
glog.V(0).Infof("Volume Server Failed to update to master %s: %v", masterAddress, err)
|
|
return "", err
|
|
}
|
|
return
|
|
}
|
|
}
|
|
}
|