compiling on nfs directories

[Russell L. Carter]

On 12/18/14 08:37, Adam Vande More wrote:
> On Thu, Dec 18, 2014 at 9:29 AM, Alan Somers <asomers at freebsd.org> wrote:
>>
>> On Wed, Dec 17, 2014 at 6:54 PM, Russell L. Carter <rcarter at 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
>
>
> Using a flash drive or temporary drive seems like a much more comprehensive
> test as you can fully eliminate ZFS from the picture.  Which is the point
> of the exercise.
>

Ok, good suggestions, noted, and thanks!  Unfortunately I'm going
to have to pick this up when I get back.

Russell