Date: Wed, 17 Jul 2013 22:45:57 +0300 From: Konstantin Belousov <kostikbel@gmail.com> To: Andriy Gapon <avg@FreeBSD.org> Cc: freebsd-fs@FreeBSD.org, zfs-devel@FreeBSD.org Subject: Re: zfs_rename: another zfs+vfs deadlock Message-ID: <20130717194557.GU5991@kib.kiev.ua> In-Reply-To: <51E679FD.3040306@FreeBSD.org> References: <51E679FD.3040306@FreeBSD.org>
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--/Isdj7O9hWi8F9Bn Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Jul 17, 2013 at 02:03:25PM +0300, Andriy Gapon wrote: > A scenario to reproduce this bug could be like this. > mkdir a > mkdir a/b > mv some-file a/b/ (in parallel with) stat a/b > Of course it would have to be repeated many times to hit the right timing > window. Also, namecache could interfere with this scenario, but I am not= sure. >=20 There is no questions or proposals on how to approach the fix, JFYI mail ? I recommend you to look at the ufs_checkpath() and its use in the ufs_rename(). --/Isdj7O9hWi8F9Bn Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.20 (FreeBSD) iQIcBAEBAgAGBQJR5vR0AAoJEJDCuSvBvK1BevYP/03MlbINCVbX1tI9KuT02IPF KK1YPWykvf11h/GmeONiZv3qZjvYWe9jwkga4f9Hrb6DjAhIZS+3MuIwLK12yANd xfNNFF7XMHcoxyvuF4wDeufgn04ttRgREV0vaDFnODL+fMhzuz7sfjXI4lM9x6+0 nZaAjsS8eR2rYgC2z0oPRyBK+/mMldayM5FWUXBynLpkjgwlk7XP7A6BX9Fw7Mtp vFVKtGSg613ugUYZWwgI5gzJbUjtGCO7l6gQyYQCDGBeetWmyPLRHfz2aS+KsPEI cpG5vi7ruXcA9KMUg8jW9M+9qyMcCKWsnkkTUcpUOXNhbpDMaRKthGM1MVSu8HA6 Q1KfdVuXWPYgg8GJvrBXo6UjgPQmzp/Gw2a4SE/DcHhZ4ouusU0lxX0TOErf+wHW 4i8vWCJO4zk7HIpX546wLqF7eOzDSGJ3VdCkWNheeO6ca7f8wAW8f2/8mD1iBdZo s3wcGSfAKcYXJMX5J7SwTtFtv8V36lU4+XxOo0KiW/tDTu07sPyo7Zgw6iRwnlr+ +KYJzqTI0RftjD0lKlJPYZJTSYIPYffzu9fweiyrO9BbzQf/k+amDK00k30oy1D9 zf0olSwJN+2FhfnzQJf9P+3Urq10JilpmH4xJwuy3M8yKtqQ/eLh4no2ojAORErl nr17M0hGUNV9MUHmaDwL =zpSb -----END PGP SIGNATURE----- --/Isdj7O9hWi8F9Bn--
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