# 'kopia content stats' misreporting?

**URL:** <https://kopia.discourse.group/t/kopia-content-stats-misreporting/3410>\
**Category:** General Topics\
**Created:** [November 5, 2024, 11:38am UTC](https://kopia.discourse.group/t/kopia-content-stats-misreporting/3410 "2024-11-05T11:38:42Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![dcog989](https://yyz2.discourse-cdn.com/free1/user_avatar/kopia.discourse.group/dcog989/32/1245_2.png) [@dcog989](https://kopia.discourse.group/u/dcog989)\
**Post date:** [November 5, 2024, 11:38am UTC](https://kopia.discourse.group/t/kopia-content-stats-misreporting/3410/1 "2024-11-05T11:38:42Z")

</div>

I ran ‘snapshot migrate’ to apply compression to all snapshots in my repository (see [Recompressing objects in repository - #6 by Jakoma02](https://kopia.discourse.group/t/recompressing-objects-in-repository/1847/6)) as I originally created repository with several extensions excluded from compression.

The migrate process worked and reduced the repository size by ~30GB, but when I run ‘kopia content stats’ against the before and after repos, they both show the same compression / uncompressed:

**before:**

```auto
Count: 38263
Total Bytes: 123.5 GB
Total Packed: 119.8 GB (compression 3.0%)
By Method:
  (uncompressed) count: 25412 size: 96.9 GB
  zstd count: 9682 size: 25.8 GB packed: 22.2 GB compression: 14.1%
  zstd-fastest count: 3169 size: 772.7 MB packed: 740.2 MB compression: 4.2%
Average: 3.2 MB

```

**after:**

```auto
Count: 38280
Total Bytes: 123.5 GB
Total Packed: 119.8 GB (compression 3.0%)
By Method:
  (uncompressed) count: 25416 size: 96.9 GB
  zstd count: 9975 size: 26.6 GB packed: 22.9 GB compression: 13.8%
  zstd-fastest count: 2889 size: 5.4 MB packed: 2.2 MB compression: 58.7%
Average: 3.2 MB

```

Bug or user stupidity?

---

<div class="post-metadata">

**Author:** ![dcog989](https://yyz2.discourse-cdn.com/free1/user_avatar/kopia.discourse.group/dcog989/32/1245_2.png) [@dcog989](https://kopia.discourse.group/u/dcog989)\
**Post date:** [November 5, 2024, 1:11pm UTC](https://kopia.discourse.group/t/kopia-content-stats-misreporting/3410/2 "2024-11-05T13:11:39Z")

</div>

> “if Kopia notices that a data chunk grows size after compression, it will simply use the original data (which explains why you might still see significant “(uncompressed)” in the kopia content stats output” - [Compression | Kopia](https://kopia.io/docs/advanced/compression/)

That solves the puzzle for me why so much data was uncompressed, but not why the two repo stats are reported as being ~identical but Windows Explorer shows a 30GB difference.