Re: can rsync scan files only with mtime since T?

2007-08-29 Thread Ming Zhang
On Wed, 2007-08-29 at 16:16 -0400, Matt McCutchen wrote: > On 8/24/07, Ming Zhang <[EMAIL PROTECTED]> wrote: > > performance wise, does rsync and unison has fundamentally different? > > because i saw unison document also mention delta detection algorithm > > like rsync. > > Unison does use the sam

Re: can rsync scan files only with mtime since T?

2007-08-29 Thread Matt McCutchen
On 8/24/07, Ming Zhang <[EMAIL PROTECTED]> wrote: > performance wise, does rsync and unison has fundamentally different? > because i saw unison document also mention delta detection algorithm > like rsync. Unison does use the same delta-transfer algorithm as rsync by default, so there is no fundam

Re: can rsync scan files only with mtime since T?

2007-08-24 Thread Ming Zhang
On Fri, 2007-08-24 at 09:47 -0400, Matt McCutchen wrote: > On 8/23/07, Ming Zhang <[EMAIL PROTECTED]> wrote: > > this one looks interesting! fire a flame here, which one is better, > > unison or rsync, for daily backup purpose? > > Fundamentally, rsync does stateless one-way copying and Unison doe

Re: can rsync scan files only with mtime since T?

2007-08-24 Thread Matt McCutchen
On 8/24/07, Jamie Lokier <[EMAIL PROTECTED]> wrote: > A really nice solution would be for rsync to use the rsync delta > transmission algorithm (or something like it) to compare the set of > file attributes between each end. I think this is an excellent idea, but it will take a considerable amount

Re: can rsync scan files only with mtime since T?

2007-08-24 Thread Jamie Lokier
Matt McCutchen wrote: > > Is this doable with current rsync? > > No. A request for enhancement has been entered for a --newer option > that would do this: https://bugzilla.samba.org/show_bug.cgi?id=2423 . > At present, I can think of two things you might try: > > 1. Use `find' to list the files

Re: can rsync scan files only with mtime since T?

2007-08-24 Thread Matt McCutchen
On 8/23/07, Ming Zhang <[EMAIL PROTECTED]> wrote: > this one looks interesting! fire a flame here, which one is better, > unison or rsync, for daily backup purpose? Fundamentally, rsync does stateless one-way copying and Unison does stateful two-way synchronization. Backup is one-way, so rsync is

Re: can rsync scan files only with mtime since T?

2007-08-23 Thread Ming Zhang
On Fri, 2007-08-24 at 09:52 +1200, Darryl Dixon - Winterhouse Consulting wrote: > > Hi > > > > I have a file system that contains millions of small files. Since I > > backup it everyday with rsync using slow WAN link, I think it will be > > nice that if rsync can do this: > > > > An option that let

Re: can rsync scan files only with mtime since T?

2007-08-23 Thread Ming Zhang
On Thu, 2007-08-23 at 18:25 -0400, Matt McCutchen wrote: > On 8/23/07, Ming Zhang <[EMAIL PROTECTED]> wrote: > > I have a file system that contains millions of small files. Since I > > backup it everyday with rsync using slow WAN link, I think it will be > > nice that if rsync can do this: > > > >

Re: can rsync scan files only with mtime since T?

2007-08-23 Thread Matt McCutchen
On 8/23/07, Ming Zhang <[EMAIL PROTECTED]> wrote: > I have a file system that contains millions of small files. Since I > backup it everyday with rsync using slow WAN link, I think it will be > nice that if rsync can do this: > > An option that let rsync only check with remote rsync daemon about lo

Re: can rsync scan files only with mtime since T?

2007-08-23 Thread Darryl Dixon - Winterhouse Consulting
> Hi > > I have a file system that contains millions of small files. Since I > backup it everyday with rsync using slow WAN link, I think it will be > nice that if rsync can do this: > > An option that let rsync only check with remote rsync daemon about local > files that has last modification time

can rsync scan files only with mtime since T?

2007-08-23 Thread Ming Zhang
Hi I have a file system that contains millions of small files. Since I backup it everyday with rsync using slow WAN link, I think it will be nice that if rsync can do this: An option that let rsync only check with remote rsync daemon about local files that has last modification time newer than on