Date: Thu, 18 Dec 2014 08:29:03 -0700 From: Alan Somers <asomers@freebsd.org> To: "Russell L. Carter" <rcarter@pinyon.org> Cc: FreeBSD Net <freebsd-net@freebsd.org> Subject: Re: compiling on nfs directories Message-ID: <CAOtMX2gG4CA%2BFhDPcDb7b7vko6e_0mdjnXz7UBFF85TT2tWunw@mail.gmail.com> In-Reply-To: <549233E2.7050009@pinyon.org> References: <1480362493.14973677.1418857654052.JavaMail.root@uoguelph.ca> <54922412.6090903@pinyon.org> <54922E49.4050906@egr.msu.edu> <549233E2.7050009@pinyon.org>
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On Wed, Dec 17, 2014 at 6:54 PM, Russell L. Carter <rcarter@pinyon.org> wrote: > > > On 12/17/14 18:30, Adam McDougall wrote: >> >> On 12/17/2014 19:47, Russell L. Carter wrote: >>> >>> >>> >>> On 12/17/14 16:07, Rick Macklem wrote: >> >> >>>> If this is using an exported ZFS volume, it would be nice if you >>>> could do the same test using an exported UFS file system, to see if >>>> this is ZFS related. >>> >>> >>> It is indeed using exported ZFS filesystems, but unfortunately I have >>> no USF filesystems available to test. >>> >>> Russell >> >> >> Can you create a zvol, newfs it with ufs and export it? > > > Maybe. I would love to help if I can, w/o disrupting my existing > carefully planned physical disk layouts. I'm a zfs novice here, do I > need free space unallocated to existing zpools, or can I shrink an > existing pool? (assuming that zfs can transmute lead into gold, with > the right incantations). I have plenty of "free" space allocated to > existing pools that span my physical drives. > > If I have to add a physical drive (that's possible, but it will be a > slow drive sitting on my shelf) then I need to wait until I get back > from holiday travels. You don't need to screw with your pools at all. A zvol is like a managed like a ZFS filesystem, except it's a block device. You can create one and mount it with a command like this: zfs create -V 8g mypool/myvol newfs [options] /dev/mypool/myvol mount /dev/mypool/myvol /mnt -Alan
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