Date: Mon, 27 Feb 2023 09:39:06 +0100 From: Baptiste Daroussin <bapt@freebsd.org> To: Michael Schuster <michaelsprivate@gmail.com> Cc: FreeBSD Hackers <freebsd-hackers@freebsd.org> Subject: Re: pkg(8): difference between "-c /path" and "-r /path" Message-ID: <20230227083906.foasrirso33jhn4c@aniel.nours.eu> In-Reply-To: <CADqw_g%2BmEuJzUi4=W%2BGGVV%2Ba8S34r5NKHHEJS%2B7TmSMJ5qyzjw@mail.gmail.com> References: <CADqw_gJHaputC4iGX=UkR=3jdGWgAQE2ChN34E8gEPznM=CQXw@mail.gmail.com> <20230227075803.ugvcrasatmtrycnf@aniel.nours.eu> <CADqw_g%2BmEuJzUi4=W%2BGGVV%2Ba8S34r5NKHHEJS%2B7TmSMJ5qyzjw@mail.gmail.com>
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On Mon, Feb 27, 2023 at 09:04:34AM +0100, Michael Schuster wrote: > Guys, > > see inline > > On Mon, Feb 27, 2023 at 8:58 AM Baptiste Daroussin <bapt@freebsd.org> wrote: > > > > On Sun, Feb 26, 2023 at 10:07:14AM +0100, Michael Schuster wrote: > > > Hi, > > > > > > This question is (as of yet) more of the "fill in background info" type: > > > From the "pkg(8)" man-page: > > > > > > -c <chroot path>, --chroot <chroot path> > > > pkg will chroot in the <chroot path> environment. > > > > > > -r <root directory>, --rootdir <root directory> > > > pkg will install all packages within the specified <root > > > directory>. > > > > > > up to now, I've leaned towards "pkg -c /path <cmd>" when > > > installing/updating a BE mounted at /path, but, given some results in the > > > past that weren't quite clear to me (yes, that's a bit vague, sorry), I've > > > been wondering whether "-r /path" would have been better. > > > > > > I'd appreciate thoughts/advice/comments, TIA > > > Michael > > > > pkg -c will chroot (real chroot as in chroot(2)) into the directory at early > > stage and execute everything from the inside. > > > > This means that for post install script the kernel of the host needs to be able > > to run the binary withing the guest (for instance you cannot cross install). > > > > For the packages themselves it is transparent if that is the case. > > > > pkg -r, will run everything from the host and with the provided rootdir prepend > > to all path in the packages and database, post install scripts needs to know > > about PKG_ROOTDIR variable (which is not the case for many of them in the ports > > tree). triggers will be deffered (to be run at next boot). > > > > pkg -r allows cross installation (preparing an arm64 rootdir on a amd64 host). > > > > In long term pkg -r is preferred, right now pkg -c is probably most of the time > > safest. > > my main use case is keeping the current installation (13 Release for > now) up to date and to have a fallback when installing new software; > in that case, if I understand your comments correctly so far, either > should work equally well. > Almost, right now pkg -c should work best as not 100% of the scritps in the ports tree are pkg -r aware. Best regards, Bapt
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