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[libvirt] [PATCH v2 0/5] Support rng backend model builtin
by Han Han 24 Jan '20

24 Jan '20

https://bugzilla.redhat.com/show_bug.cgi?id=1785091 Implement 'rng-builtin' backend from QEMU. This feature is introduced to QEMU since v4.2. It uses getrandom() to get random, no external random source needed. github repo: https://github.com/qiankehan/libvirt/tree/rng-builtin_v2 Changes from v1: - Fix failures in 'make check' and 'make syntax-check' - Adjust the structure of patches v1: https://www.redhat.com/archives/libvir-list/2020-January/msg00000.html Han Han (5): qemu_capabilities: Introduce QEMU_CAPS_OBJECT_RNG_BUILTIN util: Do not assume comma after object id conf: Add rng backend model builtin qemu: Implement builtin rng backend news: Update news for rng backend type builtin docs/formatdomain.html.in | 10 ++++++ docs/formatdomaincaps.html.in | 1 + docs/news.xml | 10 ++++++ docs/schemas/domaincommon.rng | 6 ++++ src/conf/domain_audit.c | 2 ++ src/conf/domain_conf.c | 9 +++++ src/conf/domain_conf.h | 1 + src/qemu/qemu_capabilities.c | 4 +++ src/qemu/qemu_capabilities.h | 1 + src/qemu/qemu_command.c | 15 ++++++++ src/qemu/qemu_domain.c | 3 ++ src/util/virqemu.c | 12 ++++--- .../domaincapsdata/qemu_4.2.0-q35.x86_64.xml | 1 + .../domaincapsdata/qemu_4.2.0-tcg.x86_64.xml | 1 + .../qemu_4.2.0-virt.aarch64.xml | 1 + tests/domaincapsdata/qemu_4.2.0.aarch64.xml | 1 + tests/domaincapsdata/qemu_4.2.0.ppc64.xml | 1 + tests/domaincapsdata/qemu_4.2.0.s390x.xml | 1 + tests/domaincapsdata/qemu_4.2.0.x86_64.xml | 1 + .../caps_4.2.0.aarch64.xml | 1 + .../qemucapabilitiesdata/caps_4.2.0.ppc64.xml | 1 + .../qemucapabilitiesdata/caps_4.2.0.s390x.xml | 1 + .../caps_4.2.0.x86_64.xml | 1 + .../virtio-rng-builtin.x86_64-latest.args | 35 +++++++++++++++++++ tests/qemuxml2argvdata/virtio-rng-builtin.xml | 26 ++++++++++++++ tests/qemuxml2argvtest.c | 1 + .../virtio-rng-builtin.x86_64-latest.xml | 31 ++++++++++++++++ tests/qemuxml2xmltest.c | 1 + 28 files changed, 174 insertions(+), 5 deletions(-) create mode 100644 tests/qemuxml2argvdata/virtio-rng-builtin.x86_64-latest.args create mode 100644 tests/qemuxml2argvdata/virtio-rng-builtin.xml create mode 100644 tests/qemuxml2xmloutdata/virtio-rng-builtin.x86_64-latest.xml -- 2.24.0.rc1

2 7

Re: [Bug 1860759] Re: [REGRESSION] option `-snapshot` ignored with blockdev
by Eric Blake 24 Jan '20

24 Jan '20

On 1/24/20 4:41 AM, Ildar wrote: > Max, thanks a lot for the explanation. > Do you mean that snapshot-ing isn't possible totally for blockdev? Then I > guess some libvirt users are in trouble :(( > Actually I didn't quite caught the reason why a blockdev supports backing > but not {backing to a file on /tmp then promptly deleted} ? What's the > technical difference? > On 1/24/20 4:05 AM, Max Reitz wrote: > > > I don’t know much about libvirt, but I would have thought that any > manual modification of the qemu command line isn’t supported and might > always break. > > Anyway, from a QEMU POV, -snapshot only works with -drive (this includes > -hda, etc.). It doesn’t work with -blockdev. I can see that this isn’t > documented for -snapshot, but basically whenever -blockdev is used, the > user assumes full responsibility for the block graph (or at least that > particular subgraph). We cannot enable snapshot functionality then. Libvirt has never produced a qemu command line containing '-snapshot'. Part of this is that libvirt wants to control SELinux settings, and letting qemu create a temporary overlay in /tmp in order to implement -snapshot does not play nicely with libvirt pre-creating all files that qemu is allowed to access. The fact that you were able to manually add -snapshot to your qemu command line with older libvirt using -drive (I'm assuming you were also not using libvirt's SELinux support, because if you were, qemu would have been unable to create/access the temporary wrapper in /tmp), is a nice hack. But since modern qemu has declared -snapshot to be unsupported with -blockdev, and modern libvirt has switched to -blockdev, I claim that this is not a qemu bug, but a libvirt feature request. That said, libvirt has had a vision for a design for implementing the equivalent of -drive -snapshot: the <transient/> sub-element added to the domain/disk/source/driver element has been documented for a long time: https://libvirt.org/formatdomain.html "transient If present, this indicates that changes to the device contents should be reverted automatically when the guest exits. With some hypervisors, marking a disk transient prevents the domain from participating in migration or snapshots. Since 0.9.5 " However, no one has yet implemented it for libvirt's qemu driver. Part of our reluctance has been that we knew that implementing it would require libvirt to precreate the wrapper file on every guest start, and it is only very recently that we've even had enough functionality in libvirt's qemu driver coupled with new qemu commands to create qcow2 images using QMP rather than having to shell out to qemu-img. And part of it is that there was no point in implementing something to work with -drive, when we knew we had to rework everything for -blockdev anyways. But now that the work in libvirt to switch to -blockdev is done, it should be a lot easier to implement PROPER support for the <transient/> tag, at least for -blockdev usage. -- Eric Blake, Principal Software Engineer Red Hat, Inc. +1-919-301-3226 Virtualization: qemu.org | libvirt.org

1 0

[PATCH 0/3] qemu_capabilities: Reword domain caps cache
by Michal Privoznik 24 Jan '20

24 Jan '20

It's fairly easy to reproduce the bug (see its description in 3/3). Just put a sleep here: diff --git a/src/qemu/qemu_conf.c b/src/qemu/qemu_conf.c index b62dd1df52..eeae967420 100644 --- a/src/qemu/qemu_conf.c +++ b/src/qemu/qemu_conf.c @@ -1399,6 +1399,7 @@ virQEMUDriverGetDomainCapabilities(virQEMUDriverPtr driver, key = g_strdup_printf("%d:%d:%s:%s", data.arch, data.virttype, NULLSTR(data.machine), NULLSTR(data.path)); + sleep(5); if (virHashAddEntry(domCapsCache, key, domCaps) < 0) return NULL; } And then try to get domcaps from two consoles at once: virsh domcapabilities One will succeed, the other will fail with an error. Michal Prívozník (3): cpu.c: Check properly for virCapabilitiesGetNodeInfo() retval qemu_conf: Avoid dereferencing NULL in virQEMUDriverGetHost{NUMACaps,CPU} qemu_capabilities: Reword domain caps cache src/cpu/cpu.c | 2 +- src/qemu/qemu_capabilities.c | 118 +++++++++++++++++++++++++++++++++-- src/qemu/qemu_capabilities.h | 14 ++++- src/qemu/qemu_conf.c | 86 +++++++++---------------- 4 files changed, 155 insertions(+), 65 deletions(-) -- 2.24.1

2 8

[PATCH 0/4] qemu: fix block jobs when copy_on_read is enabled
by Peter Krempa 24 Jan '20

24 Jan '20

QEMU requires us to pass the topmost node(-name) in the backing chain as the 'device' argument for the blockdev-mirror/block-commit commands. Otherwise QEMU complains: "Need a root block node" Since libvirt always puts the copy-on-read driver on top of the backing chain, blockjobs on disks which use "copy_on_read" fail. The series below fixes that by passing the proper node. This fixes it just fine for the mirror, but for block-commit we still get another error due to a bug in qemu: "'libvirt-4-format' is not in this backing file chain" Additionally one weird thing happens with block-stream (blockpull). If I pass the layer below the copy-on-read as 'device', everything works. This is kind of weird as the documentation for that is the same. If I pass the nodename of copy-on-read. Max, Kevin, could you please comment on the block-stream part and possibly also on the plans to fix the issue with block-commit? Cc: Max Reitz <mreitz(a)redhat.com> CC: Kevin Wolf <kwolf(a)redhat.com> https://bugzilla.redhat.com/show_bug.cgi?id=1792195 Peter Krempa (4): qemu: blockcopy: Actually unplug unused images when mirror job fails to start qemu: domain: Extract code to determine topmost nodename to qemuDomainDiskGetTopNodename qemu: Fix value of 'device' argument for blockdev-mirror qemu: Fix value of 'device' argument for block-commit src/qemu/qemu_domain.c | 38 ++++++++++++++++++++++++++------------ src/qemu/qemu_domain.h | 4 ++++ src/qemu/qemu_driver.c | 6 +++--- src/qemu/qemu_migration.c | 2 +- 4 files changed, 34 insertions(+), 16 deletions(-) -- 2.24.1

3 10

[PATCH] qemu: block: Don't skip creation of 'luks' formatted images
by Peter Krempa 23 Jan '20

23 Jan '20

libvirt treats 'luks' images as raw+encryption. The logic in qemuBlockStorageSourceCreateFormat skipped the creation if the requested image was raw but didn't take into account the encryption. This manifested itself e.g. when attempting to do a virsh blockcopy with the following XML: <disk type='file' device='disk'> <driver name='qemu' type='raw'/> <source file='/tmp/enccpy'> <encryption format='luks'> <secret type='passphrase' uuid='0a81f5b2-8403-7b23-c8d6-21ccc2f80d6f'/> </encryption> </source> </disk> Where qemu would report the following error: unable to execute QEMU command 'blockdev-add': Volume is not in LUKS format rather than actually formatting the image first. Signed-off-by: Peter Krempa <pkrempa(a)redhat.com> --- src/qemu/qemu_block.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/src/qemu/qemu_block.c b/src/qemu/qemu_block.c index eab21bc107..22f03da485 100644 --- a/src/qemu/qemu_block.c +++ b/src/qemu/qemu_block.c @@ -2479,7 +2479,8 @@ qemuBlockStorageSourceCreateFormat(virDomainObjPtr vm, g_autoptr(virJSONValue) createformatprops = NULL; int ret; - if (src->format == VIR_STORAGE_FILE_RAW) + if (src->format == VIR_STORAGE_FILE_RAW && + !src->encryption) return 0; if (qemuBlockStorageSourceCreateGetFormatProps(src, backingStore, -- 2.24.1

2 1

[libvirt] [PATCH 0/3] qemu: backup: Allow configuring and reading back of export an backup bitmap name
by Peter Krempa 23 Jan '20

23 Jan '20

These were already posted before. oVirt folks would like to be able to read the export and bitmap names. Given that I already wrote support for configuring it and it's rather simple I'm re-posting these as they were before. Peter Krempa (3): conf: backup: Allow configuration of names exported via NBD qemu: backup: Implement support for backup disk export name configuration qemu: backup: Implement support for backup disk bitmap name configuration docs/formatbackup.html.in | 9 +++++++++ docs/schemas/domainbackup.rng | 8 ++++++++ src/conf/backup_conf.c | 11 +++++++++++ src/conf/backup_conf.h | 2 ++ src/qemu/qemu_backup.c | 14 ++++++++++++-- .../domainbackupxml2xmlin/backup-pull-seclabel.xml | 2 +- .../backup-pull-seclabel.xml | 2 +- 7 files changed, 44 insertions(+), 4 deletions(-) -- 2.24.1

3 11

[PATCH 0/2] util: hash: Aid in debugging of duplicate keys
by Peter Krempa 23 Jan '20

23 Jan '20

See patch 1 for rationale. Peter Krempa (2): util: hash: Improve debugability of "Duplicate key" error message tests: hash: Test case for adding duplicate hash entry src/conf/domain_addr.c | 9 +++++++++ src/util/vircgroup.c | 8 ++++++++ src/util/virhash.c | 22 ++++++++++++++++++++-- src/util/virhash.h | 13 +++++++++++++ tests/virhashtest.c | 23 +++++++++++++++++++++++ 5 files changed, 73 insertions(+), 2 deletions(-) -- 2.24.1

2 4

[libvirt] [PATCH] qemu: Refuse to use "ps2" on machines that do not have this bus
by Thomas Huth 23 Jan '20

23 Jan '20

The "ps2" bus is only available on certain machines like x86. On machines like s390x, we should refuse to add a device to this bus instead of silently ignoring it. Looking at the QEMU sources, PS/2 is only available if the QEMU binary has the "i8042" device, so let's check for that and only allow "ps2" devices if this QEMU device is available, or if we're on x86 anyway (so we don't have to fake the QEMU_CAPS_DEVICE_I8042 capability in all the tests that use <input ... bus='ps2'/> in their xml data). Reported-by: Sebastian Mitterle <smitterl(a)redhat.com> Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1763191 Signed-off-by: Thomas Huth <thuth(a)redhat.com> --- src/qemu/qemu_capabilities.c | 2 ++ src/qemu/qemu_capabilities.h | 1 + src/qemu/qemu_domain.c | 10 +++++++++- tests/qemucapabilitiesdata/caps_1.5.3.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_1.6.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_1.7.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_2.1.1.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_2.10.0.ppc64.xml | 1 + tests/qemucapabilitiesdata/caps_2.10.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_2.11.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_2.12.0.ppc64.xml | 1 + tests/qemucapabilitiesdata/caps_2.12.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_2.4.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_2.5.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_2.6.0.ppc64.xml | 1 + tests/qemucapabilitiesdata/caps_2.6.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_2.7.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_2.8.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_2.9.0.ppc64.xml | 1 + tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_3.0.0.ppc64.xml | 1 + tests/qemucapabilitiesdata/caps_3.0.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_3.1.0.ppc64.xml | 1 + tests/qemucapabilitiesdata/caps_3.1.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_4.0.0.ppc64.xml | 1 + tests/qemucapabilitiesdata/caps_4.0.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_4.1.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_4.2.0.ppc64.xml | 1 + tests/qemucapabilitiesdata/caps_4.2.0.x86_64.xml | 1 + .../qemuhotplug-base-ccw-live+ccw-virtio.xml | 6 ------ ...cw-live-with-2-ccw-virtio+ccw-virtio-1-explicit.xml | 6 ------ ...ccw-live-with-2-ccw-virtio+ccw-virtio-1-reverse.xml | 6 ------ .../qemuhotplug-base-ccw-live-with-2-ccw-virtio.xml | 6 ------ ...-ccw-live-with-ccw-virtio+ccw-virtio-2-explicit.xml | 6 ------ ...plug-base-ccw-live-with-ccw-virtio+ccw-virtio-2.xml | 6 ------ .../qemuhotplug-base-ccw-live-with-ccw-virtio.xml | 6 ------ .../qemuhotplug-base-ccw-live.xml | 6 ------ 37 files changed, 38 insertions(+), 49 deletions(-) diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c index 84c62a4e28..e22ef28662 100644 --- a/src/qemu/qemu_capabilities.c +++ b/src/qemu/qemu_capabilities.c @@ -553,6 +553,7 @@ VIR_ENUM_IMPL(virQEMUCaps, "blockdev-file-dynamic-auto-read-only", "savevm-monitor-nodes", "drive-nvme", + "i8042", ); @@ -1244,6 +1245,7 @@ struct virQEMUCapsStringFlags virQEMUCapsObjectTypes[] = { { "vhost-user-vga", QEMU_CAPS_DEVICE_VHOST_USER_VGA }, { "ramfb", QEMU_CAPS_DEVICE_RAMFB }, { "max-arm-cpu", QEMU_CAPS_ARM_MAX_CPU }, + { "i8042", QEMU_CAPS_DEVICE_I8042 }, }; static struct virQEMUCapsStringFlags virQEMUCapsDevicePropsVirtioBalloon[] = { diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h index 193c19fc81..c1ce590cab 100644 --- a/src/qemu/qemu_capabilities.h +++ b/src/qemu/qemu_capabilities.h @@ -534,6 +534,7 @@ typedef enum { /* virQEMUCapsFlags grouping marker for syntax-check */ QEMU_CAPS_BLOCK_FILE_AUTO_READONLY_DYNAMIC, /* the auto-read-only property of block backends for files is dynamic */ QEMU_CAPS_SAVEVM_MONITOR_NODES, /* 'savevm' handles monitor-owned nodes properly */ QEMU_CAPS_DRIVE_NVME, /* -drive file.driver=nvme */ + QEMU_CAPS_DEVICE_I8042, /* PS/2 controller */ QEMU_CAPS_LAST /* this must always be the last item */ } virQEMUCapsFlags; diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c index a6dde15bad..ada7d9b318 100644 --- a/src/qemu/qemu_domain.c +++ b/src/qemu/qemu_domain.c @@ -8039,13 +8039,21 @@ qemuDomainDeviceDefValidateGraphics(const virDomainGraphicsDef *graphics, static int qemuDomainDeviceDefValidateInput(const virDomainInputDef *input, - const virDomainDef *def G_GNUC_UNUSED, + const virDomainDef *def, virQEMUCapsPtr qemuCaps) { const char *baseName; int cap; int ccwCap; + if (input->bus == VIR_DOMAIN_INPUT_BUS_PS2 && !ARCH_IS_X86(def->os.arch) && + !virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_I8042)) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, + _("%s is not supported by this QEMU binary"), + virDomainInputBusTypeToString(input->bus)); + return -1; + } + if (input->bus != VIR_DOMAIN_INPUT_BUS_VIRTIO) return 0; diff --git a/tests/qemucapabilitiesdata/caps_1.5.3.x86_64.xml b/tests/qemucapabilitiesdata/caps_1.5.3.x86_64.xml index f2257d6bd2..b57cb2ab59 100644 --- a/tests/qemucapabilitiesdata/caps_1.5.3.x86_64.xml +++ b/tests/qemucapabilitiesdata/caps_1.5.3.x86_64.xml @@ -84,6 +84,7 @@ <flag name='isa-serial'/> <flag name='hda-output'/> <flag name='mch'/> + <flag name='i8042'/> <version>1005003</version> <kvmVersion>0</kvmVersion> <microcodeVersion>43100245</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_1.6.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_1.6.0.x86_64.xml index 3a70ec8146..5d0a14a5db 100644 --- a/tests/qemucapabilitiesdata/caps_1.6.0.x86_64.xml +++ b/tests/qemucapabilitiesdata/caps_1.6.0.x86_64.xml @@ -89,6 +89,7 @@ <flag name='isa-serial'/> <flag name='hda-output'/> <flag name='mch'/> + <flag name='i8042'/> <version>1006000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>43100243</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_1.7.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_1.7.0.x86_64.xml index cbb29ef2de..c196fe5e45 100644 --- a/tests/qemucapabilitiesdata/caps_1.7.0.x86_64.xml +++ b/tests/qemucapabilitiesdata/caps_1.7.0.x86_64.xml @@ -91,6 +91,7 @@ <flag name='isa-serial'/> <flag name='hda-output'/> <flag name='mch'/> + <flag name='i8042'/> <version>1007000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>43100244</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_2.1.1.x86_64.xml b/tests/qemucapabilitiesdata/caps_2.1.1.x86_64.xml index a6d0981224..1edcaa4657 100644 --- a/tests/qemucapabilitiesdata/caps_2.1.1.x86_64.xml +++ b/tests/qemucapabilitiesdata/caps_2.1.1.x86_64.xml @@ -107,6 +107,7 @@ <flag name='isa-serial'/> <flag name='hda-output'/> <flag name='mch'/> + <flag name='i8042'/> <version>2001001</version> <kvmVersion>0</kvmVersion> <microcodeVersion>43100240</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_2.10.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_2.10.0.ppc64.xml index 5a57cb7760..b95a9d42ad 100644 --- a/tests/qemucapabilitiesdata/caps_2.10.0.ppc64.xml +++ b/tests/qemucapabilitiesdata/caps_2.10.0.ppc64.xml @@ -139,6 +139,7 @@ <flag name='vhost-vsock'/> <flag name='egl-headless'/> <flag name='iothread.poll-max-ns'/> + <flag name='i8042'/> <version>2010000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>42900287</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_2.10.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_2.10.0.x86_64.xml index 53872abf2f..7ebe97b6ab 100644 --- a/tests/qemucapabilitiesdata/caps_2.10.0.x86_64.xml +++ b/tests/qemucapabilitiesdata/caps_2.10.0.x86_64.xml @@ -182,6 +182,7 @@ <flag name='egl-headless'/> <flag name='iothread.poll-max-ns'/> <flag name='x86-max-cpu'/> + <flag name='i8042'/> <version>2010000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>43100287</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_2.11.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_2.11.0.x86_64.xml index f70335db8f..b8eb3abd40 100644 --- a/tests/qemucapabilitiesdata/caps_2.11.0.x86_64.xml +++ b/tests/qemucapabilitiesdata/caps_2.11.0.x86_64.xml @@ -188,6 +188,7 @@ <flag name='egl-headless'/> <flag name='iothread.poll-max-ns'/> <flag name='x86-max-cpu'/> + <flag name='i8042'/> <version>2011000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>43100288</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_2.12.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_2.12.0.ppc64.xml index 74c80d2fe9..38a3103c4a 100644 --- a/tests/qemucapabilitiesdata/caps_2.12.0.ppc64.xml +++ b/tests/qemucapabilitiesdata/caps_2.12.0.ppc64.xml @@ -153,6 +153,7 @@ <flag name='iothread.poll-max-ns'/> <flag name='memory-backend-file.align'/> <flag name='drive-nvme'/> + <flag name='i8042'/> <version>2011090</version> <kvmVersion>0</kvmVersion> <microcodeVersion>42900289</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_2.12.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_2.12.0.x86_64.xml index b51cee9f28..0c30cc75da 100644 --- a/tests/qemucapabilitiesdata/caps_2.12.0.x86_64.xml +++ b/tests/qemucapabilitiesdata/caps_2.12.0.x86_64.xml @@ -197,6 +197,7 @@ <flag name='memory-backend-file.align'/> <flag name='x86-max-cpu'/> <flag name='drive-nvme'/> + <flag name='i8042'/> <version>2011090</version> <kvmVersion>0</kvmVersion> <microcodeVersion>43100289</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_2.4.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_2.4.0.x86_64.xml index 86d85faa73..9b486effe1 100644 --- a/tests/qemucapabilitiesdata/caps_2.4.0.x86_64.xml +++ b/tests/qemucapabilitiesdata/caps_2.4.0.x86_64.xml @@ -133,6 +133,7 @@ <flag name='sdl-gl'/> <flag name='hda-output'/> <flag name='mch'/> + <flag name='i8042'/> <version>2004000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>43100242</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_2.5.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_2.5.0.x86_64.xml index b217238307..147b179fdb 100644 --- a/tests/qemucapabilitiesdata/caps_2.5.0.x86_64.xml +++ b/tests/qemucapabilitiesdata/caps_2.5.0.x86_64.xml @@ -139,6 +139,7 @@ <flag name='sdl-gl'/> <flag name='hda-output'/> <flag name='mch'/> + <flag name='i8042'/> <version>2005000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>43100243</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_2.6.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_2.6.0.ppc64.xml index 862464c2f0..deb5c28790 100644 --- a/tests/qemucapabilitiesdata/caps_2.6.0.ppc64.xml +++ b/tests/qemucapabilitiesdata/caps_2.6.0.ppc64.xml @@ -118,6 +118,7 @@ <flag name='nbd-tls'/> <flag name='sdl-gl'/> <flag name='hda-output'/> + <flag name='i8042'/> <version>2006000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>42900244</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_2.6.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_2.6.0.x86_64.xml index 6b96e37a16..fc508aba8a 100644 --- a/tests/qemucapabilitiesdata/caps_2.6.0.x86_64.xml +++ b/tests/qemucapabilitiesdata/caps_2.6.0.x86_64.xml @@ -151,6 +151,7 @@ <flag name='sdl-gl'/> <flag name='hda-output'/> <flag name='mch'/> + <flag name='i8042'/> <version>2006000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>43100244</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_2.7.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_2.7.0.x86_64.xml index bc1359b0dd..ed199057dc 100644 --- a/tests/qemucapabilitiesdata/caps_2.7.0.x86_64.xml +++ b/tests/qemucapabilitiesdata/caps_2.7.0.x86_64.xml @@ -156,6 +156,7 @@ <flag name='sdl-gl'/> <flag name='hda-output'/> <flag name='mch'/> + <flag name='i8042'/> <version>2007000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>43100245</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_2.8.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_2.8.0.x86_64.xml index c7f3be3a1b..489b67f99a 100644 --- a/tests/qemucapabilitiesdata/caps_2.8.0.x86_64.xml +++ b/tests/qemucapabilitiesdata/caps_2.8.0.x86_64.xml @@ -159,6 +159,7 @@ <flag name='hda-output'/> <flag name='vhost-vsock'/> <flag name='mch'/> + <flag name='i8042'/> <version>2008000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>43100246</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_2.9.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_2.9.0.ppc64.xml index a00d4b3d4c..3bc6ec8dab 100644 --- a/tests/qemucapabilitiesdata/caps_2.9.0.ppc64.xml +++ b/tests/qemucapabilitiesdata/caps_2.9.0.ppc64.xml @@ -131,6 +131,7 @@ <flag name='blockdev-del'/> <flag name='vhost-vsock'/> <flag name='iothread.poll-max-ns'/> + <flag name='i8042'/> <version>2009000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>42900247</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml index 3d96f5f5b3..83fc6cde97 100644 --- a/tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml +++ b/tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml @@ -176,6 +176,7 @@ <flag name='mch'/> <flag name='iothread.poll-max-ns'/> <flag name='x86-max-cpu'/> + <flag name='i8042'/> <version>2009000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>43100247</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_3.0.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_3.0.0.ppc64.xml index 3b5a021dcf..9a0b9c05c2 100644 --- a/tests/qemucapabilitiesdata/caps_3.0.0.ppc64.xml +++ b/tests/qemucapabilitiesdata/caps_3.0.0.ppc64.xml @@ -155,6 +155,7 @@ <flag name='bochs-display'/> <flag name='ramfb'/> <flag name='drive-nvme'/> + <flag name='i8042'/> <version>2012050</version> <kvmVersion>0</kvmVersion> <microcodeVersion>42900239</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_3.0.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_3.0.0.x86_64.xml index c955994ac0..9d12215600 100644 --- a/tests/qemucapabilitiesdata/caps_3.0.0.x86_64.xml +++ b/tests/qemucapabilitiesdata/caps_3.0.0.x86_64.xml @@ -202,6 +202,7 @@ <flag name='bochs-display'/> <flag name='ramfb'/> <flag name='drive-nvme'/> + <flag name='i8042'/> <version>3000000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>43100239</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_3.1.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_3.1.0.ppc64.xml index cab38d442b..2cf2e4f655 100644 --- a/tests/qemucapabilitiesdata/caps_3.1.0.ppc64.xml +++ b/tests/qemucapabilitiesdata/caps_3.1.0.ppc64.xml @@ -159,6 +159,7 @@ <flag name='overcommit'/> <flag name='bochs-display'/> <flag name='drive-nvme'/> + <flag name='i8042'/> <version>3000091</version> <kvmVersion>0</kvmVersion> <microcodeVersion>42900240</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_3.1.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_3.1.0.x86_64.xml index 3e89d7f933..5df9b5ef1b 100644 --- a/tests/qemucapabilitiesdata/caps_3.1.0.x86_64.xml +++ b/tests/qemucapabilitiesdata/caps_3.1.0.x86_64.xml @@ -205,6 +205,7 @@ <flag name='bochs-display'/> <flag name='ramfb'/> <flag name='drive-nvme'/> + <flag name='i8042'/> <version>3000092</version> <kvmVersion>0</kvmVersion> <microcodeVersion>43100240</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_4.0.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_4.0.0.ppc64.xml index 4e13888042..964f02b062 100644 --- a/tests/qemucapabilitiesdata/caps_4.0.0.ppc64.xml +++ b/tests/qemucapabilitiesdata/caps_4.0.0.ppc64.xml @@ -173,6 +173,7 @@ <flag name='migration-file-drop-cache'/> <flag name='machine.pseries.cap-ccf-assist'/> <flag name='drive-nvme'/> + <flag name='i8042'/> <version>4000000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>42900240</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_4.0.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_4.0.0.x86_64.xml index ba32d4c592..d545c3d9e8 100644 --- a/tests/qemucapabilitiesdata/caps_4.0.0.x86_64.xml +++ b/tests/qemucapabilitiesdata/caps_4.0.0.x86_64.xml @@ -210,6 +210,7 @@ <flag name='migration-file-drop-cache'/> <flag name='ramfb'/> <flag name='drive-nvme'/> + <flag name='i8042'/> <version>4000000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>43100240</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_4.1.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_4.1.0.x86_64.xml index a98945de0e..f54db10cd9 100644 --- a/tests/qemucapabilitiesdata/caps_4.1.0.x86_64.xml +++ b/tests/qemucapabilitiesdata/caps_4.1.0.x86_64.xml @@ -215,6 +215,7 @@ <flag name='ramfb'/> <flag name='blockdev-file-dynamic-auto-read-only'/> <flag name='drive-nvme'/> + <flag name='i8042'/> <version>4001000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>43100241</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_4.2.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_4.2.0.ppc64.xml index ee9fb23640..404a2a9168 100644 --- a/tests/qemucapabilitiesdata/caps_4.2.0.ppc64.xml +++ b/tests/qemucapabilitiesdata/caps_4.2.0.ppc64.xml @@ -176,6 +176,7 @@ <flag name='machine.pseries.cap-ccf-assist'/> <flag name='blockdev-file-dynamic-auto-read-only'/> <flag name='drive-nvme'/> + <flag name='i8042'/> <version>4001050</version> <kvmVersion>0</kvmVersion> <microcodeVersion>42900242</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_4.2.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_4.2.0.x86_64.xml index 4857e2f5a5..fa87b72e2b 100644 --- a/tests/qemucapabilitiesdata/caps_4.2.0.x86_64.xml +++ b/tests/qemucapabilitiesdata/caps_4.2.0.x86_64.xml @@ -218,6 +218,7 @@ <flag name='blockdev-file-dynamic-auto-read-only'/> <flag name='savevm-monitor-nodes'/> <flag name='drive-nvme'/> + <flag name='i8042'/> <version>4002000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>43100242</microcodeVersion> diff --git a/tests/qemuhotplugtestdomains/qemuhotplug-base-ccw-live+ccw-virtio.xml b/tests/qemuhotplugtestdomains/qemuhotplug-base-ccw-live+ccw-virtio.xml index f501cde333..59c969e0f2 100644 --- a/tests/qemuhotplugtestdomains/qemuhotplug-base-ccw-live+ccw-virtio.xml +++ b/tests/qemuhotplugtestdomains/qemuhotplug-base-ccw-live+ccw-virtio.xml @@ -44,12 +44,6 @@ <alias name='virtio-serial0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </controller> - <input type='mouse' bus='ps2'> - <alias name='input0'/> - </input> - <input type='keyboard' bus='ps2'> - <alias name='input1'/> - </input> <memballoon model='none'/> <panic model='s390'/> </devices> diff --git a/tests/qemuhotplugtestdomains/qemuhotplug-base-ccw-live-with-2-ccw-virtio+ccw-virtio-1-explicit.xml b/tests/qemuhotplugtestdomains/qemuhotplug-base-ccw-live-with-2-ccw-virtio+ccw-virtio-1-explicit.xml index 301658178f..d10b29be7e 100644 --- a/tests/qemuhotplugtestdomains/qemuhotplug-base-ccw-live-with-2-ccw-virtio+ccw-virtio-1-explicit.xml +++ b/tests/qemuhotplugtestdomains/qemuhotplug-base-ccw-live-with-2-ccw-virtio+ccw-virtio-1-explicit.xml @@ -54,12 +54,6 @@ <alias name='virtio-serial0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </controller> - <input type='mouse' bus='ps2'> - <alias name='input0'/> - </input> - <input type='keyboard' bus='ps2'> - <alias name='input1'/> - </input> <memballoon model='none'> <alias name='balloon0'/> </memballoon> diff --git a/tests/qemuhotplugtestdomains/qemuhotplug-base-ccw-live-with-2-ccw-virtio+ccw-virtio-1-reverse.xml b/tests/qemuhotplugtestdomains/qemuhotplug-base-ccw-live-with-2-ccw-virtio+ccw-virtio-1-reverse.xml index 223e929ad5..6eadbdcd18 100644 --- a/tests/qemuhotplugtestdomains/qemuhotplug-base-ccw-live-with-2-ccw-virtio+ccw-virtio-1-reverse.xml +++ b/tests/qemuhotplugtestdomains/qemuhotplug-base-ccw-live-with-2-ccw-virtio+ccw-virtio-1-reverse.xml @@ -54,12 +54,6 @@ <alias name='virtio-serial0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </controller> - <input type='mouse' bus='ps2'> - <alias name='input0'/> - </input> - <input type='keyboard' bus='ps2'> - <alias name='input1'/> - </input> <memballoon model='none'/> <panic model='s390'/> </devices> diff --git a/tests/qemuhotplugtestdomains/qemuhotplug-base-ccw-live-with-2-ccw-virtio.xml b/tests/qemuhotplugtestdomains/qemuhotplug-base-ccw-live-with-2-ccw-virtio.xml index c745d48558..68561b50a3 100644 --- a/tests/qemuhotplugtestdomains/qemuhotplug-base-ccw-live-with-2-ccw-virtio.xml +++ b/tests/qemuhotplugtestdomains/qemuhotplug-base-ccw-live-with-2-ccw-virtio.xml @@ -44,12 +44,6 @@ <alias name='virtio-serial0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </controller> - <input type='mouse' bus='ps2'> - <alias name='input0'/> - </input> - <input type='keyboard' bus='ps2'> - <alias name='input1'/> - </input> <memballoon model='none'/> <panic model='s390'/> </devices> diff --git a/tests/qemuhotplugtestdomains/qemuhotplug-base-ccw-live-with-ccw-virtio+ccw-virtio-2-explicit.xml b/tests/qemuhotplugtestdomains/qemuhotplug-base-ccw-live-with-ccw-virtio+ccw-virtio-2-explicit.xml index 3189294b65..0900f3c8e3 100644 --- a/tests/qemuhotplugtestdomains/qemuhotplug-base-ccw-live-with-ccw-virtio+ccw-virtio-2-explicit.xml +++ b/tests/qemuhotplugtestdomains/qemuhotplug-base-ccw-live-with-ccw-virtio+ccw-virtio-2-explicit.xml @@ -53,12 +53,6 @@ <alias name='virtio-serial0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </controller> - <input type='mouse' bus='ps2'> - <alias name='input0'/> - </input> - <input type='keyboard' bus='ps2'> - <alias name='input1'/> - </input> <memballoon model='none'/> <panic model='s390'/> </devices> diff --git a/tests/qemuhotplugtestdomains/qemuhotplug-base-ccw-live-with-ccw-virtio+ccw-virtio-2.xml b/tests/qemuhotplugtestdomains/qemuhotplug-base-ccw-live-with-ccw-virtio+ccw-virtio-2.xml index 3189294b65..0900f3c8e3 100644 --- a/tests/qemuhotplugtestdomains/qemuhotplug-base-ccw-live-with-ccw-virtio+ccw-virtio-2.xml +++ b/tests/qemuhotplugtestdomains/qemuhotplug-base-ccw-live-with-ccw-virtio+ccw-virtio-2.xml @@ -53,12 +53,6 @@ <alias name='virtio-serial0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </controller> - <input type='mouse' bus='ps2'> - <alias name='input0'/> - </input> - <input type='keyboard' bus='ps2'> - <alias name='input1'/> - </input> <memballoon model='none'/> <panic model='s390'/> </devices> diff --git a/tests/qemuhotplugtestdomains/qemuhotplug-base-ccw-live-with-ccw-virtio.xml b/tests/qemuhotplugtestdomains/qemuhotplug-base-ccw-live-with-ccw-virtio.xml index edf57fcd3f..31979c40f0 100644 --- a/tests/qemuhotplugtestdomains/qemuhotplug-base-ccw-live-with-ccw-virtio.xml +++ b/tests/qemuhotplugtestdomains/qemuhotplug-base-ccw-live-with-ccw-virtio.xml @@ -43,12 +43,6 @@ <alias name='virtio-serial0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </controller> - <input type='mouse' bus='ps2'> - <alias name='input0'/> - </input> - <input type='keyboard' bus='ps2'> - <alias name='input1'/> - </input> <memballoon model='none'/> <panic model='s390'/> </devices> diff --git a/tests/qemuhotplugtestdomains/qemuhotplug-base-ccw-live.xml b/tests/qemuhotplugtestdomains/qemuhotplug-base-ccw-live.xml index b97bba78c6..844b951940 100644 --- a/tests/qemuhotplugtestdomains/qemuhotplug-base-ccw-live.xml +++ b/tests/qemuhotplugtestdomains/qemuhotplug-base-ccw-live.xml @@ -34,12 +34,6 @@ <alias name='virtio-serial0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </controller> - <input type='mouse' bus='ps2'> - <alias name='input0'/> - </input> - <input type='keyboard' bus='ps2'> - <alias name='input1'/> - </input> <memballoon model='none'/> <panic model='s390'/> </devices> -- 2.18.1

3 3

[PATCH] qemu-nbd: Removed deprecated --partition option
by Eric Blake 23 Jan '20

23 Jan '20

The option was deprecated in 4.0.0 (commit 0ae2d546); it's now been long enough with no complaints to follow through with that process. Signed-off-by: Eric Blake <eblake(a)redhat.com> --- qemu-deprecated.texi | 49 ++++++---------- qemu-nbd.c | 133 +------------------------------------------ qemu-nbd.texi | 13 ++--- 3 files changed, 24 insertions(+), 171 deletions(-) diff --git a/qemu-deprecated.texi b/qemu-deprecated.texi index 8471eef9c22d..1b4c638db8e0 100644 --- a/qemu-deprecated.texi +++ b/qemu-deprecated.texi @@ -304,37 +304,6 @@ The above, converted to the current supported format: @section Related binaries -@subsection qemu-nbd --partition (since 4.0.0) - -The ``qemu-nbd --partition $digit'' code (also spelled @option{-P}) -can only handle MBR partitions, and has never correctly handled -logical partitions beyond partition 5. If you know the offset and -length of the partition (perhaps by using @code{sfdisk} within the -guest), you can achieve the effect of exporting just that subset of -the disk by use of the @option{--image-opts} option with a raw -blockdev using the @code{offset} and @code{size} parameters layered on -top of any other existing blockdev. For example, if partition 1 is -100MiB long starting at 1MiB, the old command: - -@code{qemu-nbd -t -P 1 -f qcow2 file.qcow2} - -can be rewritten as: - -@code{qemu-nbd -t --image-opts driver=raw,offset=1M,size=100M,file.driver=qcow2,file.backing.driver=file,file.backing.filename=file.qcow2} - -Alternatively, the @code{nbdkit} project provides a more powerful -partition filter on top of its nbd plugin, which can be used to select -an arbitrary MBR or GPT partition on top of any other full-image NBD -export. Using this to rewrite the above example results in: - -@code{qemu-nbd -t -k /tmp/sock -f qcow2 file.qcow2 &} -@code{nbdkit -f --filter=partition nbd socket=/tmp/sock partition=1} - -Note that if you are exposing the export via /dev/nbd0, it is easier -to just export the entire image and then mount only /dev/nbd0p1 than -it is to reinvoke @command{qemu-nbd -c /dev/nbd0} limited to just a -subset of the image. - @subsection qemu-img convert -n -o (since 4.2.0) All options specified in @option{-o} are image creation options, so @@ -383,3 +352,21 @@ trouble after a recent upgrade. The "autoload" parameter has been ignored since 2.12.0. All bitmaps are automatically loaded from qcow2 images. + +@section Related binaries + +@subsection qemu-nbd --partition (removed in 5.0.0) + +The ``qemu-nbd --partition $digit'' code (also spelled @option{-P}) +could only handle MBR partitions, and never correctly handled logical +partitions beyond partition 5. Exporting a partition can still be +done by utilizing the @option{--image-opts} option with a raw blockdev +using the @code{offset} and @code{size} parameters layered on top of +any other existing blockdev. For example, if partition 1 is 100MiB +long starting at 1MiB, the old command: + +@code{qemu-nbd -t -P 1 -f qcow2 file.qcow2} + +can be rewritten as: + +@code{qemu-nbd -t --image-opts driver=raw,offset=1M,size=100M,file.driver=qcow2,file.backing.driver=file,file.backing.filename=file.qcow2} diff --git a/qemu-nbd.c b/qemu-nbd.c index bc125370dd36..e6f2eb76a3f2 100644 --- a/qemu-nbd.c +++ b/qemu-nbd.c @@ -100,7 +100,6 @@ static void usage(const char *name) "\n" "Exposing part of the image:\n" " -o, --offset=OFFSET offset into the image\n" -" -P, --partition=NUM only expose partition NUM\n" " -B, --bitmap=NAME expose a persistent dirty bitmap\n" "\n" "General purpose options:\n" @@ -156,96 +155,6 @@ QEMU_COPYRIGHT "\n" , name); } -struct partition_record -{ - uint8_t bootable; - uint8_t start_head; - uint32_t start_cylinder; - uint8_t start_sector; - uint8_t system; - uint8_t end_head; - uint8_t end_cylinder; - uint8_t end_sector; - uint32_t start_sector_abs; - uint32_t nb_sectors_abs; -}; - -static void read_partition(uint8_t *p, struct partition_record *r) -{ - r->bootable = p[0]; - r->start_head = p[1]; - r->start_cylinder = p[3] | ((p[2] << 2) & 0x0300); - r->start_sector = p[2] & 0x3f; - r->system = p[4]; - r->end_head = p[5]; - r->end_cylinder = p[7] | ((p[6] << 2) & 0x300); - r->end_sector = p[6] & 0x3f; - - r->start_sector_abs = ldl_le_p(p + 8); - r->nb_sectors_abs = ldl_le_p(p + 12); -} - -static int find_partition(BlockBackend *blk, int partition, - uint64_t *offset, uint64_t *size) -{ - struct partition_record mbr[4]; - uint8_t data[MBR_SIZE]; - int i; - int ext_partnum = 4; - int ret; - - ret = blk_pread(blk, 0, data, sizeof(data)); - if (ret < 0) { - error_report("error while reading: %s", strerror(-ret)); - exit(EXIT_FAILURE); - } - - if (data[510] != 0x55 || data[511] != 0xaa) { - return -EINVAL; - } - - for (i = 0; i < 4; i++) { - read_partition(&data[446 + 16 * i], &mbr[i]); - - if (!mbr[i].system || !mbr[i].nb_sectors_abs) { - continue; - } - - if (mbr[i].system == 0xF || mbr[i].system == 0x5) { - struct partition_record ext[4]; - uint8_t data1[MBR_SIZE]; - int j; - - ret = blk_pread(blk, mbr[i].start_sector_abs * MBR_SIZE, - data1, sizeof(data1)); - if (ret < 0) { - error_report("error while reading: %s", strerror(-ret)); - exit(EXIT_FAILURE); - } - - for (j = 0; j < 4; j++) { - read_partition(&data1[446 + 16 * j], &ext[j]); - if (!ext[j].system || !ext[j].nb_sectors_abs) { - continue; - } - - if ((ext_partnum + j + 1) == partition) { - *offset = (uint64_t)ext[j].start_sector_abs << 9; - *size = (uint64_t)ext[j].nb_sectors_abs << 9; - return 0; - } - } - ext_partnum += 4; - } else if ((i + 1) == partition) { - *offset = (uint64_t)mbr[i].start_sector_abs << 9; - *size = (uint64_t)mbr[i].nb_sectors_abs << 9; - return 0; - } - } - - return -ENOENT; -} - static void termsig_handler(int signum) { atomic_cmpxchg(&state, RUNNING, TERMINATE); @@ -620,7 +529,7 @@ int main(int argc, char **argv) int64_t fd_size; QemuOpts *sn_opts = NULL; const char *sn_id_or_name = NULL; - const char *sopt = "hVb:o:p:rsnP:c:dvk:e:f:tl:x:T:D:B:L"; + const char *sopt = "hVb:o:p:rsnc:dvk:e:f:tl:x:T:D:B:L"; struct option lopt[] = { { "help", no_argument, NULL, 'h' }, { "version", no_argument, NULL, 'V' }, @@ -629,7 +538,6 @@ int main(int argc, char **argv) { "socket", required_argument, NULL, 'k' }, { "offset", required_argument, NULL, 'o' }, { "read-only", no_argument, NULL, 'r' }, - { "partition", required_argument, NULL, 'P' }, { "bitmap", required_argument, NULL, 'B' }, { "connect", required_argument, NULL, 'c' }, { "disconnect", no_argument, NULL, 'd' }, @@ -660,7 +568,6 @@ int main(int argc, char **argv) int ch; int opt_ind = 0; int flags = BDRV_O_RDWR; - int partition = 0; int ret = 0; bool seen_cache = false; bool seen_discard = false; @@ -796,15 +703,6 @@ int main(int argc, char **argv) readonly = true; flags &= ~BDRV_O_RDWR; break; - case 'P': - warn_report("The '-P' option is deprecated; use --image-opts with " - "a raw device wrapper for subset exports instead"); - if (qemu_strtoi(optarg, NULL, 0, &partition) < 0 || - partition < 1 || partition > 8) { - error_report("Invalid partition '%s'", optarg); - exit(EXIT_FAILURE); - } - break; case 'B': bitmap = optarg; break; @@ -901,7 +799,7 @@ int main(int argc, char **argv) error_report("List mode is incompatible with a file name"); exit(EXIT_FAILURE); } - if (export_name || export_description || dev_offset || partition || + if (export_name || export_description || dev_offset || device || disconnect || fmt || sn_id_or_name || bitmap || seen_aio || seen_discard || seen_cache) { error_report("List mode is incompatible with per-device settings"); @@ -1165,33 +1063,6 @@ int main(int argc, char **argv) } fd_size -= dev_offset; - if (partition) { - uint64_t limit; - - if (dev_offset) { - error_report("Cannot request partition and offset together"); - exit(EXIT_FAILURE); - } - ret = find_partition(blk, partition, &dev_offset, &limit); - if (ret < 0) { - error_report("Could not find partition %d: %s", partition, - strerror(-ret)); - exit(EXIT_FAILURE); - } - /* - * MBR partition limits are (32-bit << 9); this assert lets - * the compiler know that we can't overflow 64 bits. - */ - assert(dev_offset + limit >= dev_offset); - if (dev_offset + limit > fd_size) { - error_report("Discovered partition %d at offset %" PRIu64 - " size %" PRIu64 ", but size exceeds file length %" - PRId64, partition, dev_offset, limit, fd_size); - exit(EXIT_FAILURE); - } - fd_size = limit; - } - export = nbd_export_new(bs, dev_offset, fd_size, export_name, export_description, bitmap, readonly, shared > 1, nbd_export_closed, writethrough, NULL, diff --git a/qemu-nbd.texi b/qemu-nbd.texi index 7f55657722bd..36f4188a3f27 100644 --- a/qemu-nbd.texi +++ b/qemu-nbd.texi @@ -55,11 +55,6 @@ Force the use of the block driver for format @var{fmt} instead of auto-detecting. @item -r, --read-only Export the disk as read-only. -@item -P, --partition=@var{num} -Deprecated: Only expose MBR partition @var{num}. Understands physical -partitions 1-4 and logical partition 5. New code should instead use -@option{--image-opts} with the raw driver wrapping a subset of the -original image. @item -B, --bitmap=@var{name} If @var{filename} has a qcow2 persistent bitmap @var{name}, expose that bitmap via the ``qemu:dirty-bitmap:@var{name}'' context @@ -161,13 +156,13 @@ qemu-nbd \ --image-opts driver=raw,offset=1M,size=1M,file.driver=file,file.filename=file.raw @end example -Serve a read-only copy of just the first MBR partition of a guest -image over a Unix socket with as many as 5 simultaneous readers, with -a persistent process forked as a daemon: +Serve a read-only copy of a guest image over a Unix socket with as +many as 5 simultaneous readers, with a persistent process forked as a +daemon: @example qemu-nbd --fork --persistent --shared=5 --socket=/path/to/sock \ - --partition=1 --read-only --format=qcow2 file.qcow2 + --read-only --format=qcow2 file.qcow2 @end example Expose the guest-visible contents of a qcow2 file via a block device -- 2.24.1

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[libvirt PATCH v2] qemu: fixing auto-detecting binary in domain capabilities
by Daniel P. Berrangé 23 Jan '20

23 Jan '20

The virConnectGetDomainCapabilities API accepts either a binary path to the emulator, or desired guest arch. If guest arch is not given, then the host arch is assumed. In the case where the binary is not given, the code tried to find the emulator binary in the existing list of cached emulator capabilities. This is not valid since we switched to lazy population of the cache in: commit 3dd91af01f30c5bda6328454ef49f3afece755d6 Author: Daniel P. Berrangé <berrange(a)redhat.com> Date: Mon Dec 2 13:04:26 2019 +0000 qemu: stop creating capabilities at driver startup As a result of this change, if there are no persistent guests defined using the requested guest architecture, virConnectGetDomainCapabilities will fail to find an emulator binary. The solution is to stop relying on the cached capabilities to find the binary and instead use the same logic we use to pick default a binary per arch when populating capabilities. Tested-by: Richard W.M. Jones <rjones(a)redhat.com> Signed-off-by: Daniel P. Berrangé <berrange(a)redhat.com> --- src/qemu/qemu_capabilities.c | 45 ++++++++++++++++++------------------ 1 file changed, 22 insertions(+), 23 deletions(-) diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c index 498348ad58..14c2aa34d2 100644 --- a/src/qemu/qemu_capabilities.c +++ b/src/qemu/qemu_capabilities.c @@ -5280,10 +5280,13 @@ virQEMUCapsCacheLookupDefault(virFileCachePtr cache, const char **retMachine) { int virttype = VIR_DOMAIN_VIRT_NONE; - int arch = virArchFromHost(); + virArch hostarch = virArchFromHost(); + virArch arch = hostarch; virDomainVirtType capsType; virQEMUCapsPtr qemuCaps = NULL; virQEMUCapsPtr ret = NULL; + virArch arch_from_caps; + g_autofree char *probedbinary = NULL; if (virttypeStr && (virttype = virDomainVirtTypeFromString(virttypeStr)) < 0) { @@ -5299,31 +5302,27 @@ virQEMUCapsCacheLookupDefault(virFileCachePtr cache, goto cleanup; } - if (binary) { - virArch arch_from_caps; + if (!binary) { + probedbinary = virQEMUCapsGetDefaultEmulator(hostarch, arch); + binary = probedbinary; + } - if (!(qemuCaps = virQEMUCapsCacheLookup(cache, binary))) - goto cleanup; + if (!(qemuCaps = virQEMUCapsCacheLookup(cache, binary))) + goto cleanup; - arch_from_caps = virQEMUCapsGetArch(qemuCaps); + arch_from_caps = virQEMUCapsGetArch(qemuCaps); - if (arch_from_caps != arch && - !((ARCH_IS_X86(arch) && ARCH_IS_X86(arch_from_caps)) || - (ARCH_IS_PPC(arch) && ARCH_IS_PPC(arch_from_caps)) || - (ARCH_IS_ARM(arch) && ARCH_IS_ARM(arch_from_caps)) || - (ARCH_IS_S390(arch) && ARCH_IS_S390(arch_from_caps)))) { - virReportError(VIR_ERR_INVALID_ARG, - _("architecture from emulator '%s' doesn't " - "match given architecture '%s'"), - virArchToString(arch_from_caps), - virArchToString(arch)); - goto cleanup; - } - } else { - if (!(qemuCaps = virQEMUCapsCacheLookupByArch(cache, arch))) - goto cleanup; - - binary = virQEMUCapsGetBinary(qemuCaps); + if (arch_from_caps != arch && + !((ARCH_IS_X86(arch) && ARCH_IS_X86(arch_from_caps)) || + (ARCH_IS_PPC(arch) && ARCH_IS_PPC(arch_from_caps)) || + (ARCH_IS_ARM(arch) && ARCH_IS_ARM(arch_from_caps)) || + (ARCH_IS_S390(arch) && ARCH_IS_S390(arch_from_caps)))) { + virReportError(VIR_ERR_INVALID_ARG, + _("architecture from emulator '%s' doesn't " + "match given architecture '%s'"), + virArchToString(arch_from_caps), + virArchToString(arch)); + goto cleanup; } if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_KVM)) -- 2.23.0

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