Inheritance among CPU model is cool but it makes reviewing CPU model
definitions and comparing them to CPU models from QEMU rather hard and
unpleasant. Let's define all CPU models from scratch.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Commit id 'cd490086' added a VIR_FORCE_CLOSE of the 'sock', but it
was after the VIR_FREE() of phyp_driver, resulting in a possible/likely
NULL dereference.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Convert virPCIDriverDir to return the buffer allocated (or not) and make the
appropriate check in the caller.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Convert virPCIDriverFile to return the buffer allocated (or not) and make the
appropriate check in the caller.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Convert virPCIFile to return the buffer allocated (or not) and make the
appropriate check in the caller.
Signed-off-by: John Ferlan <jferlan@redhat.com>
So, recently I was testing the LXC driver. You know, startup some
domains. But to my surprise, I was not able to start a single one:
virsh # start --console test
error: Reconnected to the hypervisor
error: Failed to start domain test
error: internal error: guest failed to start: unexpected exit status 125
So I've start digging. It turns out, that in virExec(), when I printed
out the @cmd, I got strange values: *(cmd->outfdptr) was certainly not
valid FD number: it has random value of several millions. This
obviously made prepareStdFd(childout, STDOUT_FILENO) fail (line 611).
But outfdptr is set in virCommandSetOutputFD(). The only place within
LXC driver where the function is called is in
virLXCProcessBuildControllerCmd(). If you take a closer look at the
function it looks like this:
static virCommandPtr
virLXCProcessBuildControllerCmd(virLXCDriverPtr driver,
..
int logfd,
const char *pidfile)
{
...
virCommandSetOutputFD(cmd, &logfd);
virCommandSetErrorFD(cmd, &logfd);
...
}
Yes, you guessed it. @logfd is passed into the function by value.
However, in the function we try to get its address (an address of a
local variable) which is no longer valid once function is finished and
stack is cleaned. Therefore when cmd->outfdptr is evaluated at any
point after this function, we may get a random number, depending on
what's currently on the stack. Of course, this may work sometimes too
- it depends on the compiler how it arranges the code, when the stack
is wiped out.
In order to fix this, lets pass a pointer to @logfd instead of
figuring out (wrong) its value in a function.
The bug was introduced in e1de5521.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Using a custom device tree image may cause unexpected behavior in
architectures that use this approach to detect platform devices. Since
usually the device tree is generated by qemu and thus it's not normally
used let's taint VMs using it to make it obvious as a possible source of
problems.
Since the balloon driver does not guarantee that it returns memory to
the host, using the value in the audit message is not a good idea.
This patch removes auditing from updating the balloon size and reports
the total physical size at startup.
The code which generates paths for UNIX socket blindly used target name
without checking if it was set. Thus for the following device XML
<channel type='unix'>
<source mode='bind'/>
<target type='virtio'/>
</channel>
we would generate "/var/lib/libvirt/qemu/channel/target/NAME.(null)"
path which works but is not really correct. Let's not use the
".target_name" suffix at all if target name is not set.
https://bugzilla.redhat.com/show_bug.cgi?id=1226854
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
While CPU0 was made unpluggable in Linux a while ago it's not desirable
to unplug it since some parts of the kernel (suspend-to-ram) still
depend on it.
This patch fixes the vCPU selection code in libvirt so that it will not
be disabled.
The target type comparison in qemuDomainDetachChrDevice
used the VIR_DOMAIN_CHR_SERIAL_TARGET_TYPE enum, so virtio-serial
addresses were not freed properly for channel devices.
Call qemuDomainReleaseDeviceAddress uncoditionally and decide
based on the address type instead of the target/device types.
Also check the device type when deciding what type the address should
be. Commit 9807c47 (aiming to fix another error in address allocation)
only checked the target type, but its value is different for different
device types. This resulted in an error when trying to attach
a channel with target type 'virtio':
error: Failed to attach device from channel-file.xml
error: internal error: virtio serial device has invalid address type
Make the logic for releasing the address dependent only on
* the address type
* whether it was allocated earlier
to avoid copying the device and target type checks.
https://bugzilla.redhat.com/show_bug.cgi?id=1230039
Signed-off-by: Luyao Huang <lhuang@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
def->vcpus was never updated after successfully changing the live
vcpu count of a domain. Subsequent queries for vcpu info would
return incorrect results. E.g.:
virsh vcpucount test
maximum config 4
maximum live 4
current config 4
current live 4
virsh setvcpus test 2
virsh vcpucount test
maximum config 4
maximum live 4
current config 4
current live 4
After patch, live current config is reported correctly:
virsh vcpucount test
maximum config 4
maximum live 4
current config 4
current live 2
While fixing this, noticed that the live config was not saved
to cfg->stateDir via virDomainSaveStatus. Save the live config
and change error handling of virDomainSave{Config,Status} to
log a message via VIR_WARN, instead of failing the entire
DomainSetVcpusFlags operation.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
The libxl driver always uses virDomainObj->def when formatting
the domain XML description. Use virDomainObj->newDef when
--inactive flag is set.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
libxlDomainCreateXML() would remove a persistent domain if
libxlDomainStart() failed. Check if domain is persistent
before removing.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
When restarting libvirtd and reconnecting to running domains,
libxlReconnectDomain() would unconditionally set the domain state
to VIR_DOMAIN_RUNNING, overwriting the state maintained in
$statedir/<domname>.xml. A domain in a paused state would have
the state changed to running, even though it was actually in a
paused state.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1201760
When the domain "<on_crash>coredump-destroy</on_crash>" is set, the
domain wasn't being destroyed, rather it was being rebooted.
Add VIR_DOMAIN_LIFECYCLE_CRASH_COREDUMP_DESTROY to the list of
on_crash types that cause "-no-reboot" to be added to the qemu
command line.
Although defined the same way, fortunately there hadn't been any deviation.
Ensure any assignments to onCrash use VIR_DOMAIN_LIFECYCLE_CRASH_* defs and
not VIR_DOMAIN_LIFECYCLE_* defs
https://bugzilla.redhat.com/show_bug.cgi?id=1232606
Since an mpath pool contains all the Multipath devices on a host, allowing
more than one defined on a host at a time should be disallowed under the
policy of disallowing duplicate source pools for the host.
Adjust to docs to clarify the Multipath target path value usage for both
the storage driver (only 1 pool per host) and formatstorage references
(ignore the target element in favor of the default target mapping of
/dev/mapper).
https://bugzilla.redhat.com/show_bug.cgi?id=1230664
Per the devmapper docs, use "/dev/mapper" or "/dev/dm-n" in order to
determine if a device is under control of DM Multipath.
So add "/dev/mapper" to the virFileExists, leaving the "/dev/mpath"
as a "legacy" option since it appears for a while it was the preferred
mechanism, but is no longer maintained
https://bugzilla.redhat.com/show_bug.cgi?id=1201143
The formatdomain.html description for <disk> device 'lun' indicates that
it must be either a type 'block' or type 'network' with protocol 'iscsi';
however, we did not make that check until domain startup.
This caused issues for virt-manager which had an unexpected failure at
run time rather config time.
This patch adds a check in post part disk device checking for the specific
and supported lun types as well as adjusting the test failure to be for
parse config rather than run time.
Libvirt periodically refreshes all volumes in a storage pool, including
the volumes being cloned.
While cloning a storage volume from parent, we drop pool locks. Subsequent
volume refresh sometimes changes allocation for an ongoing copy, and leads
to corrupt images.
Fix: Introduce a shadow volume that isolates the volume object under refresh
from the base which has a copy ongoing.
Signed-off-by: Prerna Saxena <prerna@linux.vnet.ibm.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Spice events have mostly similar information present in the event JSON
but they differ in the name of the element containing the port.
The JSON event also provides connection ID which might be useful in the
future.
This patch splits up the event parser code into two functions and the
SPICE reimplements the event parsing with correct names and drops the
VNC only stuff.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1236585
https://bugzilla.redhat.com/show_bug.cgi?id=1227664
If the requested format type for the new entry in the file system pool
is a 'dir', then be sure to set the vol->type correctly as would be done
when the pool is refreshed.
Make sure we only assign the default spicevmc channel name to spicevmc
virtio channels. Caused by commits 3269ee65 and 1133ee2b, which moved
the assignment from XML parsing code to QEMU but failed to keep the
logic.
https://bugzilla.redhat.com/show_bug.cgi?id=1179680
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Proper Haswell CPU model handling is tested in several
qemuxml2argv-cpu-* which are run in a special environment. Let's remove
the CPU model from other tests to make them less fragile.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Don't listen on the admin socket in the daemon and comment out the
admin devel files out of specfile.
Library is still being compiled and installed in order to link easily
without any disturbing modifications to the daemon code.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Its only file must be included in the daemon package anyway, since the
daemon is linked with the admin library and so then it's just an empty
package until we have virt-admin binary which we can decide later on
whether to just move it to clients or create a new package for it.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
While re-reading what I wrote for commit id '785a8940e', I realized
I needed to clarify that being able to present as a 'lun', the mode
property for the pool source element needed to be "host" (or empty)
and not "direct".
It was described correctly later in the mode host description, but
this just ensures it's not missed here as well.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Also move the mention of version numbers for the various PCI
controller models up to the end of the sentence where they are first
given, to avoid confusion.
Certain PCI buses don't support hotplug, and when automatically
assigning PCI addresses for devices, libvirt is very conservative in
its assumptions about whether or not a device will need to be
hotplugged/unplugged in the future. But if the user manually assigns
an address, they likely are aware of any hotplug requirements of the
device (or at least they should be).
In short, after this patch, automatically PCI address assignment will
assume that the device must be plugged in to a hot-pluggable slot, but
manually assignment can place the device in any bus that is
compatible, regardless of whether or not it supports hotplug. If the
user makes a mistake and plugs the device into a bus that doesn't
support hotplug, then later tries to do a hot-unplug, qemu will give
an appropriate error.
(in the future we may want to add a "hotpluggable" attribute to all
devices, with default being "yes" for autoassign, and "no" for manual
assign).
When support for the pcie-root and dmi-to-pci-bridge buses on a Q35
machinetype was added, I was concerned that even though qemu at the
time allowed plugging a PCI device into a PCIe port, that it might not
be supported in the future. To prevent painful backtracking in the
possible future where this happened, I disallowed such connections
except in a few specific cases requested by qemu developers (indicated
in the code with the flag VIR_PCI_CONNECT_TYPE_EITHER_IF_CONFIG).
Now that a couple years have passed, there is a clear message from
qemu that there is no danger in allowing PCI devices to be plugged
into PCIe ports. This patch eliminates
VIR_PCI_CONNECT_TYPE_EITHER_IF_CONFIG and changes the code to always
allow PCI->PCIe or PCIe->PCI connection *when the PCI address is
specified in the config. (For newly added devices that haven't yet
been given a PCI address, the auto-placement still prefers using the
correct type of bus).
The PCI case of the switch statement in this function contains another
switch statement with a case for each model. Currently every model
except pci-root and pcie-root has a check for index > 0 (since only
those two can have index==0), and the function should never be called
for those two anyway. If we move the check for !pci[e]-root to the top
of the pci case, then we can move the check for index > 0 out of the
individual model cases. This will save repeating that check for the
three new controller models about to be added.
Instead of using qemuMonitorJSONDevGetBlockExtent (which I plan to
remove later) extract the data in place.
Additionally add a flag that will be set when the wr_highest_offset was
extracted correctly so that callers can act according to that.
The test case addition should help make sure that everything works.
