Fix: Enable throttling parameters in BackupRepository repositoryConfig

[kvaps]

The throttling parameters specified in BackupRepository's repositoryConfig were being silently filtered out and not applied to Kopia repositories. This occurred because these parameters were missing from the whitelist in getStorageVariables().

Code:

• Added throttling options to the valid parameters whitelist in pkg/repository/provider/unified_repo.go:

  • ThrottleUploadBytes - upload bandwidth throttling (bytes/sec)
  • ThrottleDownloadBytes - download bandwidth throttling (bytes/sec)
  • ThrottleReadOPS - read operations throttling (ops/sec)
  • ThrottleWriteOPS - write operations throttling (ops/sec)
  • ThrottleListOPS - list operations throttling (ops/sec)

• Updated parameter names in pkg/repository/udmrepo/repo_options.go to use "Throttle" prefix for better clarity:

  • readOPS → ThrottleReadOPS
  • writeOPS → ThrottleWriteOPS
  • listOPS → ThrottleListOPS
  • uploadBytes → ThrottleUploadBytes
  • downloadBytes → ThrottleDownloadBytes

Documentation:

• Updated site/content/docs/main/backup-repository-configuration.md with throttling parameters descriptions and examples using the new parameter names

Tests:

• Added test case in pkg/repository/provider/unified_repo_test.go to verify throttling parameters are properly passed through
• Updated test expectations to use the new parameter names

Example Usage:

apiVersion: velero.io/v1
kind: BackupRepository
spec:
  repositoryConfig:
    ThrottleUploadBytes: "838860800"    # ~800 MB/s
    ThrottleDownloadBytes: "838860800"  # ~800 MB/s
    ThrottleReadOPS: "100"
    ThrottleWriteOPS: "100"
    ThrottleListOPS: "50"

These parameters are now properly applied to Kopia during file system backups performed by node-agent.

Signed-off-by: Andrei Kvapil kvapss@gmail.com

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 60.24%. Comparing base (99f12b8) to head (5e643a4).
⚠️ Report is 171 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #9351      +/-   ##
==========================================
+ Coverage   59.67%   60.24%   +0.57%     
==========================================
  Files         383      386       +3     
  Lines       44050    35942    -8108     
==========================================
- Hits        26286    21653    -4633     
+ Misses      16218    12715    -3503     
- Partials     1546     1574      +28     

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[Lyndon-Li]

Sorry for misleading of my previous comment. We add throttle for each of the options, but as the convention, we need to make the first word lowercase, like:

    ThrottleOptionReadOps       = "throttleReadOPS"
	ThrottleOptionWriteOps      = "throttleWriteOPS"
	ThrottleOptionListOps       = "throttleListOPS"
	ThrottleOptionUploadBytes   = "throttleUploadBytes"
	ThrottleOptionDownloadBytes = "throttleDownloadBytes"