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How can I find out who wrote huge amount of data on disk?

va flag

I've noticed that free disk space has become smaller for some reasons. The graphs show that in about 15 minutes the disk was a quarter full. Can I find out who write this huge amount of data to the disk?

diya avatar
la flag
Maybe. Generally looking at what happened in the past requires that you set up detailed auditing/monitoring beforehand. Tools like `iotop` allow you to easily see which processes are currently generating the most IO. Finding disk hogs will find the UID (owner) and/or a location assigned to a designated process https://serverfault.com/a/1110248/984089 if/when the disk space is still in use. A temp file that already got deleted, is really hard to trace.
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