Dell PowerVault 720N, Command Reference Manual, Page: 557 / 606

Command ReferenceA-143
A user or group is specified by one of the following values:
a user or group name, which must appear in the password or group database
(either in the /etc/passwd or /etc/group file on the filer, or in the password or
group NIS map if NIS is enabled on the filer and is being used for the pass-
word or group database);
a numerical user or group ID;
the pathname of a file owned by that user or group.
The user or group identifier for a user or group quota can be followed by an @/
vol/
volume
string, which specifies the volume to which the quota applies. If the
string is omitted, the quota applies to the root volume.
A quota of type tree can only be applied to a qtree, which is a directory in the root
directory of a specified volume. A qtree is created with the qtree create or quota
qtree command.
User and group quotas can be created inside a qtree, so that the user’s or group’s
use of space or files within that qtree is restricted. This is done by specifying the
type as user@ tree or group@ tree where tree is the name of the qtree. In the
example above, we first limit overall usage in the qtree /vol/vol0/export and then
we restrict the user mhoward to 50 MB and 5,120 files under the /vol/vol0/export
tree. Similarly, the group stooges has been limited to 100 MB of disk space and
10,240 files under the /vol/vol0/export tree.
In any operation that creates files or writes to them, all applicable quotas must be
satisfied. For example, the user mhoward can write to a file in the /vol/vol0/export
tree if all of these requirements are met:
his total disk usage in the root volume does not exceed 500 MB
his total number of files in the root volume does not exceed 51,200
his usage within the /vol/vol0/export tree does not exceed 50 MB
his number of files within the /vol/vol0/export tree does not exceed 5,120
the space already in use in the /vol/vol0/export tree does not exceed 750 MB
the number of files in the /vol/vol0/export tree does not exceed 768,000
The asterisk (*) in the /etc/quotas file specifies a default user or a group quota
depending on the type. Any user or group that is not specifically mentioned in the
/etc/quotas file is subject to the limits of the default user or group. Default user or
group quotas can be specified on a per qtree basis or a per volume basis.
Disk and file size limits in the third and fourth columns of the /etc/quotas file ends
in ”K”, ”M”, or ”G”. ”K” indicates kilobytes (or kilofiles). That is, it multiplies the
limit by 1,024. Similarly, ”M” denotes megabytes (or megafiles) and ”G” denotes
gigabytes (or gigafiles). The default for the disk limit is kilobytes.
quotas