How to troubleshoot Service Unavailable (HTTP 503) for single website

[msaladna]

Maximum filesize is 4 GB to restrict runaway logging… which is exactly what happened here. It may be overridden using the system.process-limits Scope.

ETA: here’s a related post that walks through validating the limit:

4G file size limit , in 5+ config (still missing one?) driving me nuts

What’s the HTTP response code? What application is accepting the upload? Does it always fail at the 4 GB boundary? You’d need to alter the value in: limits.conf using system.process-limits, this affects the max file size created within vfs; can be tested within the account using dd if=/dev/zero of=~/file bs=1G count=5 Apache may be overrode using LimitFSIZE, its primary purpose is to throttle logfiles from running away If uploaded by from a PHP app, per-site by overriding resources.file_size …