Date: Fri, 24 Feb 2012 13:18:28 -0600 From: "Edwin L. Culp W." <edwinlculp@gmail.com> To: Peter Maloney <peter.maloney@brockmann-consult.de> Cc: freebsd-stable@freebsd.org Subject: Re: The "New BSD Installer" thread has shown me that I am totally obsolete in disk partitioning. Message-ID: <CALFgp2PXSxNrs4_dXhZ7qWLXwQCf=E6Tp3q5k2t3CYG2CfmLog@mail.gmail.com> In-Reply-To: <4F425523.9060709@brockmann-consult.de> References: <CALFgp2Op8dhJASYCJ_wYQXFxPyv%2BOMYtj9g0HgyAo2HJ3espzQ@mail.gmail.com> <4F425523.9060709@brockmann-consult.de>
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2012/2/20 Peter Maloney <peter.maloney@brockmann-consult.de> > Am 17.02.2012 21:08, schrieb Edwin L. Culp W.: > > If such a thing exists, I need a howto in mixing and matching all the > > different partitioning options and combinations, pro's and con's, for as > > many modern situations as possible. Any suggestions appreciated. > To create a full document from scratch explaining everything is likely > beyond the capabilites of any individual. If you had more specific > questions or topics, it would help us to help you more efficiently. What > are you looking for? A gpart howto? Mirroring and other types of > devices? mbr vs gpt? Whether or not to have separate partitions for /usr > and /var, etc.? > > And then when you get your answers, submit a PR including the details of > what you expected in the handbook, and what you learned elsewhere that > should be added, and then in the PR, ask them to add what you wrote in > the PR to the handbook. > > Personally, I can tell you a bunch about gpart, zfs, and explain or > elaborate on technical jargon, but I don't know too much about > sysinstall, bsdlabel, UFS, different boot options or FreeBSD software > raid configuration files. All my FreeBSD machines are running pure ZFS, > and I've only created temporary gpart, gstripe, etc. for tests so far. > If I needed to put together a real software raid UFS system, I would > need to look through documentation. > > > I did look at the handbook but it seems to have changed little and uses > > sysinstall for the examples at: > > > > > > > http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/install-steps.html#SYSINSTALL-FDISK2 > > > > Thanks for any suggestions. I apologize for my ignorance. > > > > ed > > > > P.S. I have wanted to understand and try things like the following > comment > > to the thread, but I have no idea where to begin or options for doing > it. > > > > Sorry, I wasnt suggesting that you should always mirror > > the indiviudual partititons - just I happen to do that where > > I am mixing ZFS and gmirror. Obviosuly you dont want to > create > > lots of little mirrors if you dont have to. But even with > > one mirror, you can mirror a big partiton covering the whole > > drive, and then carve that up with bsdlabel. No need to ever > > mirror > > the actual raw discs, and it works with GPT. > > I think he means something like this, but I don't know how to use > bsdlabel, so here is gpart (one of the new things you should learn > anyway). And also I don't know if the result of my code below would even > boot, which bootcode to use, or what to put in /boot/loader.conf to make > it boot. > > # create a gpt table (rather than MBR) > gpart create -s gpt da0 > #(not sure... boot loader needed outside the mirror?) > gpart add -s 64k -l boot1 -t freebsd-boot da0 > # add a slice for your mirror (aka. partition). > # from quote: "But even with one mirror," > gpart add -s 80g -l mirrorslice1 -t mbr da0 > > # set up the second disk > gpart create -s gpt da1 > #(not sure... boot loader needed outside the mirror?) > gpart add -s 64k -l boot2 -t freebsd-boot da1 > # from quote: "you can mirror *a big partiton* covering the whole drive" > gpart add -s 80g -l mirrorslice2 -t mbr da1 > > # Not sure if "mbr" is the right choice for the type above... I also > tried guessing "gpt" which didn't work and is not in the manual. > > # create the mirror device (I don't know the proper way to do this... I > just tried this and don't know if it persists on boot, etc.) > # from quote: "*you can mirror* a big partiton covering the whole drive" > gmirror load > gmirror label mymirror gpt/mirrorslice1 gpt/mirrorslice2 > > # slice the mirror device as if it was a regular disk > # from quote: "and then carve that up with bsdlabel" (but I used gpart > instead of bsdlabel) > gpart create -s gpt gmirror/mymirror > gpart add -s 1g -l root -t freebsd-ufs gmirror/mymirror > gpart add -s 1g -l usr -t freebsd-ufs gmirror/mymirror > > newfs gpt/root > newfs gpt/usr > > > > Further explanation of other things he said not involved in the above: > > "wasn't suggesting that you should always mirror the individual > partititons" > gpart create -s gpt da0 > gpart create -s gpt da1 > gpart add -s 1g -l root1 -t freebsd-ufs da0 > gpart add -s 1g -l root2 -t freebsd-ufs da1 > gpart add -s 1g -l usr1 -t freebsd-ufs da0 > gpart add -s 1g -l usr2 -t freebsd-ufs da1 > ... > gmirror label rootmirror gpt/root1 gpt/root2 > gmirror label mymirror gpt/usr1 gpt/usr2 > ... > > #and an example of what he said you don't need to do: > # from quote: "No need to ever mirror actual raw discs" > gmirror label mymirror da0 da1 > > raw disk = da0 > > gpt slice/partition = da0p1 where 1 is the index seen in "gpart show" > or > gpt slice/partition = gpt/root1 where root1 is the label seen in "gpart > show -l" and set in "gpart add ... -l labelhere" > > mirror device = mirror/mymirror > > etc. > > Be sure to align properly. I didn't do any aligning above. Use the "-a > ..." option. Units in gpart are sectors unless you specify another, and > sizes are in base-2 (eg. "-s 5g" would be a size of 5 GiB not 5GB) > > And you would also need a boot slice separate from the mirror unless the > bootloader understands the mirror, and install the bootloader on both > disks. I don't know if it does support this, or if it will work at all > this way. You need to find this out somewhere other than from me. > > I will try several options and configurations on the new machine and will > hopefully learn to send my results in a howto type format for raw beginners > in all the new options. The most confusing part for me, now, is how to mix > and match the options for better results. > Thanks so much for your reply. ed > > > _______________________________________________ > > freebsd-stable@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org > " > > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" >
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