Uploading file over 2mb throws error "Failed to write file to disk."

Hello. I’ve been trying to dig into this issue for hours with no avail, I’d love any help or pointers in the right direction!

If I upload a file >2mb in the media modal I’m getting: “Failed to write file to disk.”

If I upload it in Media -> New using the HTML uploader I get the error: “Error saving media attachment”.

It’s not a permissions issue because if I upload a small image everything works correctly.

I have in my nginx config:

http {
    client_max_body_size 200M;
}

and php.ini:

post_max_size = 200M
upload_max_filesize = 200M

Which is working because on the upload screen WordPress says: “Maximum upload file size: 200mb”

Also, I don’t believe it’s a space issue:

root@pluto:/# df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/xvda        95G   51G   43G  55% /
devtmpfs        2.0G  4.0K  2.0G   1% /dev
none            401M  168K  400M   1% /run
none            5.0M     0  5.0M   0% /run/lock
none            2.0G     0  2.0G   0% /run/shm
overflow        1.0M     0  1.0M   0% /tmp

This is really stumping me – I appreciate any help!!

It was working before until I restarted my server, and something went wonky — it’s really difficult troubleshooting what exactly is going on.

When I turn on WP_DEBUG and the debug log I can’t find any trace of the error.

Thanks
-Ryan