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Can't save file because of too many open files
Closed, ResolvedPublicBUG


System Information
Operating system: Fedora Linux 31
Graphics card: Nvidia GTX 760

Blender Version
Broken: 2.82
Worked: 2.81

Short description of error
After trying to get fluid sim working (and failing, no liquid is showing up) I can't save the file anymore. It says too many open files.

Exact steps for others to reproduce the error
Trying to bake a fluid sim and then save the file.

Event Timeline

Also blender crashes on exit now:
Blender quit
Segmentation fault (Speicherabzug geschrieben) This mentions Domain to be the type where you've set Flow. Can you add how you were trying to bake it ?

This mentions Domain to be the type where you've set Flow.

I don't understand this sentence. To me it reads like you mean I should have set the small circle to Domain, but that makes no sense. (English isn't my native language.)

Can you add how you were trying to bake it ?

I just where clicking the "Bake Data" button under Settings.

I don't see bake data when red box is "Flow". It comes up only when it is "Domain".

But it crashes two seconds after I click bake data. The folder it makes named "cache_fluid" has two folders "config" and "data". Both are empty.
I am not an expert in this process, so I might be wrong.

The circle defines the inflow. The cube around everything is the domain. The domain will become the actual fluid and has the bake button. What exactly is your question?

Campbell Barton (campbellbarton) changed the task status from Needs Triage to Needs Information from User.Feb 17 2020, 3:10 AM
Campbell Barton (campbellbarton) triaged this task as High priority.
Campbell Barton (campbellbarton) changed the subtype of this task from "Report" to "Bug".

From these steps I can redo an error,

  • Select the domain Scotch.Domain
  • In the panel Fluid -> Settings press Free Data
  • Press Bake Data button which replaced Free Data.
  • Two files are left open (using the process monitor in Linux).

While that's a bug which should be fixed, I'm surprised the limitation is hit so quickly, enough to cause a crash (I would have to run this over 500 times to hit the limit).

Can you confirm that you're doing the same steps listed above?

Yes, basically. But I also changed settings back and forth, trying to get fluid sim to work (I can't get it to show anything -> pretty sure that is a(nother) bug). But yes, I baked, freed, baked again, freed, baked, paused, continued, etc. Also tried to bake the mesh and particles at some point.

I'm having the same issue with 2,83a. At one point the sim jus t stop working. I trued to save and I get the same error message.