用export AWS_ACCESS_KEY_ID=xx
export AWS_SECRET_ACCESS_KEY=xx 。 进度为0%时
br日志情况：
cat testtidb001_back20250708-bakck3.log |grep error -i
[2025/07/08 20:16:38.228 +08:00] [INFO] [manager.go:292] [“failed to campaign”] [“owner info”=“[log-backup] /tidb/br-stream/owner ownerManager 28e0ed8d-dc32-4ba3-aa6c-9d846b0f24b8”] [error=“lost watcher waiting for delete”]
[2025/07/08 20:16:38.228 +08:00] [ERROR] [advancer.go:399] [“listen task meet error, would reopen.”] [error=EOF] [stack=“github.com/pingcap/tidb/br/pkg/streamhelper.(*CheckpointAdvancer).StartTaskListener.func1\n\t/workspace/source/tidb/br/pkg/streamhelper/advancer.go:399”]
[2025/07/08 20:16:38.228 +08:00] [INFO] [advancer.go:402] [“Task watcher exits due to some error.”] [category=“log backup advancer”] [error=EOF]
[2025/07/08 20:16:38.230 +08:00] [INFO] [manager.go:292] [“failed to campaign”] [“owner info”=“[log-backup] /tidb/br-stream/owner ownerManager 28e0ed8d-dc32-4ba3-aa6c-9d846b0f24b8”] [error=“context canceled”]
[2025/07/08 20:16:38.246 +08:00] [WARN] [s3.go:521] [“failed to check object lock for bucket”] [bucket=dba-test] [error=“ObjectLockConfigurationNotFoundError: \n\tstatus code: 404, request id: tx00000000000000004f6f6-00686d0c26-20bf4-default, host id: “]
[2025/07/08 20:16:39.483 +08:00] [INFO] [manager.go:317] [“revoke session”] [“owner info”=”[log-backup] /tidb/br-stream/owner ownerManager 28e0ed8d-dc32-4ba3-aa6c-9d846b0f24b8”] [error=“rpc error: code = Canceled desc = grpc: the client connection is closing”]