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$ rhc --version rhc 1.14.7 Description of problem: "rhc" allows taking snapshots of an application like so: $ rhc snapshot save -a myapp During snapshot-taking time, the application will go offline. Someone visiting the application with a web browser will see the following message ------------BEGIN QUOTE----------------- Service Temporarily Unavailable The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later. Apache/2.2.15 (Red Hat) Server at myapp-myaccount.rhcloud.com Port 80 ------------END QUOTE----------------- This behavior makes my application inaccessible for a significant time (snapshot-taking and restarting the app takes around 10 minutes in my case). Besides periodic backups, I use the "rhc snapshot" functionality whenever I migrate my application to a new gear. Therefore, I'd be great if "rhc snapshot save" could somehow take an application snapshot without letting the server go down.
The application is shutdown during snapshots and restores to ensure the application is a a known state. Since you have ssh access to the gears making up the application you could use rsync or scp to do an live-backup. Knowing that any active databases or data stores could be corrupt during the restore.