February 3Feb 3 datavault972-diagnostics-20260203-2122.zipHi Everyone,I m getting the Docker Failed to Start error. I have rebooted my server several times to no success.Thanks in Advance!
February 3Feb 3 Community Expert Why have you set your docker.img to 75GB? Have you had problems filling it? The usual cause of filling docker.img is an application writing to a path that isn't mapped.Your system share has files on the array. And some other things to discuss about your shares.You should remove this plugin:NerdTools.plg - 2024.02.17 (Up to date) (Incompatible)And install Fix Common Problems.
February 3Feb 3 Author I looked up a fix for this problem and someone suggested that I increase the size of the docker.img.I just tried Fix Common Problems and I'll go through the list
February 3Feb 3 Community Expert 6 minutes ago, Tuntira said:someone suggested that I increase the size of the docker.imgHow many containers do you normally have?
February 3Feb 3 Community Expert Looks like you had it set to 50G earlier, and you were only using 13G of that.Set it to 30G, thenDocker troubleshooting | Unraid DocsThis page offers troubleshooting guidance specifically for Docker containers on Unraid, managed by the Unraid team. For advanced troubleshooting, in-depth technical details, or topics beyond the Unrai
February 3Feb 3 Author New Diags.I had 9 containers I think. datavault972-diagnostics-20260204-0007.zip
February 3Feb 3 Community Expert Feb 3 21:53:22 DataVault972 root: Fix Common Problems: Error: Same share (media) exists in a different case Feb 3 21:53:22 DataVault972 root: Fix Common Problems: Error: Same share (Media) exists in a different case Feb 3 21:53:27 DataVault972 webgui: File_put_contents_atomic failed to write / rename /mnt/cache/669831853.tmp Feb 3 21:53:27 DataVault972 root: Fix Common Problems: Error: Unable to write to cache Feb 3 21:53:28 DataVault972 root: Fix Common Problems: Warning: NerdTools.plg Not Compatible with Unraid version 7.1.4 Feb 3 21:53:30 DataVault972 root: Fix Common Problems: Other Warning: fix.common.problems Support Updated Feb 3 21:53:30 DataVault972 root: Fix Common Problems: Other Warning: Background notifications not enabledFeb 3 21:54:26 DataVault972 plugin-manager: NerdTools.plg removed Reboot just to make sure nothing of this is still hanging around.The most serious problem there is unwritable cache. Run a scrub on it.Then post new diagnostics
February 4Feb 4 Author So I reboot the system after the scrub, no luck! Attached are the diags after reboot datavault972-diagnostics-20260204-0634.zip
February 4Feb 4 Community Expert Same FCP results:Feb 4 06:34:45 DataVault972 root: Fix Common Problems: Error: Same share (media) exists in a different case Feb 4 06:34:45 DataVault972 root: Fix Common Problems: Error: Same share (Media) exists in a different case Feb 4 06:34:48 DataVault972 webgui: File_put_contents_atomic failed to write / rename /mnt/cache/661999876.tmp Feb 4 06:34:48 DataVault972 root: Fix Common Problems: Error: Unable to write to cache Feb 4 06:34:51 DataVault972 root: Fix Common Problems: Other Warning: Background notifications not enabledDisable Docker and VM Manager and leave them disabled until everything else is resolved.See if you can copy cache to the array. Mover won't work since cache can't be written to remove files from it so you will have to copy instead of move.After everything is copied, you can reformat cache and we can go from there.
April 12Apr 12 Author HI All,First of all, I have NO idea why I did not respond to this above posts, my apologies for that!Second of all, the beast has reared is head again!We recently had a power outage at home and my backup was faulty so I am thinking that this was caused by an unclean shut down!As above, I ran a scrub and no errors came out.My machine is currently undergoing a parity check btw.Attached are diags datavault972-diagnostics-20260412-1151.zip
April 12Apr 12 Community Expert Solution Try recreating the Docker image:https://docs.unraid.net/unraid-os/troubleshooting/common-issues/docker-troubleshooting/#re-creating-the-docker-image-fileThen:https://docs.unraid.net/unraid-os/troubleshooting/common-issues/docker-troubleshooting/#reinstalling-docker-applicationsAlso see below if you have any custom docker networks:https://docs.unraid.net/unraid-os/troubleshooting/common-issues/docker-troubleshooting/#restoring-docker-custom-networksP.S. The HBA is overheating.
April 12Apr 12 Author Thanks, this solved my problem, however, I cannot get my plex server to start up.It just gives me the following:
April 12Apr 12 Author I think that my problem isthat my Cache is getting too full:Not long after, the Docker problem came back. How can I clear the cache?
April 12Apr 12 Community Expert 28 minutes ago, Tuntira said:I think that my problem isthat my Cache is getting too full:You should make sure you set a value for the Minimum Free Space on the cache pool to avoid it getting too full.
April 16Apr 16 Author On 4/12/2026 at 8:42 PM, trurl said:Post new diagnosticsHi All, my apologies for going silent, I was experiencing multiple power outages at my home and my backup power system was not working problem so I decided to shut off my server to prevent issues from happening. The problems that I am facing now started when I had an unclean shutdown.Here are the diags that i got just now datavault972-diagnostics-20260416-2144.zip
April 16Apr 16 Community Expert 55 minutes ago, Tuntira said:The problems that I am facing now started when I had an unclean shutdown.Unclean shutdown not a likely cause of problems.Can you tell us exactly what problems you are facing now?
April 17Apr 17 Author Plex was the main issue, it was just refusing to load, so what I did was the above DOCKER reset and then BEFORE I reinstalled PLex I deleted the folders in appdata and not it is fine.I will continue to monitor. Thank you so much for the assistance!
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