kern/135412: [zfs] [nfs] zfs(v13)+nfs and open(..., O_WRONLY|O_CREAT|O_EXCL, ...)

Andriy Gapon avg at
Tue Jun 30 14:25:13 UTC 2009

on 30/06/2009 16:00 Rick Romero said the following:
> Quoting "Danny Braniss" <danny at>:
>> hi,
>>     This pr is realy holding me back, I can't upgrade this server, and
>> telling serveral tens of users to us cp, etc is not an option. The open
>> works fine if not using O_EXCL.
>> Thanks,
>>     danny
> This affects procmail deliveries as well.   Any chance of having this
> looked at asap? So I'm on zfs 13, I can't drop back zfs versions, and my
> production data is stuck.  Yes, I know this isn't a release kernel, but
> I was having ungodly slowness with ZFS and was trying everything I could
> think of.  I had, due daily to archiving, 50-100thousand 3k files in
> each of about 200 directories. Once I moved them all to another machine
> (on UFS), the ZFS partition returned to normal speeds...But now I'm
> stuck with this delivery issue (fortunately it's only procmail) due to
> the upgrade attempt.  I just ran into the 'mv' problem yesterday.
> Any relief in sight?

Are you sure that you have the latest on-disk formats?
I have submitted a followup to the PR, please respond there with relevant
information about your system.

Andriy Gapon

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