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- '\"
- '\" Copyright 1992 Regents of the University of California
- '\" Permission to use, copy, modify, and distribute this
- '\" documentation for any purpose and without fee is hereby
- '\" granted, provided that this notice appears in all copies.
- '\" The University of California makes no representations about
- '\" the suitability of this material for any purpose. It is
- '\" provided "as is" without express or implied warranty.
- '\"
- '\" $Header: /user5/mottsmth/j/d/jcopy.man,v 1.8 92/05/07 09:02:14 mottsmth Exp $ SPRITE (Berkeley)
- '\"
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- .HS jcopy cmds
- .BS
- '\" Note: do not modify the .SH NAME line immediately below!
- .SH NAME
- jcopy \- Perform volume-to-volume copy on Jaquith system
- .SH SYNOPSIS
- \fBjcopy\fR [\fB-srcvol \fIvolumeId\fR] [\fB-destvol \fIvolumeId\fR]
- [\fB-v\fR] [\fB-mgrserver \fIhostname\fR] [\fB-mgrport \fIport\fR]
- [\fB-updatefreq \fIfilecount\fR] [\fB-bufsize \fIbytes\fR]
- .SH OPTIONS
- .IP "\fB\-srcvol\fR" 14
- The source volume Id.
- .IP "\fB\-destvol\fR" 14
- The destination volume Id.
- .IP "\fB\-v\fR" 14
- Turn on verbose mode which prints status during operation.
- .IP "\fB\-mgrServer \fIhostname\fR" 14
- Specifies host where Jmgr server is running.
- .IP "\fB\-mgrPort \fIport\fR" 14
- Specifies port number where Jmgr server is running.
- .IP "\fB\-updatefreq \fIfilecount\fR" 14
- Report progress every \fIfilecount\fR files.
- This parameter is ignored if the \fB-v\fR is not given.
- .IP "\fB\-bufsize \fIbytes\fR" 14
- Transfer data in units of size \fIbytes\fR.
- .BE
- .SH DESCRIPTION
- .PP
- \fBJcopy\fP is volume-to-volume utility for the Jaquith system.
-
- .PP
- Jcopy copies one Jaquith volume to another, in its entirety.
- The assumption is that the source tape is growing old and
- that the data is being rolled forward to a new tape.
- Therefore, Jcopy attempts to keep Jaquith's view of the world
- up-to-date by editing various configuration files. The
- user is prompted about these changes at the appropriate time.
-
- .PP
- Omitting the \fB-destvol\fR option entirely will cause jcopy to
- obtain a volume from Jaquith's free volume list.
-
- .PP
- Jcopy negotiates with jmgr to mount the volumes. This means that
- jcopy can run while the system is publicly available.
-
- .PP
- Jcopy does not connect to the public port managed by the Jaquith
- process to discourage its use as a client program. This is
- because Jcopy makes no attempt to obtain the two devices atomically.
- Therefore it's possible for two jcopy processes to deadlock, each
- holding 1 device and unable to get the other.
-
- .SH BUGS
- None known.
-
- .SH "SEE ALSO"
- jaquith jmgr jls jstat jput jget jctrl jclean jbuild
-
- .SH KEYWORDS
- jaquith archive
-
-