Block device over the network

Hi all. I have a problem: I want to export over the network the block
device /dev/ttyS0 to use it as 'remote modem' from another machine,
connected to the server via ethernet. I've already tried nfs-user-server
(cannot read or write to the block device) and nbd-server/client (nothing
happens with this). I modified permissions (777) on the block device also,
but the problem remains.

Can someone help me?
bye
--
daniele_athome

daniele_athome wrote:

> Hi all. I have a problem: I want to export over the network the block
> device /dev/ttyS0 to use it as 'remote modem' from another machine,
> connected to the server via ethernet. I've already tried nfs-user-server
> (cannot read or write to the block device) and nbd-server/client (nothing
> happens with this). I modified permissions (777) on the block device also,
> but the problem remains.
>
> Can someone help me?
> bye
You failed to mention the network type.. samba is an option that works well
with smb4k

daniele_athome <(E-Mail Removed)> wrote:
> I want to export over the network the block device /dev/ttyS0 [...]

ls -l /dev/ttyS0
crw-rw---- 1 root dialout 4, 64 Jul 5 08:33 /dev/ttyS0

On my box this is a character device (which is to be expected for a
serial line).


> I've already tried nfs-user-server (cannot read or write to the
> block device)

NFS is for "real" files, and doesn't do anything with device nodes


> and nbd-server/client (nothing happens with this)

Possibly because NBD is for block devices, and ttyS0 is a character
device?


> Can someone help me?

Did you look at google? I entered "share modem device linux" and the very
first result was a link to the Modem Sharing mini-HOWTO, which explains
a simple way of resolving your problem.

Chris

chris-(E-Mail Removed) wrote:

> daniele_athome <(E-Mail Removed)> wrote:
>> I want to export over the network the block device /dev/ttyS0 [...]
>
> ls -l /dev/ttyS0
> crw-rw---- 1 root dialout 4, 64 Jul 5 08:33 /dev/ttyS0
>
> On my box this is a character device (which is to be expected for a
> serial line).
>
>
>> I've already tried nfs-user-server (cannot read or write to the
>> block device)
>
> NFS is for "real" files, and doesn't do anything with device nodes
>
>
>> and nbd-server/client (nothing happens with this)
>
> Possibly because NBD is for block devices, and ttyS0 is a character
> device?
>
>
>> Can someone help me?
>
> Did you look at google? I entered "share modem device linux" and the very
> first result was a link to the Modem Sharing mini-HOWTO, which explains
> a simple way of resolving your problem.
>
> Chris

Oh, I found a solution: I share the internet connection, instead of sharing
the modem

thank you anyway
--
daniele_athome

daniele_athome <(E-Mail Removed)> wrote:
> I want to export over the network the block device /dev/ttyS0 [...]

daniele_athome <(E-Mail Removed)> wrote:
> Oh, I found a solution: I share the internet connection, instead of
> sharing the modem

They are totally different requirements, both of which have their uses.

As a suggestion for the next time you post, please tell us what you
really want to achieve (and not particularly how you want to do it).

Regards,
Chris