Re: [libvirt] [PATCH] qemu: format serial, geometry and error policy on frontend disk device

Currently we format the serial, geometry and error policy on the -drive backend argument. QEMU added the ability to set serial and geometry on the frontend in the 1.2 release, and ability to set error policy in the 2.7 release. usb-storage is an oddity, however, as it lacks error policy support right now. Setting any of these on -drive has been deprecated and support for this will be removed very soon. Note that some disk buses (sd) still don't support -device. Although QEMU allowed these properties to be set on -drive for if=sd, they have been ignored so we don't loose anything by removing this. Signed-off-by: Daniel P. Berrangé <berrange(a)redhat.com&gt; --- src/qemu/qemu_capabilities.c | 2 ++ src/qemu/qemu_capabilities.h | 1 + src/qemu/qemu_command.c | 31 ++++++++++++++++--- .../caps_2.10.0.aarch64.xml | 1 + .../caps_2.10.0.ppc64.xml | 1 + .../caps_2.10.0.s390x.xml | 1 + .../caps_2.10.0.x86_64.xml | 1 + .../caps_2.11.0.s390x.xml | 1 + .../caps_2.12.0.aarch64.xml | 1 + .../caps_2.12.0.ppc64.xml | 1 + .../caps_2.12.0.s390x.xml | 1 + .../caps_2.12.0.x86_64.xml | 1 + .../qemucapabilitiesdata/caps_2.7.0.s390x.xml | 1 + .../caps_2.7.0.x86_64.xml | 1 + .../qemucapabilitiesdata/caps_2.8.0.s390x.xml | 1 + .../caps_2.8.0.x86_64.xml | 1 + .../qemucapabilitiesdata/caps_2.9.0.ppc64.xml | 1 + .../qemucapabilitiesdata/caps_2.9.0.s390x.xml | 1 + .../caps_2.9.0.x86_64.xml | 1 + .../disk-drive-network-tlsx509.args | 12 +++---- .../disk-drive-network-vxhs.args | 4 +-- tests/qemuxml2argvdata/disk-drive-shared.args | 5 +-- tests/qemuxml2argvdata/disk-geometry.args | 6 ++-- tests/qemuxml2argvdata/disk-ide-wwn.args | 5 ++- .../qemuxml2argvdata/disk-scsi-disk-wwn.args | 4 +-- tests/qemuxml2argvdata/disk-serial.args | 10 +++--- tests/qemuxml2argvdata/disk-serial.xml | 1 - tests/qemuxml2argvtest.c | 1 + tests/qemuxml2xmloutdata/disk-serial.xml | 1 - 29 files changed, 69 insertions(+), 30 deletions(-)

diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c index 419208ad5c..b9a6c2d612 100644 --- a/src/qemu/qemu_capabilities.c +++ b/src/qemu/qemu_capabilities.c @@ -500,6 +500,7 @@ VIR_ENUM_IMPL(virQEMUCaps, QEMU_CAPS_LAST, /* 310 */ "sev-guest", + "disk-error", ); @@ -1162,6 +1163,7 @@ static struct virQEMUCapsStringFlags virQEMUCapsDevicePropsVirtioBlk[] = { { "iommu_platform", QEMU_CAPS_VIRTIO_PCI_IOMMU_PLATFORM }, { "ats", QEMU_CAPS_VIRTIO_PCI_ATS }, { "write-cache", QEMU_CAPS_DISK_WRITE_CACHE }, + { "werror", QEMU_CAPS_DISK_ERROR }, };

static struct virQEMUCapsStringFlags virQEMUCapsDevicePropsVirtioNet[] = { diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h index 3519a194e9..1245fb46cf 100644 --- a/src/qemu/qemu_capabilities.h +++ b/src/qemu/qemu_capabilities.h @@ -484,6 +484,7 @@ typedef enum { /* virQEMUCapsFlags grouping marker for syntax-check */ /* 310 */ QEMU_CAPS_SEV_GUEST, /* -object sev-guest,... */ + QEMU_CAPS_DISK_ERROR, /* -device $DISK,werror=,rerror=X */ QEMU_CAPS_LAST /* this must always be the last item */ } virQEMUCapsFlags; diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index 446df3e1d8..e97158fe64 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -1621,8 +1621,6 @@ qemuBuildDiskFrontendAttributes(virDomainDiskDefPtr disk, virBufferAddLit(buf, ",serial="); virBufferEscape(buf, '\\', " ", "%s", disk->serial); } - - qemuBuildDiskFrontendAttributeErrorPolicy(disk, buf); } @@ -1662,11 +1660,29 @@ qemuBuildDriveStr(virDomainDiskDefPtr disk, virBufferAsprintf(&opt, "if=%s", virDomainDiskQEMUBusTypeToString(disk->bus)); virBufferAsprintf(&opt, ",index=%d", idx); + + if (disk->serial) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("Serial property not supported for drive bus '%s'"), + virDomainDiskBusTypeToString(disk->bus)); + goto error; + } + if (disk->geometry.cylinders > 0 && + disk->geometry.heads > 0 && + disk->geometry.sectors > 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("Geometry not supported for drive bus '%s'"), + virDomainDiskBusTypeToString(disk->bus)); + goto error; + } } - /* Format attributes for the drive itself (not the storage backing it) which - * we've formatted historically with -drive */ - qemuBuildDiskFrontendAttributes(disk, &opt); + /* werror/rerror are really frontend attributes, but older + * qemu requires them on -drive instead of -device */ + if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_DISK_ERROR) || + disk->bus == VIR_DOMAIN_DISK_BUS_USB) + qemuBuildDiskFrontendAttributeErrorPolicy(disk, &opt); + /* While this is a frontend attribute, it only makes sense to be used when * legacy -drive is used. In modern qemu the 'ide-cd' or 'scsi-cd' are used. @@ -2125,6 +2141,11 @@ qemuBuildDriveDevStr(const virDomainDef *def, if (qemuBuildDriveDevCacheStr(disk, &opt, qemuCaps) < 0) goto error; + qemuBuildDiskFrontendAttributes(disk, &opt); + if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DISK_ERROR) && + disk->bus != VIR_DOMAIN_DISK_BUS_USB)

+ qemuBuildDiskFrontendAttributeErrorPolicy(disk, &opt); + if (virBufferCheckError(&opt) < 0) goto error;