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HappyDeveloper
Asked: 2011-02-23 13:11:09 +0800 CST

How to add disk space to /var/www for my websites?

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I did $ df -h and it threw this:

Filesystem            Size  Used Avail Use% Mounted on
/dev/md1              9.7G  1.7G  7.6G  18% /
/dev/md2              683G  211M  649G   1% /home
tmpfs                 4.0K     0  4.0K   0% /dev/shm

The problem is that my websites are located in /var/www, which I guess belongs to /, and they won't be able to use the disk space for things like images, that need to be placed inside the webroot, eg: /var/www/my_site/public_html/

What can I do about it? Should I move disk space from /home to / ? How? Or move the sites to /home ? Any thoughts?

Im using centos 5.5 and apache 2

linux centos php disk-space-utilization web

3 Answers

  1. You can remount /home/www in /var/www use bind mounts.

    Stop apache:

    # service apache2 stop

    Add in fstab line:

    /var/www /home/www bind defaults,bind 0 0

    Copy directory:

    # cp -pR /var/www/ /home/www

    Mount all:

    # mount -a

    Start apache:

    # service apache2 start
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  2. Best Answer

    Easier way will be to move the data to the larger partition, and symlink back into place.

     $ mv /var/www /home/
 $ ln -s /home/www /var/www
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  3. It looks like /dev/md2 is quite large, and perhaps should be carved-up using LVM? From the looks of things you have Metadevices setup, which I am guessing is basically your software RAID. you could dedicate md2 to LVM, and split it up into any number of Logical Volumes (LVs). The only difficulty is your /home which you would have to move, temporarily to get /dev/md2 established under LVM. I find that with LVM management of partitions and filesystems becomes a snap. It is always better to use LVM from the get-go, but there is no reason why you could not just migrate to it, partially or completely.

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