Earlier tonight I was making some modifications on a web site I helped build and needed to verify that some things were not being stored in the cache. At the time I was testing the site with Mozilla Firefox version 3.5.7 and needed a quick way to open cache history and verify one specific file was not cached. Below is a brief explanation of how to use Firefox to verify its own cache and steps on how to verify a file in cache and then delete that same file from the Firefox cache.
There are a couple useful utilities on Linux to test disk input/ouput.
Sequential Disk Access: hdparm
The hdparm command will test sequential disk access and can be used with the below command. Replace /dev/sda1 with the mounted disk you would like to test such as /dev/hda1.
- hdparm -t /dev/sda1
The results will output similar to the below.
I saw these errors after a fresh install of CentOS 5.2 during the process of preparing the server for ISPConfig. If you try to enable quotas after getting this error then quotaon will simply explain it cannot find the files like the below.