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I had some mysql problems yesterday. I got "Too many connections" error on my sites because one of my script went a little bit crazy. After I fixed the connection problems I still got an error in mysql log.

/usr/sbin/mysqld: Disk is full writing

I checked my disk usage with "df -h" and I got this result:

Filesystem Size Used Avail Use% Mounted on

/dev/xvda1 3.0G 2.9G 0 100% /

none 530M 132K 530M 1% /dev

none 549M 0 549M 0% /dev/shm

none 549M 52K 549M 1% /var/run

none 549M 0 549M 0% /var/lock

So my "/dev/xvda1" file is full. I have no idea what this file doing, im really beginner on linux systems. My question is what should I do with it? Delete it?

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up vote 1 down vote accepted

If you delete that "file" you will be erasing your disk. /dev/xda1 is the the logical path that refers to your hard drive.

First of all check /var/log to see how big it is (go to the folder and do du -sh). Erase (extract first to another machine if you need them later) the logs of mysql if they are too big. My guess is your "crazy script" filled up your logs.

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Thank you for your fast answer Lucas, /var/log uses 971M I checked the biggest files in it. rewrite.log - 144M rewrite.log.1 - 641M Should I erase them? – martincpt Dec 7 '12 at 8:00
if there isn't anything in them you need, you can null them – Lucas Kauffman Dec 7 '12 at 8:32
Awesome thanks! It seems everything is working fine now. Have a nice day! – martincpt Dec 7 '12 at 8:47
Running a vm with 3GB diskspace is risky if you don't have proper logrotation rules in place. I would suggest that you read up on log rotation and keep log files for no more than 7 days, depending on your requirements. – Danie Dec 7 '12 at 8:49
@Danie Thanks for your advice, I'll look around. – martincpt Dec 7 '12 at 12:11

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