File corruption due to Electric shutdown #96296

New Issue

Rajendra Meena · 2022-03-10T14:24:49+01:00

Rajendra Meena commented

2022-03-10 14:24:49 +01:00

System Information
Operating system: Windows-10-10.0.17763-SP0 64 Bits
Graphics card: AMD Radeon(TM) Graphics ATI Technologies Inc. 4.5.14761 Core Profile Context 21.10.2 30.0.13025.5005

Blender Version
Broken: version: 3.0.1, branch: master, commit date: 2022-01-25 17:19, hash: dc2d180181
Worked: (newest version of Blender that worked as expected)

Short description of error
[Blend file get corrupted after electric shut down]

Exact steps for others to reproduce the error
[1. I saved my blender file succesfully after doing some work.
2. Next day, i reopen the file and start doing some work but dut to sudden power cut my pc turned off.
3. Now when i try to reopen the same file, it shows the error "missing block" (as shown in attached image)
4. I agree that my unsaved work will lost but the whole file get corrupted and i lost it completely.
5. even this resets the enabled addon and preference.
6. other software use diffetent file($file) for recent work and seperate file for saved work in. Now,when the user save again then the old saved file get replaced by the new file and another file ($file) created to hold the recent unsaved work. ]

B try.blend
[Based on the default startup or an attached .blend file (as simple as possible)]

**System Information** Operating system: Windows-10-10.0.17763-SP0 64 Bits Graphics card: AMD Radeon(TM) Graphics ATI Technologies Inc. 4.5.14761 Core Profile Context 21.10.2 30.0.13025.5005 **Blender Version** Broken: version: 3.0.1, branch: master, commit date: 2022-01-25 17:19, hash: `dc2d180181` Worked: (newest version of Blender that worked as expected) **Short description of error** [Blend file get corrupted after electric shut down] **Exact steps for others to reproduce the error** [1. I saved my blender file succesfully after doing some work. 2. Next day, i reopen the file and start doing some work but dut to sudden power cut my pc turned off. 3. Now when i try to reopen the same file, it shows the error "missing block" (as shown in attached image) 4. I agree that my unsaved work will lost but the whole file get corrupted and i lost it completely. 5. even this resets the enabled addon and preference. 6. other software use diffetent file($file) for recent work and seperate file for saved work in. Now,when the user save again then the old saved file get replaced by the new file and another file ($file) created to hold the recent unsaved work. ] ![Screenshot (22).png](https://archive.blender.org/developer/F12919740/Screenshot__22_.png) [B try.blend](https://archive.blender.org/developer/F12919742/B_try.blend) [Based on the default startup or an attached .blend file (as simple as possible)]

Rajendra Meena commented

2022-03-10 14:24:49 +01:00

Added subscriber: @rajq123

Sergey Sharybin commented

2022-03-10 16:02:32 +01:00

Added subscriber: @Sergey

Sergey Sharybin commented

2022-03-10 16:02:32 +01:00

Blender does write file to a temporary file next to the original file, and then removes the old file, renames the new file. This is how situations of running out of disk space during save are ensured to be less problematic. However, Blender if the power outage happens before OS flushed modifications to disk the content might be corrupted.

Once the file is corrupted, don't think it will be possible to recover it.
One thing you can try is to open one of the backup files (the ones with .blend1, .blend2 and so on extension).

Blender does write file to a temporary file next to the original file, and then removes the old file, renames the new file. This is how situations of running out of disk space during save are ensured to be less problematic. However, Blender if the power outage happens before OS flushed modifications to disk the content might be corrupted. Once the file is corrupted, don't think it will be possible to recover it. One thing you can try is to open one of the backup files (the ones with .blend1, .blend2 and so on extension).

Ryan Inch commented

2022-03-11 06:02:17 +01:00

Added subscriber: @Imaginer

Germano Cavalcante commented

2022-03-11 15:44:17 +01:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2022-03-11 15:44:17 +01:00

Changed status from 'Needs Triage' to: 'Archived'

Germano Cavalcante closed this issue

2022-03-11 15:44:17 +01:00

Germano Cavalcante commented

2022-03-11 15:44:17 +01:00

The temporary file generated with AutoSave is Blender's way of avoiding losing all your work due to these adverse conditions.
Perhaps this AutoSave feature can be improved for cases like "Electric shutdown".
But the corruption in this case is not really due to a bug in Blender.

So thanks for the report, but this doesn't seem like something we'll be trying to resolve. At least for now.

The temporary file generated with AutoSave is Blender's way of avoiding losing all your work due to these adverse conditions. Perhaps this AutoSave feature can be improved for cases like "Electric shutdown". But the corruption in this case is not really due to a bug in Blender. So thanks for the report, but this doesn't seem like something we'll be trying to resolve. At least for now.

Sign in to join this conversation.

No Label

Download

What's New

Blender Studio

Manual

Developers Blog

Documentation

Benchmark

Blender Conference

Development Fund

One-time Donations

File corruption due to Electric shutdown #96296