I’ve found that _cache directory is consuming 17GB of space which is under magento_root_folder/var/tmp/ directory. I removed it, but after 2 days, I’ve again received an alert regarding low disk space on magento_root_folder/var/tmp/ enter image description here

I stuck on it, hope anyone's help

  • You have to create cronjob which will delete every day mid night. On temp , CSS and js merge is saved Which is create based on customer session
    – Amit Bera
    Aug 30, 2022 at 8:17

1 Answer 1


The Magento/Adobe-suggested permissions (see here) make the pub/static file un-writable, so when the system tries to make a _cache folder and put .css and .js merge files in it, it can't and has to revert to the magento/var/tmp folder - and then it keeps adding those files again and again ad nauseam.


chmod 664 pub/static

(644 might do the job)

This is addressed, but not solved, here

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