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Thu, 23 Jul 2020 07:43:35 +0000 (UTC) Subject: Re: [PATCH v2 11/20] qapi: backup: add x-max-chunk and x-max-workers parameters From: Max Reitz To: Vladimir Sementsov-Ogievskiy , qemu-block@nongnu.org References: <20200601181118.579-1-vsementsov@virtuozzo.com> <20200601181118.579-12-vsementsov@virtuozzo.com> <2117c54a-c9b3-59c6-c0b2-9fd84cb965b6@redhat.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: <76c4e42b-db7d-4cde-5db7-b86d24432d21@redhat.com> Date: Thu, 23 Jul 2020 09:43:33 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <2117c54a-c9b3-59c6-c0b2-9fd84cb965b6@redhat.com> X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="iZSqDSUmgZMAnyy37NU3OLerVPjpmMHCr" Received-SPF: pass client-ip=205.139.110.120; envelope-from=mreitz@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/07/23 02:33:29 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -40 X-Spam_score: -4.1 X-Spam_bar: ---- X-Spam_report: (-4.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action 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, wencongyang2@huawei.com, xiechanglong.d@gmail.com, armbru@redhat.com, qemu-devel@nongnu.org, den@openvz.org, jsnow@redhat.com 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) --iZSqDSUmgZMAnyy37NU3OLerVPjpmMHCr Content-Type: multipart/mixed; boundary="oWKfCHzcPrIttCioJATyURVS00dZ1DPhQ" --oWKfCHzcPrIttCioJATyURVS00dZ1DPhQ Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 22.07.20 14:22, Max Reitz wrote: > On 01.06.20 20:11, Vladimir Sementsov-Ogievskiy wrote: >> Add new parameters to configure future backup features. The patch >> doesn't introduce aio backup requests (so we actually have only one >> worker) neither requests larger than one cluster. Still, formally we >> satisfy these maximums anyway, so add the parameters now, to facilitate >> further patch which will really change backup job behavior. >> >> Options are added with x- prefixes, as the only use for them are some >> very conservative iotests which will be updated soon. >> >> Signed-off-by: Vladimir Sementsov-Ogievskiy >> --- >> qapi/block-core.json | 9 ++++++++- >> include/block/block_int.h | 7 +++++++ >> block/backup.c | 21 +++++++++++++++++++++ >> block/replication.c | 2 +- >> blockdev.c | 5 +++++ >> 5 files changed, 42 insertions(+), 2 deletions(-) [...] >> diff --git a/block/replication.c b/block/replication.c >> index 25987eab0f..a9ee82db80 100644 >> --- a/block/replication.c >> +++ b/block/replication.c >> @@ -563,7 +563,7 @@ static void replication_start(ReplicationState *rs, = ReplicationMode mode, >> s->backup_job =3D backup_job_create( >> NULL, s->secondary_disk->bs, s->hidden_= disk->bs, >> 0, MIRROR_SYNC_MODE_NONE, NULL, 0, fals= e, NULL, >> - true, >> + true, 0, 0, >=20 > Passing 0 for max_workers will error out immediately, won=E2=80=99t it? Ah, oops. Saw your own reply only now. Yep, 1 worker would be nice. :) --oWKfCHzcPrIttCioJATyURVS00dZ1DPhQ-- --iZSqDSUmgZMAnyy37NU3OLerVPjpmMHCr Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEkb62CjDbPohX0Rgp9AfbAGHVz0AFAl8ZP6UACgkQ9AfbAGHV z0DJgwgAo7YR751kMp6k1M2ATYfCD+u8H65E3zNr/p5XsAL9qVSHq7nFuOFyy47U MTcMX3+YtEZcvdIqElnHUNGEQTJ+/aEtYJgz+PXcdy1NN+uwtQuJI43yjCGne6BD Bc1diNSp3vrgB6NMa5RBDHf9g7HII5jUHkN38moxKU3VZ5Fv5qTVKCdJm1C8wMBs Xpjgf3ZjxMjcBpRT1fT9pG4qChwLEFu+CfOYPXSOMCSUMCvYjnA43oksem2i9GiU diXgyk9MarlbmB7NTa6B9wFg9p0brNuU8ZpZZ0fuIbNpvxMr/PRufW23EU1D9z9M unV793ACVnyRkJYSR+wthklc+x0k3w== =ycgW -----END PGP SIGNATURE----- --iZSqDSUmgZMAnyy37NU3OLerVPjpmMHCr--