From owner-freebsd-fs@FreeBSD.ORG Wed Sep 24 01:53:29 2014 Return-Path: Delivered-To: freebsd-fs@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id B02A1443 for ; Wed, 24 Sep 2014 01:53:29 +0000 (UTC) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:1900:2254:206c::16:87]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 798C0A28 for ; Wed, 24 Sep 2014 01:53:29 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.9/8.14.9) with ESMTP id s8O1rThM019269 for ; Wed, 24 Sep 2014 01:53:29 GMT (envelope-from bdrewery@freefall.freebsd.org) Received: (from bdrewery@localhost) by freefall.freebsd.org (8.14.9/8.14.9/Submit) id s8O1rTWT019268 for freebsd-fs@FreeBSD.org; Wed, 24 Sep 2014 01:53:29 GMT (envelope-from bdrewery) Received: (qmail 67545 invoked from network); 23 Sep 2014 20:53:25 -0500 Received: from unknown (HELO ?10.10.0.24?) (freebsd@shatow.net@10.10.0.24) by sweb.xzibition.com with ESMTPA; 23 Sep 2014 20:53:25 -0500 Message-ID: <5422240F.4080003@FreeBSD.org> Date: Tue, 23 Sep 2014 20:53:19 -0500 From: Bryan Drewery Organization: FreeBSD User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.1.1 MIME-Version: 1.0 To: Konstantin Belousov Subject: Re: Deadlock with umount -f involving tmpfs on top of ZFS on r271170 References: <5420D5FC.4030600@FreeBSD.org> <20140923131244.GC8870@kib.kiev.ua> In-Reply-To: <20140923131244.GC8870@kib.kiev.ua> OpenPGP: id=6E4697CF; url=http://www.shatow.net/bryan/bryan2.asc Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="6Pp002pEspcDm8b2dMRaurCDNkosnUEng" Cc: FreeBSD FS X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 24 Sep 2014 01:53:29 -0000 This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --6Pp002pEspcDm8b2dMRaurCDNkosnUEng Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable On 9/23/2014 8:12 AM, Konstantin Belousov wrote: > On Mon, Sep 22, 2014 at 09:07:56PM -0500, Bryan Drewery wrote: [...] > There is indeed some write op in flight on the tmpfs mount, which > blocks unmount suspension. The 'bt all' from ddb would give some > overview of the threads states. >=20 > Follow > https://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/k= erneldebug-deadlocks.html > to gather required information. >=20 I tried your patch and still ran into the deadlock. Here is the debug information: https://people.freebsd.org/~bdrewery/vfs_deadlock.2.txt --=20 Regards, Bryan Drewery --6Pp002pEspcDm8b2dMRaurCDNkosnUEng Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (MingW32) iQEcBAEBAgAGBQJUIiQPAAoJEDXXcbtuRpfPh7YH/jiK15pFgZ6JO4HRQjvUOvZA qGJoIDcRHyE3dONvuXG87fuEpmX91NjQkgwhhFryyVUvX7Zvh6l9KsHFkHvTK7If 5IMCS0CV+jFOsS0LIR6+AL9m5gkpioaBiu1gVcOXCW99xPBlfhT501PULmkciAl3 PGB4fvCMeGvCKSFJybiJIMVnVMe1KoEs5ebskl8ixof/kPvAcvikBqEHkf+UC9VG pcMyodZ7dmMDGDHlbZeikEoGwbpQwvQLVwe/AB+s62ZqBt0qw2asz1LS8vgTC0j7 kvBglUNVcRac68CwoLqp8DZsNdolC89aljUiXexmkwEfPtT4vi096+LOSER8PYY= =C0Wq -----END PGP SIGNATURE----- --6Pp002pEspcDm8b2dMRaurCDNkosnUEng--