Btrfs for Rawhide users?

Posted Nov 22, 2009 16:47 UTC (Sun) by anton (subscriber, #25547)
In reply to: Btrfs for Rawhide users? by jimparis
Parent article: Btrfs for Rawhide users?

Yes, for most applications you will probably have to shut them down before switching a file system from one snapshot to another one. You usually don't have to do that when you do a snapshot, because (if Btrfs gets it right) the snapshot will represent some state that logically existed during the execution of the application. When you recover from that snapshot, it's as if the application was killed or crashed by itself at that point, and the application should be able to recover from that. For upgrades the package management system and the scripts for the application package tend to perform whatever shutdowns and restarts are necessary for the particular package (at least that's my experience in Debian, don't know about Fedora).

Of course, only covering one file system can pose a consistency problem if the application distributes its data across several file systems. It would be cool if one could snapshot all file systems at the same (logical) time.