Quotas and Maximum Number of Files11- 11
Information generated by the maxfiles command is available through SNMP using
the Dell custom MIB. For more information about the MIB, see About the Dell Cus-
tom MIB in Chapter 4.
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To verify the amount of free disk space on the filer, enter the df command on the
filer. Information generated from the df command is also available through SNMP,
using the Dell custom MIB, which is described in About the Dell Custom MIB in
Chapter 4.
With the -i option, the command displays the number of used inodes and the num-
ber of available inodes. Following is an example of the df -i command:
df -i /vol/home
Filesystem iused ifree %iused Mounted on
/vol/home/ 240843 121525 66% /vol/home
The total amount of disk space shown in the df output is less than the sum of avail-
able space on all disks installed in the volume.
NOTE: As with the UNIX FFS (Fast File System), the filer reserves 10 percent of the
total disk space for efficiency, which df does not count as part of the file system
space.

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When you enter a df command with a path name on a client, the command returns
the amount of free space in the file system containing the path name. For example, if
the filer is mounted on the client as /t/filer, the df command on the client displays
the disk information about the /t/filer file system as follows:
df /t/filer/engineering/jdoe
Filesystem kbytes used avail capacity Mounted on
filer:/ 2097151 1646923 450228 79% /t/filer
However, if you defined qtrees on the filer, the information about available space
could be misleading because the actual space available might be less. For example, if
/engineering is a qtree with a disk quota of 1,800 MB, the space available in the /t/
filer/engineering directory is less than that in the df command output shown in the
preceding example.
If you have qtrees on the filer, Dell recommends that you mount each qtree sepa-
rately. For example, if the filer named filer has two qtrees, /vol/home/engineering and
/vol/home/marketing, mount filer:/vol/home/engineering and filer:/vol/home/market-
ing on two mount points, for example, /t/filer/engineering and /t/filer/marketing.