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On Wednesday 08 Oct 2003 12:31 am, Mark Harvey wrote: > Strange. I did send it from a webmail client whilst at work rather than > from Kmail as normal at home. (Nural Storm webmail). I did wonder why I You could always send from the members area rather than webmail, if you need to post again in the same situation. Various webmail clients have horrible ways of wrecking the email headers. > Thanks for the suggestions. With the 10 - 20 minute cron job - would that > copy open files? We have a large number of transactions every day (I work Depends on what process has opened the file and how it has locked the file. cron is just the daemon that executes the script/program etc. Whether the file can be copied is up to the permissions/setup of the script/program called by cron. If it's a bash script, it would probably come down to whose crontab you use to install the cron task. > mis-quote Murphy). It is almost certain that there would be open files at > the time of the cron job. But each individual file wouldn't be open all the time, so cron / your script might get a chance to copy when the file is closed whilst the main process moves on to another task. e.g. MySQL only locks the tables when an insert or update is in progress (and even that's configurable) - select queries can wait until other processes are done. What size files are you thinking would be open? What type? How many? Isn't this getting into areas where RAID would become a practical solution? I have little experience of RAID but I believe it could give you a mirror type copy on the first server (which would deal with the immediacy of the data) and the backup server could copy that freely. -- Neil Williams ============= http://www.codehelp.co.uk/ http://www.dclug.org.uk/ http://www.isbn.org.uk/ http://sourceforge.net/projects/isbnsearch/ http://www.biglumber.com/x/web?qs=0x8801094A28BCB3E3
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