Package: rsync
Version: 2.6.9-2etch1
Severity: normal
I would think the protocol of rsync comparing remote files would allow
--link-dest= to operate at about the same speed regardless if a local
tree was linked first. Remote copies don't seem to speed up when using
--link-dest=.
host:/backups/production# make -n pull
rsync --delete --link-dest=backup-2009-01-27/ \
-avP u...@production.example.com: backup-2009-01-28/
host:/backups/production# make -n test
rsync --link-dest=backup-2008-11-10/ --link-dest=backup-2009-01-26/
--link-dest=backup-2009-01-27/ \
-avP backup-2009-01-27/ backup-2009-01-28/
Recently I ran the "test" then "pull" makefile targets, and I get
these results:
sent 56846 bytes received 7206502 bytes 120055.34 bytes/sec
total size is 4048809757 speedup is 557.43
host:/backups/production# du -sh backup-2009-01-28/
4.0G backup-2009-01-28/
I ran across this while creating a workaround for the remote lacking
support for allowing the local instance to operate more than one
--link-dest=. I got curious when it looked like copies were taking a
lot longer than I expected for so few changes between both hosts.
Cheers,
Scott Edwards
-- Daxal Communications - http://daxal.com/?from=debian+bts
-- System Information:
Debian Release: 4.0
APT prefers stable
APT policy: (500, 'stable')
Architecture: i386 (i686)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.18-6-xen-vserver-686
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Versions of packages rsync depends on:
ii libacl1 2.2.41-1 Access control list shared library
ii libc6 2.3.6.ds1-13etch5 GNU C Library: Shared libraries
ii libpopt0 1.10-3 lib for parsing cmdline parameters
ii lsb-base 3.1-23.2etch1 Linux Standard Base 3.1 init scrip
rsync recommends no packages.
-- no debconf information
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