The LayGO PXS has limited onboard storage, so in applications where the PXS serves as a front end processor, downloading data for off-site processing, it requires the services of a file server to manage interaction with a file system. LayGO Remote File Servers fulfill this role. They listen for connections on TCP port 2717 and accept requests to create files and write data into them. They are mutithreaded and can handle simultaneous downloads from multiple clients.
laygorfs.exe is a Windows NT service version of the remote file server which can be installed under Windows NT, Windows 2000 or Windows XP. To install it, place it in a directory on the local hard drive. Then open a Command Prompt window, change to that directory and execute it with the command line:
C:\> laygorfs -install -d <directory>
where <directory> is where you want the files created by the service to be stored. The directory can be (but doesn't have to be) the same directory.
For instance, if the service file is in c:\laygo and the log files are to
be placed in e:\pxs\data, the sequence of commands would be:
C:\> cd \laygo C:\> laygorfs -install -d e:\pxs\data C:\> net start laygorfs
In this case, the downloaded data files would be stored subdirectories of
e:\pxs\data named by with the tag assigned to the PXS.
By default, the service is installed to start automatically each time the system boots.
You can add a -m to the install command line to configure it to be
started manually. You will then need to use the net command (net start laygorfs) or the
Service Manager applet in the Control Panel to control it.
Note: laygorfs is a replacement for wxrfssrv. They cannot be run at the same time as one or the other will not be able to open the required TCP port.
laygorfsd is a Unix daemon program for Linux and Solaris.
laygorfsd
Optional command line parameters are as follows:
[-d <directory name>] the directory where the data subdirectories and
error files will be written.
[-e <error file>]
[-l <log file>]
[-p <port number>]
[-u <user name>]
[-w <working directory>] where the <directory name> will be created
[-x] disable daemonization
The defaults for the optional command line parameters are as follows:
directory name = data error file = /dev/console log file = /dev/console port number = 2717 user name = current user working directory = current directory daemonization = enabled
For instance, assume that laygorfsd is in the
/usr/pxs/bin directory, that you want the data
directories to be in /usr/pxs/data and that you
are logged as root. The following commands will start the daemon:
>cd /usr/pxs/bin >./laygorfsd -w /usr/pxs -u pxs
We are also assuming here that a user called pxs has been created
and that this user is the owner of the /usr/pxs directory.
To terminate laygorfsd, use the ps command to find the process id, then enter:
>kill -HUP <process id>
laygorfsi a version of the file server for Linux and Solaris designed to be run by xinetd. The following is a sample xinetd configuration file:
#
# LayGO Remote File System service
#
service rfs
{
type = UNLISTED
flags = KEEPALIVE
socket_type = stream
protocol = tcp
wait = no
user = rfs
server = /var/rfs/laygorfsi
server_args = -d /var/rfs/data
port = 2717
disable = no
}
laygorfsi uses the local syslog facility for logging.