So apparently XenServer has "had" an issue with not deleting snapshots correctly, resulting in SR's running out of space. Here's the solution I found.
Tag - errors
Friday, December 20 2013
XenServer 6.2 Hidden Snapshots
By Phil on Friday, December 20 2013, 13:01 - Computing
Tuesday, April 6 2010
MediaWiki 404 Errors
By Phil on Tuesday, April 6 2010, 10:16 - Computing
Whenever a wiki page that doesn't exist is accessed in MediaWiki, it logs a 404 error in the Apache logs. This quickly adds up to a lot of false-positives on 404 reports for something that is normal operation for MediaWiki.
MediaWiki is doing the correct thing here -- if the page doesn't exist, then 404 should be the HTTP status code. But at the same time, as a system admin, I don't care about these particular 404 errors, so I don't want to be bothered by them in my logs.
