How to Make Local PCMCIA Memory Cards Available to Other Systems

You can configure your system to share its PCMCIA memory cards; in other words, you can make any PCMCIA memory cards in those drives available to other systems. Once your PCMCIA memory card drives are shared, other systems can access the PCMCIA memory cards they contain simply by mounting them, as described in "How to Access PCMCIA Memory Cards on Other Systems".

1. Become superuser.

2. Find out whether the NFS daemon (nfsd) is running.

   # ps -ef | grep nfsd root 14533 1 17 10:46:55 ? 0:00 /usr/lib/nfs/nfsd -a 16 root 14656 289 7 14:06:02 pts/3 0:00 grep nfsd

   If the daemon is running, a line for /usr/lib/nfs/nfsd will appear, as shown above. If the daemon is not running, only the grep nfsd line will appear.

3. Select an option from the following table.

   If ...	Then ...
   nfsd is running	Go to Step 8
   nfsd is not running	Continue with Step 4

4. Create a dummy directory for nfsd to share.

   # mkdir /dummy-dir

   dummy-dir

   Can be any directory name; for example, dummy. This directory will not contain any files. Its only purpose is to "wake up" the NFS daemon so that it notices your shared PCMCIA memory cards.

5. Add the following entry into the /etc/dfs/dfstab file.

   share -F nfs -o ro [-d comment] /dummy-dir

   When you start the NFS daemon, it will see this entry, "wake up," and notice the shared PCMCIA memory card drive. Note that the comment (preceded by -d) is optional.

6. Start the NFS daemon.

   # /etc/init.d/nfs.server start

7. Verify that the NFS daemon is indeed running.

   # ps -ef | grep nfsd root 14533 1 17 10:46:55 ? 0:00 /usr/lib/nfs/nfsd -a 16 root 14656 289 7 14:06:02 pts/3 0:00 grep nfsd

8. Eject any PCMCIA memory card currently in the drive.

   # eject pcmem0

9. Assign write permissions to /etc/rmmount.conf.

   # chmod 644 /etc/rmmount.conf

10. Add the following lines to /etc/rmmount.conf.

    # File System Sharing share floppy*

    These lines share any PCMCIA memory card loaded into your system's PCMCIA memory card drives.

11. Remove write permissions from /etc/rmmount.conf.

    # chmod 444 /etc/rmmount.conf

    This step returns the file to its default permissions.

12. Load a PCMCIA memory card.

    --Insert the PCMCIA memory card-- # volcheck -v media was found

    The PCMCIA memory card you now load, and all subsequent PCMCIA memory cards, will be available to other systems. To access the PCMCIA memory card, the remote user must mount it by name, according to the instructions in "How to Access PCMCIA Memory Cards on Other Systems".

13. Verify that the PCMCIA memory card is indeed available to other systems by using the share command.

    If the PCMCIA memory card is available, its share configuration will be displayed. (The shared dummy directory will also be displayed.)

    # share - /dummy ro "dummy dir to wake up NFS daemon" - /myfiles rw ""

Example--Making Local PCMCIA Memory Cards Available to Other Systems

The following example makes any PCMCIA memory card loaded into the local system's PCMCIA memory card drive available to other systems on the network.

# ps -ef | grep nfsd
    root 10127  9986  0 08:25:01 pts/2    0:00 grep nfsd
    root 10118     1  0 08:24:39 ?        0:00 /usr/lib/nfs/nfsd -a
# mkdir /dummy
# vi /etc/dfs/dfstab
(Add the following line:)
share -F nfs -o ro  /dummy
# eject pcmem0
# chmod 644 /etc/rmmount.conf
# vi /etc/rmmount
(Add the following line to the File System Sharing section:)
share floppy*
# chmod 444 /etc/rmmount.conf
(Load a PCMCIA memory card.)
# volcheck -v
media was found
# share
-               /dummy   ro   ""  
-               /pcmem/myfiles   rw   ""