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There is no point in trying to fill params beyond the first error,
because when lxcDomainGetMemoryParameters returns -1 then the caller
cannot detect which values in params are valid.
The patch is based on the possiblity in the QEmu command line to
add -smbios options allowing to override the default values picked
by QEmu. We need to detect this first from QEmu help output.
If the domain is defined with smbios to be inherited from host
then we pass the values coming from the Host own SMBIOS, but
if the domain is defined with smbios to come from sysinfo, we
use the ones coming from the domain definition.
* src/qemu/qemu_conf.h: add the QEMUD_CMD_FLAG_SMBIOS_TYPE enum
value
* src/qemu/qemu_conf.c: scan the help output for the smbios support,
and if available add support based on the domain definitions,
and host data
* tests/qemuhelptest.c: add the new enum in the outputs
Move existing routines about virSysinfoDef to an util module,
add a new entry point virSysinfoRead() to read the host values
with dmidecode
* src/conf/domain_conf.c src/conf/domain_conf.h src/util/sysinfo.c
src/util/sysinfo.h: move to a new module, add virSysinfoRead()
* src/Makefile.am: handle the new module build
* src/libvirt_private.syms: new internal symbols
* include/libvirt/virterror.h src/util/virterror.c: defined a new
error code for that module
* po/POTFILES.in: add new file for translations
the element has a mode attribute allowing only 3 values:
- emulate: use the smbios emulation from the hypervisor
- host: try to use the smbios values from the node
- sysinfo: grab the values from the <sysinfo> fields
* docs/schemas/domain.rng: extend the schemas
* src/conf/domain_conf.h: add the flag to the domain config
* src/conf/domain_conf.h: parse and serialize the smbios if present
* src/conf/domain_conf.h: defines a new internal type added to the
domain structure
* src/conf/domain_conf.c: parsing and serialization of that new type
Now that the virsh parsing has been revamped, we can
implement qemu-monitor-command. This is basically the same
as it was in previous iterations, but has now been tested to
work both with the plain text monitor and the QMP monitor.
Signed-off-by: Chris Lalancette <clalance@redhat.com>
During a shutdown/restart cycle libvirtd forgot the macvtap device name that it had created on behalf of a VM so that a stale macvtap device remained on the host when the VM terminated. Libvirtd has to actively tear down a macvtap device and it uses its name for identifying which device to tear down.
The solution is to not blank out the <target dev='...'/> completely, but only blank it out on VMs that are not active. So, if a VM is active, the device name makes it into the XML and is also being parsed. If a VM is not active, the device name is discarded.
libvirtd.conf uses "libvirt" as the value of "unix_sock_group",
however, group "libvirt" may not exist on the system, in this case
the case will always fail.
As a solution, replace "libvirt" with "$USER" in "tmp.conf".
virPipeReadUntilEOF is used to read the stdout of exec'ed
and this could fail to capture the full output and read only
1024 bytes.
The problem is that this is based on a poll loop, and in the
loop we read at most 1024 bytes per file descriptor, but we also
note in the loop if poll indicates that the process won't output
more than that on that fd by setting finished[i] = 1.
The simplest way is that if we read a full buffer make sure
finished[i] is still 0 because we will need another pass in the
loop.
Commit e8066d53 broke the build with polkit0:
remote.c: In function 'remoteDispatchAuthPolkit':
remote.c:4177: error: 'rv' undeclared (first use in this function)
Add missing identifier.
The remoteIO() method has wierd calling conventions, where
it is passed a pre-allocated 'struct remote_call *' but
then free()s it itself, instead of letting the caller free().
This fixes those weird semantics
* src/remote/remote_driver.c: Sanitize semantics of remoteIO
method wrt to memory release
A couple of places in the text monitor were overwriting the
'ret' variable with a >= 0 value before success was actually
determined. So later error paths would not correctly return
the -1 value. The drive_add code was not checking for errors
like missing command
* src/qemu/qemu_monitor_text.c: Misc error handling fixes
NFS in root squash mode may prevent opening disk images to
determine backing store. Ignore errors in this scenario.
* src/security/security_selinux.c: Ignore open failures on disk
images
NFS does not support file labelling, so ignore this error
for stdin_path when on NFS.
* src/security/security_selinux.c: Ignore failures on labelling
stdin_path on NFS
* src/util/storage_file.c, src/util/storage_file.h: Refine
virStorageFileIsSharedFS() to allow it to check for a
specific FS type.
Commit 06f81c63eb attempted to make
QEMU driver ignore the failure to relabel 'stdin_path' if it was
on NFS. The actual result was that it ignores *all* failures to
label any aspect of the VM, unless stdin_path is non-NULL and
is not on NFS.
* src/qemu/qemu_driver.c: Treat all relabel failures as terminal
* src/xen/xend_internal.c (xenDaemonFormatSxpr): Hoist verify
outside of function to avoid a -Wnested-externs warning.
* src/xen/xm_internal.c (xenXMDomainConfigFormat): Likewise.
Reported by Daniel P. Berrange.
* src/xen/xen_hypervisor.c (MAX_VIRT_CPUS): Move...
* src/xen/xen_driver.h (MAX_VIRT_CPUS): ...so all xen code can see
same value.
* src/xen/xend_internal.c (sexpr_to_xend_domain_info)
(xenDaemonDomainGetVcpusFlags, xenDaemonParseSxpr)
(xenDaemonFormatSxpr): Work if MAX_VIRT_CPUS is 64 on a platform
where long is 64-bits.
* src/xen/xm_internal.c (xenXMDomainConfigParse)
(xenXMDomainConfigFormat): Likewise.
Add dump_image_format[] to qemu.conf and support compressed dump
at virsh dump. coredump compression is important for saving disk space
in an environment where multiple guests run.
In general, "disk space for dump" is specially allocated and will be
a dead space in the system. It's used only at emergency. So, it's better
to have both of save_image_format and dump_image_format. "save" is done
in scheduled manner with enough calculated disk space for it.
This code reuses some of save_image_format[] and supports the same format.
Changelog:
- modified libvirtd_qemu.aug
- modified test_libvirtd_qemu.aug
- fixed error handling of qemudSaveCompressionTypeFromString()
When we mount any cgroup without "-o devices", we will fail to start vms:
error: Failed to start domain vm1
error: Unable to deny all devices for vm1: No such file or directory
When we mount any cgroup without "-o cpu", we will fail to get schedinfo:
Scheduler : posix
error: unable to get cpu shares tunable: No such file or directory
We should only use the cgroup controllers which are mounted on host.
So I add virCgroupMounted() for qemuCgroupControllerActive()
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
This partly reverts df90ca7661.
Don't disable the VirtualBox driver when configure can't find
VBoxXPCOMC.so, rely on detection at runtime again instead.
Keep --with-vbox=/path/to/virtualbox intact, added to for:
https://bugzilla.redhat.com/show_bug.cgi?id=609185
Detection order for VBoxXPCOMC.so:
1. VBOX_APP_HOME environment variable
2. configure provided location
3. hardcoded list of known locations
4. dynamic linker search path
Also cleanup the glue code and improve error reporting.
fix warning
CC libvirt_util_la-virtaudit.lo
cc1: warnings being treated as errors
util/virtaudit.c: In function 'virAuditEncode':
util/virtaudit.c:146: error: implicit declaration of function 'virAsprintf' [-Wimplicit-function-declaration]
util/virtaudit.c:146: error: nested extern declaration of 'virAsprintf' [-Wnested-externs]
The 2nd and 3rd hunk show the only double-closed file descriptor code part that I found while trying to clean up close(). The first hunk seems a harmless cleanup in that same file.
https://bugzilla.redhat.com/show_bug.cgi?id=638285 - when migrating
a guest, it was very easy to provoke a race where an application
could query block information on a VM that had just been migrated
away. Any time qemu code obtains a job lock, it must also check
that the VM was not taken down in the time where it was waiting
for the lock.
* src/qemu/qemu_driver.c (qemudDomainSetMemory)
(qemudDomainGetInfo, qemuDomainGetBlockInfo): Check that vm still
exists after obtaining job lock, before starting monitor action.
During virtual network startup, the iptables rule that allows tftp
traffic is only added if network->def->tftproot is non-empty, but when
the virtual network is destroyed, we had been unconditionally trying
to delete the rule. This was harmless, except that it created a bogus
error message.
This patch conditionalizes the delete command in the same manner that
the insert command is already conditionalized.
Reordered the bindings into alphabetical order, added a link to
the php-libvirt source on Github, plus gave the direct package
names needed for Python usage on RHEL/Fedora, and Ubuntu.
