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PDF(1) |
FreeBSD General Commands Manual |
PDF(1) |
pdf —
display free disk space across a group of machines
pdf |
[-ln ] [-g
nodegroup1,...,nodegroupN]
[-m size]
[-t type]
[-w node1,...,nodeN]
[-x node1,...,nodeN]
[file | file_system ...] |
pdf displays statistics about the amount of free disk
space on the specified file_system or on the file system
of which file is a part on all machines in a cluster. If
neither a file or a file_system operand is specified,
statistics for all mounted file systems, on all machines are displayed
(subject to the -w , -x ,
-g , -m ,
-l and -t options below). The
following options are available:
-l
- Display statistics only about mounted file systems with the MNT_LOCAL flag
set. If a non-local file system is given as an argument, a warning is
issued and no information is given on that file system.
-n
- Print out the previously obtained statistics from the file systems. This
option should be used if it is possible that one or more file systems are
in a state such that they will not be able to provide statistics without a
long delay. When this option is specified,
pdf
will not request new statistics from the file systems, but will respond
with the possibly stale statistics that were previously obtained.
-g
- If the
-g option is specified, followed by a comma
separated list of group names, the command will only be run on that group
of nodes. A node may be a part of more than one group if desired, however
running without the -g option will run the command
on the same node as many times as it appears in the file specified by the
CLUSTER environment variable. This option is
silently ignored if used with the -w option.
-m
size
- Is used to limit the displayed file systems to only those with a capacity
greater than the user-supplied size argument. This
can be used to find filesystems over a given threshold.
-t
type
- Is used to indicate the actions should only be taken on filesystems of the
specified type. More than one type may be specified in a comma separated
list. The list of filesystem types can be prefixed with “no”
to specify the filesystem types for which action should
not be taken. If a file system is given on the command
line that is not of the specified type, a warning is issued and no
information is given on that file system.
-w
- If the
-w option is specified, followed by a comma
delimited list of machine names, the command will be
run on each node in the list. Without this flag,
pdf runs on the nodes listed in the file pointed
to by the CLUSTER environment variable.
-x
- The
-x option can be used to exclude specific
nodes from the cluster. The format is the same as the
-w option, a comma delimited list of machine
names. This option is silently ignored if used with the
-w option.
pdf utilizes the following environment variables.
CLUSTER
- Contains a filename, which is a newline separated list of nodes in the
cluster.
RCMD_CMD
- Command to use to connect to remote machines. The command chosen must be
able to connect with no password to the remote host. Defaults to
rsh
To find all the filesystems which are more than 90% full across your cluster,
you would issue:
Exit status is 0 on success, 1 if an error occurs.
The pdf command appeared in clusterit 1.0. It is based
on the pdf command in IBM PSSP.
Pdf was written by Tim Rightnour.
Output is formatted for 80 columns. This means that mount points and filesystems
with long names (> 20 characters) will be truncated. In addition, numbers
longer than 9 digits will be truncated as well.
pdf will only work on nodes that produce
the df(1)
output that it expects. It has been made to work on HP-UX, Solaris, and AIX,
along with any BSD, and most versions of Linux.
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