version 1.0.0, 2014-07-06 : Initial version
Simple quota management notesBasics to know about quota management.
To play with quotas on RHEL, you will need to use the
To check your kernel supports quotas, use:
grep -i config_quota /boot/config-$(uname -r)
quotaon /fs→ To turn quota tracking on for the "/fs" file system (Automatically called on boot, but can’t be called until the quota files are created in the root directory of the quota file system.)
quotaoff -a→ To turn quota tracking off for all file systems
edquota -u user01→ To edit the quota of user01
edquota -up user01 user02 user03→ To duplicate the quota configuration of user01 to user02 and user03
edquota -t→ To edit the grace period of quota on each file system
quota→ To display disk quota and usage
repquota -ugav→ To summarize user and groups quotas for all (non-NFS) file systems
quotacheck -ugm -a→ To scan all filesystems for disk usage, create, check and repair quota files
To specify that a filesystem is using quota, add
options to the filesystem in /etc/fstab. This will be taken in account at next
mount (you can use the
mount -o remount /fs to force a remount).
Or, to activate quota in a temporary way, just use:
mount -o usrquota,grpquota,remount /fs
Quota size are given in blocks of 1KB by default but you can specify units as usual (K, M, G and T).
If you don’t specify a grace period, the soft limit is the max. When a grace period is defined, the soft period acts like an alarm as long as the grace period is not reached and the hard limit is the max limit you can hit before the grace period expires.