Date: Sun, 11 Sep 2011 05:46:01 +0900 (JST) From: Hiroki Sato <hrs@FreeBSD.org> To: pjd@FreeBSD.org, mm@FreeBSD.org, freebsd-stable@FreeBSD.org Cc: attilio@FreeBSD.org, kib@FreeBSD.org Subject: Re: ZFS panic on a RELENG_8 NFS server Message-ID: <20110911.054601.1424617155148336027.hrs@allbsd.org> In-Reply-To: <20110910.044841.232160047547388224.hrs@allbsd.org> References: <CAJ-FndAChGndC=LkZNi7i6mOt%2BSpw3-OftO9rH0%2B5WNnVWzuBw@mail.gmail.com> <20110907.094717.2272609566853905102.hrs@allbsd.org> <20110910.044841.232160047547388224.hrs@allbsd.org>
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----Security_Multipart(Sun_Sep_11_05_46_01_2011_447)-- Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Hiroki Sato <hrs@freebsd.org> wrote in <20110910.044841.232160047547388224.hrs@allbsd.org>: hr> Hiroki Sato <hrs@freebsd.org> wrote hr> in <20110907.094717.2272609566853905102.hrs@allbsd.org>: hr> hr> hr> During this investigation an disk has to be replaced and resilvering hr> hr> it is now in progress. A deadlock and a forced reboot after that hr> hr> make recovering of the zfs datasets take a long time (for committing hr> hr> logs, I think), so I will try to reproduce the deadlock and get a hr> hr> core dump after it finished. hr> hr> I think I could reproduce the symptoms. I have no idea about if hr> these are exactly the same as occurred on my box before because the hr> kernel was replaced with one with some debugging options, but these hr> are reproducible at least. hr> hr> There are two symptoms. One is a panic. A DDB output when the panic hr> occurred is the following: I am trying vfs.lookup_shared=0 and seeing how it goes. It seems the box can endure a high load which quickly caused these symptoms. -- Hiroki ----Security_Multipart(Sun_Sep_11_05_46_01_2011_447)-- Content-Type: application/pgp-signature Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (FreeBSD) iEYEABECAAYFAk5rzIkACgkQTyzT2CeTzy0qawCgqgbT/OfkbyC89k82JlakipOz RHoAnA17gfukuS58aMXY+G6pAcQAwC9s =3f+I -----END PGP SIGNATURE----- ----Security_Multipart(Sun_Sep_11_05_46_01_2011_447)----
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