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Fix Common Problems: Error: Unable to write to cache

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I have been using Unraid for over two years without any major issues until last night.  I mainly use Unraid with docker to run SABnzb, CouchPotato and SickRage.  But yesterday I noticed that my downloaded videos could not be moved to their final folder by SickRage.  For some reason, the destination folder is now read-only.  I seem to be able to delete files and entire folders, but not to create new ones.  I was running low so I cleared old stuff, but I still cannot write any new files.

 

I have run the "Docker Safe New Perms" in the Tools section but that did nothing.  The "Fix Common Problems" plugin does say that one of the error is "Unable to write to cache" with the fix of "Drive mounted read-only or completely full." given, but I can't figure out how to fix that.

 

Anyone can point me in the right direction to fix that issue?

 

Thanks!

tower-diagnostics-20190626-0515.zip

Cache filesystem has metadata corruption, best way forward is to backup, re-format and restore cache data.

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Would you happen to have more detailed instructions on how to do that?

 

Thanks!

What part? backup and restore is copying data from one side to the other, to format just stop the array and change the filesystem to a different one, start array to format, then change back to original fs and format again.

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