Agreed. But any process where file synch must occur must have provisions for bandwidth to support the load.<br><br>Realistically a better choice is to look at a distributed filesystem like GFS and it's cousins or block level processes like DRBD. But again it's going to eat up bandwidth.<br>
<br>That cron can be tuned to match a better "near realtime" definition. Once a file is dropped in bucket "A" how long really before it MUST be available to bucket "B" and what is the hard, real-time transfer latency between those two point? I've done the cron thing with an rsync process on a 5 minute interval on a winders system to keep a group of users working files safe even with power failures. Total PiTA but I made it work (rsync on cygwin with a samba server backend over a 100Mb ethernet). This also works for keeping two, distant postgresql servers in hot sync by transporting WAL files between the two (or more) systems.<br>
<br><div class="gmail_quote">On Wed, Jan 27, 2010 at 4:43 PM, Richard Bronosky <span dir="ltr"><<a href="mailto:Richard@bronosky.com">Richard@bronosky.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
1 minute cron on a potentially IO or net bound process sounds flaky<br>
to me. Sure you can use a lock file scheme, but it just feels like<br>
your working on iWheel 2.0<br>
<div><div></div><div class="h5"><br>
On Wed, Jan 27, 2010 at 4:40 PM, Jim Kinney <<a href="mailto:jim.kinney@gmail.com">jim.kinney@gmail.com</a>> wrote:<br>
> cron job on a 1 minute interval does a specific find for mtime -1 and<br>
> rsynchs those files over<br>
><br>
> On Wed, Jan 27, 2010 at 3:42 PM, David Ritchie <<a href="mailto:deritchie@gmail.com">deritchie@gmail.com</a>> wrote:<br>
>><br>
>> ALEers...<br>
>><br>
>> Looking trying to synchronize two file systems on an ongoing basis<br>
>> (i.e. a distributed file system). Just curious<br>
>> about your thoughts about things like rsync vs. Unison or other tools<br>
>> you have seen... Need to have files migrate over<br>
>> semi realtime (i.e. I drop a file in a directory, it should auto<br>
>> magically appear on a local directory on the remote machine - and<br>
>> there could be both data files and executable transferred)... Thoughts?<br>
>><br>
>> Best regards,<br>
>> Dave Ritchie<br>
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><br>
><br>
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> Actively in pursuit of Life, Liberty and Happiness<br>
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</div></div>.!# RichardBronosky #!.<br>
<div><div></div><div class="h5"><br>
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