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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20200813162935.210070-12-kwolf@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=mreitz@redhat.com X-Mimecast-Spam-Score: 0.001 X-Mimecast-Originator: redhat.com Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="szEf7fFD2Sy8aH5EO2HwvCl01RNKtq8Tg" Received-SPF: pass client-ip=63.128.21.124; envelope-from=mreitz@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/08/17 01:24:49 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 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, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable 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: qemu-devel@nongnu.org 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) --szEf7fFD2Sy8aH5EO2HwvCl01RNKtq8Tg Content-Type: multipart/mixed; boundary="jYVn8bGlKMA5AqKos4lA6vQUNavywJtSB" --jYVn8bGlKMA5AqKos4lA6vQUNavywJtSB Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 13.08.20 18:29, Kevin Wolf wrote: > With this change, NBD exports are only created through the BlockExport > interface any more. This allows us finally to move things from the NBD > layer to the BlockExport layer if they make sense for other export > types, too. I see. > blk_exp_add() returns only a weak reference, so the explicit > nbd_export_put() goes away. >=20 > Signed-off-by: Kevin Wolf > --- > include/block/export.h | 2 ++ > include/block/nbd.h | 1 + > block/export/export.c | 2 +- > blockdev-nbd.c | 8 +++++++- > qemu-nbd.c | 28 ++++++++++++++++++++++------ > 5 files changed, 33 insertions(+), 8 deletions(-) [...] > diff --git a/blockdev-nbd.c b/blockdev-nbd.c > index d5b084acc2..8dd127af52 100644 > --- a/blockdev-nbd.c > +++ b/blockdev-nbd.c [...] > @@ -176,7 +182,7 @@ BlockExport *nbd_export_create(BlockExportOptions *ex= p_args, Error **errp) > =20 > assert(exp_args->type =3D=3D BLOCK_EXPORT_TYPE_NBD); > =20 > - if (!nbd_server) { > + if (!nbd_server && !is_qemu_nbd) { (This begs the question of how difficult it would be to let qemu-nbd use QMP=E2=80=99s nbd-server-start, but I will not ask it, for I fear the answe= r.) > error_setg(errp, "NBD server not running"); > return NULL; > } > diff --git a/qemu-nbd.c b/qemu-nbd.c > index 48aa8a9d46..d967b8fcb9 100644 > --- a/qemu-nbd.c > +++ b/qemu-nbd.c [...] > @@ -1050,9 +1050,27 @@ int main(int argc, char **argv) > =20 > bs->detect_zeroes =3D detect_zeroes; > =20 > - export =3D nbd_export_new(bs, export_name, > - export_description, bitmap, readonly, shared= > 1, > - writethrough, &error_fatal); > + nbd_server_is_qemu_nbd(true); > + > + export_opts =3D g_new(BlockExportOptions, 1); > + *export_opts =3D (BlockExportOptions) { > + .type =3D BLOCK_EXPORT_TYPE_NBD, > + .has_writethrough =3D true, > + .writethrough =3D writethrough, > + .u.nbd =3D { > + .device =3D g_strdup(bdrv_get_node_name(bs)), > + .has_name =3D true, > + .name =3D g_strdup(export_name), > + .has_description =3D !!export_description, > + .description =3D g_strdup(export_description), > + .has_writable =3D true, > + .writable =3D !readonly, > + .has_bitmap =3D !!bitmap, > + .bitmap =3D g_strdup(bitmap), > + }, > + }; > + blk_exp_add(export_opts, &error_fatal); Why not use the already-global qmp_block_export_add(), if we don=E2=80=99t = need the return value here? (Will we require it at some point?) Max > + qapi_free_BlockExportOptions(export_opts); > =20 > if (device) { > #if HAVE_NBD_DEVICE --jYVn8bGlKMA5AqKos4lA6vQUNavywJtSB-- --szEf7fFD2Sy8aH5EO2HwvCl01RNKtq8Tg Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEkb62CjDbPohX0Rgp9AfbAGHVz0AFAl86k84ACgkQ9AfbAGHV z0BlXgf/eI+714lYO5BXwQ9pTJTG5rjB3WmjECl/r17YEQM132iT5OmZFmwJZjmR +6dolhwUW2v28Vs8eZZE06nN01uZurB9XmBl6H7wX2VJs7mkRCojOL5YdmX6XJj2 VBU+LagKOTscuHoPuxYiL2g/EtQvjvGVOObOnOr8zO1C6JYssfEhd7ua3PlbTjI7 t/7Ss7CKqNFTiAtDBtd0qTL/pzLb5PMWPEKKWEJis5XpSubE7Y+6z7KSUZvtPJ+w 1tEUYdYWxjNMEMDs2cmNsTzIg1cbgTANtKeAJlgOIzzD1Cqho1Nv3oeMss9dr84Q cEH8n2Ep/XTBopu6GKMIx+ea/fQDmQ== =lVFo -----END PGP SIGNATURE----- --szEf7fFD2Sy8aH5EO2HwvCl01RNKtq8Tg--