Date: Sat, 23 Apr 2011 16:40:21 -0400 From: "illoai@gmail.com" <illoai@gmail.com> To: Chris Telting <christopher-ml@telting.org> Cc: freebsd-questions@freebsd.org Subject: Re: zfs partition for /etc? Message-ID: <BANLkTik2N0DTL-Eo4HC0EB_%2BvEy=eBcGLw@mail.gmail.com> In-Reply-To: <4DB30596.3030609@telting.org> References: <4DB30596.3030609@telting.org>
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On 23 April 2011 13:00, Chris Telting <christopher-ml@telting.org> wrote: > I'm using PC-BSD and ZFS. ZFS is outstanding. Somewhat less impressed with > PCBSD. . . . > So so on to my question. I'm sure others have thought about this. I kind > of want /etc to be it's own zfs partition so that I can snapshot it separate > from everything else and preserve it without much effort. But I don't think > I can do that because of booting. The system depends on /etc before it > mounts it's first file system. Same issue I experienced a couple years back > when I tried to do unionfs on /etc. Is it possible to mount multiple > partitions from the kernel read only for single user mode and bootup? I > almost feel like there should be an fstab for /boot just to be able to do > something like this. > > I want to be able to snapshot and rollback my base system in seconds. Since > I use separate volumes for /usr and /var I'll accept using a script. My > only thought is to generate and archive diffs for /etc though another > modular script to match snapshot labels. I'm not sure why /etc applies any differently than rolling back or snapshotting all of /, of course I don't know anything about your installation, but /etc might run to 1.3M on a really bad day. I also don't change /etc but rarely, maybe once a year, outside of occasionally fiddling allscreens_flags in /etc/rc.conf. The pain and potential for breakage seems hardly worth the benefits, to me. (as an aside, I think most of the configuration business in /boot , specifically loader.conf, could simply be moved to /etc, but it's not a problem I'd bother to fix. It's an order of magnitude less irritating than the spaghetti in most any linux machine's /etc q.v.) -- --help
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