From owner-freebsd-fs@FreeBSD.ORG Mon Sep 7 11:43:40 2009 Return-Path: Delivered-To: freebsd-fs@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id EC716106566C for ; Mon, 7 Sep 2009 11:43:40 +0000 (UTC) (envelope-from pjd@garage.freebsd.pl) Received: from mail.garage.freebsd.pl (chello087206049004.chello.pl [87.206.49.4]) by mx1.freebsd.org (Postfix) with ESMTP id 2B8468FC08 for ; Mon, 7 Sep 2009 11:43:39 +0000 (UTC) Received: by mail.garage.freebsd.pl (Postfix, from userid 65534) id D212B45CA0; Mon, 7 Sep 2009 13:43:37 +0200 (CEST) Received: from localhost (pdawidek.wheel.pl [10.0.1.1]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.garage.freebsd.pl (Postfix) with ESMTP id EB4A045C89; Mon, 7 Sep 2009 13:43:32 +0200 (CEST) Date: Mon, 7 Sep 2009 13:43:36 +0200 From: Pawel Jakub Dawidek To: killasmurf86@gmail.com, freebsd-fs@FreeBSD.org Message-ID: <20090907114336.GH1659@garage.freebsd.pl> References: <200908120538.n7C5cAUF046203@freefall.freebsd.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="g3RkK9jYN81zD2N+" Content-Disposition: inline In-Reply-To: <200908120538.n7C5cAUF046203@freefall.freebsd.org> User-Agent: Mutt/1.4.2.3i X-PGP-Key-URL: http://people.freebsd.org/~pjd/pjd.asc X-OS: FreeBSD 8.0-CURRENT i386 X-Spam-Checker-Version: SpamAssassin 3.0.4 (2005-06-05) on mail.garage.freebsd.pl X-Spam-Level: X-Spam-Status: No, score=-5.9 required=4.5 tests=ALL_TRUSTED,BAYES_00 autolearn=ham version=3.0.4 Cc: Subject: Re: kern/137037: [zfs] [hang] zfs rollback on root causes FreeBSD to freeze in few seconds X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 07 Sep 2009 11:43:41 -0000 --g3RkK9jYN81zD2N+ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Aug 12, 2009 at 05:38:10AM +0000, pjd@FreeBSD.org wrote: > Note that rollback of root file system is impossible to do on-line anyway. > Rollback will modify data on your root file system and because of that > file system being rolled back has to be unmounted and mounted with new da= ta. > You shouldn't be able to unmount root file system anyway. Actually I was wrong here. Rollback is possible on a mounted file system, it doesn't need to unmount file system, but it is still a risky game. --=20 Pawel Jakub Dawidek http://www.wheel.pl pjd@FreeBSD.org http://www.FreeBSD.org FreeBSD committer Am I Evil? Yes, I Am! --g3RkK9jYN81zD2N+ Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4 (FreeBSD) iD8DBQFKpPHoForvXbEpPzQRAsHHAKCa6JDeMrit1+dRT15Kd+KF3IM5tgCeIzJj C7x6Fau/2Fsf73UoB/HG4CY= =piBJ -----END PGP SIGNATURE----- --g3RkK9jYN81zD2N+--