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Date: Tue, 10 Mar 2009 18:35:59 -0700
From: Tim Kientzle <kientzle@freebsd.org>
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References: <200903100104.53847.ken__6247.10998167775$1236647281$gmane$org@mthelicon.com>	<86mybuasss.fsf@gmail.com>	<200903101238.20974.paul@fletchermoorland.co.uk>
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Cc: freebsd-current@freebsd.org, Pegasus Mc Cleaft <ken@mthelicon.com>,
	Paul Wootton <paul@fletchermoorland.co.uk>
Subject: Re: bsdtar lockup on Current-03/10/2009
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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?

Please try this, which will poke that same system
call in a different way:

  rm -f foo foolink
  touch foo
  ln -s foo foolink
  lsextattr -h user foolink
  lsextattr -h user foo
  setextattr user test test foo
  lsextattr -h user foolink
  lsextattr -h user foo
  setextattr user test test foolink
  lsextattr -h user foolink

I'm especially curious about the processor and
filesystem you're using when you see these problems.

Cheers,

Tim