kern/135412: ZFS issue

[Gavin Atkinson]

The following reply was made to PR kern/135412; it has been noted by GNATS.

From: Gavin Atkinson <gavin at FreeBSD.org>
To: bug-followup at FreeBSD.org
Cc: Danny Braniss <danny at cs.huji.ac.il>
Subject: Re: kern/135412: ZFS issue
Date: Mon, 22 Jun 2009 14:30:27 +0100

 Other useful information (from PR kern/135039):
 
 This appears to only affect 7-STABLE since the ZFS merge, but doesn't
 affect -HEAD.
 
 After the recent import of ZFS v13 into 7-STABLE, an mkstemp() call from
 an NFS client to a ZFS-backed NFS server will fail: the syscall returns
 EIO and the server will have created a 0-byte file with 000 permissions.
 This breaks not just mktemp but also mv, tar, rsync...
 
 Kip Macy said there's a flags check that is too strict, in email message
 <3c1674c90905280025i17039257l573838d33d8493fd at mail.gmail.com>
 Otherwise, use cp and rm instead of mv, or use scp instead of NFS, or
 use UFS2 on the server
 
 To submitter: did you upgrade your on-disk pools to v13, or is running
 the new code and v6 pools enough to show the problem?  What is the
 output of "zpool upgrade"?