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Array files on Cache Drive don't survive a reboot?

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  • Community Expert

I have SABnzbd downloading files to:

 

\mnt\user\data\usenet\complete\tv

 

And Sonarr moves the files to:

 

\mnt\user\data\media\tv

 

This move happens basically instantly, because the share is Data and everything is happening on my Cache Drive and they'll remain there until Mover runs.  But if I reboot the server before running Mover, the array files on the Cache Drive will disappear.  Everything else on the Cache Drive will be intact, just not the individual media files moved by Sonarr, Radarr etc.

 

Also, I've observed that while the media files aren't visible in the file system, the space reported used on the Cache Drive will be inclusive of those media files.

 

I've been running Unraid for over a decade, but never experienced this behavior until recently, after a power outage last week, when my UPS kept the server online until initiating a graceful shutdown, and again yesterday, when I rebooted to perform the upgrade to 7.1.0.  In both instances, later on that day, I noticed that files that had downloaded since the last time Mover ran were now missing.

Edited by adammerkley

Solved by adammerkley

  • adammerkley changed the title to Array files on Cache Drive don't survive a reboot?
  • Community Expert
1 hour ago, adammerkley said:

the array files on the Cache Drive

A better way to say this might be something like "the user share files on cache". The array isn't cache and cache isn't the array.

 

 

Attach Diagnostics ZIP to your NEXT post in this thread.

  • Author
  • Community Expert
1 hour ago, trurl said:

A better way to say this might be something like "the user share files on cache". The array isn't cache and cache isn't the array.

 

 

Attach Diagnostics ZIP to your NEXT post in this thread.

 

Thanks so much much for the reply.  tower-diagnostics-20250506-1954.zip

  • Community Expert

Uninstall Mover Tuning plugin. Leave it uninstalled until you can confirm whether or not you still have this same problem.

 

If it works correctly without Mover Tuning, and you still think you want to use that plugin for some reason, post on its support thread.

  • Author
  • Community Expert
8 hours ago, trurl said:

Uninstall Mover Tuning plugin. Leave it uninstalled until you can confirm whether or not you still have this same problem.

 

If it works correctly without Mover Tuning, and you still think you want to use that plugin for some reason, post on its support thread.

 

Oh good call.  I'll give it a shot.

  • 1 month later...
  • Author
  • Community Expert
  • Solution

In the reboot to install 7.1.3 I experienced the issue again, so I looked into it further and I believe it had to do with ZFS dataset vs a directory on ZFS. I ran mover to clear everything out of the Data share on my cache, then stopped all dockers and deleted the Data share from cache entirely. Then I rebooted again, and the Data share reappeared, with old files in it that had been moved weeks ago. After verifying that those files had in fact been moved to the array, I deleted the Data share from cache again, rebooted, and this time there was no Data share upon reboot. I then wrote a file to /mnt/user/data and confirmed that it was created on the cache drive.

It's been several days, and I've run mover and rebooted a few more times to test, and everything is working as expected. Oh, and I have SABnzbd writing to /mnt/user/data instead of /mnt/cache/data.

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