br: ebs backup progress uses # of stores, not # of volumes, to track progress

[michaelmdeng]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

Conduct EBS snapshot backup using tikv store w/ multiple volumes. View backup logs, which show progress based on # of tikvs, not # of volumes.

For large backups w/ many tikvs/volumes, progress quickly gets to 100% because volume progress is multiples of the tikv progress, but this is not an accurate representation of the actual progress of the backup/snapshots.

2. What did you expect to see? (Required)

Progress based on # of volumes.

3. What did you see instead (Required)

Progress based on # of tikvs, ex. logs from backup w/ single tikv, but 3 volumes

I0710 14:37:26.544144       9 backup.go:302] [2024/07/10 14:37:26.544 +00:00] [INFO] [progress.go:160] [progress] [step=backup] [progress=100.00%] [count="100 / 100"] [speed="? p/s"] [elapsed=1m38s] [remaining=1m38s]

4. What is your TiDB version? (Required)

tidb> select tidb_version();
+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| tidb_version()                                                                                                                                                                                                                                                                                            |
+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Release Version: v6.5.4-v15.2-abnb
Edition: Community
Git Commit Hash: 26e36fba0c2e890e7a3d565113cb25091c890543
Git Branch: heads/v6.5.4-v15.2-abnb
UTC Build Time: 2024-05-08 21:58:30
GoVersion: go1.21.10
Race Enabled: false
TiKV Min Version: 6.2.0-alpha
Check Table Before Drop: false
Store: tikv |
+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.09 sec)