Date: Sun, 29 Jul 2018 15:01:06 -0600 From: Warner Losh <imp@bsdimp.com> To: David Cross <dcrosstech@gmail.com> Cc: FreeBSD Hackers <freebsd-hackers@freebsd.org> Subject: Re: Request for comments, new geom part type alias: freebsd-geom Message-ID: <CANCZdfqMQ=itMty34gQ3aS9B0Xzp5xgU6RSpcp=oA26UsJ__=A@mail.gmail.com> In-Reply-To: <CAM9edePaxdNazqBNC%2B=iKjApr1CrDr%2BZUn1OEj65vr6Z17btRg@mail.gmail.com> References: <CAM9edePaxdNazqBNC%2B=iKjApr1CrDr%2BZUn1OEj65vr6Z17btRg@mail.gmail.com>
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Why '-geom'? Why not 'freebsd-misc'? And what, exactly, do you mean by 'create a GPT partition'? Warner On Sun, Jul 29, 2018 at 2:49 PM, David Cross <dcrosstech@gmail.com> wrote: > I'd like to propose that we create a GPT partition for geom labeled > partitions (gmirror, gstripe, geli, etc.. anything that can be 'tasted' and > automatically determined.) called 'freebsd-geom'. > > There are numerous cases where you shouldn't have a raw geom on a disk (for > example, imagine a raid 10 of a filesystem with VMs on it..on a raw disk > its possible that the lead block happens to line up with a VM disk image or > anything else a BIOS may determine is bootable). > > So the question becomes which part id to use; IF its a mirror of a swap of > UFS it seems perfectly reasonable to use freebsd-swap or freebsd-ufs (if a > bit dangerous). If its a mirror or a geli then you can again be in the > situation where the boot blocks (or something else), in certain > circumstances mistakes these for raw filesystems with similarly calamitous > results. > > Given these, it seems a 'freebsd-geom' (or similar) seems entirely > appropriate; we can mark these for what they really are, and eliminate > these cases where the system misinterprets intentions based on ambiguous > data. > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org" >
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