rsync - Jul 2003 - Does block level replication require local disk access (Block lev el) or can it work with a network share too

Could i run rsync on a linux server which is connected to a network share
(NAS) and replicate the diffs of the files residing on the network share? or
does this functionality require block level access i.e Local disk or SAN?
 
Many thanks,
Antony.


*********************************************************************
This e-mail and any attachment is confidential. It may only be read, copied and
used by the intended recipient(s). If you are not the intended recipient(s), you
may not copy, use, distribute, forward, store or disclose this e-mail or any
attachment. If you are not the intended recipient(s) or have otherwise received
this e-mail in error, you should destroy it and any attachment and notify the
sender by reply e-mail or send a message to sysadmin@bluearc.com
*********************************************************************

Rsync works entirely at the file level, and stores the "diffs" in a
temporary file until the transfer is complete.  No block/device level
access is needed.

  -- Steve

On Wed, 23 Jul 2003, Antony Parkin AntonyP-at-bluearc.com |Rsync List| wrote:
> Could i run rsync on a linux server which is connected to a network share
> (NAS) and replicate the diffs of the files residing on the network share?
or
> does this functionality require block level access i.e Local disk or SAN?
>  
> Many thanks,
> Antony.
> 
> 
> *********************************************************************
> This e-mail and any attachment is confidential. It may only be read, copied
and used by the intended recipient(s). If you are not the intended recipient(s),
you may not copy, use, distribute, forward, store or disclose this e-mail or any
attachment. If you are not the intended recipient(s) or have otherwise received
this e-mail in error, you should destroy it and any attachment and notify the
sender by reply e-mail or send a message to sysadmin@bluearc.com
> *********************************************************************
> 
> -- 
> To unsubscribe or change options:
http://lists.samba.org/mailman/listinfo/rsync
> Before posting, read: http://www.catb.org/~esr/faqs/smart-questions.html
>

On Wed, Jul 23, 2003 at 02:18:41PM +0100, Antony Parkin
wrote:
> Could i run rsync on a linux server which is connected to a network share
> (NAS) and replicate the diffs of the files residing on the network share?
or
Rsync will run just fine on network filesystems.

That said, due to the disk access pattern of the "rsync
algorithm" unless the bandwidth to the filesystem is a
multiple of the bandwidth of the rsync connection you will
get better performance using the --whole-file option.
> does this functionality require block level access i.e Local disk or SAN?
Rsync operates at the file level so it needs no access to
the block device.


-- 
________________________________________________________________
	J.W. Schultz            Pegasystems Technologies
	email address:		jw@pegasys.ws

		Remember Cernan and Schmitt

On Wed, 2003-07-23 14:18:41 +0100, Antony Parkin <AntonyP@bluearc.com>
wrote in message
<35265C2E6404DE45ABFA7C15EB0CFB1B19226E@ukexchange.terastack.bluearc.com>:
> *********************************************************************
> This e-mail and any attachment is confidential. It may only be read, copied
and used by the intended recipient(s). If you are not the intended recipient(s),
you may not copy, use, distribute, forward, store or disclose this e-mail or any
attachment. If you are not the intended recipient(s) or have otherwise received
this e-mail in error, you should destroy it and any attachment and notify the
sender by reply e-mail or send a message to sysadmin@bluearc.com
> *********************************************************************
Please do *never ever* send something like that to a public mailing
list.

Thanks, JBG

-- 
   Jan-Benedict Glaw       jbglaw@lug-owl.de    . +49-172-7608481
   "Eine Freie Meinung in  einem Freien Kopf    | Gegen Zensur | Gegen
Krieg
    fuer einen Freien Staat voll Freier B?rger" | im Internet! |   im Irak!
      ret = do_actions((curr | FREE_SPEECH) & ~(IRAQ_WAR_2 | DRM | TCPA));
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 189 bytes
Desc: not available
Url :
http://lists.samba.org/archive/rsync/attachments/20030723/d7ec34c9/attachment.bin