Antony Parkin
2003-Jul-23 23:18 UTC
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 *********************************************************************
Steve Bonds
2003-Jul-24 01:10 UTC
Does block level replication require local disk access (Block lev el) or can it work with a network share too
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: lists.samba.org/mailman/listinfo/rsync > Before posting, read: catb.org/~esr/faqs/smart-questions.html >
jw schultz
2003-Jul-24 03:44 UTC
Does block level replication require local disk access (Block lev el) or can it work with a network share too
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? orRsync 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
Jan-Benedict Glaw
2003-Jul-24 06:10 UTC
Does block level replication require local disk access (Block lev el) or can it work with a network share too
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 : lists.samba.org/archive/rsync/attachments/20030723/d7ec34c9/attachment.bin