Re: rsync and backup
Re: rsync and backup
- Subject: Re: rsync and backup
- From: John Cochrane <email@hidden>
- Date: Wed, 9 Aug 2006 17:56:14 +1000
Thanks Matthew and Gnarlie for the replies.
On 09/08/2006, at 2:36 PM, Matthew Smith wrote:
If one
of them is the remote volume locally mounted then this will slow down
rsync
as it will be reading the remote files on the local machine. This form
is
okay when using local volumes for backup.
I am syncing to a remote mounted volume.
I haven't yet checked with a firewire connected machine which sounds
like it should be faster.
On 09/08/2006, at 3:30 PM, Gnarlodious wrote:
rsync is built to crosstalk
with an rsync instance on your remote fileserver for optimum
efficiency.
Presently I am connecting from a machine running Tiger to a mounted
remote volume. Would the fact that the remote machine is running Jaguar
cause a slowdown?
rsync does not work well with AFP or SMB mounted disks.
rsync also uses SSH for passwordless transfer to and from the remote
server, so mounting the disk is not necessary.
I eventually gronked how to SSH from the man page but decided to mount
the volume instead because I wanted to make an Applescript solution
and the Terminal requires entry of a password for SSH.
This can be avoided by making authentication keys as described at
http://www.bombich.com/mactips/rsync.html but I was after a solution
that could be shared (non-commercially) and I found the described
procedure a bit daunting.
A more likely reason for the slow speed is that your version of rsync
is updating every file. For example, if you are connecting to a
Windows formatted disk rsync rsync will always updaye every file due
to an incompatibility in the Windows file modtime. To get around this
problem, use the "--size-only" parameter.
Not connecting to Windows (horror) and used the --size option without
any improvement.
Another problem with rsync is that the "E" switch has a bug in it,
since the resource file feature was recently added. The version of
rsync installed in 10.4 refuses to recognize modtimes of "Extended
attribute" files, and will always copy all resource forks regardless
of modtime. A more recent build of rsync fixes this bug,
http://lartmaker.nl/rsync/ which I have installed on my machines and
is working much better. I just replaced the existing rsync command
This is an interesting page. I am yet to install a program from the
command line but it looks like the time has come to do this and perhaps
even to delve into authentication keys.
Thanks again for your most helpful replies.
cheers
John
-- wishing there was more time in every day
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Applescript-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden