[ale] rsync issues

[scott]

you mentioned you are backing up to a CIFS share.  Can that be also exported as NFS?  if it will do both, mount up the share as NFS and do linux to linux from source to nfs mountpoint and you should be good.

Also you need to make sure you timeclocks on all devices are in sync.  Otherwise the timestamps are off and rsync thinks there has been changes.  Now you can tell it to ignore timestamps but the rsync is slower then since it has to do a checksum on every single file on both sides.  you have 5 small files not a big deal, but if you have hundreds or thousands (or more) and some of the files are large, then this can get to be a very long rsync time.

scott

On Dec 5, 2009, at 11:26 AM, Robert Coggins wrote:

> For the most part I am only concerned about the data in the files.  I am
> only doing this for backup purposes and if something happens where the
> privs or ownerships or anything else extended I can fix those if I ever
> need to restore.  But...  I say that now...  well, see.  I am just
> getting started on this little project and I have all kinds of ideas.
> 
> Thanks for all the help!
> 
> Robert
> 
> Michael H. Warfield wrote:
>> On Sat, 2009-12-05 at 00:31 -0500, Robert Coggins wrote: 
>>> I was trying the -av at first but I decided I would forego the -go part
>>> of -a due to the destination being a cifs share.  (sorry I didn't
>>> mention that at first)
>> 
>> That's an important little detail there.  At one time we did have a
>> problem in Samba that manifested itself as rsync recopying data.  Had
>> something to do with the time stamps and has since (I believe) been
>> fixed.
>> 
>> Wrt, the suggestions to use -av...  This probably doesn't apply to a
>> cifs share, IAC, but...  For those of you using rsync on *NIX to *NIX,
>> be aware at -av might not do everything you would like.  For one thing,
>> it does NOT preserve hard links and will result in two (or more) files
>> on the target instead of one hard-linked file.  It also does not
>> preserve extended attributes (which DEFINITELY does NOT apply to a CIFS
>> share).  Depending on what you are doing, you may want to a -H to
>> preserve hard links, and -A (and maybe also -X) for extended attributes.
>> When I'm going ext3 to ext3, I'm always using -avAHX.
>> 
>>> Rob
>> 
>> Mike
>> 
>>> Jim Popovitch wrote:
>>>> On Sat, Dec 5, 2009 at 00:06, Robert Coggins <ale at cogginsnet.com> wrote:
>>>>> good evening all,
>>>>> 
>>>>> If I run the following command 2 times in a row I should have data
>>>>> transferred only the first time right?
>>>>> 
>>>>> rsync -rlptDv /mnt/dir1 /mnt/dir2
>>>> Try:  rsync -av /mnt/dir1 /mnt/dir2
>>>> 
>>>> hth,
>>>> 
>>>> -Jim P
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