ZFS Boot Environments für FreeBSD

[laemodost]

Vermaden hat ein tolles Skript geschrieben, mit dem ZFS Boot Environments für FreeBSD möglich sind:

https://sourceforge.net/projects/beadm/

Ein ausführliches Howto hat er in den FreeBSD Forums veröffentlicht:

https://forums.freebsd.org/showthread.php?t=31662

Dazu gibt er ein paar Anwendungsbeispiele:

The main purpose of the Boot Environments concept is to make all risky tasks harmless, to provide an easy way back from possible troubles. Think about upgrading the system to newer version, an update of 30+ installed packages to latest versions, testing software or various solutions before taking the final decision, and much more. All these tasks are now harmless thanks to the Boot Environments, but this is just the tip of the iceberg.

You can now move desired boot environment to other machine, physical or virtual and check how it will behave there, check hardware support on the other hardware for example or make a painless hardware upgrade. You may also clone Your desired boot environment and ... start it as a Jail for some more experiments or move Your old physical server install into FreeBSD Jail because its not that heavily used anymore but it still have to be available.

Other good example may be just created server on Your laptop inside VirtualBox virtual machine. After you finish the creation process and tests, You may move this boot environment to the real server and put it into production. Or even move it into VMware ESX/vSphere virtual machine and use it there.

As You see the possibilities with Boot Environments are unlimited.