On Tue, 30 Sep 2008, Pedro Martin wrote: > Hi, > > Our department has been using sec on different environments and so far > the results have been very good. We are very pleased with this handy > tool. Thanks, Risto :) > > However, right now we have a problem with one of the architectures in > which we are trying to deploy sec. > > We have three machines connected to a SAN. These machines use GFS so > that they can all see the same storage. Two of them write in it and > the other one only reads. The problem is that sec is not able to read > the files which are being written in this architecture as fast as it > should. > We have been experimenting with various ways of mounting the volumes, > but have found no solution so far. > > ?Has anybody encountered this problem? ?is there a way to tell sec how > to read the files so it does not get "stalled"?
I thinkyou are running into a limitation of GFS. if you think about what it needs to do under the covers to accept a write from one machine and make it visable to another machine the amazing thing isn't that it works so badly, but rather that it works at all. if you need communication between multiple machines don't try to use a filesystem to do it, setup the communication explicitly. it's a little more complicated to setup, but will work far more reliably. you can use a program like socat to listen on a filename on the sending machine so that the programs that are writing the files today don't have to be modified (beyond writing to the new location) and then have socat listeners on the other side to receive the data and feed it to SEC. another option is to setup a syslog type program that watches a file for updates and sends the updates to a syslog server on your SEC box (in many ways this is cleaner if you have multiple senders then the socat approach) David Lang ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Simple-evcorr-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/simple-evcorr-users
