Date: Mon, 13 Sep 2004 01:01:21 +0400 From: Nikita Danilov <nikita@clusterfs.com> To: Igor Shmukler <shmukler@mail.ru> Cc: Morten Liebach <m@mongers.org> Subject: Re: FreeBSD on Xserve? Message-ID: <16708.47393.249768.90818@thebsh.namesys.com> In-Reply-To: <E1C6aQi-000KyU-00.shmukler-mail-ru@f26.mail.ru> References: <20040912183437.GF20097@mongers.org> <E1C6aQi-000KyU-00.shmukler-mail-ru@f26.mail.ru>
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Igor Shmukler writes: > > > If original author wants to mature OS with MAC and SMP support SELinux > > > might be a good candidate. > > > However, Linux does not have jails. Only other OS that has them is > > > Solaris 10 which does not run on PPC. > > > > There's something named User Mode Linux which seems to be a little like > > jails. I haven't got the faintest idea how well it works. > > I could be wrong, but AFAIK UML is not same thing as jail. AFAIK, UML > has a serious performance penalty. It used to work pretty well for > 2.4.x kernels. However, there are associated issues with keeping UML > up to date. I don't think UML ever made it into mainline. Jail is > part of kernel. UML (User Mode Linux, user-mode-linux.sf.net) is a port of Linux kernel to Linux used as an underlying platform. UML kernel is built as a normal user-level executable, that is run on a "host" machine, providing "guest" Linux instance. You can log into guest, run processes there, attach debugger to it, etc. It's more like vmware than jail. UML is a part of 2.6 mainline. Nikita.
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