Date: Mon, 27 Apr 2009 20:59:11 +0000 (UTC) From: "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net> To: Miroslav Lachman <000.fbsd@quip.cz> Cc: freebsd-jail@freebsd.org Subject: Re: changing cpuset of jail from inside of jail - is it feature? Message-ID: <20090427205719.T15361@maildrop.int.zabbadoz.net> In-Reply-To: <49F0F81F.8050503@quip.cz> References: <49EE4B6B.5020005@quip.cz> <20090422094447.A15361@maildrop.int.zabbadoz.net> <49EEF5DB.4030408@quip.cz> <20090423141908.T15361@maildrop.int.zabbadoz.net> <49F0F81F.8050503@quip.cz>
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On Fri, 24 Apr 2009, Miroslav Lachman wrote: > Bjoern A. Zeeb wrote: > > [...] > >> Ok, I am not sure what is going wrong here; well I know but I don't >> know if it's intended in cpuset. Trying to talk to the right people >> but they seen to be AWOL atm. >> >> >> If you are brave, you could try: >> >> http://people.freebsd.org/~bz/20090423-01-cpuset-jails.diff >> >> I haven't even compiled it yet. It may work, it may not work, it may >> make your machine panicing, ... just to warn you. >> >> it should still allow you to create further sets within a jail but you >> should not be able to change the "root set" of the jail from inside >> the jail anymore (in case it works;) > > I did just a quick test. (OK, not so quick, because compilation inside Qemu > on my old PC takes 2 hours ;]) > It compiles without problems and did what I expect: > ... > I have no real multicore machine to test it more deeply. (can't test it on > production servers and spare machine is blocked by another task) > > Will this fix be included in 7.2-RELEASE or is it too late to commit this > fix? FreeBSD 7/7.2 just got a BUGS entry for the man pages. The patch will not make it; it's still waiting review for HEAD and possibly discussion if a super user inside a jail would still be allowed to further restrict the cpuset (but not extend it). /bz -- Bjoern A. Zeeb The greatest risk is not taking one.
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