Eugene Sumin 2b92388286 refactor(general): Increase restore progress granularity (#3655) ...

When restoring huge file(s), the progress reporting is done in a bit
weird way:

```
kopia_test % kopia snapshot restore ka2084d263182164b6cf3456668e6b6da /Users/eugen.sumin/kopia_test/2
Restoring to local filesystem (/Users/eugen.sumin/kopia_test/2) with parallelism=8...
Processed 6 (5.4 GB) of 5 (5.4 GB) 1.6 MB/s (100.0%) remaining 0s.
Processed 6 (5.4 GB) of 5 (5.4 GB) 1.6 MB/s (100.0%) remaining 0s.
Processed 6 (5.4 GB) of 5 (5.4 GB) 1.6 MB/s (100.0%) remaining 0s.
Processed 6 (5.4 GB) of 5 (5.4 GB) 1.5 MB/s (100.0%) remaining 0s.
Processed 6 (5.4 GB) of 5 (5.4 GB) 1.5 MB/s (100.0%) remaining 0s.
Processed 6 (5.4 GB) of 5 (5.4 GB) 1.5 MB/s (100.0%) remaining 0s.
Restored 5 files, 1 directories and 0 symbolic links (5.4 GB).
```
In fact, the amount of restored data is dumped when particular file
completely restored.

This PR contains the least invasive change, which allows us to see
progress update while file is downloaded from object storage.
```
Restoring to local filesystem (/Users/eugen.sumin/kopia_test/55) with parallelism=8...
Processed 2 (3.1 MB) of 5 (1.8 GB).
Processed 4 (459.6 MB) of 5 (1.8 GB) 270.3 MB/s (25.2%) remaining 4s.
Processed 4 (468.7 MB) of 5 (1.8 GB) 269 MB/s (25.7%) remaining 4s.
Processed 4 (741.6 MB) of 5 (1.8 GB) 269 MB/s (40.6%) remaining 3s.
Processed 4 (1.1 GB) of 5 (1.8 GB) 280 MB/s (57.6%) remaining 2s.
Processed 5 (1.4 GB) of 5 (1.8 GB) 291.1 MB/s (75.2%) remaining 1s.
Processed 5 (1.4 GB) of 5 (1.8 GB) 289.8 MB/s (75.6%) remaining 1s.
Processed 5 (1.6 GB) of 5 (1.8 GB) 270.2 MB/s (85.3%) remaining 0s.
Processed 5 (1.7 GB) of 5 (1.8 GB) 256.3 MB/s (95.0%) remaining 0s.
Processed 6 (1.8 GB) of 5 (1.8 GB) 251 MB/s (100.0%) remaining 0s.
Processed 6 (1.8 GB) of 5 (1.8 GB) 251 MB/s (100.0%) remaining 0s.
Restored 5 files, 1 directories and 0 symbolic links (1.8 GB).
```

---------

Co-authored-by: Shikhar Mall <mall.shikhar.in@gmail.com>

2024-05-10 09:47:13 -07:00

8.8 KiB

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