NFS on ZFS

[Kip Macy]

The flags checks are too strict. File a PR. I'll fix it when I get to
it. Sorrry.


-Kip

On Wed, May 27, 2009 at 7:24 PM, Mike Andrews <mandrews at bit0.com> wrote:
> On Tue, 26 May 2009, Mike Andrews wrote:
>
>> Takahashi Yoshihiro wrote:
>>>
>>> Today's stable has a problem creating a new file via NFS on ZFS.
>>>
>>> On the NFS server, there is no problem.
>>>
>>> % cd /ZFS
>>> % mktemp hoge
>>> hoge
>>> % ls -l hoge
>>> -rw-------  1 nyan  nyan  0  5 26 19:09 hoge
>>>
>>>
>>> But it's a problem on the NFS client.
>>>
>>> # mount server:/ZFS /ZFS
>>> % cd /ZFS
>>> % mktemp hoge
>>> mktemp: mkstemp failed on hoge: Input/output error
>>> % ls -l hoge
>>> ----------  1 nyan  wheel  0  5 26 19:09 hoge
>>>
>>> The file has a wrong permission.
>>>
>>> This problem is only on stable, current has no problem.
>>
>> I'm seeing this too.  It seems so far to be limited to mkstemp() -- just
>> copying files normally works.  For example /usr/bin/install -S fails,
>> without -S works, if the target is an NFS+ZFS volume.
>
> Anyone?
>
> I've verified that if the NFS server uses UFS2, mkstemp() from an NFS
> client to the server works fine, but if the NFS server uses ZFS, the NFS
> server returns EIO after creating a file with 000 permissions.
>
> In addition to breaking /usr/bin/install -S, it also breaks rsync over NFS.
>
> I don't yet know if it matters whether the on-disk format is ZFS v6 vs v13.
>
>



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