Date: Sun, 27 Jul 2003 14:04:32 -0300 (ADT) From: The Hermit Hacker <scrappy@hub.org> To: User KATRINA <katrina@firewire.nightrealmstudios.com> Cc: freebsd-questions@freebsd.org Subject: Re: Sharing among jails Message-ID: <20030727140413.V81611@hub.org> In-Reply-To: <20030726235431.U441@firewire.nightrealmstudios.com> References: <20030726112605.E439@firewire.nightrealmstudios.com> <20030726194123.GA23196@Amber.XtremeDev.com> <20030727015915.F81611@hub.org> <20030726235431.U441@firewire.nightrealmstudios.com>
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Nope, I just used the man pages for stuff like this ... On Sat, 26 Jul 2003, User KATRINA wrote: > Do you have any URL's with info on UNIONfs (setting up, etc.) - I'll look > into this and NFS - Thank you! > > > On Sun, 27 Jul 2003, The Hermit Hacker wrote: > > > On Sat, 26 Jul 2003, BSD wrote: > > > > > IMHO, the best way would be to use mount_union or mount_null (I still > > > can't figure out what's the difference between them...) of the ports > > > directory. However, that said, I tried that myself about a year back, > > > and accesses in the jail caused my FreeBSD machine to lock up solid. So > > > I guess the warnings in the BUGS section of the mount_union and > > > mount_null man pages are still in full effect. > > > > *Alot* has changed in a year ... I use UNIONFS to share between 60 jails > > on one server right now, and the server has been purring *knock on wood* > > > > up 19+08:28, 0 users, load 10.66, 11.52, 10.17 > > > > As for the difference between UNION and NULL ... and someone more > > knowledge will hopefully correct me, but based on my experience ... > > > > If you UNIONfs a file system over top of another, you can use NULLfs to > > "seperate" the two ... as an example, if you UNIONFS /usr/ports under > > /jail/usr/ports and do a du of /jail/usr/ports, you will get everything > > ... if you NULLFS mount /jail/usr/ports to /null/usr/ports, and do > > /null/usr/ports, you will get only those files that are *on* > > /jail/usr/ports ... > > > > Basically, NULLFS gives the same result as if you unmounted the UNIONFS > > and looked at /jail/usr/ports ... > > > > > > _______________________________________________ > > freebsd-questions@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" > > > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" > Marc G. Fournier ICQ#7615664 IRC Nick: Scrappy Systems Administrator @ hub.org primary: scrappy@hub.org secondary: scrappy@{freebsd|postgresql}.org
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