Date: Tue, 23 Sep 2014 20:53:19 -0500 From: Bryan Drewery <bdrewery@FreeBSD.org> To: Konstantin Belousov <kostikbel@gmail.com> Cc: FreeBSD FS <freebsd-fs@FreeBSD.org> Subject: Re: Deadlock with umount -f involving tmpfs on top of ZFS on r271170 Message-ID: <5422240F.4080003@FreeBSD.org> In-Reply-To: <20140923131244.GC8870@kib.kiev.ua> References: <5420D5FC.4030600@FreeBSD.org> <20140923131244.GC8870@kib.kiev.ua>
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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--
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