On Thursday 01 December 2005 10:02 pm, Ross Werner wrote: > On Thu, 1 Dec 2005, Nicholas Leippe wrote: > > As for rsync'ing an entire drive, are you doing so with the source drive > > mounted rw? Cause if so, you may not get a 'snapshot' of the drive. > > Depending on the apps using the drive, this could cause serious problems. > > In my case, I'm primarily backing up data partitions--I'm not so concerned > about the Linux install or the applications themselves. For things like > databases I dump to an SQL file before I do the backup anyway (it's a > beast to restore databases from the actual data files the db uses, when > it's even possible). > > Out of curiousity, what sort of apps could cause serious problems when > rsyncing a drive mounted rw?
Any application that relies on the coherency of multiple, volatile files--ie they correlate differently over time. - databases - any application that produces temporary files (web server session data, perhaps?) I'm sure there are others. This is the reason point-in-time backup systems are so expensive--it's a very difficult problem to solve in a manner that is completely transparent to running processes. -- Respectfully, Nicholas Leippe Sales Team Automation, LLC 1335 West 1650 North, Suite C Springville, UT 84663 +1 801.853.4090 http://www.salesteamautomation.com -- Respectfully, Nicholas Leippe Sales Team Automation, LLC 1335 West 1650 North, Suite C Springville, UT 84663 +1 801.853.4090 http://www.salesteamautomation.com /* PLUG: http://plug.org, #utah on irc.freenode.net Unsubscribe: http://plug.org/mailman/options/plug Don't fear the penguin. */
