Blender deleted my entire projects folder #112381

New Issue

rlen · 2023-09-14T15:03:44+02:00

rlen commented

2023-09-14 15:03:44 +02:00

System Information
Operating system: Windows 11
Graphics card: Nvidia GTX 1080 TI

Blender Version
Broken: 3.6.2, e53e55951e, blender-v3.6-release, 2023-08-16
Worked: 3.5.1, e1ccd9d4a1, blender-v3.5-release, 2023-04-24

While working with a scene, I baked my simulation nodes. About a day and a few saves, I wanted to modify the nodes for a different look. I clicked the trash can next to "Bake" (in the physics tab, under "Simulation Nodes"), the program halted for a bit, then crashed. When I went to load the file back up, I discovered that not only the file was vaporized, but it's parent directory along with it, causing me to lose months of work.

Exact steps for others to reproduce the error
Based on the default startup or an attached .blend file (as simple as possible).

Since the evidence was destroyed, I cannot give complete details.

First, create a project in Blender 3.5.1. Create a scene with some meshes, shaders, add some textures, yadda yadda. Make sure the scene is about 4 minutes and 38 seconds long. Then, discover Simulation Nodes and install Blender 3.6.2. Open the original scene in the new Blender version. Do some stuff with SimNodes on a couple meshes. Bake them. Do some more tinkering with the nodes and then decide you want to re-bake to make your changes. Click the trash can next to "Bake" in the Physics tab for one of the meshes. Watch as all of your work is decimated by one programming error.

**System Information** Operating system: Windows 11 Graphics card: Nvidia GTX 1080 TI **Blender Version** Broken: 3.6.2, e53e55951e7a, blender-v3.6-release, 2023-08-16 Worked: 3.5.1, e1ccd9d4a1d3, blender-v3.5-release, 2023-04-24 While working with a scene, I baked my simulation nodes. About a day and a few saves, I wanted to modify the nodes for a different look. I clicked the trash can next to "Bake" (in the physics tab, under "Simulation Nodes"), the program halted for a bit, then crashed. When I went to load the file back up, I discovered that not only the file was vaporized, but it's parent directory along with it, causing me to lose months of work. **Exact steps for others to reproduce the error** Based on the default startup or an attached .blend file (as simple as possible). Since the evidence was destroyed, I cannot give complete details. First, create a project in Blender 3.5.1. Create a scene with some meshes, shaders, add some textures, yadda yadda. Make sure the scene is about 4 minutes and 38 seconds long. Then, discover Simulation Nodes and install Blender 3.6.2. Open the original scene in the new Blender version. Do some stuff with SimNodes on a couple meshes. Bake them. Do some more tinkering with the nodes and then decide you want to re-bake to make your changes. Click the trash can next to "Bake" in the Physics tab for one of the meshes. Watch as all of your work is decimated by one programming error.

rlen added the

labels 2023-09-14 15:03:45 +02:00

Germano Cavalcante commented

2023-09-14 19:40:14 +02:00

Thanks for the report, @rlen. Losing months of work can be incredibly frustrating.

From what I could observe of the "Delete Cached Simulation" operator, it only deletes the directories related to the specified in the modifier.

I tested one of the examples at https://www.blender.org/download/demo-files/#simulation. And the deleted directories were:
C:\Users\Germano Cavalcante\Downloads\blendcache_recording_01\sim_Cube_GeometryNodes\920782997\meta
C:\Users\Germano Cavalcante\Downloads\blendcache_recording_01\sim_Cube_GeometryNodes\920782997\blobs
C:\Users\Germano Cavalcante\Downloads\blendcache_recording_01\sim_Cube_GeometryNodes\920782997
C:\Users\Germano Cavalcante\Downloads\blendcache_recording_01\sim_Cube_GeometryNodes

Note that for sim_Cube_GeometryNodes, it still checks if the directory is empty first.

(Strange that even though BLI_delete was called, I still see those files here).

Could it be that this function is unsafe in some way?

I feel like we need information from the developers...

The code for the "Delete Cached Simulation" operator was added in 0de54b84c6 by @JacquesLucke

Thanks for the report, @rlen. Losing months of work can be incredibly frustrating. From what I could observe of the "Delete Cached Simulation" operator, it only deletes the directories related to the specified in the modifier. I tested one of the examples at https://www.blender.org/download/demo-files/#simulation. And the deleted directories were: `C:\Users\Germano Cavalcante\Downloads\blendcache_recording_01\sim_Cube_GeometryNodes\920782997\meta` `C:\Users\Germano Cavalcante\Downloads\blendcache_recording_01\sim_Cube_GeometryNodes\920782997\blobs` `C:\Users\Germano Cavalcante\Downloads\blendcache_recording_01\sim_Cube_GeometryNodes\920782997` `C:\Users\Germano Cavalcante\Downloads\blendcache_recording_01\sim_Cube_GeometryNodes` Note that for `sim_Cube_GeometryNodes`, it still checks if the directory is empty first. (Strange that even though `BLI_delete` was called, I still see those files here). Could it be that this function is unsafe in some way? I feel like we need information from the developers... The code for the "Delete Cached Simulation" operator was added in 0de54b84c6 by @JacquesLucke

❤️ 1

Germano Cavalcante added

Module

Nodes & Physics

Status

Needs Info from Developers

and removed

Status

Needs Triage

labels 2023-09-14 19:40:42 +02:00

Jacques Lucke commented

2023-09-14 21:42:06 +02:00

I think what is reported here was fixed in 101abc6f6c. I thought it was backported already, but looks like it wasn't... I added the commit to #109399.

Afaik, the issue can only happen when you set a custom bake directory and make it the root folder of your project instead of sum subfolder.

I'm sorry for the loss of your work...

I think what is reported here was fixed in 101abc6f6cfc49eb239e2536d25f32eb1ceab492. I thought it was backported already, but looks like it wasn't... I added the commit to #109399. Afaik, the issue can only happen when you set a custom bake directory and make it the root folder of your project instead of sum subfolder. I'm sorry for the loss of your work...

❤️ 1

Germano Cavalcante commented

2023-09-14 21:49:59 +02:00

Thanks for the info. In fact it seems to be related to the problem described here.
Maybe it would be a good idea to have greater transparency on what is to be deleted.
But that would be an improvement and not a bug fix.
Closing then.

Thanks for the info. In fact it seems to be related to the problem described here. Maybe it would be a good idea to have greater transparency on what is to be deleted. But that would be an improvement and not a bug fix. Closing then.

👍 1

Germano Cavalcante closed this issue

2023-09-14 21:50:02 +02:00

Blender Bot added

Status

Archived

and removed

Status

Needs Info from Developers

labels 2023-09-14 21:50:03 +02:00

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