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Date:      Tue, 10 Mar 2009 23:10:32 -0400
From:      John Nielsen <lists@jnielsen.net>
To:        freebsd-current@freebsd.org
Subject:   Re: bsdtar lockup on Current-03/10/2009
Message-ID:  <200903102310.32735.lists@jnielsen.net>
In-Reply-To: <86sklldth2.fsf@gmail.com>
References:  <200903100104.53847.ken__6247.10998167775$1236647281$gmane$org@mthelicon.com> <200903101238.20974.paul@fletchermoorland.co.uk> <86sklldth2.fsf@gmail.com>

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On Tuesday 10 March 2009 04:16:09 pm Anonymous wrote:
> Paul Wootton <paul@fletchermoorland.co.uk> writes:
> > Im also using ZFS and have the same problems as Peg when trying to
> > create a tar file.
> > This is using Current as of last yesterday (09-mar-09).
>
> I'm not sure but in my case ktrace shows extattr_list_link() before the
> lockup. So, for a workaround I disabled extattr support in libarchive.
> Can you verify that this helps you, too?

I today noticed the same problem on -CURRENT i386 built March 9. 
Immediately before my last buildworld (running sources from a couple 
months ago probably) I didn't have any lockups and portupgrade was 
working fine. Now portupgrade-invoked tar put the system into something 
like livelock--tar unresponsive at %100 cpu, kill -9 ineffective, 
sometimes other processes unresponsive, reboot hangs before completing 
and a reset or power-cycle is required. I am using ZFS and initially 
thought that was the source of the regression but I haven't produced the 
lockup with anything but tar and the extattr removal hack seems to have 
fixed it fow now (though I'm sure there's a better fix out there..).

Thanks and let me know if I can provide additional details or testing.

JN




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