Fixes the leaking file descriptors. Does not silently ignore errors
(e.g. permission denied on /dev/cpu/0/msr if run as non-root) and
always attempt to read from /dev/kvm if /dev/cpu/0/msr failed.
'gather_msr()' returns a dictionary of values, as a later patch will
add more registers to be interrogated.
Signed-off-by: Tim Wiederhake <twiederh@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This is useful if cpuid was compiled from source in a non-standard
location.
Signed-off-by: Tim Wiederhake <twiederh@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Turn the comment on how to aquire cpuid into a runtime error message.
Use "http" instead of "https" in the URL, as the latter is broken.
Signed-off-by: Tim Wiederhake <twiederh@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Some hardware, e.g. exotic platforms or pre-production hardware, may
report wrong or random data for the cpu model name. As the name of
the created files is derived from that name, this may lead to issues.
Signed-off-by: Tim Wiederhake <twiederh@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This changes the invocation from
./cpu-gather.sh | ./cpu-parse.sh
to
./cpu-gather.py | ./cpu-parse.sh
Signed-off-by: Tim Wiederhake <twiederh@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
If the capabilities include a counter element, e.g.
<counter name='tsc' frequency='2591999000' scaling='no'/>
the XML could not be validated:
$ virsh capabilities > cap.xml
$ virsh [hypervisor-]cpu-compare cap.xml --validate
error: Failed to compare hypervisor CPU with cap.txt
error: XML document failed to validate against schema: Unable to validate doc against /usr/share/libvirt/schemas/cpu.rng
Did not expect element counter there
Signed-off-by: Tim Wiederhake <twiederh@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The duplicate had the "dies" attribute missing, causing
$ virsh capabilities > cap.xml
$ virsh [hypervisor-]cpu-compare cap.xml --validate
to fail with
error: Failed to compare hypervisor CPU with cap.xml
error: XML document failed to validate against schema: Unable to validate doc against /usr/share/libvirt/schemas/cpu.rng
Invalid attribute dies for element topology
Signed-off-by: Tim Wiederhake <twiederh@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Let us introduce the xml and reply files for QEMU 5.2.0 on s390x.
Signed-off-by: Shalini Chellathurai Saroja <shalini@linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Our parser code relies on the fact that
VIR_LXC_DOMAIN_NAMESPACE_SOURCE_NONE has value of zero and thus
uses g_new0(). But strictly speaking, this is not mandated by
the enum typedef. Fix that.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
While fixing our schema for <lxc:namespace/> I've looked into the
parser and realized it could use some treating.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
As all other free functions, NULL should be accepted. Even though
there currently is no caller that would pass NULL, there will be
in future patches.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
Since its introduction in v1.2.19-rc1~8 our schema mandates that
LXC domain namespace child elements appear either all three at
once or not at all:
<lxc:namespace>
<lxc:sharenet type='netns' value='red'/>
<lxc:shareipc type='pid' value='12345'/>
<lxc:shareuts type='name' value='container1'/>
</lxc:namespace>
This is not mandated by our parser though. Neither by code that
later uses it (virLXCProcessSetupNamespaces()). Relax the schema.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
During testing of my patch v6.10.0-rc1~221 it was found that
'ovs-vsctl get Interface $name name' or
'ovs-vsctl find Interface options:vhost-server-path=$path'
may return a string in double quotes, e.g. "vhost-user1". Later
investigation of openvswitch code showed, that early versions
(like 1.3.0) have somewhat restrictive set of safe characters
(isalpha() || '_' || '-' || '.'), which is then refined with
increasing version. For instance, version 2.11.4 has: isalnum()
|| '_' || '-' || '.'. If the string that ovs-vsctl wants to
output contains any other character it is escaped. You want to be
looking at ovsdb_atom_to_string() which handles outputting of a
single string and calls string_needs_quotes() and possibly
json_serialize_string() in openvswitch code base.
Since the interfaces are usually named "vhost-userN" we are
facing a problem where with one version we get the name in double
quotes and with another we get plain name without funny business.
Because of json involved I thought, let's make ovs-vsctl output
into JSON format and then use our JSON parser, but guess what -
ovs-vsctl ignores --format=json. But with a little help of
g_strdup_printf() it can be turned into JSON.
Fixes: e4c29e2904
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1767013
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
In v6.10.0-rc1~221 I wanted to make virNetDevOpenvswitchGetVhostuserIfname()
lookup interface name even for vhostuser interfaces with mode='server'. For
these, we are given a socket path which is then created by QEMU and to which
OpenVSwitch connects to and creates an interface. Because of this, we don't
know the name of the interface upfront (when starting QEMU) and have to use
the path to query OpenVSwitch later (using ovs-vsctl). What I intended to use
was:
ovs-vsctl --no-headings --columns=name find Interface options:vhost-server-path=$path
But what my code does is:
ovs-vsctl --no-headings --columns=name find Interface options:vhost-server-path=path
and it's all because the argument to the function is named "path"
which I then enclosed in double quotes while it should have been
used as a variable.
Fixes: e4c29e2904
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1767013
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
the lxc driver uses virNetDevGenerateName() for its veth device names
since patch 2dd0fb492, so it should be using virNetDevReserveName()
during daemon restart/reconnect to skip over the device names that are
in use.
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The comment about auto-generating names was obsoleted by recent
changes, and there was an unnecessary set of braces around a single
line conditional body.
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Since commit 282d135ddb the parser for <interface> has cleared out
any interface name from the input XML that used the macvtap/macvlan
name as a prefix. Along with that, the switch to use the new
virNetDevGenerateName() function for auto-generating macvtap/macvlan
device names (commit 9b5d741a9), has realized two facts:
1) virNetDevGenerateName() can be called with a name already filled
in, and in that case it is an effective NOP.
2) because virNetDevGenerate() will always find an unused name, there
is no need to retry device creation in a loop - if it fails the
first time, it would fail any subsequent time as well.
that, combined with the aforementioned parser change allow us to
simplify virNetDevMacVLanCreateWithVPortProfile() - we no longer need
any extra code to determine if a template "AutoName" was requested,
and don't need a separate code path for creating the device in the
case that a specific name was given in the XML - all we need to do is
log any requested name, and then call exactly the same code as we
would if no name was given.
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The lower level function virNetDevGenerateName() now understands that
a blank ifname should be replaced with a generated name based on a
template that it knows about itself - there is no need for the higher
level functions to stuff a template name ("vnet%d") into ifname.
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The FreeBSD version of virNetDevTapCreate() now calls
virNetDevGenerateName(), and virNetDevGenerateName() understands that
a blank ifname should be replaced with a generated name based on a
device-type-specific template - so there is no longer any need for the
higher level functions to stuff a template name ("vnet%d") into
ifname.
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The Linux implementation of virNetDevCreate() doesn't require a
template ifname (e.g. "vnet%d") when it is called, but just generates
a new name if ifname is empty. The FreeBSD implementation requires
that the caller actually fill in a template ifname, and will fail if
ifname is empty. Since we want to eliminate all the special code in
callers that is setting the template name, we need to make the
behavior of the FreeBSD virNetDevCreate() match the behavior of the
Linux virNetDevCreate().
The simplest way to do this is to use the new virNetDevGenerateName()
function - if ifname is empty it generates a new name with the proper
prefix, and if it's not empty, it leaves it alone.
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
In virLXCProcessSetupInterfaceTap, containerVeth needs to be freed on
failure.
Signed-off-by: Shi Lei <shi_lei@massclouds.com>
Reviewed-by: Laine Stump <laine@redhat.com>
When netlink is supported, use netlink to create veth device pair
rather than 'ip link' command.
Signed-off-by: Shi Lei <shi_lei@massclouds.com>
Reviewed-by: Laine Stump <laine@redhat.com>
It must be used when migration URI uses `unix:` transport because otherwise we
cannot just guess where to connect for disk migration.
https://bugzilla.redhat.com/show_bug.cgi?id=1638889
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Simplify virNetDevVethCreate by using common GenerateName/ReserveName
functions.
Signed-off-by: Shi Lei <shi_lei@massclouds.com>
Reviewed-by: Laine Stump <laine@redhat.com>
Simplify ReserveName/GenerateName for macvlan and macvtap by using
common functions.
Signed-off-by: Shi Lei <shi_lei@massclouds.com>
Reviewed-by: Laine Stump <laine@redhat.com>
Simplify GenerateName/ReserveName for netdevtap by using common
functions.
Signed-off-by: Shi Lei <shi_lei@massclouds.com>
Reviewed-by: Laine Stump <laine@redhat.com>
Extract ReserveName/GenerateName from netdevtap and netdevmacvlan as
common helper functions.
Signed-off-by: Shi Lei <shi_lei@massclouds.com>
Reviewed-by: Laine Stump <laine@redhat.com>
Commit 729a06c41 added code to the LXC driver (patterned after similar
code in the QEMU driver) that called
virNetDevMacVlanReserveName(net->ifname) for all type='direct'
interfaces during a libvirtd restart, to prevent other domains from
attempting to use a macvtap device name that was already in use by a
domain.
But, unlike a QEMU domain, when an LXC domain creates a macvtap
device, that device is almost immediately moved into the namespace of
the container (and it's then renamed, but that part isn't
important). Because of this, the LXC driver doesn't keep track (in
net->ifname) of the name used to create the device (as the QEMU driver
does).
The result of this is that if libvirtd is restarted while there is an
active LXC domain that has <interface type='direct'>, libvirtd will
segfault (since virNetDevMacVLanReserveName() doesn't check for a NULL
pointer).
The fix is to just not call that function in the case of the LXC
driver, since it is pointless anyway.
Fixes: 729a06c41a
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Contains changes utilizing "nosync" and "eatmydata" for speedup as well
as fixes for CentOS-8 repoid regression.
ci-commit: b098ec6631a85880f818f2dd25c437d509e53680
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Erik Skultety <eskultet@redhat.com>
In v6.8.0-27-g88957116c9 and friends I've switched the way the
default RAM is specified for QEMU (from plain -m to
memory-backend-*). This means, that even if a guest doesn't have
any NUMA nodes configured we can use memory-backend-* attributes
to translate user config requests. For instance, we can allow
memory to be shared (<access mode='shared'/> under
<memoryBacking/>). But what my original commits are missing is
allowing such configuration in our validator.
Fixes: 88957116c9
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1839034#c12
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Some functions in domain_validate.c are throwing VIR_ERR_XML_ERROR,
when in reality none of these errors are exclusive to XML parsing.
Change to VIR_ERR_CONFIG_UNSUPPORTED to be more adequate.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
All other validations from virDomainDefValidateInternal() are done
in their own functions. Take IOMMU validation out of the function
body and into its own function.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
After the move from the previous patch, these functions are now all
used in domain_validate.c and doesn't need to be public.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Moving all remaining static helpers of virDomainDeviceDefValidateInternal()
will allow the next patch to move the function itself, and
virDomainDeviceDefValidate(), to domain_validate.c.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
The next objective is to move virDomainDeviceDefValidate() to
domain_validate.c. First let's move all the static helpers.
The net device validation functions are used across multiple
drivers, so let's move them separately first.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
virDomainDefValidateInternal() helpers can now be made static again
since they're all in the same file.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Move virDomainDeviceDefValidate() and all its helper functions to
domain_validate.c.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
This patches moves the remaining static functions that
virDomainDefValidateInternal() uses to domain_validate.c. This
allows the next patch to move virDomainDefValidateInternal(),
and virDomainDefValidate(), without too much hassle.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
virDomainDefValidateAliases() is one of the static functions that
needs to be handled before moving virDomainDefValidateInternal().
Let's move all related validate functions to domain_validate.c
at the same time.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
