-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Rsync server A is the master server, Servers B and C are is different parts of the world, and are set to mirror server A on a regular basis, but at different actual times (due to TZ differences). Server D is mirroring Server B. We'd like to change Server D to be mirroring Server C instead. Previously when I've swapped between servers like this, vast swathes of the archive are deleted and redownloaded (I use -av --delete-after) for no reason other than the timestamp being different. If I use -av -I, will it ignore the timestamps and only go on file size? The archive in question is a several hundred GB linux distro archive so I'd rather not have to redownload it :) Cheers, Mark. - -- Mark Watts Senior Systems Engineer QinetiQ Trusted Information Management Trusted Solutions and Services group GPG Public Key ID: 455420ED -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) iD8DBQFBlIU3Bn4EFUVUIO0RAr7VAJ4lWWdsZwypFZMUHq0Db6qz5ZZodQCfcOix wCD/bamHcsb+qgUc/pSFR/s=S3LD -----END PGP SIGNATURE-----
On Fri 12 Nov 2004, Mark Watts wrote:> > Server D is mirroring Server B. > > We'd like to change Server D to be mirroring Server C instead. > > Previously when I've swapped between servers like this, vast swathes of the > archive are deleted and redownloaded (I use -av --delete-after) for no reason > other than the timestamp being different.If rsync is used with -a, the timestamps _shouldn't_ be different.> If I use -av -I, will it ignore the timestamps and only go on file size?Yes.> The archive in question is a several hundred GB linux distro archive so I'd > rather not have to redownload it :)Oops... I tried to move a local Debian mirror (with daily snapshots that has unchanged files hardlinked to the previous day) to a larger system. I ran into the problem that the address space was too small for rsync's memory requirements (the process grew to 4GB then crashed on out of memory). I ended up doing each day separately with a --link-dest pointing to the previous day... Only took 5 days :-/ Paul Slootman
Hi. I am new to this newsgroup. Can any give me a reference to information about rsync performance. Is there any published work ? Suppose I want to sync several hundred GB. I expect 10% data difference. What should I expect in 1Gbyte LAN and what on T1 WAN ?. Thanks for the help! Israel Gold