quotacheck (8)
scan a file system for disk usages
SYNOPSIS
quotacheck
[-g] [-u] [-v] -a
quotacheck
[-g] [-u] [-v] filesys ...
DESCRIPTION
Quotacheck
performs a filesystems scan for usage of files and directories, used
by either user or group. The output is the quota file for the
corresponding filesystem. By default the names for these files are:
- A user scan:
quota.user
- A group scan:
quota.group
The resulting file consist of a
struct dqblk
for each possible id up to the highest existing uid or gid and contains the
values for the disk file and block usage and possibly excess time for these
values. ( for definitions of
struct dqblk
see
lt;linux/quota.hgt;
)
Quotacheck
should be run each time the system boots and mounts non-valid file systems.
This is most likely to happen after a system crash.
The speed of the scan decrease with the amount of directories increasing.
The time needed doubles when disk usage is doubled as well. A 100 MB partition
used for 94% is scanned in 1 minute, the same partition used for 50% is
done in 25 seconds.
OPTIONS
-v
This way the program will give some usefull information about what it is
doing, plus some fancy stuff.
-d
This means debug. It will result in a lot of information which can be used
in debugging the program. The output is very verbose and the scan
will not be fast.
-u
This flag tells the program to scan the disk and to count the files and
directories used by a certain uid. This is the default action.
-g
This flag forces the program to count the the files and directories
used by a certain gid.
-a
Check all of the quotas for the filesystems mentioned in /etc/fstab. Both
user and group quotas are checked as indictated by the /etc/fstab options.
-R
When used in conjunction with -a, all filesystems except the root
filesystem are checked for quotas.
NOTE
Quotacheck
should only be run as Super User. Non-privilidged users are presumably not allowed
to read all the directories on the given file system.
SEE ALSO
FILES
quota.user, quota.group, /etc/fstab
AUTHOR
Edvard Tuinder lt;ed@elm.netgt;
Marco van Wieringen lt;mvw@planets.elm.netgt;
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