knowledgebase/linux/misc/disk quotas 1 Disk Quotas Disk quotas let you set the maximum amount of disk space a particular user is allowed to have on your server. The disk space used by a user is the sum of all the file sizes owned by their user id. 1 Enabling Disk Quotas Via /etc/fstab Disk quotas will only work if you have set a quota option in your /etc/fstab. You need to have a usrquota and/or grpquota option on the file system on which you wish to use quotas. e.g. in /etc/fstab you would have something like: {code} /dev/ubd0 / ext3 defaults,noatime,usrquota,grpquota 1 0 {code} The ubd0 bit may be something like ubd1, sda1, hda1 etc. Leave that part alone in your /etc/fstab. Just add the usrquota,grpquota part. 1 Setting Up Disk Quotas Then: {code:none} # reload the mount points with the quota settings enabled mount -o remount / #install quota (if not there alread) apt-get install quota # will set up the quota files quotacheck -acguvm # -m is needed, else you may get: # quotacheck: Cannot remount filesystem mounted on / read-only so counted values might not be right. # Please stop all programs writing to filesystem or use -m flag to force checking. # -c is needed, else you may get an error like # quotacheck: Can't find filesystem to check or filesystem not mounted with quota # edquota: Quota file not found or has wrong format. # quota: Quota file not found or has wrong format. # should happen on reboot (in /etc/rc.d/rc.sysinit) quotaon -avug {code} 1 Using Disk Quotas Now if you run: {code:none} repquota -a {code} It will show how much disk space each user is using. To assign a quota to a user (per http://www.tldp.org/HOWTO/Quota-4.html): {code:none} edquota -u ausername {code} 2005-12-01 19:49:02.0 2005-08-31 23:44:39.0