From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:32789) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VHbvS-0000Ig-U4 for qemu-devel@nongnu.org; Thu, 05 Sep 2013 11:56:59 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VHbvO-0000U4-2D for qemu-devel@nongnu.org; Thu, 05 Sep 2013 11:56:54 -0400 Received: from mx1.redhat.com ([209.132.183.28]:47176) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VHbvN-0000U0-QS for qemu-devel@nongnu.org; Thu, 05 Sep 2013 11:56:50 -0400 Message-ID: <5228A9BB.2040503@redhat.com> Date: Thu, 05 Sep 2013 09:56:43 -0600 From: Eric Blake MIME-Version: 1.0 References: <1378215952-7151-1-git-send-email-kwolf@redhat.com> <20130904080352.GA8031@stefanha-thinkpad.redhat.com> <20130904093950.GB3562@dhcp-200-207.str.redhat.com> <20130905092103.GA12293@stefanha-thinkpad.redhat.com> <20130905111828.GE2826@dhcp-200-207.str.redhat.com> <20130905152002.GH2826@dhcp-200-207.str.redhat.com> In-Reply-To: <20130905152002.GH2826@dhcp-200-207.str.redhat.com> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="DfwuOInkFl4iTEHtfQG8bVTN7Moxn98dU" Subject: Re: [Qemu-devel] [RFC] qcow2 journalling draft List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Kevin Wolf Cc: =?UTF-8?B?QmVub8OudCBDYW5ldA==?= , Fam Zheng , Stefan Hajnoczi , Jeff Cody , qemu-devel , Max Reitz , Stefan Hajnoczi This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --DfwuOInkFl4iTEHtfQG8bVTN7Moxn98dU Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On 09/05/2013 09:20 AM, Kevin Wolf wrote: >=20 > One additional thought that might make the thing a bit more interesting= : > Sequence numbers can wrap around as well. On the other hand, if sequence numbers are 64-bit, the number of operations required to cause a wrap far exceeds the expected lifetime of any of us on this list, and we can safely assume it to be a non-issue. (There's other places in qemu where we intentionally have an abort() if a 64-bit number would wrap...) --=20 Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org --DfwuOInkFl4iTEHtfQG8bVTN7Moxn98dU Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (GNU/Linux) Comment: Public key at http://people.redhat.com/eblake/eblake.gpg Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBCAAGBQJSKKm7AAoJEKeha0olJ0NqVIAH/RLykbR7dDD/vLncnO4mKhzF bWPK+H78DfgcleRQeyE3KymVVXcDXMrZAVQ6pbuZKCZdYijsk/jk3zectik/LJpx GWURvpKuHvkeZJPzXfandaVsmqVIF8zWlCV3EimxcD9Ij1Mg33zAtzyvC4BHo+iP zKPEIwYXTUm1LDeRQP9WoLWHmAkeszoDKYBl5TbasXq5Ydc/b3Pst2M2gT4+GuD8 +fh8ewVWZ98GIOtVl9p3bv3trxtWdomkiRxAYqxzRhv0PA7/5HeCN5Z2XjIEWZIG AzcJWOizMJN5a3vNHCbr9jqxZpAzJ7uRPXbYF9Kk7IPnLgiAXM91MOVRysV0J4c= =FKnK -----END PGP SIGNATURE----- --DfwuOInkFl4iTEHtfQG8bVTN7Moxn98dU--