On Wed, Aug 26, 2009 at 11:35 PM, Erich Dollansky<er...@apsara.com.sg> wrote: > Hi, > > On 27 August 2009 am 11:10:37 Adam Vande More wrote: >> On Wed, Aug 26, 2009 at 9:59 PM, APseudoUtopia > <apseudouto...@gmail.com>wrote: >> > >> > Also, how memory-intensive is a jail? >> >> Very light when compared to other virtualization methods. > > jails share the kernel but not the world. > > So, there will be only one kernel loaded but all libraries in use > will be loaded individually by each jail when needed. > > Jails need some more disk space as the world, all libraries needed > and all applications needed are installed individually in each > jail. > > This can be minimised with proper planning of what runs it what > jail. > > Erich >
Thanks for the helpful replies. I have a couple of questions: When a jail is compromised, the only thing I have to do to recover the system is delete the jail and create a new one, correct? The host system is untouched even if a jail is compromised? And how does the upgrade process work? I know the userland must be the same for the host system and the jail. If I want to upgrade to, say, FreeBSD 8 when released, what is the process? I'd imagine it goes something like this, but I'm not sure: -Shut down jail -Upgrade host system -Install host binaries -Install jail binaries -Restart jail Or is there more to the process than what it seems? Thanks again. _______________________________________________ email@example.com mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"