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register ec shards to each data node

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This commit is contained in:
Chris Lu 2019-05-23 22:51:18 -07:00
parent 4659d80035
commit 8a96445f40
2 changed files with 49 additions and 2 deletions
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10
weed/storage/erasure_coding/ec_volume_info.go
View file

@ -40,6 +40,16 @@ func (ecInfo *EcVolumeInfo) ShardIds() (ret []ShardId) {
return
}
func (ecInfo *EcVolumeInfo) Minus(other *EcVolumeInfo) (*EcVolumeInfo) {
ret := &EcVolumeInfo{
VolumeId: ecInfo.VolumeId,
Collection: ecInfo.Collection,
shardIds: ecInfo.shardIds &^ other.shardIds,
}
return ret
}
func (ecInfo *EcVolumeInfo) ToVolumeEcShardInformationMessage() (ret []*master_pb.VolumeEcShardInformationMessage) {
for _, shard := range ecInfo.ShardIds() {
ret = append(ret, &master_pb.VolumeEcShardInformationMessage{

41
weed/topology/data_node_ec.go
View file

@ -2,6 +2,7 @@ package topology
import (
"github.com/chrislusf/seaweedfs/weed/storage/erasure_coding"
"github.com/chrislusf/seaweedfs/weed/storage/needle"
)
func (dn *DataNode) GetEcShards() (ret []*erasure_coding.EcVolumeInfo) {
@ -14,7 +15,43 @@ func (dn *DataNode) GetEcShards() (ret []*erasure_coding.EcVolumeInfo) {
}
func (dn *DataNode) UpdateEcShards(actualShards []*erasure_coding.EcVolumeInfo) (newShards, deletedShards []*erasure_coding.EcVolumeInfo) {
dn.ecShardsLock.Lock()
dn.ecShardsLock.Unlock()
// prepare the new ec shard map
actualEcShardMap := make(map[needle.VolumeId]*erasure_coding.EcVolumeInfo)
for _, ecShards := range actualShards {
actualEcShardMap[ecShards.VolumeId]= ecShards
}
// found out the newShards and deletedShards
dn.ecShardsLock.RLock()
for vid, ecShards := range dn.ecShards{
if actualEcShards, ok := actualEcShardMap[vid]; !ok {
// dn registered ec shards not found in the new set of ec shards
deletedShards = append(deletedShards, ecShards)
} else {
// found, but maybe the actual shard could be missing
a := actualEcShards.Minus(ecShards)
if len(a.ShardIds())>0 {
newShards = append(newShards, a)
}
d := ecShards.Minus(actualEcShards)
if len(d.ShardIds())>0 {
deletedShards = append(deletedShards, d)
}
}
}
for _, ecShards := range actualShards {
if _, found := dn.ecShards[ecShards.VolumeId]; !found {
newShards = append(newShards, ecShards)
}
}
dn.ecShardsLock.RUnlock()
if len(newShards)>0 || len(deletedShards)>0{
// if changed, set to the new ec shard map
dn.ecShardsLock.Lock()
dn.ecShards = actualEcShardMap
dn.ecShardsLock.Unlock()
}
return
}