使用 v4.0.3 BR 备份到本地，目录为空

[buptzhoutian (陆贰)]

• 【TiDB 版本】：v4.0.3
• 【问题描述】：使用 v4.0.3 BR 备份到本地，目录为空
• 【问题复现步骤】：

创建测试 database 和 table ，插入几条数据：

> create database d_test_br;
> use d_test_br;
> create table t_test_br(c1 varchar(20) charset utf8mb4 collate utf8mb4_general_ci primary key);
> insert into t_test_br values ('ABC');
> insert into t_test_br values ('abc');
> insert into t_test_br values (' AbC ');

使用 v4.0.3 BR backup

$ components/br/v4.0.3/br backup db \
    --db d_test_br \
    --pd 10.246.194.119:2379 \
    --pd 10.246.194.219:2379 \
    --pd 10.246.194.58:2379 \
    --storage "local:///tmp/tidb-test-br"

登录到 tikv 节点查看目录

/tmp/tidb-test-br/localtmp/ 目录没有内容

tikv 日志

[2020/07/29 15:38:18.623 +08:00] [INFO] [local.rs:42] ["create local storage"] [base=/tmp/tidb-test-br]
[2020/07/29 15:38:18.623 +08:00] [INFO] [local.rs:42] ["create local storage"] [base=/tmp/tidb-test-br]
[2020/07/29 15:38:18.623 +08:00] [INFO] [endpoint.rs:740] ["run backup task"] [task="BackupTask { start_ts: TimeStamp(0), end_ts: TimeStamp(418383999417188384), start_key: \"7480000000000000945F69800000000000000100\", end_key: \"7480000000000000945F698000000000000001FB\", is_raw_kv: false, cf: \"default\" }"]
[2020/07/29 15:38:18.623 +08:00] [INFO] [endpoint.rs:740] ["run backup task"] [task="BackupTask { start_ts: TimeStamp(0), end_ts: TimeStamp(418383999417188384), start_key: \"7480000000000000945F720000000000000000\", end_key: \"7480000000000000945F72FFFFFFFFFFFFFFFF00\", is_raw_kv: false, cf: \"default\" }"]
[2020/07/29 15:38:18.624 +08:00] [INFO] [service.rs:79] ["backup send half closed"]
[2020/07/29 15:38:18.624 +08:00] [INFO] [service.rs:79] ["backup send half closed"]

BR 日志

[2020/07/29 15:38:18.636 +08:00] [INFO] [collector.go:61] ["Database backup Success summary: total backup ranges: 2, total success: 2, total failed: 0, total take(s): 0.01, total kv: 12, total size(Byte): 412, avg speed(Byte/s): 61531.38"] ["backup checksum"=4.06305ms] ["backup fast checksum"=235.892µs] ["backup total regions"=2] [BackupTS=418383999417188384] [Size=4841]

[来了老弟]

br 是根据 region leader 进行备份的，可以检查下 d_test_br 下 table 的 region leader 是否平均分布在所有 tikv 节点上，如果不是，可以到 region leader 所在位置的 backup dir 下进行查看

[buptzhoutian (陆贰)]

哦，是我2了，我看的是 tidb-test-br/localtmp 目录，其实 sst 文件在 tidb-test-br 这一级

[来了老弟]

，欢迎继续测试~