.TH mmdelfs 02/16/06
mmdelfs Command
.SH "Name"
.PP
\fBmmdelfs\fR - Removes a GPFS file system.
.SH "Synopsis"
.PP
\fBmmdelfs\fR \fIDevice\fR [\fB-p\fR]
.SH "Description"
.PP
The \fBmmdelfs\fR command removes all the structures for the specified
file system from the nodes in the cluster.
.PP
Before you can delete a file system using the \fBmmdelfs\fR command, you
must unmount it on all nodes.
.PP
\fBResults\fR
.PP
Upon successful completion of the \fBmmdelfs\fR command, these tasks are
completed on all nodes:
.RS +3
.HP 3
\(bu Deletes the character device entry from \fB/dev\fR.
.HP 3
\(bu Removes the mount point directory where the file system had been
mounted.
.RE
.SH "Parameters"
.PP
.RS +3
\fB\fIDevice\fR
\fR
.RE
.RS +9
The device name of the file system to be removed. File system names
need not be fully-qualified. \fBfs0\fR is as acceptable as
\fB/dev/fs0\fR.
.PP
This must be the first parameter.
.RE
.SH "Options"
.PP
.RS +3
\fB-p 
\fR
.RE
.RS +9
Indicates that the disks are permanently damaged and the file system
information should be removed from the GPFS cluster data even if the disks
cannot be marked as \fBavailable\fR.
.RE
.SH "Exit status"
.PP
.PP
.RS +3
\fB0
\fR
.RE
.RS +9
Successful completion.
.RE
.PP
.RS +3
\fBnonzero
\fR
.RE
.RS +9
A failure has occurred.
.RE
.SH "Security"
.PP
You must have root authority to run the \fBmmdelfs\fR command.
.PP
You may issue the \fBmmdelfs\fR command from any node in the GPFS
cluster.
.PP
When using the \fBrcp\fR and \fBrsh\fR commands for remote
communication, a properly configured \fB.rhosts\fR file must exist
in the root user's home directory on each node in the GPFS
cluster. If you have designated the use of a different remote
communication program on either the
\fBmmcrcluster\fR
or the
\fBmmchcluster\fR command, you must
ensure:
.RS +3
.HP 3
1. Proper authorization is granted to all nodes in the GPFS cluster.
.HP 3
2. The nodes in the GPFS cluster can communicate without the use of a
password, and without any extraneous messages.
.RE
.SH "Examples"
.PP
To delete file system \fBfs0\fR, issue this command:
.sp
.nf
mmdelfs fs0
.fi
.sp
.PP
The system displays information similar to:
.sp
.nf
mmdelfs: 6027-1366 Marking the disks as available
GPFS: 6027-573 All data on following disks of fs0 will be destroyed:
    gpfs9nsd
    gpfs10nsd
    gpfs15nsd
    gpfs17nsd
GPFS: 6027-574 Completed deletion of file system fs0.
mmdelfs: 6027-1371 Propagating the changes to all affected
                   nodes. This is an asynchronous process.
.fi
.sp
.SH "See also"
.PP
mmcrfs Command
.PP
mmchfs Command
.PP
mmlsfs Command
.SH "Location"
.PP
\fB/usr/lpp/mmfs/bin\fR
.PP