[oi-dev] New BE every package update?

Andrew Gabriel illumos at cucumber.demon.co.uk
Sun Apr 15 20:27:43 UTC 2012

Milan Jurik wrote:
> Hi,
> is it expected with the latest prestable that new backup BE is created
> even if minor binary is updated?


That's how it works in Solaris 11, certainly.

If the update will be straight into the running system, then the new BE 
is a snapshot before the update is applied.

If the update will be into a new boot environment (requiring a reboot to 
activate), then the backup is the current boot environment which is 
unchanged by the update.

Either way, you get a 'before' and an 'after' BE.

> I was expecting "BE snapshots" through ZFS snapshots as it was. Not new BE.

How would you boot back to a ZFS snapshot if your update trashed the 
current BE?
That's exactly what a BE is for (and it's little more than a ZFS 
snapshot anyway).


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