Date: Tue, 20 Jan 2009 20:40:55 -0600 (CST) From: Wes Morgan <morganw@chemikals.org> To: John Hendy <jw.hendy@gmail.com> Cc: freebsd-fs@freebsd.org, Boris Kotzev <boris.kotzev@gmail.com> Subject: Re: OS X/FreeBSD shared zfs partition Message-ID: <alpine.BSF.2.00.0901202032510.10971@ibyngvyr.purzvxnyf.bet> In-Reply-To: <a037f7360901201608p5f36bc1bu49bb4773c07e350f@mail.gmail.com> References: <200901202101.27544.boris.kotzev@gmail.com> <a037f7360901201608p5f36bc1bu49bb4773c07e350f@mail.gmail.com>
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On Tue, 20 Jan 2009, John Hendy wrote: > Wow... I really didn't expect that to work! Well, it 'kind of worked'. > Here's what I got: > > I did 'zpool import' and got the usual 'ZFS is experimental in FreeBSD, ZFS > filesystem version 6' and it said something like 'you can import pools by > name' (sorry - i missed the exact message). Then I did 'zfs lilst' and tank > was listed, but not tank/jwhendy. That version "6" is the pool format. The actual filesystem on-disk versions are different. In -current, the pool version is 13 and filesystem version is 3, according to both "zpool upgrade" and "zfs upgrade". Sounds like the zfs code in OS X is more recent than that in -stable. > Then I did 'zfs mount tank/jwhendy' and got: > > 'Mismatched versions: Filesystem is version 2 on-disk format, which is > incompatible with this software version 1! You can force mounting with -f' > > I did 'zfs mount -f tank/jwhendy' and it said 'Cannot mount 'tank/jwhendy': > Operation not supported', but zfs list shows: Yeah I wouldn't advice doing that, no telling what will happen. zfs list will show you filesystem status regardless of mount status, it's just reading the pool data I imagine. > > NAME USED AVAIL REFER MOUNTPOINT > tank 11.4G 27.2G 390K /tank > tank/jwhendy 11.4G 27.2G 11.4G /tank/jwhendy > > So... it appears it mounted? when I cd /tank/jwhendy, though, all that is in > the folder is a file called .autodiskmounted, which I assume is used by OS > X. > > I think we've made some progress... any way to go the whole way? Can I > upgrade the zfs version in FreeBSD since it complains about the mismatched > software versions? Just a thought. > > > > Thanks! > John > > On Tue, Jan 20, 2009 at 1:01 PM, Boris Kotzev <boris.kotzev@gmail.com>wrote: > >>> Hi, >>> >>> I dual boot OS X and FreeBSD (currently 7.0-i386) and have wanted to >> share a >>> partition for storage between the two. I looked into getting HFS+ to work >> on >>> FreeBSD (http://forums.freebsd.org/showthread.php?t=1198)<; >> http://forums.freebsd.org/showthread.php?t=1198>; >>> but >>> did not succeed. Then I ran across these two pages: >>> >>> - http://blog.igorminar.com/2009/01/using-zfs-with-mac-os-x-105.html >>> - http://zfs.macosforge.org/trac/wiki >>> >>> I used them to successfully change my Users folder in OS X to a zfs >>> filesystem on a partition separate from my main OS X system/boot files. >> Now >>> I just want to mount that partition from FreeBSD. Is this possible? I can >>> see the slice in /dev as ad5s3, but there's no partitions on that slice >> to >>> mount (ad5s3a, for example), nor am I familiar enough with ZFS to know >> what >>> it should look like from FreeBSD. I have tried 'mount -t zfs /dev/ad5s3 >>> /media/temp' without success. zfs.ko is loaded (seen in kldstat) and >> gives >>> the usual message of it being experimental and being version 6.0. In a >> post >>> on the forums (http://forums.freebsd.org/showthread.php?t=1613) it was >>> suggested that I try 'zpool list' but that returned 'no pools available'. >> I >>> tried 'zfs list' as well and got 'no datasets available'. >>> >>> My GUID partition table (OS X) and MBR (FreeBSD) are synced, so they both >>> show disk0s3 (OS X)/partition 3 as type Solaris (It's 'Solaris Usr' on >> the >>> GPT and type B4 iirc on the MBR). I used an EFI booting program called >> rEFIt >>> to sync the tables - could the MBR type of the slice be the reason I >> can't >>> mount it from FreeBSD? >>> >>> I've searched long and hard for any posts about using zfs as a way to >> share >>> a partition between any two OSs, but have not found any references on how >> to >>> use a zfs slice as a shared data partition. Can it only be mounted from >> the >>> OS in which it was created? Any thoughts on what I might do here? >>> >>> >>> Thanks much, >>> John >> >> I am sorry, I wanted to ask what >> >> zpool import >> >> returns. >> >> Regards, >> >> Boris Kotzev
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