Re: rsync hangs on checksum synchronization

Mon, 11 Apr 2005 06:37:42 -0700

FYI - I use rsync with checksums to synchronise from my laptop to work. It syncs to a HP binary of rsync at the other end. I found I had to use checksums because the time stamping was unreliable, transfering more than it needed to. I have found it to be very reliable since switching to checksums, but my database is much smaller, 591 files 477M.

I use this command:
rsync -crpz --progress --delete Makefile setup.exe setup.ini etc release engserv3:/netapp1/cad/users/jasonp/cygwin-beta/

On Cygin I have rsync  version 2.6.3  protocol version 28 (2.6.3-1)

On HP I have rsync  version 2.5.6  protocol version 26

Regards,
Jason

At 08:31 AM 4/9/2005, you wrote:


Hi everybody,

I'm experiencing another variant of the rsync hang-problem. I'm using rsync
locally to synchronize some large amount of data (~ 80 GB of media files)
with an attached USB harddrive. The command I use for everyday
synchronization reads as:

rsync -CvubrltgoD -v --delete --backup-dir=/CYGDRIVE/p/BACKUP
--exclude="System Volume Information" --exclude="RECYCLER"
--exclude="desktop.ini" --stats --progress /CYGDRIVE/m/ /CYGDRIVE/$1

This command just works as expected - no problems occur. However, I want to
run a cron job every month that performs a thorough, binary comparison
between the two trees. The command reads as:

rsync -cCvubrltgoD -v -v --delete --backup-dir=/CYGDRIVE/p/BACKUP
--exclude="System Volume Information" --exclude="RECYCLER"
--exclude="desktop.ini" --stats --progress /CYGDRIVE/m/ /CYGDRIVE/$1

As you will notice, the only noticeable difference is the additional
"-c"-switch which implies the use of checksums.

Running the second command results in a large list being built (locally,
from /CYGDRIVE/m/), which soon stops after about 100 files. The point where 
it stops is not identical all the time.

I don't know if I should attach the result of the cygcheck-command here
since it contains a large amount of data - if you need any more information,
please ask me to provide it. Google could not help me in this issue, and I
can't see why the command in question should not work.




'cygcheck -srv' is always a help.  I'd suggest *attaching* an uncompressed
version in any follow-up.  How large could it be?  Mine's 43K.

Also, please note that if any of your mounted drives ('/cygdrive/X')
require windows authentication to access, you'll have trouble with that
when running as a service (if the service is run as 'SYSTEM' rather than
under your Windows login).




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Larry Hall http://www.rfk.com
RFK Partners, Inc. (508) 893-9779 - RFK Office
838 Washington Street (508) 893-9889 - FAX
Holliston, MA 01746 




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