Am 07.11.2012 00:16, schrieb lee:
> Reindl Harald <h.reindl@xxxxxxxxxxxxx> writes:
>> oversimplyfied:
>> * on both sides a rsync-process is running
>> * both are making a checksum of the same data-area
>> * let's say 250 blocks
>> * only this cheksum is transmitted and decides transmit data itself
>> * attributes are also listed on both sides and compared
>
> I thought it works like this, which involves reading all the files on
> both sides. For the purpose of copying files from one place to another
> on the same machine, I'm wondering if it might be more efficient to go
> by file modification times and file size
it does usually!
you can force --checksum as param
-c, --checksum skip based on checksum, not mod-time & size
but that does not change the fact that it syncs attributes too
without --checksum, i am using --checksum once per month to
make sure all is 100% consistent
rsync --help
man rsync
there are really A LOT of parameters
--dry-run as first one to test what happens in combination
with --progress / --verbose
"--times --update --perms --owner --group" without delete is
my favorite if i have to make small changes on php-modules to sync
back only my changed files and prevent overwrite files in upload-areas
while the worst-case here is that i push back a deleted file but users
not often delete anything :-)
"--exclude=folder1 --exclude=folder2" is also nice
-W, --whole-file copy files whole (without delta-xfer algorithm)
amkes sometimes sense if the checksum stuff is overhead for sure
--exclude=PATTERN exclude files matching PATTERN
--exclude-from=FILE read exclude patterns from FILE
-b, --backup make backups (see --suffix & --backup-dir)
--backup-dir=DIR make backups into hierarchy based in DIR
--suffix=SUFFIX set backup suffix (default ~ w/o --backup-dir)
finally: a swiss knife for dealing with file transfers
Attachment:
signature.asc
Description: OpenPGP digital signature
-- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
