Scott Silva wrote:
on 1/30/2008 5:24 AM Jerry Geis spake the following:
hi all,
I use rsync to copy/backup ALL my stuff to another disk.
When I run this seems like my machine (4 GIG ram centos 5.1)
now begins to swap out more programs. Is there a way to reduce
that swapping? I am running with echo 1 > /proc/sys/vm/swappiness
I simply mount /dev/sdc1 /mnt/backup; mkdir /mnt/backup/month.day.year
then rsync -a /home /mnt/backup/mon.day.year
This is approximately 102G of data.
Thanks for any suggestions.
Jerry
Rsync's main benefit is on backups of changed files. dumping to a new
destination every time makes rsync less efficient than just about
every other option.
Now if you made the new directory, and hardlinked the old stuff to the
new directory, then rsync would shine.
I did the rsync hard link for a while. After 30+ hardlinks to each file
built up, filesystem operations slowed down - not in a killer way, but I
did notice it. I think it's better to just use --backup and write the
previous version to a new dir with --backup-dir=`date +%F` or some such
scheme. You don't see the backups represented as a whole directory
structure, but it's less messy.
--
Toby Bluhm
Alltech Medical Systems America, Inc.
30825 Aurora Road Suite 100
Solon Ohio 44139
440-424-2240
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