Sorry, I just couldn't resist. That's probably the only time I'll ever get to use that joke. I had a situation recently where I had a system that kept giving errors that the root volume was full, yet df -h showed plenty of available space. After doing a bit of digging, I found that there were hordes of tiny files chewing up inodes far faster than the space on the drive. Essentially, this would be like filling a file cabinet full of folders with only a post-it note inside each folder. The majority of the volume of the cabinet would be taken up with folders rather than "data."
I could detail how to diagnose and fix this issue, but someone has already written an excellent blog post on how to do just that.
No space left on device – running out of Inodes
Thanks to Ivan Kuznetsov for taking the time to post his tutorial!
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