Bjoern A. Zeeb wrote:
On Thu, 4 Dec 2008, Dag-Erling Smørgrav wrote:
"Bjoern A. Zeeb" <[EMAIL PROTECTED]> writes:
Jails can have an unrestricted (no duplicate protection, etc.) name
in addition to the hostname. The jail name cannot be changed from
within a jail and is considered to be used for management purposes
or as audit-token in the future.
Is there a specific reason why we allow duplicates?
Yes, so that people have a choice.
You would have to take into account "DYING" jails with possibly
duplicate names anyway.
And it's a purely administrative name (cannot be changed from within
the jail) so it's up to the administrator to have 2 "Customer Webserver"
jails or a "Customer Webserver Tin" and a "Customer Webserver Box".
BTW. in case people wonder how to set it (atm.) from rc.conf, you
can use jail_<name>_flags.
My new (upcoming) jail framework patches also support names, but without
allowing duplicates. This is necessary because jails can be looked up
in the kernel by name as well as by ID. I handle the special case of
"dying" jails, allowing a new jail to duplicate the name of one on the
the way out.
As far as people having a choice, I don't see any more reason to offer
the choice of duplicate jail names than I do in offering duplicate login
names. It just doesn't make sense in the context of what purpose I
expect a name to serve.
- Jamie
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