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Mon, 9 Dec 2019 17:58:28 +0000 (UTC) Received: from dresden.str.redhat.com (unknown [10.36.118.51]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 22F445D6B7; Mon, 9 Dec 2019 17:58:23 +0000 (UTC) Subject: Re: [bugfix ping2] Re: [PATCH v2 0/2] fix qcow2_can_store_new_dirty_bitmap From: Max Reitz To: Vladimir Sementsov-Ogievskiy , "qemu-block@nongnu.org" References: <20191014115126.15360-1-vsementsov@virtuozzo.com> <0db82122-ee0d-a346-cb49-d902d5d66b77@virtuozzo.com> Autocrypt: addr=mreitz@redhat.com; prefer-encrypt=mutual; keydata= mQENBFXOJlcBCADEyyhOTsoa/2ujoTRAJj4MKA21dkxxELVj3cuILpLTmtachWj7QW+TVG8U /PsMCFbpwsQR7oEy8eHHZwuGQsNpEtNC2G/L8Yka0BIBzv7dEgrPzIu+W3anZXQW4702+uES U29G8TP/NGfXRRHGlbBIH9KNUnOSUD2vRtpOLXkWsV5CN6vQFYgQfFvmp5ZpPeUe6xNplu8V mcTw8OSEDW/ZnxJc8TekCKZSpdzYoxfzjm7xGmZqB18VFwgJZlIibt1HE0EB4w5GsD7x5ekh awIe3RwoZgZDLQMdOitJ1tUc8aqaxvgA4tz6J6st8D8pS//m1gAoYJWGwwIVj1DjTYLtABEB AAG0HU1heCBSZWl0eiA8bXJlaXR6QHJlZGhhdC5jb20+iQFTBBMBCAA9AhsDBQkSzAMABQsJ CAcCBhUICQoLAgQWAgMBAh4BAheABQJVzie5FRhoa3A6Ly9rZXlzLmdudXBnLm5ldAAKCRD0 B9sAYdXPQDcIB/9uNkbYEex1rHKz3mr12uxYMwLOOFY9fstP5aoVJQ1nWQVB6m2cfKGdcRe1 2/nFaHSNAzT0NnKz2MjhZVmcrpyd2Gp2QyISCfb1FbT82GMtXFj1wiHmPb3CixYmWGQUUh+I AvUqsevLA+WihgBUyaJq/vuDVM1/K9Un+w+Tz5vpeMidlIsTYhcsMhn0L9wlCjoucljvbDy/ 8C9L2DUdgi3XTa0ORKeflUhdL4gucWoAMrKX2nmPjBMKLgU7WLBc8AtV+84b9OWFML6NEyo4 4cP7cM/07VlJK53pqNg5cHtnWwjHcbpGkQvx6RUx6F1My3y52vM24rNUA3+ligVEgPYBuQEN BFXOJlcBCADAmcVUNTWT6yLWQHvxZ0o47KCP8OcLqD+67T0RCe6d0LP8GsWtrJdeDIQk+T+F xO7DolQPS6iQ6Ak2/lJaPX8L0BkEAiMuLCKFU6Bn3lFOkrQeKp3u05wCSV1iKnhg0UPji9V2 W5eNfy8F4ZQHpeGUGy+liGXlxqkeRVhLyevUqfU0WgNqAJpfhHSGpBgihUupmyUg7lfUPeRM DzAN1pIqoFuxnN+BRHdAecpsLcbR8sQddXmDg9BpSKozO/JyBmaS1RlquI8HERQoe6EynJhd 64aICHDfj61rp+/0jTIcevxIIAzW70IadoS/y3DVIkuhncgDBvGbF3aBtjrJVP+5ABEBAAGJ ASUEGAEIAA8FAlXOJlcCGwwFCRLMAwAACgkQ9AfbAGHVz0CbFwf9F/PXxQR9i4N0iipISYjU sxVdjJOM2TMut+ZZcQ6NSMvhZ0ogQxJ+iEQ5OjnIputKvPVd5U7WRh+4lF1lB/NQGrGZQ1ic alkj6ocscQyFwfib+xIe9w8TG1CVGkII7+TbS5pXHRxZH1niaRpoi/hYtgzkuOPp35jJyqT/ /ELbqQTDAWcqtJhzxKLE/ugcOMK520dJDeb6x2xVES+S5LXby0D4juZlvUj+1fwZu+7Io5+B bkhSVPb/QdOVTpnz7zWNyNw+OONo1aBUKkhq2UIByYXgORPFnbfMY7QWHcjpBVw9MgC4tGeF R4bv+1nAMMxKmb5VvQCExr0eFhJUAHAhVg== Message-ID: Date: Mon, 9 Dec 2019 18:58:22 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.2 MIME-Version: 1.0 In-Reply-To: X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Mimecast-Spam-Score: 0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="qS29Io3xhRKUgVADNw1bLllBv1hsyCsmm" X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 205.139.110.120 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "kwolf@redhat.com" , "jsnow@redhat.com" , "qemu-devel@nongnu.org" , Denis Lunev Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --qS29Io3xhRKUgVADNw1bLllBv1hsyCsmm Content-Type: multipart/mixed; boundary="uNYV0YItdrxQdWY95HFIXWSanOM9t2SmO" --uNYV0YItdrxQdWY95HFIXWSanOM9t2SmO Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 09.12.19 17:30, Max Reitz wrote: > On 02.12.19 15:09, Vladimir Sementsov-Ogievskiy wrote: >> Hi again! >> >> Still forgotten bug-fix :( >> >> Is it too late for 4.2? >=20 > Sorry. :-/ >=20 > Yes, I think I just forgot it. I don=E2=80=99t think it=E2=80=99s too im= portant for > 4.2, so, well, it isn=E2=80=99t too bad, but... Sorry. >=20 >> I can't imagine better test, and it tests exactly what written in >> https://bugzilla.redhat.com/show_bug.cgi?id=3D1712636 >> >> (Hmm, actually, I doubt that it is real use-case, more probably it's a b= ug in management layer) >> >> So, take this with test or without test, to 4.2 or 5.0. >=20 > I was thinking of seeing whether I could write a quicker test, but of > course we should take the patch either way. OK, I give up. It=E2=80=99s very much possible to create an image with 655= 35 bitmaps very quickly (like, under a second) outside of qemu, but just opening it takes 2:30 min (because of the quadratic complexity of checking whether a bitmap of the same name already exists). Max --uNYV0YItdrxQdWY95HFIXWSanOM9t2SmO-- --qS29Io3xhRKUgVADNw1bLllBv1hsyCsmm Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEkb62CjDbPohX0Rgp9AfbAGHVz0AFAl3uiz4ACgkQ9AfbAGHV z0DRGgf+P2yuzy66SgUfQXjKvZ0yoUhVhpu7gpVcOG8sXgYSBen1LVmOtSYRPZNI 8pRVyY/xtpLPaXUdqhv69MTxCcSliYLeb5XAXCLKM07u0xIvx5oRI/a5I5Ps14Se DZzkcmO7gZXn49dLpDde8BzHSaw6AsUP/J+a86CQXkgRMraNmzMYyk6vE97XTekX rXI1eHN/JiyCWmT2g+NCMGVsRvP07et3LNXyP/wXmeG94lO7QWbhAxBV162X6bp0 AL/jr4GuCJsl9hgaJJsuytOLdixV4g8ifOX0uj02oy2C8luyThx/7uT3wSbMHZxQ gVfq3Z3oyKnymcFLI8SQ148mZR4+yw== =4ueZ -----END PGP SIGNATURE----- --qS29Io3xhRKUgVADNw1bLllBv1hsyCsmm--