P1-[4.0 bug hunting]-[Dashboard + TiFlash]-Disk info collector in TiFlash is incorrect

[sre-bot]

Bug Hunter issue tidb-challenge-program/bug-hunting-issue#103

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Bug Report

Please answer these questions before submitting your issue. Thanks!

1. What did you do?

• deploy a cluster on Azure with tiup cluster
• visit dashboard -- cluster diagnose
• start a diagnose job
• view full report
• check Cluster Hardware database table

2. What did you expect to see?

• The DISK(GB) column of TiFlash in the report should be the same with PD's since this two VMs have the same configration
• TiFlash disk info in Cluster Hardware database table should be also the same with PD's

3. What did you see instead?

• in the report, TiFlash disk column is empty

  

• in the Cluster Hardware database table, TiFlash has a row count 1 when total filter is applied, but PD has 3.

  

4. What version of TiDB are you using? (tidb-server -V or run select tidb_version(); on TiDB)

v4.0.0-rc.2

Additional notes

A deploy on Tencent Cloud has the same problem.

[breezewish]

I think this issue should be opened in TiDB Dashboard repo instead.

[fzhedu]

redirect to https://github.com/pingcap-incubator/tidb-dashboard, closed it here.