Torch Object Storage
Torch Object Storage
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- Documentation
Torch Object StorageSDK ReferenceGoBucket InterfaceManage Bucket ConfigurationManaging Cross-Region Replication (Go SDK)
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Download PDFManage Bucket Configuration
Managing Cross-Region Replication (Go SDK)
Copy pageDownload PDFManaging Cross-Region Replication (Go SDK)
TOS supports cross-region replication, enabling you to copy objects from one region to buckets in other regions. After cross-region replication rules are enabled, when you upload a new file to the source bucket, TOS automatically synchronizes the file to the destination bucket. This feature is designed to meet the requirements for remote disaster recovery and data replication.
Configure Cross-Region Replication Rules
Precautions
- The corresponding files will be synchronized only after cross-region rules are enabled.
- Cross-region replication utilizes an asynchronous replication mechanism. Depending on the size of your files, the required time may range from several minutes to several hours.
- A maximum of 100 cross-region replication rules can be created for a single storage bucket.
- Cross-region replication can only be enabled when the versioning status of the source bucket and the destination bucket is identical.
- To configure cross-region replication rules for a bucket, you must, by default, be the bucket owner.
- During CRR task execution, if both StorageClassType and StorageClassInheritDirectiveType are configured, the settings of StorageClassType shall take precedence.
- When only StorageClassInheritDirectiveType is set, if the configuration value is StorageClassIDSourceObject, it will be the same as the source object; if the configuration value is StorageClassIDDestinationBucket, it will be the same as the destination bucket.
- When neither StorageClassType nor StorageClassInheritDirectiveType is specified, the default policy is to align with the storage class of the target bucket.
Sample Code
The following code is used to configure cross-region replication rules for the bucket.
package main
import (
"context"
"fmt"
"github.com/volcengine/ve-tos-golang-sdk/v2/tos"
"github.com/volcengine/ve-tos-golang-sdk/v2/tos/enum"
)
func checkErr(err error) {
if err != nil {
if serverErr, ok := err.(*tos.TosServerError); ok {
fmt.Println("Error:", serverErr.Error())
fmt.Println("Request ID:", serverErr.RequestID)
fmt.Println("Response Status Code:", serverErr.StatusCode)
fmt.Println("Response Header:", serverErr.Header)
fmt.Println("Response Err Code:", serverErr.Code)
fmt.Println("Response Err Msg:", serverErr.Message)
} else {
fmt.Println("Error:", err)
}
panic(err)
}
}
func main() {
var (
accessKey = os.Getenv("TOS_ACCESS_KEY")
secretKey = os.Getenv("TOS_SECRET_KEY")
endpoint = "https://tos-cn-beijing.volces.com"
region = "cn-beijing"
bucketName = "*** Provide your bucket name ***"
ctx = context.Background()
)
client, err := tos.NewClientV2(endpoint, tos.WithRegion(region), tos.WithCredentials(tos.NewStaticCredentials(accessKey, secretKey)))
checkErr(err)
rule := tos.ReplicationRule{
ID: "rule_id",
Status: enum.StatusEnabled,
PrefixSet: nil,
Destination: tos.Destination{
Bucket: "dst_bucket",
Location: "cn-shanghai",
StorageClassInheritDirective: enum.StorageClassIDSourceObject,
},
HistoricalObjectReplication: enum.StatusDisabled,
}
role := "your role"
output, err := client.PutBucketReplication(ctx, &tos.PutBucketReplicationInput{
Bucket: bucketName,
Role: role,
Rules: []tos.ReplicationRule{rule},
})
checkErr(err)
fmt.Println("PutBucketReplication Request ID:", output.RequestID)
}
View Cross-Region Replication Rules
warning
By default, you must be the bucket owner to access the cross-region replication rules of a bucket.
Sample Code
The following code is used to retrieve the cross-region replication rules of a bucket.
package main
import (
"context"
"fmt"
"github.com/volcengine/ve-tos-golang-sdk/v2/tos"
)
func checkErr(err error) {
if err != nil {
if serverErr, ok := err.(*tos.TosServerError); ok {
fmt.Println("Error:", serverErr.Error())
fmt.Println("Request ID:", serverErr.RequestID)
fmt.Println("Response Status Code:", serverErr.StatusCode)
fmt.Println("Response Header:", serverErr.Header)
fmt.Println("Response Err Code:", serverErr.Code)
fmt.Println("Response Err Msg:", serverErr.Message)
} else {
fmt.Println("Error:", err)
}
panic(err)
}
}
func main() {
var (
accessKey = os.Getenv("TOS_ACCESS_KEY")
secretKey = os.Getenv("TOS_SECRET_KEY")
endpoint = "https://tos-cn-beijing.volces.com"
region = "cn-beijing"
bucketName = "*** Provide your bucket name ***"
ctx = context.Background()
)
client, err := tos.NewClientV2(endpoint, tos.WithRegion(region), tos.WithCredentials(tos.NewStaticCredentials(accessKey, secretKey)))
checkErr(err)
input := &tos.GetBucketReplicationInput{
Bucket: bucketName,
RuleID: "ruleId",
}
output, err := client.GetBucketReplication(ctx, input)
checkErr(err)
fmt.Println("GetBucketReplication Request ID:", output.RequestID)
for _, rule := range output.Rules {
fmt.Println("rule id:", rule.ID)
fmt.Println("rule status:", rule.Status)
for _, prefix := range rule.PrefixSet {
fmt.Println("rule prefix:", prefix)
}
fmt.Println("rule dst bucket:", rule.Destination.Bucket)
fmt.Println("rule dst location:", rule.Destination.Location)
fmt.Println("rule dst storage class:", rule.Destination.StorageClass)
fmt.Println("rule dst storage class inherit directive:", rule.Destination.StorageClassInheritDirective)
}
}
Query Cross-Region Replication Progress
Precautions
warning
- To obtain the cross-region replication progress of a bucket, you must, by default, be the bucket owner.
- The progress of historical data replication is represented as a percentage and is only applicable to storage spaces where historical data replication has been enabled.
- The replication progress of newly added data is indicated by the timestamp of the new data.
Sample Code
The following code is used to retrieve the cross-region replication progress of a bucket.
package main
import (
"context"
"fmt"
"github.com/volcengine/ve-tos-golang-sdk/v2/tos"
)
func checkErr(err error) {
if err != nil {
if serverErr, ok := err.(*tos.TosServerError); ok {
fmt.Println("Error:", serverErr.Error())
fmt.Println("Request ID:", serverErr.RequestID)
fmt.Println("Response Status Code:", serverErr.StatusCode)
fmt.Println("Response Header:", serverErr.Header)
fmt.Println("Response Err Code:", serverErr.Code)
fmt.Println("Response Err Msg:", serverErr.Message)
} else {
fmt.Println("Error:", err)
}
panic(err)
}
}
func main() {
var (
accessKey = os.Getenv("TOS_ACCESS_KEY")
secretKey = os.Getenv("TOS_SECRET_KEY")
endpoint = "https://tos-cn-beijing.volces.com"
region = "cn-beijing"
bucketName = "*** Provide your bucket name ***"
ctx = context.Background()
)
client, err := tos.NewClientV2(endpoint, tos.WithRegion(region), tos.WithCredentials(tos.NewStaticCredentials(accessKey, secretKey)))
checkErr(err)
input := &tos.GetBucketReplicationInput{
Bucket: bucketName,
RuleID: "ruleId",
}
output, err := client.GetBucketReplication(ctx, input)
checkErr(err)
fmt.Println("GetBucketReplication Request ID:", output.RequestID)
for _, rule := range output.Rules {
fmt.Println("rule id:", rule.ID)
fmt.Println("rule historical object:", rule.Progress.HistoricalObject)
fmt.Println("rule new object:", rule.Progress.NewObject)
}
}
Delete Cross-Region Replication Rule
warning
By default, you must be the bucket owner to delete cross-region replication rules from a bucket.
Sample Code
The following code is used to delete cross-region replication rules for a bucket.
package main
import (
"context"
"fmt"
"github.com/volcengine/ve-tos-golang-sdk/v2/tos"
)
func checkErr(err error) {
if err != nil {
if serverErr, ok := err.(*tos.TosServerError); ok {
fmt.Println("Error:", serverErr.Error())
fmt.Println("Request ID:", serverErr.RequestID)
fmt.Println("Response Status Code:", serverErr.StatusCode)
fmt.Println("Response Header:", serverErr.Header)
fmt.Println("Response Err Code:", serverErr.Code)
fmt.Println("Response Err Msg:", serverErr.Message)
} else {
fmt.Println("Error:", err)
}
panic(err)
}
}
func main() {
var (
accessKey = os.Getenv("TOS_ACCESS_KEY")
secretKey = os.Getenv("TOS_SECRET_KEY")
endpoint = "https://tos-cn-beijing.volces.com"
region = "cn-beijing"
bucketName = "*** Provide your bucket name ***"
ctx = context.Background()
)
client, err := tos.NewClientV2(endpoint, tos.WithRegion(region), tos.WithCredentials(tos.NewStaticCredentials(accessKey, secretKey)))
checkErr(err)
input := &tos.DeleteBucketReplicationInput{
Bucket: bucketName,
}
output, err := client.DeleteBucketReplication(ctx, input)
checkErr(err)
fmt.Println("DeleteBucketReplication Request ID:", output.RequestID)
}
Relevant Documents
For more information on configuring cross-region replication rules, see Cross-Region Replication Rules.
Last updated: 2025.09.19 17:30:20
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