This option allows or disallows detection of zero-writes if it is set to
"on" or "off", respectively. It can be also set to "unmap" in which
case it will try discarding that part of image based on the value of the
"discard" option.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Commit 11567cf66f introduced an include which will only work when
building with xen (particularly libxl). However, that file is supposed
to be includable from anywhere (as with other testutils* files.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Building with clang 3.8 triggers the following error:
CC virt_host_validate-virt-host-validate-qemu.o
virt-host-validate-qemu.c:36:11: error: initializing 'char *' with an expression of type 'const char *' discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
char *kvmhint = _("Check that CPU and firmware supports virtualization "
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
virt-host-validate-qemu.c:46:17: error: assigning to 'char *' from 'const char *' discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
kvmhint = _("Check that the 'kvm-intel' or 'kvm-amd' modules are "
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2 errors generated.
Fix by using 'const' for kvmhint declaration.
Populate libxl_domain_build_info struct with bios and firmware
info from virDomainLoaderDef.
Note: Currently libxl only allows specifying the type of BIOS.
For type LIBXL_BIOS_TYPE_OVMF, the firmware path is configured
when building Xen using '--with-system-ovmf='. If not specified,
LIBXL_FIRMWARE_DIR/ovmf.bin is used. In the future, Xen will
support a user-specified firmware path. See
http://lists.xenproject.org/archives/html/xen-devel/2016-03/msg01628.html
Once that work is merged into xen.git, the libvirt libxl driver
will be able to honor a user-specified path. In the meantime use
the implicit path, which is tolerable since it is advertised in
domcapabilities.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Add support to xenconfig for conversion of xl.cfg(5) bios config
to/from libvirt domXml <loader> config. SeaBIOS is the default
for HVM guests using upstream QEMU. ROMBIOS is the default when
using the old qemu-dm. This patch allows specifying OVMF as an
alternate firmware.
Example xl.cfg:
bios = "ovmf"
Example domXML:
<os>
...
<loader readonly='yes' type='pflash'>/usr/lib/xen/boot/ovmf.bin</loader>
</os>
Note that currently Xen does not support a separate nvram for
non-volatile variables.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Prefer firmwares specified via --with-loader-nvram configure
option. If none are specified, use the Xen-provided default
firmwares found in LIBXL_FIRMWARE_DIR.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
The virQEMUDriverConfig object contains lists of
loader:nvram pairs to advertise firmwares supported by
by the driver, and qemu_conf.c contains code to populate
the lists, all of which is useful for other drivers too.
To avoid code duplication, introduce a virFirmware object
to encapsulate firmware details and switch the qemu driver
to use it.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
In libxl driver we do virObjectRef in libxlDomainObjBeginJob,
If virCondWaitUntil failed, it goes to error, do virObjectUnref,
There's a chance that someone undefine the vm at the same time,
and refs unref to zero, vm is freed in libxlDomainObjBeginJob.
But the vm outside function is not Null, we do virObjectUnlock(vm).
That's how we overwrite the vm memory after it's freed. I fix it.
Signed-off-by: Wang Yufei <james.wangyufei@huawei.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
ARM/Aarch64 /proc/cpuinfo has no virtualization related flags.
Refactor the Qemu/KVM test a bit:
1) run the "for hardware virtualization" test only on plaforms with known
cpuinfo flags (x86, s390)
2) test for /dev/kvm also on platforms where no cpu flags are set
Finally Add a more generic error hint message for non-x86 plaforms
when /dev/kvm is missing.
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
In 3704b9003 ("tests: Add CPU detection tests"), a macro called
DO_TEST_CPUID_JSON is added. But it took only two arguments when QEMU
or YAJL is not set.
Fix it by adding a third argument. Shouldn't have any effect because
that macro compiles to nothing.
Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Currently, virt-login-shell is not allowed to build on Windows.
However, as it's designed around LXC, it does not make sense to
build it on anything but Linux, so make the check stricter and allow to
enable it on Linux only.
* Fix misspelt function name:
s/virHostCPUGetStatsFreebsd/virHostCPUGetStatsFreeBSD/
* Mark the first argument to virHostCPUGetInfo with ATTRIBUTE_UNUSED
as it's not actually used on non-Linux
SYSFS_SYSTEM_PATH is only defined for Linux, however it's used outside
of #ifdef __linux__ code, e.g. as the first argument to
nodeCapsInitNUMAFake().
But as this argument's value is used on Linux only, it's safe to define
SYSFS_SYSTEM_PATH to "fake" to get things built on FreeBSD.
As it turned out PrlVmDev_GetStackIndex can return negative values
without reporting an error, which is incorrect but nevertheless.
After that we feed this negative index to virIndexToDiskName,
which in turn returns NULL and we set it to virDomainDiskDef.dst.
Using virDiskNameToBusDeviceIndex with a virDomainDiskDef structure
which has NULL dst field crashes.
Fix this by returning an error in prlsdkGetDiskId in such cases.
Signed-off-by: Maxim Nestratov <mnestratov@virtuozzo.com>
The approach of subscribing on first stat API call and then waiting
for receiving of performance event from sdk to process the call originates
in times when every vz libvirt connections spawns its own sdk connection.
Thus without this waiting virsh stat call would return empty stats. Now
with single sdk connection this scheme is unnecessary complicated.
This patch subscribes to performance events on first domain appearence
and unsubscribe on its removing.
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Signed-off-by: Maxim Nestratov <mnestratov@virtuozzo.com>
../../src/conf/domain_conf.c:10949: error: declaration of 'socket'
shadows a global declaration [-Wshadow]
../../src/conf/domain_conf.c:24373: error: declaration of 'listen'
shadows a global declaration [-Wshadow]
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1298070
We have the code for attaching redirdevs for ages now.
Unfortunately, our monitor code that handles talking to the qemu
process was missing a little piece of code that actually enabled
the feature.
BTW: it really is called "type" on the monitor, even though it's
called "name" on the cmd line. Don't ask.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
In the 162efa1a commit the function was introduced, but the
commit forgot to update livirt_private.syms accordingly.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Prior to joining the namespaces of the container, move the
process into the containers' cgroups, so that the shell that
is subsequently launched is under the container resource
constraints.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Currently the shell must be looked up from the config setting in
/etc/libvirt/virt-login-shell.conf. This is inflexible if there
are containers where different users need different shells. Add
add a new 'auto-shell' config parameter which instructs us to
query the containers' /etc/passwd for the shell to be exec'd.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The virt-login-shell environment will be initialized with
an arbitrary number of environment variables determined
by the SSH daemon and PAM configuration. Most of these are
not relevant inside the container, and at best they are
noise and at worst they'll break apps. For example if
XDG_RUNTIME_DIR is leaked to the container, it'll break
any apps using it, since the directory it points to is
only visible to the host OS filesystem, not the container
FS.
Use clearenv() to blank out everything and then set known
good values for PATH, SHELL, USER, LOGNAME HOME and TERM.
Everything else is left up to the login shell to initialize.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The virDomainFree / virConnectClose methods will reset the
last error handle, so we must save the error during cleanup
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Currently the shell config file parameter must be a list
giving the shell path and args. Allow it to be a plain
string argument as well.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Currently we request a login shell by passing the -l argument
to the shell. This is either hardcoded, or required to be
specified by the user in the virt-login-shell.conf file.
The standard way for login programs to request a shell run
as a login shell is to modify the argv passed to execve()
so that argv[0] contains the relative shell filename
prefixed with a zero. eg instead of doing
const char **shellargs = ["/bin/bash", "-l", NULL];
execve(shellargs[0], shellargs, env);
We should be doing
const char **shellargs = ["-bash", NULL];
execve("/bin/bash", shellargs, env);
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The virt-login-shell program is supposed to look like a
regular shell to clients. Login services like sshd
expect the shell to accept a '-c cmdstring' argument to
specify a command to launch instead of presenting an
interactive prompt.
We can implement this by simply passing the '-c cmdstring'
data straight through to the real shell we use. This does
not open any security holes, since the command is not run
until we're inside the container namespaces. This allows
scp to work for users with virt-login-shell.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Extend the lxc-enter-namespace command so that it joins the
containers' cgroups before starting new namespaces. This
ensures that the commands run have the normal resource
limits applied
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Add the virDomainLxcEnterCGroup API to the libvirt-lxc.so
file. This method moves the calling process into the cgroups
associated with the container.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Move all APIs with a virHostMEM name prefix out into new
util/virhostmem.h & util/virhostmem.c files
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Move all APIs with a virHostCPU name prefix out into new
util/virhostcpu.h & util/virhostcpu.c files
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
In preparation for moving all the CPU related APIs out of
the nodeinfo file, give them a virHostCPU name prefix.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
In preparation for moving all the memory related APIs out of
the nodeinfo file, give them a virHostMem name prefix.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Instead of having platform specific code in nodeGetInfo to
fetch CPU topology, split it all out into a new method
nodeGetCPUInfo.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The GNULIB physmem module already provides support for
the FreeBSD platform, so there's no reason to re-implement
FreeBSD portability code in libvirt. If there are bugs in
the GNULIB code, we should fix GNULIB rather than workaround
it in libvirt.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The nodeGetInfo() method currently has its own code for getting
memory size in KB, that basically just re-invents what nodeGetMemory
already does. Remove it and just call nodeGetMemory, converting its
result from bytes to KB, allowing removal of more platform specific
conditional code.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Nearly all the methods in the nodeinfo file are given a
'const char *sysfs_prefix' parameter to override the
default sysfs path (/sys/devices/system). Every single
caller passes in NULL for this, except one use in the
unit tests. Furthermore this parameter is totally
Linux-specific, when the APIs are intended to be cross
platform portable.
This removes the sysfs_prefix parameter and instead gives
a new method linuxNodeInfoSetSysFSSystemPath for use by
the test suite.
For two of the methods this hardcodes use of the constant
SYSFS_SYSTEM_PATH, since the test suite does not need to
override the path for thos methods.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
If you want to set block device I/O tuning values that end with '_max'
and there is nothing else set, libvirt emits an error. In particular:
error: internal error: Unexpected error
That's an unknown error. That is because *_max values depend on their
respective non-_max values. QEMU even says that in the error message
sent as a response to the monitor command:
"error": {"class": "GenericError", "desc": "bps_max/iops_max require
corresponding bps/iops values"}
the problem was that we didn't know that and there was no check for it.
Adding such check makes sure that there will be less confused users.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
This new listen type is currently supported only by spice graphics.
It's introduced to make it easier and clearer specify to not listen
anywhere in order to start a guest with OpenGL support.
The old way to do this was set spice graphics autoport='no' and don't
specify any ports. The new way is to use <listen type='none'/>. In
order to be able to migrate to old libvirt the migratable XML will be
generated without the listen element and with autoport='no'. Also the
old configuration will be automatically converted to the this listen
type.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
