linux-kernel - Re: Linux 3.11-rc2

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Message-ID: <20130723010437.GA570@polaris.bitmath.org>
Date:	Tue, 23 Jul 2013 03:04:37 +0200
From:	rydberg@...omail.se
To:	Trond Myklebust <Trond.Myklebust@...app.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Linux 3.11-rc2

Hi Trond, Linus,

On Sun, Jul 21, 2013 at 12:53:10PM -0700, Linus Torvalds wrote:
> So it's been another week, and -rc2 is out there.

This one happens to break nfs in a rather blunt-instrument fashion -
creating files on a nfs4 partition [1] no longer works. Bisection
yields this commit as the culprit:

commit b4a2cf76ab7c08628c62b2062dacefa496b59dfd
Author: Trond Myklebust <Trond.Myklebust@...app.com>
Date:   Wed Jul 17 16:43:16 2013 -0400

    NFSv4: Fix a regression against the FreeBSD server
    
    Technically, the Linux client is allowed by the NFSv4 spec to send
    3 word bitmaps as part of an OPEN request. However, this causes the
    current FreeBSD server to return NFS4ERR_ATTRNOTSUPP errors.
    
    Fix the regression by making the Linux client use a 2 word bitmap unless
    doing NFSv4.2 with labeled NFS.
    
    Signed-off-by: Trond Myklebust <Trond.Myklebust@...app.com>

Reverting the patch returns things to normal.

Thanks,
Henrik

[1] type nfs4 (rw,relatime,vers=4.0,rsize=262144,wsize=262144,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=192.168.0.10,local_lock=none,addr=192.168.0.142)
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