similar to: Rolling Checksum Algorithms

Hi, Is there a way in which rsync's -z compression (zlib) utility can be benchmarked? I'm trying to compare the compression ratio between rsync and external compression tools like gzip and bzip2. Are there any advantages to using rsync's internal compression mechanism specified with the -z option compared to solely applying external compression i.e. bzip2 to the files and invoking

I'm interested in these very questions (librsync-rsync relationship, remaining limitations of rsync, active prospects for ground-up rewrites), Google searches for rsync info have proved a little too vague due to the programs ubiquity. Much has certainly changed since this was written, could some people with knowledge in these areas could update martin's response for the state of rsync,

What is the general recommendation for compression when using ssh? Is it a wasteful performance hit to have both ssh and rsync do compression (when using rsync over ssh)? If so, is there a clear prefference which is more efficient, rsync or ssh? Brian K. White -- brian@aljex.com -- http://www.aljex.com/bkw/

Has xdelta (in ports under misc/xdelta) ever been considered as a means of delivering binary patches for security updates? It seems to be a pretty neat. -- Regards, Michael Nottebrock -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 187 bytes Desc: signature Url :

Hello, I'm currently evaluating the possibility of implementing a rsync client in a project for my company. The platform used is currently not supported and implementing the client from scratch currently seems to be the most feasible approach. For that I'd be very much interested in a description of the protocol that rsync talks on port 873. Is such a description available somewhere? I

I've been working for the past few months with open-source solutions for syncing Palm PDAs (Coldsync, mostly). I've been becoming increasingly annoyed with Palm's Desktop Link Protocol and the sync mechanism, and am considering replacing it with a third-party application for the Palm. Since I've had good luck with rsync in the past, its seemed an obvious choice. I've

Hello, just being fascinated by rsync I wanted to look at the distribution files at ftp://rsync.samba.org, but it was not possible to get a ftp connection to that address. Is the ftp service down there? Thanks in advance for any soon helpful hint. Have a nice day Michael -- Michael Schmidt mschmidt@fh-koblenz.de MIRROR OF Ghostscript * X-Windows X11

hello, I'm new to this list. here is my question: I would like to synchronize two computers (say the home one and the job one) using zip drives or similar (cdroms, etc), since modem lines are quite slow and expensive (in Italy). I though I could produce the "signature" of files on home computer, store it on a zip, go to job, run rsync to copy the missing or altered files on

Dear guru's Hopefully someone can shed some light in my issue. I have created a queue with a ringall strategy and all works fine. I want a caller to be able to exit the queue so they can leave a message. I've added the H option in queue command so callers can press * to exit. So far all well, on the cli there is a message the caller pressed * and the extensions stops ringing. But

I'm working on a commercial project that would benefit immensely from the use of rsync. However, I cannot convince management that rsync is a worthy tool due to the rote "it's shareware, it's not supported" FUD. Are there any documented, corportate users of rsync? Testimonials? In short, how do I drag this risk-averse group out of the FTP age into the rsync present? /p

Hi, while implementing the rsync protocol in one of our projects I found that the current CVS version still has a MD4 bug. I'm using the FreeBSD libmd implementation and I still had checksum mismatches with protocol version 27 for files whose size was a multiple of 64 - 4 ( - 4 due to checksum_seed). A patch for todays CVS version is attached. Someone should also review the clean_fname()

The packaging/lsb/rsync.spec file is broken as shipped: It has a "Sept" month (rpmbuild here takes only 3-letter month names), and RH gzips the manpages, so the %files list can't find them. I also added doc/README-SGML and doc/rsync.sgml to the %doc files. Patch follows. Thanks for all the good work! --- rsync-2.5.6/packaging/lsb/rsync.spec.orig 2003-01-28 06:28:35.000000000 +0100

Mark II of the patch set. The first patch (dynsumlen2.patch) increments the protocol version to support per-file dynamic block checksum sizes. It is a prerequisite for varsumlen2.patch. varsumlen2.patch implements per-file dynamic block and checksum sizes. The current block size calculation only applies to files between 7MB and 160MB setting the block size to 1/10,0000 of the file length for a

Hi, I have a project where I have to backup (copy /dev/hda on a server) and recover (copy back) hardrives from the clients. I tried this with rsync using: BACKUP: rsync /dev/hda user@host:/path/to/image RECOVER: rsync user@host:/path/to/image /dev/hda There is a problem when accessing devices like /dev/hda. The transfer aborts after a few seconds with the error message: write failed on

On Thu, 2004-04-08 at 12:36, Martin Pool wrote: > On 5 Apr 2004, Donovan Baarda <abo@minkirri.apana.org.au> wrote: > > > librsync needs a whole file checksum. Without it, it silently fails for > > case 1), 3), and 4). > > Yes, a whole-file checksum should be used with it. Presumably > something stronger than md4 like SHA-1. md4 is probably good enough for most

A new version of rsync has been released: rsync 2.5.4 (13 March 2002) "Imitation lizard skin" BUG FIXES: * Additional fix for zlib double-free bug. (Martin Pool, Andrew Tridgell) (CVE CAN-2002-0059) ENHANCEMENTS: * Merge in changes from zlib 1.1.3 to zlib 1.1.4. (Jos Backus) (Note that rsync still uses a custom version of zlib; you can not just

A new version of rsync has been released: rsync 2.5.4 (13 March 2002) "Imitation lizard skin" BUG FIXES: * Additional fix for zlib double-free bug. (Martin Pool, Andrew Tridgell) (CVE CAN-2002-0059) ENHANCEMENTS: * Merge in changes from zlib 1.1.3 to zlib 1.1.4. (Jos Backus) (Note that rsync still uses a custom version of zlib; you can not just

Hi, The following lines in compat.c are rather imprudent: if (read_batch || write_batch) checksum_seed = 32761; else checksum_seed = time(NULL); write_int(f_out,checksum_seed); Setting checksum_seed to a constant in batch mode means block collisions are reproducible and predictable. Thus, some files will be permanently "unlucky" in batch mode and will

Hi all! I want to make a similar table as on the tech report at http://rsync.samba.org/tech_report/node6.html But with which command rsync shows me these stats? With --stats I get the heap statistics. I didn't find anything about the abbreviations. Could someone tell me please what e.g. ordblks, hblkhd, etc. mean? (I know that blk=block) :) Thanks very much. David

Is anyone else concerned about the fact that rsync doesn't guarantee to produce identical file copies on the the target machine? Don't get me wrong in sounding critical because I think that rsync is a great example of how software should be written. (I often make the observation, as I learn more about Linux, and inevitably find myself comparing open source applications to Microsoft