Re: [webmin-l] webmin remote filesystem backup with ftp

[Jamie C. <jca...@we...>]

On 7/Aug/2006 00:54 Pat Erler wrote ..
> hi jamie,
> 
> great! while you are on it, i tested a lot of backup programs which  
> support ftp transfers. as i realized, the holy grail seems to be (which
> noone has found yet, i mean, it's the holy grail ;) ) to make a backup
> (and restore btw) to a remote server without firstly creating the whole
> archive locally (so that you don't need +50% free hdd space)

Hopefully this will be possible .. assuming that the tar command calls me
FTP script in the right way.

> it could work like this:
> 
> 1) start multiple splits backup
> 2) when backup part$1 filesize=x
> 	2-1) pause backup
> 	2-2) move part$1 to remote server (then delete it)
> 3) goto 1)
> 
> for restore, this is what i wrote to one of the developers of a commercial
> solution (which doesn't offer it):
> 
> ==cut--
> - i have a multi-volume tgz backup on an ftp server
> - i have not enough room on the target server (the one on which the  
> restoration of the data will happen) to download first all archives and
> than extract them
> 
> so what can i do here? ideally i would download the first volume, do a
> 
> gunzip -c -S "" ./backup.tar.gzaa |tar -C ./ -xf -
> 
> when the first one is extracted i delete it, download the second and so
> on..
> 
> but after the first archive everything comes to a halt with
> 
> gunzip: ./backup.tar.gzaa: unexpected end of file
> tar: Read 8667 bytes from -
> tar: Unexpected EOF in archive
> tar: Unexpected EOF in archive
> tar: Error is not recoverable: exiting now
> ==cut--
> 
> which seems to be a limitation in gzip - maybe bzip handles it better..
> 
> anyway, thanks jamie, that you took on the problem,

I don't think it is possible to do multi-part remote backups anyway, and almost
certainly won't be possible to do them over FTP..

 - Jamie

> PAT
> 
> 
> 
> 
> 
> 
> On Mon, 07 Aug 2006 02:43:13 +0200, Jamie Cameron <jca...@we...>
> wrote:
> 
> > On 6/Aug/2006 14:54 Pat Erler wrote ..
> >> hello,
> >>
> >> in my hosting plan i have backup space which i can use with ftp,
> >> unfortunately not with ssh. are there plans to add transferring backups
> >> with ftp to the webmin filesystem backup? or, which custom command could
> >> i use from within the module to transfer my backup file with ftp to
> the
> >> backup server?
> >
> > Hi Pat,
> > That would be a nice feature, but is tricky to implement as the
> > tar and fsdump commands are designed to call ssh or rsh for remote
> > backups.. However, I may be able to hack in support for a command
> > that behaves like ssh, but uses FTP. I'll see if this can be done
> > in the next Webmin release..
> >
> >  - Jamie
> >
> > -------------------------------------------------------------------------
> > Take Surveys. Earn Cash. Influence the Future of IT
> > Join SourceForge.net's Techsay panel and you'll get the chance to share
> > your
> > opinions on IT & business topics through brief surveys -- and earn cash
> > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
> > -
> > Forwarded by the Webmin mailing list at  
> > web...@li...
> > To remove yourself from this list, go to
> > http://lists.sourceforge.net/lists/listinfo/webadmin-list
> 
> 
> 
> -------------------------------------------------------------------------
> Take Surveys. Earn Cash. Influence the Future of IT
> Join SourceForge.net's Techsay panel and you'll get the chance to share
> your
> opinions on IT & business topics through brief surveys -- and earn cash
> http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
> -
> Forwarded by the Webmin mailing list at web...@li...
> To remove yourself from this list, go to
> http://lists.sourceforge.net/lists/listinfo/webadmin-list