Destroy Command Does Not Clean TiFlash Data Directories

[birdstorm]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. What did you do?

Use tiup cluster destroy command to destroy a cluster with TiFlash

tiflash_servers:
  - host: 172.16.5.81
    tcp_port: 5020
    http_port: 5030
    flash_service_port: 7333
    flash_proxy_port: 13170
    flash_proxy_status_port: 13292
    metrics_port: 12234
    data_dir: "/home/tidb/birdstorm/data1,/home/tidb/birdstorm/data3"
    config:
      capacity: "10737418240,10737418240"
      logger:
        level: info

2. What did you expect to see?
   TiFlash data directories should be deleted

3. What did you see instead?

+ [ Serial ] - DestroyCluster
Destroying component tiflash
Destroying instance 172.16.5.81
Deleting paths on 172.16.5.81: /home/tidb/birdstorm/deploy/tiflash-5020/log /home/tidb/birdstorm/deploy/tiflash-5020 /etc/systemd/system/tiflash-5020.service
Destroy 172.16.5.81 success
- Destroy tiflash paths: [/home/tidb/birdstorm/deploy/tiflash-5020/log /home/tidb/birdstorm/deploy/tiflash-5020 /etc/systemd/system/tiflash-5020.service]

4. What version of TiUP are you using (tiup --version)?
   v1.2.1

[lucklove]

Thanks for your issue

[lucklove]

It seems not reproduce with a single data dir

[lucklove]

Ok, when there is multiple data directories, it not works