Implement check whether (maximum) vCPUs doesn't exceed machine
type's cpu-max settings.
On older versions of QEMU the check is disabled.
Signed-off-by: Michal Novotny <minovotn@redhat.com>
Historically security issues in libvirt have been primarily
triaged & fixed by the Red Hat libvirt members & Red Hat
security team, who then usually notify other vendors via
appropriate channels. There have been a number of times
when vendors have not been properly notified ahead of
announcement. It has also disadvantaged community members
who have to backport fixes to releases for which there are
no current libvirt stable branches.
To address this, we want to make the libvirt security process
entirely community focused / driven. To this end I have setup
a new email address "libvirt-security@redhat.com" for end
users to report bugs which have (possible) security implications.
This email addr is backed by an invitation only, private
archive, mailing list. The intent is for the list membership
to comprise a subset of the libvirt core team, along with any
vendor security team engineers who wish to participate in a
responsible disclosure process for libvirt. Members of the
list will be responsible for analysing the problem to determine
if a security issue exists and then issue fixes for all current
official stable branches & git master.
I am proposing the following libvirt core team people as
members of the security team / list (all cc'd):
Daniel Berrange (Red Hat)
Eric Blake (Red Hat)
Jiri Denemar (Red Hat)
Daniel Veillard (Red Hat)
Jim Fehlig (SUSE)
Doug Goldstein (Gentoo)
Guido Günther (Debian)
We don't have anyone from Ubuntu on the libvirt core team.
Serge Hallyn is the most frequent submitter of patches from
Ubuntu in recent history, so I'd like to invite him to join.
Alternatively, Serge, feel free to suggest someone else to
represent Ubuntu's interests.
If any other vendors/distros have security people who are
responsible for dealing with libvirt security issues, and
want to join to get early disclosure of issues, they can
suggest people. Existing security team members will vet /
approve such requests to ensure they are genuine.
Anyone on the team / list will be **required** to honour any
embargo period agreed between members for non-public issues
that are reported. The aim will be to have a maximum 2 week
embargo period in the common case, extendable to 1 month if
there is sufficient justification made. If anyone feels they
are unable to follow such an embargo process for whatever
reason, please decline membership of the security list/team.
The patch which follows puts up some docs on the website
about all of this....
Document how to report security bugs and the process that
will be used for addressing them.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
aae0fc2a92 removed the #elementsUSB anchor
but did not update the links to point to the new section #elementsHostDev.
Signed-off-by: Philipp Hahn <hahn@univention.de>
This includes adding it to the nodedev parser and formatter, docs, and
test.
An example of the new iommuGroup element that is a part of the output
from "virsh nodedev-dumpxml" (virNodeDeviceGetXMLDesc()):
<device>
<name>pci_0000_02_00_1</name>
<capability type='pci'>
...
<iommuGroup number='12'>
<address domain='0x0000' bus='0x02' slot='0x00' function='0x0'/>
<address domain='0x0000' bus='0x02' slot='0x00' function='0x1'/>
</iommuGroup>
</capability>
</device>
Somehow I put an example of a domain interface with a <vlan> element
into the network documentation.
This patch replaces that with an example of a network definition that
has a vlan element with trunk='yes', multiple tags, and even the new
nativeMode attribute. It also includes a <portgroup> that has a vlan
defined.
This patch adds functionality to allow libvirt to configure the
'native-tagged' and 'native-untagged' modes on openvswitch networks.
Signed-off-by: Laine Stump <laine@redhat.com>
All APIs that take typed parameters are only using params address in
their entry point debug messages. With the new VIR_TYPED_PARAMS_DEBUG
macro, all functions can easily log all individual typed parameters
passed to them.
Add <features> and <compat> elements to volume target XML.
<compat> is a string which for qcow2 represents the QEMU version
it should be compatible with. Valid values are 0.10 and 1.1.
1.1 is implicit if the <features> element is present, otherwise
qemu-img default is used. 0.10 can be specified to explicitly
create older images after the qemu-img default changes.
<features> contains optional features, so far
<lazy_refcounts/> is available, which enables caching of reference
counters, improving performance for snapshots.
Add new CPU features for HyperV:
vapic for virtual APIC support
spinlocks for setting spinlock support
<features>
<hyperv>
<vapic state='on'/>
<spinlocks state='on' retries='4096'/>
</hyperv>
</features>
https://bugzilla.redhat.com/show_bug.cgi?id=784836
This attribute is going to represent number of queues for
multique vhost network interface. This commit implements XML
extension part of the feature and add one test as well. For now,
we can only do xml2xml test as qemu command line generation code
is not adapted yet.
-vnc :5900,share=allow-exclusive
allows clients to ask for exclusive access which is
implemented by dropping other connections Connecting
multiple clients in parallel requires all clients asking
for a shared session (vncviewer: -shared switch)
-vnc :5900,share=force-shared
disables exclusive client access. Useful for shared
desktop sessions, where you don't want someone forgetting
specify -shared disconnect everybody else.
-vnc :5900,share=ignore
completely ignores the shared flag and allows everybody
connect unconditionally
QEMU might support more values for "-drive discard", so using Bi-state
values (on/off) for it doesn't make sense.
"on" maps to "unmap", "off" maps to "ignore":
<...>
@var{discard} is one of "ignore" (or "off") or "unmap" (or "on") and
controls whether @dfn{discard} (also known as @dfn{trim} or @dfn{unmap})
requests are ignored or passed to the filesystem. Some machine types
may not support discard requests.
</...>
The following XML configuration can be used to request all domain's
memory pages to be kept locked in host's memory (i.e., domain's memory
pages will not be swapped out):
<memoryBacking>
<locked/>
</memoryBacking>
Change the build process & driver initialization so that the
VirtualBox driver is built into libvirtd, instead of libvirt.so
This change avoids the VirtualBox GPLv2-only license causing
compatibility problems with libvirt.so which is under the
GPLv2-or-later license.
NB this change prevents use of the VirtualBox driver on the
Windows platform, until such time as libvirtd can be made
to work there.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Update the LXC driver documentation to describe the way
containers are setup by default. Also describe the common
virsh commands for managing containers and a little about
the security. Placeholders for docs about configuring
containers still to be filled in.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
QEMU introduced "discard" option for drive since commit a9384aff53,
<...>
@var{discard} is one of "ignore" (or "off") or "unmap" (or "on") and
controls whether @dfn{discard} (also known as @dfn{trim} or @dfn{unmap})
requests are ignored or passed to the filesystem. Some machine types
may not support discard requests.
</...>
This patch exposes the support in libvirt.
QEMU supported "discard" for "-drive" since v1.5.0-rc0:
% git tag --contains a9384aff53
contains
v1.5.0-rc0
v1.5.0-rc1
So this only detects the capability bit using virQEMUCapsProbeQMPCommandLine.
Adding support for new attribute 'websocket' in the '<graphics>'
element, the attribute value is the port to listen on with '-1'
meaning auto-allocation, '0' meaning no websockets.
QEMU introduced command line "-mem-merge=on|off" (defaults to on) to
enable/disable the memory merge (KSM) at guest startup. This exposes
it by new XML:
<memoryBacking>
<nosharepages/>
</memoryBacking>
The XML tag is same with what we used internally for old RHEL.
network: static route support for <network>
This patch adds the <route> subelement of <network> to define a static
route. the address and prefix (or netmask) attribute identify the
destination network, and the gateway attribute specifies the next hop
address (which must be directly reachable from the containing
<network>) which is to receive the packets destined for
"address/(prefix|netmask)".
These attributes are translated into an "ip route add" command that is
executed when the network is started. The command used is of the
following form:
ip route add <address>/<prefix> via <gateway> \
dev <virbr-bridge> proto static metric <metric>
Tests are done to validate that the input data are correct. For
example, for a static route ip definition, the address must be a
network address and not a host address. Additional checks are added
to ensure that the specified gateway is directly reachable via this
network (i.e. that the gateway IP address is in the same subnet as one
of the IP's defined for the network).
prefix='0' is supported for both family='ipv4' address='0.0.0.0'
netmask='0.0.0.0' or prefix='0', and for family='ipv6' address='::',
prefix=0', although care should be taken to not override a desired
system default route.
Anytime an attempt is made to define a static route which *exactly*
duplicates an existing static route (for example, address=::,
prefix=0, metric=1), the following error message will be sent to
syslog:
RTNETLINK answers: File exists
This can be overridden by decreasing the metric value for the route
that should be preferred, or increasing the metric for the route that
shouldn't be preferred (and is thus in place only in anticipation that
the preferred route may be removed in the future). Caution should be
used when manipulating route metrics, especially for a default route.
Note: The use of the command-line interface should be replaced by
direct use of libnl so that error conditions can be handled better. But,
that is being left as an exercise for another day.
Signed-off-by: Gene Czarcinski <gene@czarc.net>
Signed-off-by: Laine Stump <laine@laine.org>
The <filesystem> element can now accept a <driver type='nbd'/>
as an alternative to 'loop'. The benefit of NBD is support
for non-raw disk image formats.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Extend the <driver> element in filesystem devices to
allow a storage format to be set. The new attribute
uses 'format' to reflect the storage format. This is
different from the <driver> element in disk devices
which use 'type' to reflect the storage format. This
is because the 'type' attribute on filesystem devices
is already used for the driver backend, for which the
disk devices use the 'name' attribute. Arggggh.
Anyway for disks we have
<driver name="qemu" type="raw"/>
And for filesystems this change means we now have
<driver type="loop" format="raw"/>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Describe the new cgroups layout, how to customize placement
of guests and what virsh commands are used to access the
parameters.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
An example of the scsi hostdev XML:
<hostdev mode='subsystem' type='scsi'>
<source>
<adapter name='scsi_host0'/>
<address bus='0' target='0' unit='0'/>
</source>
<address type='drive' controller='0' bus='0' target='4' unit='8'/>
</hostdev>
Controller is implicitly added for scsi hostdev, though the scsi
controller's model defaults to "lsilogic", which might be not what
the user wants (same problem exists for virtio-scsi disk). It's
the existing problem, will be addressed later.
The device address must be specified manually. Later patch will let
libvirt generate it automatically.
This only introduces the generic XMLs for scsi hostdev, later patches
will add other elements, e.g. <readonly>, <shareable>.
Signed-off-by: Han Cheng <hanc.fnst@cn.fujitsu.com>
Signed-off-by: Osier Yang <jyang@redhat.com>
While reviewing proposed VIR_STRDUP conversions, I've already noticed
several places that do:
if (str && VIR_STRDUP(dest, str) < 0)
which can be simplified by allowing str to be NULL (something that
strdup() doesn't allow). Meanwhile, code that wants to ensure a
non-NULL dest regardless of the source can check for <= 0.
Also, make it part of the VIR_STRDUP contract that macro arguments
are evaluated exactly once.
* src/util/virstring.h (VIR_STRDUP, VIR_STRDUP_QUIET, VIR_STRNDUP)
(VIR_STRNDUP_QUIET): Improve contract.
* src/util/virstring.c (virStrdup, virStrndup): Change return
conventions.
* docs/hacking.html.in: Document this.
* HACKING: Regenerate.
Signed-off-by: Eric Blake <eblake@redhat.com>
VIR_APPEND_ELEMENT(array, size, elem) was not safe if the expression
for 'size' had side effects. While no one in the current code base
was trying to pass side effects, we might as well be robust and
explicitly document our intentions.
* src/util/viralloc.c (virInsertElementsN): Add special case.
* src/util/viralloc.h (VIR_APPEND_ELEMENT): Use it.
(VIR_ALLOC, VIR_ALLOC_N, VIR_REALLOC_N, VIR_EXPAND_N)
(VIR_RESIZE_N, VIR_SHRINK_N, VIR_INSERT_ELEMENT)
(VIR_DELETE_ELEMENT, VIR_ALLOC_VAR, VIR_FREE): Document
which macros are safe in the presence of side effects.
* docs/hacking.html.in: Document this.
* HACKING: Regenerate.
Signed-off-by: Eric Blake <eblake@redhat.com>
If no todo.cfg is present, make sure the stub is in HTML5
format and clearly states that the config was not available
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The Windows port page currently links to pre-built libvirt
DLLs for release 0.8.8 which are 2 years old now. Until we
can reliably produce official Windows installers, point
people to the virt-viewer MSI installers instead which
include the libvirt DLLs.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The XSL for generating the API docs was missing the HTML5
namespace declarations. The todo and hvsupport scripts were
also missing the HTML5 doctype / namespace declaration.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The code adaptation is not done right now, but in subsequent patches.
Hence I am not implementing syntax-check rule as it would break
compilation. Developers are strongly advised to use these new macros.
They are similar to VIR_ALLOC() logic: VIR_STRDUP(dst, src) returns zero
on success, -1 otherwise. In case you don't want to report OOM error,
use the _QUIET variant of a macro.
Add missing 'html:' namespace prefix to a few more XSL
rules for generating the table of contents links
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The previous commit failed to update the XSL to take account
of fact that in XHTML mode the elements need namespace
prefixes. This caused every web page to be blank!
The rule generating the HTML docs passing the --html flag
to xsltproc. This makes it use the legacy HTML parser, which
either ignores or tries to fix all sorts of broken XML tags.
There's no reason why we should be writing broken XML in
the first place, so removing --html and adding the XHTML
doctype to all files forces us to create good XML.
This adds the XHTML doc type and fixes many, many XML tag
problems it exposes.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
It's not desired to force users imagine path for a socket they
are not even supposed to connect to. On the other hand, we
already have a release where the qemu agent socket path is
exposed to XML, so we cannot silently drop it from there.
The new path is generated in form:
$LOCALSTATEDIR/lib/libvirt/qemu/channel/target/$domain.$name
for qemu system mode, and
$XDG_CONFIG_HOME/qemu/lib/channel/target/$domain.$name
for qemu session mode.
Commit cc6d19f3 added text containing "<code>snapshot<code>" to
formatsnapshot.html.in. The closing tag is missing '/' which causes
the documentation to misrender.
A domain's <interface> or <hostdev>, as well as a <network>'s
<forward>, can now have an optional <driver name='kvm|vfio'/>
element. As of this patch, there is no functionality behind this new
knob - this patch adds support to the domain and network
formatter/parser, and to the RNG and documentation.
When the backend is added, legacy KVM PCI device assignment will
continue to be used when no driver name is specified (or if <driver
name='kvm'/> is specified), but if driver name is 'vfio', the new UEFI
Secure Boot compatible VFIO device assignment will be used.
Note that the parser doesn't automatically insert the current default
value of this setting. This is done on purpose because the two
possibilities are functionally equivalent from the guest's point of
view, and we want to be able to automatically start using vfio as the
default (even for existing domains) at some time in the future. This
is similar to what was done with the "vhost" driver option in
<interface>.
For pSeries guest in QEMU, NVRAM is one kind of spapr-vio device.
Users are allowed to specify spapr-vio devices'address.
But NVRAM is not supported in libvirt. So this patch is to
add NVRAM device to allow users to specify its address.
In QEMU, NVRAM device's address is specified by
"-global spapr-nvram.reg=xxxxx".
In libvirt, XML file is defined as the following:
<nvram>
<address type='spapr-vio' reg='0x3000'/>
</nvram>
Signed-off-by: Li Zhang <zhlcindy@linux.vnet.ibm.com>
Instead of making a choice between the underscore and camelCase, this
simply changes "num_queues" into "queues", which is also consistent
with Michal's multiple queue support for interface.
It will simplify later work if the sub-drivers have dedicated
APIs / field names. ie virNetworkDriver should have
virDrvNetworkOpen and virDrvNetworkClose methods
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The driver.h struct for node devices used an inconsistent
naming scheme 'DeviceMonitor' instead of the more usual
'NodeDeviceDriver'. Fix this everywhere it has leaked
out to.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Ensure that the driver struct field names match the public
API names. For an API virXXXX we must have a driver struct
field xXXXX. ie strip the leading 'vir' and lowercase any
leading uppercase letters.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Ensure that the virDrvXXX method names exactly match
the public APIs virYYY method names. ie XXX == YYY.
Add a test case to prevent any regressions.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
http://www.uhv.edu/ac/newsletters/writing/grammartip2009.07.01.htm
(and several other sites) give hints that 'onto' is best used if
you can also add 'up' just before it and still make sense. In many
cases in the code base, we really want the two-word form, or even
a simplification to just 'on' or 'to'.
* docs/hacking.html.in: Use correct 'on to'.
* python/libvirt-override.c: Likewise.
* src/lxc/lxc_controller.c: Likewise.
* src/util/virpci.c: Likewise.
* daemon/THREADS.txt: Use simpler 'on'.
* docs/formatdomain.html.in: Better usage.
* docs/internals/rpc.html.in: Likewise.
* src/conf/domain_event.c: Likewise.
* src/rpc/virnetclient.c: Likewise.
* tests/qemumonitortestutils.c: Likewise.
* HACKING: Regenerate.
Signed-off-by: Eric Blake <eblake@redhat.com>
The rng schema for <controller> had been non-specific about which
types of controllers allowed which models, and also allowed the
num_queues attribute (since that hasn't been released yet, should we
rename it to "numQueues"?) and <master> subelement to be included for
any controller type. In reality, half of the models are allowed only
for type='scsi', and the other half only for type='usb', num_queues is
allowed only for type='scsi', and <master> only for type='usb'.
This patch makes a separate <group> for type='scsi' and type='usb',
with each group allowing only the appropriate model values, and
allowing num_queue and <master> only when appropriate.
<interleave> also hadn't been specified, forcing a specific order of
subelements, which should never be done. (Note that the <interleave>
had to surround the main element attributes that are in the <group>
subelements, due to one of the <group>s containing a subelement).
The recent qemu requires "0x" prefix for the disk wwn, this patch
changes virValidateWWN to allow the prefix, and prepend "0x" if
it's not specified. E.g.
qemu-kvm: -device scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,\
drive=drive-scsi0-0-0-0,id=scsi0-0-0-0,wwn=6000c60016ea71ad:
Property 'scsi-hd.wwn' doesn't take value '6000c60016ea71ad'
Though it's a qemu regression, but it's nice to allow the prefix,
and doesn't hurt for us to always output "0x".
Allow VMs to be placed into resource groups using the
following syntax
<resource>
<partition>/virtualmachines/production</partition>
</resource>
A resource cgroup will be backed by some hypervisor specific
functionality, such as cgroups with KVM/LXC.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Kerberos uses 'primary' or 'key' files (principals), not 'abstract
ideal' or 'rule' files (principles). Reported by Jason Meinzer.
Reflow a paragraph to fit in 80 columns in the process.
* docs/auth.html.in: Fix spelling.
The definiton of scsi adapter in storagespool.rng (sourceinfoadapter)
can be used by scsi hostdev in later patch. Move it to basictypes.rng.
PortNumber is defined in both domaincommon.rng and storagespool.rng,
simplify it by moving it to basictypes.rng.
Signed-off-by: Han Cheng <hanc.fnst@cn.fujitsu.com>
This updates the definitions and supporting structures in the XML
schema and domain configuration files.
Signed-off-by: Bogdan Purcareata <bogdan.purcareata@freescale.com>
With this patch, one can specify the disk source using libvirt
storage like:
<disk type='volume' device='disk'>
<driver name='qemu' type='raw' cache='none'/>
<source pool='default' volume='fc18.img'/>
<target dev='vdb' bus='virtio'/>
</disk>
"seclabels" and "startupPolicy" are not supported for this new
disk type ("volume"). They will be supported in later patches.
docs/formatdomain.html.in:
* Add documents for new XMLs
docs/schemas/domaincommon.rng:
* Add rng for new XMLs;
src/conf/domain_conf.h:
* New struct for 'volume' type disk source (virDomainDiskSourcePoolDef)
* Add VIR_DOMAIN_DISK_TYPE_VOLUME for enum virDomainDiskType
src/conf/domain_conf.c:
* New helper virDomainDiskSourcePoolDefParse to parse the 'volume'
type disk source.
* New helper virDomainDiskSourcePoolDefFree to free the source def
if 'volume' type disk.
tests/qemuxml2argvdata/qemuxml2argv-disk-source-pool.xml:
tests/qemuxml2xmltest.c:
* New test
node device driver names the HBA like "scsi_host5", but storage
driver uses "host5", which could make the user confused. This
changes them to be consistent. However, for back-compat reason,
adapter name like "host5" is still supported.
This introduces 4 new attributes for storage pool source adapter.
E.g.
<adapter type='fc_host' parent='scsi_host5' wwnn='20000000c9831b4b' wwpn='10000000c9831b4b'/>
Attribute 'type' can be either 'scsi_host' or 'fc_host', and defaults
to 'scsi_host' if attribute 'name' is specified. I.e. It's optional
for 'scsi_host' adapter, for back-compat reason. However, mandatory
for 'fc_host' adapter and any new future adapter types. Attribute
'parent' is to specify the parent for the fc_host adapter.
* docs/formatstorage.html.in:
- Add documents for the 4 new attrs
* docs/schemas/storagepool.rng:
- Add RNG schema
* src/conf/storage_conf.c:
- Parse and format the new XMLs
* src/conf/storage_conf.h:
- New struct virStoragePoolSourceAdapter, replace "char *adapter" with it;
- New enum virStoragePoolSourceAdapterType
* src/libvirt_private.syms:
- Export TypeToString and TypeFromString
* src/phyp/phyp_driver.c:
- Replace "adapter" with "adapter.data.name", which is member of the union
of the new struct virStoragePoolSourceAdapter now. Later patch will
add the checking, as "adapter.data.name" is only valid for "scsi_host"
adapter.
* src/storage/storage_backend_scsi.c:
- Like above
* tests/storagepoolxml2xmlin/pool-scsi-type-scsi-host.xml:
* tests/storagepoolxml2xmlin/pool-scsi-type-fc-host.xml:
- New test for 'fc_host' and "scsi_host" adapter
* tests/storagepoolxml2xmlout/pool-scsi.xml:
- Change the expected output, as the 'type' defaults to 'scsi_host' if 'name"
specified now
* tests/storagepoolxml2xmlout/pool-scsi-type-scsi-host.xml:
* tests/storagepoolxml2xmlout/pool-scsi-type-fc-host.xml:
- New test
* tests/storagepoolxml2xmltest.c:
- Include the test
This introduce a new attribute "num_queues" (same with the good name
QEMU uses) for virtio-scsi controller. An example of the XML:
<controller type='scsi' index='0' model='virtio-scsi' num_queues='8'/>
The corresponding QEMU command line:
-device virtio-scsi-pci,id=scsi0,num_queues=8,bus=pci.0,addr=0x3 \
Split the "resource" define out into multiple smaller
defines, one for each type of resource tuning parameter.
This makes the schema a bit clearer to read
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The virsh(1) man page wasn't saying anything about the 'migrateuri'
parameter other than it can be usually omitted. A patched version of
docs/migrate.html.in is taken in this patch to fix that up in the man
page.
This enrichs HBA's xml by dumping the number of max vports and
vports in use. Format is like:
<capability type='vport_ops'>
<max_vports>164</max_vports>
<vports>5</vports>
</capability>
* docs/formatnode.html.in: (Document the new XML)
* docs/schemas/nodedev.rng: (Add the schema)
* src/conf/node_device_conf.h: (New member for data.scsi_host)
* src/node_device/node_device_linux_sysfs.c: (Collect the value of
max_vports and vports)
This does nothing more than adding the new device and capability.
The device is present since QEMU 1.2.0.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
