From nobody Sun Feb 8 19:55:03 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of redhat.com designates 209.132.183.28 as permitted sender) client-ip=209.132.183.28; envelope-from=libvir-list-bounces@redhat.com; helo=mx1.redhat.com; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of redhat.com designates 209.132.183.28 as permitted sender) smtp.mailfrom=libvir-list-bounces@redhat.com; dmarc=pass(p=none dis=none) header.from=redhat.com Return-Path: Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by mx.zohomail.com with SMTPS id 1530903045556987.6733096418374; Fri, 6 Jul 2018 11:50:45 -0700 (PDT) Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 720F6307D857; Fri, 6 Jul 2018 18:50:44 +0000 (UTC) Received: from colo-mx.corp.redhat.com (colo-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.21]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 277C89F78; Fri, 6 Jul 2018 18:50:44 +0000 (UTC) Received: from lists01.pubmisc.prod.ext.phx2.redhat.com (lists01.pubmisc.prod.ext.phx2.redhat.com [10.5.19.33]) by colo-mx.corp.redhat.com (Postfix) with ESMTP id C35A24A460; Fri, 6 Jul 2018 18:50:43 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id w66IoNpx015821 for ; Fri, 6 Jul 2018 14:50:23 -0400 Received: by smtp.corp.redhat.com (Postfix) id DF25E2A313; Fri, 6 Jul 2018 18:50:23 +0000 (UTC) Received: from unknown4CEB42C824F4.redhat.com (ovpn-116-76.phx2.redhat.com [10.3.116.76]) by smtp.corp.redhat.com (Postfix) with ESMTP id 9F4112A2DF for ; Fri, 6 Jul 2018 18:50:23 +0000 (UTC) From: John Ferlan To: libvir-list@redhat.com Date: Fri, 6 Jul 2018 14:50:19 -0400 Message-Id: <20180706185019.31220-3-jferlan@redhat.com> In-Reply-To: <20180706185019.31220-1-jferlan@redhat.com> References: <20180706185019.31220-1-jferlan@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-loop: libvir-list@redhat.com Subject: [libvirt] [REPOST PATCHv2 2/2] qemu: Use the correct vm def on cold attach X-BeenThere: libvir-list@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: Development discussions about the libvirt library & tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Sender: libvir-list-bounces@redhat.com Errors-To: libvir-list-bounces@redhat.com X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.48]); Fri, 06 Jul 2018 18:50:45 +0000 (UTC) X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Type: text/plain; charset="utf-8" https://bugzilla.redhat.com/show_bug.cgi?id=3D1559867 When attaching a device to the domain we need to be sure to use the correct domain definition (vm->def or vm->newDef) when calling virDomainDeviceDefParse because the post parse processing algorithms that may assign an address for the device will use whatever domain definition was passed in. Additionally, some devices (SCSI hostdev and SCSI disk) use algorithms that rely on knowing what already exists of the other type when generating the new device's address. Using the wrong VM definition could result in duplicated addresses. In the case of the bz, two hostdev's with no domain address provided were added to the running domain's config only. However, the parsing algorithm used the live domain in order to figure out the host device address resulting in the same address being used and a subsequent start failing due to duplicate address. Fix this by separating the checks/code into CONFIG and LIVE processing using the correct definition for each block and peforming cleanup for both options as necessary. Signed-off-by: John Ferlan --- src/qemu/qemu_driver.c | 52 ++++++++++++++++++++++------------------------= ---- 1 file changed, 23 insertions(+), 29 deletions(-) diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index ef1abe3f68..60085befea 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -8469,7 +8469,8 @@ qemuDomainAttachDeviceLiveAndConfig(virDomainObjPtr v= m, { virDomainDefPtr vmdef =3D NULL; virQEMUDriverConfigPtr cfg =3D NULL; - virDomainDeviceDefPtr dev =3D NULL, dev_copy =3D NULL; + virDomainDeviceDefPtr devConf =3D NULL; + virDomainDeviceDefPtr devLive =3D NULL; int ret =3D -1; virCapsPtr caps =3D NULL; unsigned int parse_flags =3D VIR_DOMAIN_DEF_PARSE_INACTIVE | @@ -8483,49 +8484,43 @@ qemuDomainAttachDeviceLiveAndConfig(virDomainObjPtr= vm, if (!(caps =3D virQEMUDriverGetCapabilities(driver, false))) goto cleanup; =20 - dev =3D dev_copy =3D virDomainDeviceDefParse(xml, vm->def, - caps, driver->xmlopt, - parse_flags); - if (dev =3D=3D NULL) - goto cleanup; - - if (virDomainDeviceValidateAliasForHotplug(vm, dev, flags) < 0) - goto cleanup; - - if (flags & VIR_DOMAIN_AFFECT_CONFIG && - flags & VIR_DOMAIN_AFFECT_LIVE) { - /* If we are affecting both CONFIG and LIVE - * create a deep copy of device as adding - * to CONFIG takes one instance. - */ - dev_copy =3D virDomainDeviceDefCopy(dev, vm->def, caps, driver->xm= lopt); - if (!dev_copy) - goto cleanup; - } - + /* The config and live post processing address auto-generation algorit= hms + * rely on the correct vm->def or vm->newDef being passed, so call the + * device parse based on which definition is in use */ if (flags & VIR_DOMAIN_AFFECT_CONFIG) { - /* Make a copy for updated domain. */ vmdef =3D virDomainObjCopyPersistentDef(vm, caps, driver->xmlopt); if (!vmdef) goto cleanup; =20 - if (virDomainDefCompatibleDevice(vmdef, dev, NULL, + if (!(devConf =3D virDomainDeviceDefParse(xml, vmdef, caps, + driver->xmlopt, parse_flag= s))) + goto cleanup; + + if (virDomainDefCompatibleDevice(vmdef, devConf, NULL, VIR_DOMAIN_DEVICE_ACTION_ATTACH, false) < 0) goto cleanup; - if ((ret =3D qemuDomainAttachDeviceConfig(vmdef, dev, caps, + + if ((ret =3D qemuDomainAttachDeviceConfig(vmdef, devConf, caps, parse_flags, driver->xmlopt)) < 0) goto cleanup; } =20 if (flags & VIR_DOMAIN_AFFECT_LIVE) { - if (virDomainDefCompatibleDevice(vm->def, dev_copy, NULL, + if (!(devLive =3D virDomainDeviceDefParse(xml, vm->def, caps, + driver->xmlopt, parse_flag= s))) + goto cleanup; + + if (virDomainDeviceValidateAliasForHotplug(vm, devLive, flags) < 0) + goto cleanup; + + if (virDomainDefCompatibleDevice(vm->def, devLive, NULL, VIR_DOMAIN_DEVICE_ACTION_ATTACH, true) < 0) goto cleanup; =20 - if ((ret =3D qemuDomainAttachDeviceLive(vm, dev_copy, driver)) < 0) + if ((ret =3D qemuDomainAttachDeviceLive(vm, devLive, driver)) < 0) goto cleanup; /* * update domain status forcibly because the domain status may be @@ -8549,9 +8544,8 @@ qemuDomainAttachDeviceLiveAndConfig(virDomainObjPtr v= m, =20 cleanup: virDomainDefFree(vmdef); - if (dev !=3D dev_copy) - virDomainDeviceDefFree(dev_copy); - virDomainDeviceDefFree(dev); + virDomainDeviceDefFree(devConf); + virDomainDeviceDefFree(devLive); virObjectUnref(cfg); virObjectUnref(caps); =20 --=20 2.14.4 -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list