The kopia server was not uploading any logs to the repository,
because "repodiag" blob uploads would always fail.
The cause was the following: when the (log) repodiag blob
PUT operation was initiated, the `Context` used for this
operation was already canceled.
The context used for blob uploads is passed to
`repodiag.NewLogManager` when opening the repository.
In the case of the kopia server, the repository is asynchronously
opened in `server.Server.InitReposotoryAsync`. The context
passed to `repo.Open` is canceled after the "open repository"
server task completes.
This issue was introduced in #1691
Change:
Use `context.WithoutCancel()` instead of the context passed
when the repo diagnoser is created.
New tests are included to reproduce this failure and verify
the fix.
- test: ensure server logs are uploaded to the repo
- test: honor cancellation in map storage
- test: repodiag context cancellation
Ref:
- #1691
2a22281271