Copying open and incremental file

guppista · 05-06-2010, 02:46 PM

Hi all,

I'm getting a video from a camera connected to the computer and saving it to a constantly increasing file.

The thing is that I'm trying to make a non-stop copy of this file over the network (i.e. using scp, rsync or something like that).

Does anybody knows how to do it?

Thanks

acid_kewpie · 05-06-2010, 03:16 PM

well a proper network filesystem would be the sane way to do it, i.e. NFS. If you don't have NFS for some reason, I'd image than a fuse project like SSHFS to let you mount a file system locally over SSH as the protocol, should also work OK. I don't know if it has any specific issues about opening and closing file handles and how it writes, but I'd imagine it'd work. Keeping a file continually open is not really fun though, is there no way to save smaller multiple files or such?

guppista · 05-07-2010, 04:17 PM

Quote:

Originally Posted by acid_kewpie

well a proper network filesystem would be the sane way to do it, i.e. NFS. If you don't have NFS for some reason, I'd image than a fuse project like SSHFS to let you mount a file system locally over SSH as the protocol, should also work OK. I don't know if it has any specific issues about opening and closing file handles and how it writes, but I'd imagine it'd work. Keeping a file continually open is not really fun though, is there no way to save smaller multiple files or such?

Nice idea. But, using NFS, if the server stops for some reason, I won't be able to see the files.

I there an option in some NFS to make a real-time copy of the files from the NFS server to my local machine?

About the smaller multiple files, actually I'm making movie files hour by hour.

Thanks for the fast help.

speck · 05-07-2010, 06:18 PM

If the computer that has the camera attached also serves as the NFS server, then the remote machine could drop connection and it wouldn't affect your ability to see the files locally. You didn't say, but I'm guessing the local machine with the camera is running Linux.

guppista · 05-07-2010, 09:58 PM

Quote:

Originally Posted by speck

If the computer that has the camera attached also serves as the NFS server, then the remote machine could drop connection and it wouldn't affect your ability to see the files locally. You didn't say, but I'm guessing the local machine with the camera is running Linux.

Sorry, I made a little confusion here.

When I said local machine I meant the computer who is trying to copy in real-time the files from the computer that has the camera attached. I want to copy this video files from the computer who is recording it into another machine.

Actually, I just don't want to save the video files only in the computer that has the camera attached but also try to save this files in another computer over the network in real-time or near it.

Thanks.