When qemuMonitorSetCapabilities() fails, there is no need to
call qemuMonitorClose(), because the caller will already see
the error code and tear down the entire VM. The extra call to
qemuMonitorClose resulted in a double-free due to it removing
a ref count prematurely.
* src/qemu/qemu_driver.c: Remove premature close of monitor
Regression in commit caa805ea let a lot of bad messages slip in.
* cfg.mk (msg_gen_function): Fix function name.
* src/qemu/qemu_cgroup.c (qemuRemoveCgroup): Fix fallout from
'make syntax-check'.
* src/qemu/qemu_driver.c (qemudDomainGetInfo)
(qemuDomainWaitForMigrationComplete, qemudStartVMDaemon)
(qemudDomainSaveFlag, qemudDomainAttachDevice)
(qemuDomainUpdateDeviceFlags): Likewise.
* src/qemu/qemu_hotplug.c (qemuDomainAttachHostUsbDevice)
(qemuDomainDetachPciDiskDevice, qemuDomainDetachSCSIDiskDevice):
Likewise.
When attaching device from a xml file and the device is mis-configured,
virsh gives mis-leading message "out of memory". This patch fixes this.
Signed-off-by: Eric Blake <eblake@redhat.com>
* src/qemu/qemu_command.c (qemuBuildChrChardevStr): Alter the
chardev alias.
(qemuBuildCommandLine): Output an id for the chardev counterpart.
* tests/qemuxml2argvdata/*: Update tests to match.
Reported by Daniel P. Berrange.
Steps to reproduce this bug:
1. service libvirtd start
2. virsh start <domain>
3. kill -STOP $(cat /var/run/libvirt/qemu/<domain>.pid)
4. service libvirtd restart
5. kill -9 $(cat /var/run/libvirt/qemu/<domain>.pid)
Then libvirtd will core dump or be in deadlock state.
Make sure that json is built into libvirt and the version
of qemu is newer than 0.13.0.
The reason of libvirtd cores dump is that:
We add vm->refs when we alloc the memory, and decrease it
in the function qemuHandleMonitorEOF() in other thread.
We add vm->refs in the function qemuConnectMonitor() and
decrease it when the vm is inactive.
The libvirtd will block in the function qemuMonitorSetCapabilities()
because the vm is stopped by signal SIGSTOP. Now the vm->refs is 2.
Then we kill the vm by signal SIGKILL. The function
qemuMonitorSetCapabilities() failed, and then we will decrease vm->refs
in the function qemuMonitorClose().
In another thread, mon->fd is broken and the function
qemuHandleMonitorEOF() is called.
If qemuHandleMonitorEOF() decreases vm->refs before qemuConnectMonitor()
returns, vm->refs will be decrease to 0 and the memory is freed.
We will call qemudShutdownVMDaemon() as qemuConnectMonitor() failed.
The memory has been freed, so qemudShutdownVMDaemon() is too dangerous.
We will reference NULL pointer in the function virDomainConfVMNWFilterTeardown():
=============
void
virDomainConfVMNWFilterTeardown(virDomainObjPtr vm) {
int i;
if (nwfilterDriver != NULL) {
for (i = 0; i < vm->def->nnets; i++)
virDomainConfNWFilterTeardown(vm->def->nets[i]);
}
}
============
vm->def->nnets is not 0 but vm->def->nets is NULL(We don't set vm->def->nnets
to 0 when we free vm).
We should add an extra reference of vm to avoid vm to be deleted if
qemuConnectMonitor() failed.
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
This new parameter allows user specifies where the client
cerficate, client key, CA certificate of x509 is, instead of
hardcoding it. If 'pkipath' is not specified, and the user
is not root, try to find files in $HOME/.pki/libvirt, as long
as one of client cerficate, client key, CA certificate can
not be found, use default global location (LIBVIRT_CACERT,
LIBVIRT_CLIENTCERT, LIBVIRT_CLIENTKEY, see
src/remote/remote_driver.h)
Example of use:
[root@Osier client]# virsh -c qemu+tls://10.66.93.111/system?pkipath=/tmp/pki/client
error: Cannot access CA certificate '/tmp/pki/client/cacert.pem': No such file
or directory
error: failed to connect to the hypervisor
[root@Osier client]# ls -l
total 24
-rwxrwxr-x. 1 root root 6424 Jan 24 21:35 a.out
-rw-r--r--. 1 root root 1245 Jan 23 19:04 clientcert.pem
-rw-r--r--. 1 root root 132 Jan 23 19:04 client.info
-rw-r--r--. 1 root root 1679 Jan 23 19:04 clientkey.pem
[root@Osier client]# cp /tmp/cacert.pem .
[root@Osier client]# virsh -c qemu+tls://10.66.93.111/system?pkipath=/tmp/pki/client
Welcome to virsh, the virtualization interactive terminal.
Type: 'help' for help with commands
'quit' to quit
virsh #
* src/remote/remote_driver.c: adds support for the new pkipath URI parameter
If vol->capacity is odd, the capacity will be rounded down
by devision, this patch is to round it up instead of rounding
down, to be safer in case of one writes to the volume with the
size he used to create.
- src/storage/storage_backend_logical.c: make sure size is not rounded down
If a guest image is saved in compressed format, and the restore fails
in some way after the intermediate process used to uncompress the
image has been started, but before qemu has been started to hook up to
the uncompressor, libvirt will endlessly wait for the uncompressor to
finish, but it never will because it's still waiting to have something
hooked up to drain its output.
The solution is to close the pipes on both sides of the uncompressor,
then send a SIGTERM before calling waitpid on it (only if the restore
has failed, of course).
Add a hook to the error reporting APIs to allow specific
error messages to be filtered out. Wire up libvirtd to
remove VIR_ERR_NO_DOMAIN & similar error codes from the
logs. They are still logged at DEBUG level.
* daemon/libvirtd.c: Filter VIR_ERR_NO_DOMAIN and friends
* src/libvirt_private.syms, src/util/virterror.c,
src/util/virterror_internal.h: Hook for changing error
reporting level
This reverts the additions in commit
abff683f78
taking us back to state where all errors are fully logged
in both libvirtd and normal clients.
THe intent was to stop VIR_ERR_NO_DOMAIN (No such domain
with UUID XXXX) messages from client apps polluting syslog
The change affected all error codes, but more seriously,
it also impacted errors from internal libvirtd infrastructure
For example guest autostart no longer logged errors. The
libvirtd network code no longer logged some errors. This
makes debugging incredibly hard
* daemon/libvirtd.c: Remove error log priority filter
* src/util/virterror.c, src/util/virterror_internal.h: Remove
callback for overriding log priority
This patch is a partial resolution to the following bug:
https://bugzilla.redhat.com/show_bug.cgi?id=667756
(to complete the fix, an updated selinux-policy package is required,
to add the policy that allows libvirt to set the context of a fifo,
which was previously not allowed).
Explanation : When an incoming migration is over a pipe (for example,
if the image was compressed and is being fed through gzip, or was on a
root-squash nfs server, so needed to be opened by a child process
running as a different uid), qemu cannot read it unless the selinux
context label for the pipe has been set properly.
The solution is to check the fd used as the source of the migration
just before passing it to qemu; if it's a fifo (implying that it's a
pipe), we call the newly added virSecurityManagerSetFDLabel() function
to set the context properly.
A need was found to set the SELinux context label on an open fd (a
pipe, as a matter of fact). This patch adds a function to the security
driver API that will set the label on an open fd to secdef.label. For
all drivers other than the SELinux driver, it's a NOP. For the SElinux
driver, it calls fsetfilecon().
If the return is a failure, it only returns error up to the caller if
1) the desired label is different from the existing label, 2) the
destination fd is of a type that supports setting the selinux context,
and 3) selinux is in enforcing mode. Otherwise it will return
success. This follows the pattern of the existing function
SELinuxSetFilecon().
The problem was introduced by commit 4303c91, which removed the checking
of domain state, this patch is to fix it.
Otherwise, improper error will be thrown, e.g.
error: Failed to save domain rhel6 state
error: cannot resolve symlink /var/lib/libvirt/qemu/save/rhel6.save: No such
file or directory
In QEMU, the card itself is a PCI device, but it requires a codec
(either -device hda-output or -device hda-duplex) to actually output
sound. Specifying <sound model='ich6'/> gives us -device intel-hda
-device hda-duplex I think it's important that a simple <sound model='ich6'/>
sets up a useful codec, to have consistent behavior with all other sound cards.
This is basically Dan's proposal of
<sound model='ich6'>
<codec type='output' slot='0'/>
<codec type='duplex' slot='3'/>
</sound>
without the codec bits implemented.
The important thing is to keep a consistent API here, we don't want some
<sound> devs require tweaking codecs but not others. Steps I see to
accomplishing this:
- every <sound> device has a <codec type='default'/> (unless codecs are
manually specified)
- <codec type='none'/> is required to specify 'no codecs'
- new audio settings like mic=on|off could then be exposed in
<sound> or <codec> in a consistent manner for all sound models
v2:
Use model='ich6'
v3:
Use feature detection, from eblake
Set codec id, bus, and cad values
v4:
intel-hda isn't supported if -device isn't available
v5:
Comment spelling fixes
If vnc_auto_unix_socket is enabled, any VNC devices without a hardcoded
listen or socket value will be setup to serve over a unix socket in
/var/lib/libvirt/qemu/$vmname.vnc.
We store the generated socket path in the transient VM definition at
CLI build time.
QEMU supports serving VNC over a unix domain socket rather than traditional
TCP host/port. This is specified with:
<graphics type='vnc' socket='/foo/bar/baz'/>
This provides better security access control than VNC listening on
127.0.0.1, but will cause issues with tools that rely on the lax security
(virt-manager in fedora runs as regular user by default, and wouldn't be
able to access a socket owned by 'qemu' or 'root').
Also not currently supported by any clients, though I have patches for
virt-manager, and virt-viewer should be simple to update.
v2:
schema: Make listen vs. socket a <choice>
This will allow us to record transient runtime state in vm->def, like
default VNC parameters. Accomplish this by adding an extra 'live' parameter
to SetDefTransient, with similar semantics to the 'live' flag for
AssignDef.
When restoring a saved qemu instance via JSON monitor, the vm is
left in a paused state. Turns out the 'cont' cmd was failing with
"MigrationExpected" error class and "An incoming migration is
expected before this command can be executed" error description
due to migration (restore) not yet complete.
Detect if 'cont' cmd fails with "MigrationExpecte" error class and
retry 'cont' cmd.
V2: Fix potential double-free noted by Laine Stump
Report VIR_ERR_CONFIG_UNSUPPORTED instead of VIR_ERR_INTERNAL_ERROR,
as it's valid in our domain schema, just unsupported by hypervisor
here.
* src/qemu/qemu_command.c
The code which set VNC passwords correctly had fallback for
the set_password command, but was lacking it for the
expire_password command. This made it impossible to start
a guest. It also failed to check whether QEMU was still
running after the initial 'set_password' command completed
* src/qemu/qemu_hotplug.c: Fix error handling when
password expiry fails
* src/qemu/qemu_monitor_json.c, src/qemu/qemu_monitor_text.c: Fix
return code for missing expire_password command
Avoid overwriting the real error message with a generic
OOM failure message, when machine type probe fails
* src/qemu/qemu_driver.c: Don't overwrite error
If the XML security model is NULL, it is assumed that the current
model will be used with dynamic labelling. The verify step is
meaningless and potentially crashes if dereferencing NULL
* src/security/security_manager.c: Skip NULL model on verify
The function virUnrefConnect() may call virReleaseConnect() to release
the dest connection, and the function virReleaseConnect() will call
conn->driver->close().
So the function virUnrefConnect() should be surrounded by
qemuDomainObjEnterRemoteWithDriver() and
qemuDomainObjExitRemoteWithDriver() to prevent possible deadlock between
two communicating libvirt daemons.
See commit f0c8e1cb37 for further details.
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
In some circumstances, libvirtd would issue two STOPPED events after it
stopped a domain. This was because an EOF event can arrive after a qemu
process is killed but before qemuMonitorClose() is called.
qemuHandleMonitorEOF() should ignore EOF when the domain is not running.
I wasn't able to reproduce this bug directly, only after adding an
artificial sleep() into qemudShutdownVMDaemon().
A large number of return values used 'return (0)' instead
of simply 'return 0'. Remove all these redundant brackets
so the style is consistent throughout the file
* src/libvirt.c: Remove redundant brackets
The driver table only has 10 slots, but there are potentially
11 drivers that need activating. Improve the error message
when driver registration fails
* src/libvirt.c: Increase driver table size & improve errors
The virLibConnError() function (and related ones) do not correctly
report line number info. Turn them all into macros so line numbers
are reported correctly. Drop the connection object in all of them
since it is no longer used.
Also from the virLibConnWarning() equivalents completely. Now
that the Xen driver is running 100% inside libvirtd, those
codepaths for secondary drivers cannot be reached.
* src/libvirt.c: Replace error functions with macros
* .gnulib: Update to latest, for sigpipe and sigaction modules.
* bootstrap.conf (gnulib_modules): Add siaction, sigpipe, strerror_r.
* tools/virsh.c (vshSetupSignals) [!SIGPIPE]: Delete, now that
gnulib guarantees it.
(SA_SIGINFO): Define for mingw fallback.
* src/util/virterror.c (virStrerror): Simplify, now that gnulib
guarantees the POSIX interface.
* configure.ac (AC_CHECK_FUNCS_ONCE): Drop redundant check.
(AM_PROG_CC_STDC): Move earlier, to keep autoconf happy.
The public object is called NWFilter but the corresponding private
object is called NWFilterPool. I don't see compelling reasons for this
Pool suffix. One might argue that an NWFilter is a "pool" of rules, etc.
Remove the Pool suffix from NWFilterPool. No functional change included.
Fixes regression introduced in commit 2211518, where all qemu 0.12.x
fails to start, as does qemu 0.13.x lacking the pci-assign device.
Prior to 2211518, the code was just ignoring a non-zero exit status
from the qemu child, but the virCommand code checked this to avoid
masking any other issues, which means the real bug of provoking
non-zero exit status has been latent for a longer time.
* src/qemu/qemu_capabilities.c (qemuCapsExtractVersionInfo): Check
for -device driver,? support.
(qemuCapsExtractDeviceStr): Avoid failure if all probed devices
are unsupported.
Reported by Ken Congyang.
https://bugzilla.redhat.com/show_bug.cgi?id=620363
When using -incoming stdio or -incoming exec:, qemu keeps the
stdin fd open long after the migration is complete. Not to
mention that exec:cat is horribly inefficient, by doubling the
I/O and going through a popen interface in qemu.
The new -incoming fd: of qemu 0.12.0 closes the fd after using
it, and allows us to bypass an intermediary cat process for
less I/O.
* src/qemu/qemu_command.h (qemuBuildCommandLine): Add parameter.
* src/qemu/qemu_command.c (qemuBuildCommandLine): Support
migration via fd: when possible. Consolidate migration handling
into one spot, now that it is more complex.
* src/qemu/qemu_driver.c (qemudStartVMDaemon): Update caller.
* tests/qemuxml2argvtest.c (mymain): Likewise.
* tests/qemuxml2argvdata/qemuxml2argv-restore-v2-fd.args: New file.
* tests/qemuxml2argvdata/qemuxml2argv-restore-v2-fd.xml: Likewise.
Currently, boot order can be specified per device class but there is no
way to specify exact disk/NIC device to boot from.
This patch adds <boot order='N'/> element which can be used inside
<disk/> and <interface/>. This is incompatible with the older os/boot
element. Since not all hypervisors support per-device boot
specification, new deviceboot flag is included in capabilities XML for
hypervisors which understand the new boot element. Presence of the flag
allows (but doesn't require) users to use the new style boot order
specification.
Display or set unlimited values for memory parameters. Unlimited is
represented by INT64_MAX in memory cgroup.
Signed-off-by: Nikunj A. Dadhania <nikunj@linux.vnet.ibm.com>
Reported-by: Justin Clift <jclift@redhat.com>
virLibConnError already includes __FUNCTION__ in its output, so we
were redundant. Furthermore, clang warns that __FUNCTION__ is not
a string literal (at least __FUNCTION__ will never contain %, so
it was not a security risk).
* src/datatypes.c: Replace __FUNCTION__ with a descriptive string.
This is in response to a request in:
https://bugzilla.redhat.com/show_bug.cgi?id=665293
In short, under heavy load, it's possible for qemu's networking to
lock up due to the tap device's default 1MB sndbuf being
inadequate. adding "sndbuf=0" to the qemu commandline -netdevice
option will alleviate this problem (sndbuf=0 actually sets it to
0xffffffff).
Because we must be able to explicitly specify "0" as a value, the
standard practice of "0 means not specified" won't work here. Instead,
virDomainNetDef also has a sndbuf_specified, which defaults to 0, but
is set to 1 if some value was given.
The sndbuf value is put inside a <tune> element of each <interface> in
the domain. The intent is that further tunable settings will also be
placed inside this element.
<interface type='network'>
...
<tune>
<sndbuf>0</sndbuf>
...
</tune>
</interface>
This patch is in response to
https://bugzilla.redhat.com/show_bug.cgi?id=643050
The existing libvirt support for the vhost-net backend to the virtio
network driver happens automatically - if the vhost-net device is
available, it is always enabled, otherwise the standard userland
virtio backend is used.
This patch makes it possible to force whether or not vhost-net is used
with a bit of XML. Adding a <driver> element to the interface XML, eg:
<interface type="network">
<model type="virtio"/>
<driver name="vhost"/>
will force use of vhost-net (if it's not available, the domain will
fail to start). if driver name="qemu", vhost-net will not be used even
if it is available.
If there is no <driver name='xxx'/> in the config, libvirt will revert
to the pre-existing automatic behavior - use vhost-net if it's
available, and userland backend if vhost-net isn't available.
We try to use that command first when setting a VNC/SPICE password. If
that doesn't work we fallback to the legacy VNC only password
Allow an expiry time to be set, if that doesn't work, throw an error
if they try to use SPICE.
Change since v1:
- moved qemuInitGraphicsPasswords to qemu_hotplug, renamed
to qemuDomainChangeGraphicsPasswords.
- updated what looks like a typo (that appears to work anyway) in
initial patch from Daniel:
- ret = qemuInitGraphicsPasswords(driver, vm,
- VIR_DOMAIN_GRAPHICS_TYPE_SPICE,
- &vm->def->graphics[0]->data.vnc.auth,
- driver->vncPassword);
+ ret = qemuInitGraphicsPasswords(driver, vm,
+ VIR_DOMAIN_GRAPHICS_TYPE_SPICE,
+ &vm->def->graphics[0]->data.spice.auth,
+ driver->spicePassword);
Based on patch by Daniel P. Berrange <berrange@redhat.com>.
I broke 'make check' with commit 04197350 by unconditionally
emitting 'hap=' in xen xm driver. Only emit 'hap=' if
xendConfigVersion >= 3. I've tested sending 'hap=' to a Xen 3.2
machine without support for hap setting and verified that xend
silently drops the unrecognized setting.
* src/qemu/qemu_capabilities.h (qemuCapsParseDeviceStr): New
prototype.
* src/qemu/qemu_capabilities.c (qemuCapsParsePCIDeviceStrs)
Rename and split...
(qemuCapsExtractDeviceStr, qemuCapsParseDeviceStr): ...to make it
easier to add and test device-specific checks.
(qemuCapsExtractVersionInfo): Update caller.
* tests/qemuhelptest.c (testHelpStrParsing): Also test parsing of
device-related flags.
(mymain): Update expected flags.
* tests/qemuhelpdata/qemu-0.12.1-device: New file.
* tests/qemuhelpdata/qemu-kvm-0.12.1.2-rhel60-device: New file.
* tests/qemuhelpdata/qemu-kvm-0.12.3-device: New file.
* tests/qemuhelpdata/qemu-kvm-0.13.0-device: New file.
It was awkward having only int conversion in the virStrToLong family,
but only long conversion in the virXPath family. Make both families
support both types.
* src/util/util.h (virStrToLong_l, virStrToLong_ul): New
prototypes.
* src/util/xml.h (virXPathInt, virXPathUInt): Likewise.
* src/util/util.c (virStrToLong_l, virStrToLong_ul): New
functions.
* src/util/xml.c (virXPathInt, virXPathUInt): Likewise.
* src/libvirt_private.syms (util.h, xml.h): Export them.
* src/qemu/qemu_capabilities.c (qemuCapsProbeMachineTypes)
(qemuCapsProbeCPUModels, qemuCapsParsePCIDeviceStrs)
(qemuCapsExtractVersionInfo): Use virCommand rather than virExec.
xen-unstable c/s 16931 introduced a per-domain setting for hvm
guests to enable/disable hardware assisted paging. If disabled,
software techniques such as shadow page tables are used. If enabled,
and the feature exists in underlying hardware, hardware support for
paging is used.
Xen does not provide a mechanism to discover the HAP capability, so
we advertise its availability for hvm guests on Xen >= 3.3.
xen-unstable c/s 16931 introduced a per-domain setting for hvm
guests to enable/disable hardware assisted paging. If disabled,
software techniques such as shadow page tables are used. If enabled,
and the feature exists in underlying hardware, hardware support for
paging is used.
This provides implementation for mapping HAP setting to/from
domxml/native formats in xen drivers.
Extend the virDomainFeature enumeration to include HAP (hardware
assisted paging) feature.
Hardware features such as Extended Page Table and Nested Page
Table augment hypervisor software techniques such as shadow
page table. Adding HAP to the virDomainFeature enumeration
allows users to select between hardware and software memory
management mechanisms for their guests.
Without this patch, at least tests/daemon-conf (which sticks
$builddir/src in the PATH) tries to execute the directory
$builddir/src/qemu rather than a real qemu binary.
* src/util/util.h (virFileExists): Adjust prototype.
(virFileIsExecutable): New prototype.
* src/util/util.c (virFindFileInPath): Reject non-executables and
directories. Avoid huge stack allocation.
(virFileExists): Use lighter-weight syscall.
(virFileIsExecutable): New function.
* src/libvirt_private.syms (util.h): Export new function.
When we do peer2peer migration, the dest uri is an address of the
target host as seen from the source machine. So we must specify
the ip or hostname of target host in dest uri. If we do not specify
it, report an error to the user.
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
If the emulator doesn't support SDL graphic, we should reject
the use of SDL graphic xml with error messages, but not ignore
it silently, and pretend things are fine.
"-sdl" flag was exposed explicitly by qemu since 0.10.0, more detail:
http://www.redhat.com/archives/libvir-list/2011-January/msg00442.html
And we already have capability flag "QEMUD_CMD_FLAG_0_10", which
could be used to prevent the patch affecting the older versions
of QEMU.
* src/qemu/qemu_command.c
Don't report an error when the VirtualBox registry key is missing,
as this just indicates that VirtualBox is not installed in general.
This matches the behavior of the XPCOM glue that silently ignores
a missing VBoxXPCOMC.so.
Skip IB700 when assigning PCI slots.
Note: the I6300ESB watchdog _is_ a PCI device.
To test this: I applied this patch to libvirt-0.8.3-2.fc14 (rebasing
it slightly: qemu_command.c didn't exist in that version) and
installed this on my machine, then tested that I could successfully
add an ib700 watchdog device to a guest, start the guest, and the
ib700 was available to the guest. I also added an i6300esb (PCI)
watchdog to another guest, and verified that libvirt assigned a PCI
device to it, that the guest could be started, and that i6300esb was
present in the guest.
Note that if you previously had a domain with a ib700 watchdog, it
would have had an <address type='pci' .../> clause added to it in the
libvirt configuration. This patch does not attempt to remove this.
You cannot start such a domain -- qemu gives an error if you try.
With this patch you are able to remove the bogus address element
without libvirt adding it back.
Signed-off-by: Richard W.M. Jones <rjones@redhat.com>
* src/util/network.c (virSocketAddrMask): Zero out port, so that
iptables can initialize just the netmask then call
virSocketFormatAddr without an uninitialized read in getnameinfo.
After the remote driver runs an event callback, it unconditionally disables the
loop timer, thinking it just flushed every queued event. This doesn't work
correctly though if an event is queued while a callback is running.
The events actually aren't being lost, it's just that the event loop didn't
think there was anything that needed to be dispatched. So all those 'lost
events' should actually get re-triggered if you manually kick the loop by
generating a new event (like creating a new guest).
The solution is to disable the dispatch timer _before_ we invoke any event
callbacks. Events queued while a callback is running will properly reenable the
timer.
More info at https://bugzilla.redhat.com/show_bug.cgi?id=624252
The current security driver usage requires horrible code like
if (driver->securityDriver &&
driver->securityDriver->domainSetSecurityHostdevLabel &&
driver->securityDriver->domainSetSecurityHostdevLabel(driver->securityDriver,
vm, hostdev) < 0)
This pair of checks for NULL clutters up the code, making the driver
calls 2 lines longer than they really need to be. The goal of the
patchset is to change the calling convention to simply
if (virSecurityManagerSetHostdevLabel(driver->securityDriver,
vm, hostdev) < 0)
The first check for 'driver->securityDriver' being NULL is removed
by introducing a 'no op' security driver that will always be present
if no real driver is enabled. This guarentees driver->securityDriver
!= NULL.
The second check for 'driver->securityDriver->domainSetSecurityHostdevLabel'
being non-NULL is hidden in a new abstraction called virSecurityManager.
This separates the driver callbacks, from main internal API. The addition
of a virSecurityManager object, that is separate from the virSecurityDriver
struct also allows for security drivers to carry state / configuration
information directly. Thus the DAC/Stack drivers from src/qemu which
used to pull config from 'struct qemud_driver' can now be moved into
the 'src/security' directory and store their config directly.
* src/qemu/qemu_conf.h, src/qemu/qemu_driver.c: Update to
use new virSecurityManager APIs
* src/qemu/qemu_security_dac.c, src/qemu/qemu_security_dac.h
src/qemu/qemu_security_stacked.c, src/qemu/qemu_security_stacked.h:
Move into src/security directory
* src/security/security_stack.c, src/security/security_stack.h,
src/security/security_dac.c, src/security/security_dac.h: Generic
versions of previous QEMU specific drivers
* src/security/security_apparmor.c, src/security/security_apparmor.h,
src/security/security_driver.c, src/security/security_driver.h,
src/security/security_selinux.c, src/security/security_selinux.h:
Update to take virSecurityManagerPtr object as the first param
in all callbacks
* src/security/security_nop.c, src/security/security_nop.h: Stub
implementation of all security driver APIs.
* src/security/security_manager.h, src/security/security_manager.c:
New internal API for invoking security drivers
* src/libvirt.c: Add missing debug for security APIs
If invalid type is specified, e.g.
<serial type='foo'>
<target port='0'/>
</serial>
We replace 'foo' with "null" type implicitly, without reporting an
error message to tell the user, and "start" or "edit" the domain
will be success.
It's not good to guess what the user wants, This patch is to fix
the problem.
* src/conf/domain_conf.c
Add VM name/UUID in log for domain related APIs.
Format: "dom=%p, (VM: name=%s, uuid=%s), param0=%s, param1=%s
*src/libvirt.c (introduce two macros: VIR_DOMAIN_DEBUG, and
VIR_DOMAIN_DEBUG0)
I added a host definition to a network definition:
<network>
<name>Lokal</name>
<uuid>2074f379-b82c-423f-9ada-305d8088daaa</uuid>
<bridge name='virbr1' stp='on' delay='0' />
<ip address='192.168.180.1' netmask='255.255.255.0'>
<dhcp>
<range start='192.168.180.128' end='192.168.180.254' />
<host mac='23:74:00:03:42:02' name='somevm' ip='192.168.180.10' />
</dhcp>
</ip>
</network>
But due to the wrong if-statement the argument --dhcp-hostsfile doesn't get
added to the dnsmasq command. The patch below fixes it for me.
When dynamic_ownership=0, saved images must be owned by the same uid
as is used to run the qemu process, otherwise restore won't work. To
accomplish this, qemuSecurityDACRestoreSavedStateLabel() needs to
simply return when it's called.
This fix is in response to:
https://bugzilla.redhat.com/show_bug.cgi?id=661720
Although the upper-layer code protected against it, it was possible to
call iptablesForwardMasquerade() with an IPv6 address and have it
attempt to add a rule to the MASQUERADE chain of ip6tables (which
doesn't exist).
This patch changes that function to check the protocol of the given
address, generate an error log if it's not IPv4 (AF_INET), and finally
hardcodes all the family parameters sent down to lower-level functions.
This is partially in response to
https://bugzilla.redhat.com/show_bug.cgi?id=653300
The crash in that report was coincidentally fixed when we switched
from using inet_pton() to using virSocketParseAddr(), but the absence
of an ip address in a dhcp static host definition was still silently
ignored (and that entry discarded from the saved XML). This patch
turns that into a logged failure; likewise if the entry has neither a
mac address nor a name attribute (the entry is useless without at
least one of those, plus an ip address).
Since the network name is now pulled into this function in order for
those error logs to be more informative, the other error messages in
the function have also been changed to take advantage.
While doing some testing with Qemu and creating huge logfiles I encountered the case where the VM could not start anymore due to the lseek() to the end of the Qemu VM's log file failing. The patch below fixes the problem by replacing the previously used 'int' with 'off_t'.
To reproduce this error, you could do the following:
dd if=/dev/zero of=/var/log/libvirt/qemu/<name of VM>.log bs=1024 count=$((1024*2048))
and you should get an error like this:
error: Failed to start domain <name of VM>
error: Unable to seek to -2147482651 in /var/log/libvirt/qemu/<name of VM>.log: Success
Detected on cygwin:
util/util.c: In function 'virSetUIDGID':
util/util.c:2824: warning: format '%d' expects type 'int', but argument 7 has type 'gid_t' [-Wformat]
(and three other lines)
* src/util/util.c (virSetUIDGID): Cast, as is done elsewhere in
this file, to avoid printf type mismatch warnings.
The udev driver does not update a PCI device with its SR-IOV capabilities,
when applicable, the way the hal driver does. As a result, dumping the
device's XML will not include the relevant physical or virtual function
information.
With this patch, the XML is correct:
# virsh nodedev-dumpxml pci_0000_09_00_0
<device>
<name>pci_0000_09_00_0</name>
<parent>pci_0000_00_1c_0</parent>
<driver>
<name>vxge</name>
</driver>
<capability type='pci'>
<domain>0</domain>
<bus>9</bus>
<slot>0</slot>
<function>0</function>
<product id='0x5833'>X3100 Series 10 Gigabit Ethernet PCIe</product>
<vendor id='0x17d5'>Neterion Inc.</vendor>
<capability type='virt_functions'>
<address domain='0x0000' bus='0x0a' slot='0x00' function='0x1'/>
<address domain='0x0000' bus='0x0a' slot='0x00' function='0x2'/>
<address domain='0x0000' bus='0x0a' slot='0x00' function='0x3'/>
</capability>
</capability>
</device>
# virsh nodedev-dumpxml pci_0000_0a_00_1
<device>
<name>pci_0000_0a_00_1</name>
<parent>pci_0000_00_1c_0</parent>
<driver>
<name>vxge</name>
</driver>
<capability type='pci'>
<domain>0</domain>
<bus>10</bus>
<slot>0</slot>
<function>1</function>
<product id='0x5833'>X3100 Series 10 Gigabit Ethernet PCIe</product>
<vendor id='0x17d5'>Neterion Inc.</vendor>
<capability type='phys_function'>
<address domain='0x0000' bus='0x09' slot='0x00' function='0x0'/>
</capability>
</capability>
</device>
Cc: Dave Allan <dallan@redhat.com>
Signed-off-by: Chris Wright <chrisw@redhat.com>
As pointed out in https://bugzilla.redhat.com/show_bug.cgi?id=659855#c9,
commit c3568ec2 introduced a regression where we no longer close any
fd's beyond FD_SETSIZE.
* src/util/util.c (__virExec): Continue to close fd's beyond
keepfd range.
Reported by Stefan Praszalowicz.
The original version of these functions would modify the address sent
in, meaning that the caller would usually need to copy the address
first. This change makes the original a const, and puts the resulting
masked address into a new arg (which could point to the same
virSocketAddr as the original, if the caller really wants to modify
it).
This also makes the API consistent with virSocketAddrBroadcast[ByPrefix].
Previously we used ioctl() to set the IP address and netmask of the
bridges used for virtual networks, and apparently the SIOCSIFNETMASK
ioctl implicitly set the broadcast address for the interface. The new
method of using the "ip" command requires broadcast address to be
explicitly specified though.
These functions work only for IPv4, becasue IPv6 doesn't have the same
concept of "broadcast address" as IPv4. They merely OR the inverse of
the netmask with the given host address, thus turning on all the host
bits.
Add vboxArrayGetWithUintArg to handle new signature variations. Also
refactor vboxArrayGet* implementation to use a common helper function.
Deal with the incompatible changes in the VirtualBox 4.0 API. This
includes major changes in virtual machine and storage medium lookup,
in RDP server property handling, in session/lock handling and other
minor areas.
VirtualBox 4.0 also dropped the old event API and replaced it with a
completely new one. This is not fixed yet and will be addressed in
another patch. Therefore, currently the domain events are supported
for VirtualBox 3.x only.
Based on initial work from Jean-Baptiste Rouault.
On Windows IID's are represented as GUID by value, instead of nsID
by reference on non-Windows platforms.
Patch the vbox_CAPI_v2_2.h header to deal with this difference.
Rewrite vboxIID abstraction that deals with the different IID
representations. Add support for the GUID representation. Also unify
the four context dependent free functions for vboxIIDs
vboxIIDUnalloc, vboxIIDFree, vboxIIDUtf8Free, vboxIIDUtf16Free
into vboxIIDUnalloc that is now safe to be called (even multiple
times) on a vboxIID independent of the source and context of the
vboxIID.
The new vboxIID is designed to be used as a stack allocated variable.
It has a value member that represents the actual IID value.
This patch fixes https://bugzilla.redhat.com/show_bug.cgi?id=664406
If qemu is run as a different uid, it has been unable to access mode
0660 files that are owned by a different user, but with a group that
the qemu is a member of (aside from the one group listed in the passwd
file), because initgroups() is not being called prior to the
exec. initgroups will change the group membership of the process (and
its children) to match the new uid.
To make this happen, the setregid()/setreuid() code in
qemuSecurityDACSetProcessLabel has been replaced with a call to
virSetUIDGID(), which does both of those, plus calls initgroups.
Similar, but not identical, code in qemudOpenAsUID() has been replaced
with virSetUIDGID(). This not only consolidates the functionality to a
single location, but also potentially fixes some as-yet unreported
bugs.
virSetUIDGID() sets both the real and effective group and user of the
process, and additionally calls initgroups() to assure that the
process joins all the auxiliary groups that the given uid is a member
of.
There are cases when we want log an error message, and possibly free
some memory as part of the cleanup, while still preserving errno for a
caller, but the functions that log errors, and virFree (VIR_FREE) make
system calls that will clear errno. This patch preserves errno during
those most basic functions (corresponding to virReportSystemError(),
virReportOOMError(), networkReportError(), etc, as well as
virStrError()). It does *not preserve errno across calls to higher
level items such as virDispatchError(), as it's assumed the caller is
all finished with any need for errno by the time it dispatches the
error.
Running an instance of the router advertisement daemon (radvd) allows
guests using the virtual network to automatically acquire an IPv6
address and default route. Note that acquiring an address only works
for networks with a prefix length of exactly 64 - radvd is still run
in other circumstances, and still advertises routes, but autoconf will
not work because it requires exactly 64 bits of address info from the
network prefix.
This patch avoids a race condition with the pidfile by manually
daemonizing radvd rather than allowing it to daemonize itself, then
creating our own pidfile (in addition to radvd's own file, which is
unnecessary, but there is no way to tell radvd to not create it). This
is accomplished by exec'ing it with "--debug 1" in the commandline,
and using virCommand's features to fork, create a pidfile, and detach
from the newly forked process.
At this point everything is already in place to make IPv6 happen, we just
need to add a few rules, remove some checks for IPv4-only, and document
the changes to the XML on the website.
All of the iptables functions eventually call down to a single
bottom-level function, and fortunately, ip6tables syntax (for all the
args that we use) is identical to iptables format (except the
addresses), so all we need to do is:
1) Get an address family down to the lowest level function in each
case, either implied through an address, or explicitly when no
address is in the parameter list, and
2) At the lowest level, just decide whether to call "iptables" or
"ip6tables" based on the family.
The location of the ip6tables binary is determined at build time by
autoconf. If a particular target system happens to not have ip6tables
installed, any attempts to run it will generate an error, but that
won't happen unless someone tries to define an IPv6 address for a
network. This is identical behavior to IPv4 addresses and iptables.
This patch reorganizes the code in bridge_driver.c to account for the
concept of a single network with multiple IP addresses, without adding
in the extra variable of IPv6. A small bit of code has been
temporarily added that checks all given addresses to verify they are
IPv4 - this will be removed when full IPv6 support is turned on.
This commit adds support for IPv6 parsing and formatting to the
virtual network XML parser, including moving around data definitions
to allow for multiple <ip> elements on a single network, but only
changes the consumers of this API to accommodate for the changes in
API/structure, not to add any actual IPv6 functionality. That will
come in a later patch - this patch attempts to maintain the same final
functionality in both drivers that use the network XML parser - vbox
and "bridge" (the Linux bridge-based driver used by the qemu
hypervisor driver).
* src/libvirt_private.syms: Add new private API functions.
* src/conf/network_conf.[ch]: Change C data structure and
parsing/formatting.
* src/network/bridge_driver.c: Update to use new parser/formatter.
* src/vbox/vbox_tmpl.c: update to use new parser/formatter
* docs/schemas/network.rng: changes to the schema -
* there can now be more than one <ip> element.
* ip address is now an ip-addr (ipv4 or ipv6) rather than ipv4-addr
* new optional "prefix" attribute that can be used in place of "netmask"
* new optional "family" attribute - "ipv4" or "ipv6"
(will default to ipv4)
* define data types for the above
* tests/networkxml2xml(in|out)/nat-network.xml: add multiple <ip> elements
(including IPv6) to a single network definition to verify they are being
correctly parsed and formatted.
brSetInetAddress can only set a single IP address on the bridge, and
uses a method (ioctl(SIOCSETIFADDR)) that only works for IPv4. Replace
it and brSetInetNetmask with a single function that uses the external
"ip addr add" command to add an address/prefix to the interface - this
supports IPv6, and allows adding multiple addresses to the interface.
Although it isn't currently used in the code, we also add a
brDelInetAddress for completeness' sake.
Also, while we're modifying bridge.c, we change brSetForwardDelay and
brSetEnableSTP to use the new virCommand API rather than the
deprecated virRun, and also log an error message in bridge_driver.c if
either of those fail (previously the failure would be completely
silent).
When a netmask isn't specified for an IPv4 address, one can be implied
based on what network class range the address is in. The
virNetworkDefPrefix function does this for us, so netmask isn't
required.
IPv6 will use prefix exclusively, and IPv4 will also optionally be
able to use it, and the iptables functions really need a prefix
anyway, so use the new virNetworkDefPrefix() function to send prefixes
into iptables functions instead of netmasks.
Also, in a couple places where a netmask is actually needed, use the
new private API function for it rather than getting it directly. This
will allow for cases where no netmask or prefix is specified (it
returns the default for the current class of network.)
Some functions in this file were returning 1 on success and 0 on
failure, and others were returning 0 on success and -1 on
failure. Switch them all to return the libvirt-preferred 0/-1.
The functions in iptables.c all return -1 on failure, but all their
callers (which all happen to be in bridge_driver.c) assume that they
are returning an errno, and the logging is done accordingly. This
patch fixes all the error checking and logging to assume < 0 is an
error, and nothing else.
Later patches will add the possibility to define a network's netmask
as a prefix (0-32, or 0-128 in the case of IPv6). To make it easier to
deal with definition of both kinds (prefix or netmask), add two new
functions:
virNetworkDefNetmask: return a copy of the netmask into a
virSocketAddr. If no netmask was specified in the XML, create a
default netmask based on the network class of the virNetworkDef's IP
address.
virNetworkDefPrefix: return the netmask as numeric prefix (or the
default prefix for the network class of the virNetworkDef's IP
address, if no netmask was specified in the XML)
virSocketPrefixToNetmask: Given a 'prefix', which is the number of 1
bits in a netmask, fill in a virSocketAddr object with a netmask as an
IP address (IPv6 or IPv4).
virSocketAddrMask: Mask off the host bits in one virSocketAddr
according to the netmask in another virSocketAddr.
virSocketAddrMaskByPrefix, Mask off the host bits in a virSocketAddr
according to a prefix (number of 1 bits in netmask).
VIR_SOCKET_FAMILY: return the family of a virSocketAddr
Shorten qemuDomainSnapshotWriteSnapshotMetadata function name
and make it take a snapshot pointer instead of dealing with
the current snapshot. Update other functions accordingly.
Add a qemuDomainSnapshotReparentChildren hash iterator to
reparent the children of a snapshot that is being deleted. Use
qemuDomainSnapshotWriteMetadata to write updated metadata
to disk.
This fixes a problem where outdated parent information breaks
the snapshot tree and hinders the deletion of child snapshots.
Reported by Philipp Hahn.
I began noticing a race when reserving VNC ports as described here
https://www.redhat.com/archives/libvir-list/2010-November/msg00379.html
Turns out that we were not initializing the size field of bitmap
struct when allocating the bitmap. This subsequently caused
virBitmapSetBit() to fail since bitmap->size is 0, hence we never
actually reserved the port.
Fix glitch in commit cddd2a06 (thankfully post-0.8.6, so no
released version has the glitch).
Document and try to workaround glitch in commit 46e9b0f (in 0.8.0),
which invalidated 6 virErrorNumber values dating as far back as 0.7.1.
My audit did not find any other glitches until pre-0.1.0 days. I'm
not sure how to add a syntax-check off the top of my head, but
hopefully the explicit numbering will make people think twice about
renumbering in the future.
* include/libvirt/virterror.h (virErrorDomain): Avoid inserting
new values in the middle, and add explicit numbering to help avoid
this in the future.
(virErrorNumber): Add explicit numbering, and document the snafu.
* src/remote/remote_driver.c (remoteIO): Compensate for the snafu.
This fixes the build from a tarball and makes autobuild.sh
work again.
This should actually have been part of this earlier commit:
esx: Move VMX handling code out of the driver directory
42b2f35d36
Reported by Eric Blake.
All other drivers are explicitly linked to gnulib. The VMware
driver lacked this, resulting in mdir_name being an undefine
symbol.
Explicitly link the VMware driver to gnulib to fix this.
Now the VMware driver doesn't depend on the ESX driver anymore.
Add a WITH_VMX option that depends on WITH_ESX and WITH_VMWARE.
Also add a libvirt_vmx.syms file.
Move some escaping functions from esx_util.c to vmx.c.
Adapt the test suite, ESX and VMware driver to the new code layout.
Connecting to a ESX(i) server that is part of a cluster failed
when the connection also involved a vCenter.
Accept ClusterComputeResource type in addition to ComputeResource
type in the object lookup function.
Reported by Guillaume Le Louët.
If there is a dangling symbolic link in filesystem pool, the pool
will fail to start or refresh, this patch is to fix it by ignoring
it with a warning log.
Network disks are accessed by qemu directly, and have no
associated file on the host, so checking for file ownership etc.
is unnecessary.
Signed-off-by: Josh Durgin <joshd@hq.newdream.net>
* configure.ac (dlopen): Cygwin dlopen is in libc; avoid spurious
failure.
(XDR_CFLAGS): Define when needed.
* src/Makefile.am (libvirt_driver_remote_la_CFLAGS): Use it.
When running 'make check' under a multi-cpu Dom0 xen machine,
nodeinfotest had a spurious failure it was reading from
/sys/devices/system/cpu, but xen has no notion of topology. The test
was intended to be isolated from reading any real system files; the
regression was introduced in Mar 2010 with commit aa2f6f96dd.
Fix things by allowing an early exit for the testsuite.
* src/nodeinfo.c (linuxNodeInfoCPUPopulate): Add parameter.
(nodeGetInfo): Adjust caller.
* tests/nodeinfotest.c (linuxTestCompareFiles): Likewise.
* configure.ac (with_selinux): Check for <selinux/label.h>.
* src/security/security_selinux.c (getContext): New function.
(SELinuxRestoreSecurityFileLabel): Use it to restore compilation
when using older libselinux.
While not technically a double free (since VIR_FREE NULLs the
pointer), this is unnecessary extra code.
This crept in when the function was converted from virRun to virCommand.
The AUTHORS file has also been updated.
XPCOM returns an array as a pointer to an array of pointers to the
actual items. When the array isn't needed anymore the items are
released, but the actual array containing the pointers to the items
was not freed and leaked.
Free the actual array using ComUnallocMem.
This doesn't affect MSCOM as SafeArrayDestroy releases all items
and frees the array.
Don't require dlopen, but link to ole32 and oleaut32 on Windows.
Don't expose g_pVBoxFuncs anymore. It was only used to get the
version of the API. Make VBoxCGlueInit return the version instead.
This simplifies the implementation of the MSCOM glue layer.
Get the VirtualBox version from the registry.
Add a dummy implementation of the nsIEventQueue to the MSCOM glue
as there seems to be no direct equivalent with MSCOM. It might be
implemented using the normal window message loop. This requires
additional investigation.
The QEMU driver file is far too large. Move all the hotplug
helper code out into a separate file. No functional change.
* src/qemu/qemu_hotplug.c, src/qemu/qemu_hotplug.h,
src/Makefile.am: Add hotplug helper file
* src/qemu/qemu_driver.c: Delete hotplug code
To allow the APIs to be used from separate files, move the domain
lock / job helper code into qemu_domain.c
* src/qemu/qemu_domain.c, src/qemu/qemu_domain.h: Add domain lock
/ job code
* src/qemu/qemu_driver.c: Remove domain lock / job code
To allow their use from other source files, move qemuDriverLock
and qemuDriverUnlock to qemu_conf.h and make them non-static
* src/qemu/qemu_conf.c, src/qemu/qemu_conf.h: Add qemuDriverLock
qemuDriverUnlock
* src/qemu/qemu_driver.c: Remove qemuDriverLock and qemuDriverUnlock
The QEMU driver file is far too large. Move all the hostdev
helper code out into a separate file. No functional change.
* src/qemu/qemu_hostdev.c, src/qemu/qemu_hostdev.h,
src/Makefile.am: Add hostdev helper file
* src/qemu/qemu_driver.c: Delete hostdev code
The QEMU driver file is far too large. Move all the cgroup
helper code out into a separate file. No functional change.
* src/qemu/qemu_cgroup.c, src/qemu/qemu_cgroup.h,
src/Makefile.am: Add cgroup helper file
* src/qemu/qemu_driver.c: Delete cgroup code
The QEMU driver file is far too large. Move all the audit
helper code out into a separate file. No functional change.
* src/qemu/qemu_audit.c, src/qemu/qemu_audit.h,
src/Makefile.am: Add audit helper file
* src/qemu/qemu_driver.c: Delete audit code
Move the code for handling the QEMU virDomainObjPtr private
data, and custom XML namespace into a separate file
* src/qemu/qemu_domain.c, src/qemu/qemu_domain.h: New file
for private data & namespace code
* src/qemu/qemu_driver.c, src/qemu/qemu_driver.h: Remove
private data & namespace code
* src/qemu/qemu_driver.h, src/qemu/qemu_command.h: Update
includes
* src/Makefile.am: Add src/qemu/qemu_domain.c
The qemu_conf.c code is doing three jobs, driver config file
loading, QEMU capabilities management and QEMU command line
management. Move the command line code into its own file
* src/qemu/qemu_command.c, src/qemu/qemu_command.h: New
command line management code
* src/qemu/qemu_conf.c, src/qemu/qemu_conf.h: Delete command
line code
* src/qemu/qemu_conf.h, src/qemu_conf.c: Adapt for API renames
* src/Makefile.am: add src/qemu/qemu_command.c
* src/qemu/qemu_monitor_json.c, src/qemu/qemu_monitor_text.c: Add
import of qemu_command.h
The qemu_conf.c code is doing three jobs, driver config file
loading, QEMU capabilities management and QEMU command line
management. Move the capabilities code into its own file
* src/qemu/qemu_capabilities.c, src/qemu/qemu_capabilities.h: New
capabilities management code
* src/qemu/qemu_conf.c, src/qemu/qemu_conf.h: Delete capabilities
code
* src/qemu/qemu_conf.h: Adapt for API renames
* src/Makefile.am: add src/qemu/qemu_capabilities.c
So far, CPUID data were stored in two different data structures. First
of them was a structure allowing direct access for CPUID data according
to function number and the second was a plain array of struct
cpuX86cpuid. This was a silly design which resulted in converting data
from one type to the other and back again or implementing similar
functionality for both data structures.
The patch leaves only the direct access structure. This makes the code
both smaller and more maintainable since operations on different objects
can use common low-level operations.
All 57 tests for cpu subsystem still pass after this rewrite.
Allows compilation, but no creation of child processes yet. Take it
one step at a time.
* src/util/util.c (virExecWithHook) [WIN32]: New dummy function.
* src/libvirt_private.syms: Export it.
* .gnulib: Update to latest.
* bootstrap.conf (gnulib_modules): Import pipe-posix and waitpid
for mingw.
* src/remote/remote_driver.c (pipe) [WIN32]: Drop dead macro.
* daemon/event.c (pipe) [WIN32]: Drop dead function.
Currently, all of domain "save/dump/managed save/migration"
use the same function "qemudDomainWaitForMigrationComplete"
to wait the job finished, but the error messages are all
about "migration", e.g. when a domain saving job is canceled
by user, "migration was cancled by client" will be throwed as
an error message, which will be confused for user.
As a solution, intoduce two new job types(QEMU_JOB_SAVE,
QEMU_JOB_DUMP), and set "priv->jobActive" to "QEMU_JOB_SAVE"
before saving, to "QEMU_JOB_DUMP" before dumping, so that we
could get the real job type in
"qemudDomainWaitForMigrationComplete", and give more clear
message further.
And as It's not important to figure out what's the exact job
is in the DEBUG and WARN log, also we don't need translated
string in logs, simply repace "migration" with "job" in some
statements.
* src/qemu/qemu_driver.c
Current code does not pass VM mac address to a 802.1Qbh direct attach
interface using IFLA_VF_MAC. This patch adds support in macvtap code to
send IFLA_VF_MAC netlink request during port profile association on a
802.1Qbh interface.
Stefan Cc'ed for comments because this patch changes a condition for
802.1Qbg
802.1Qbh support for IFLA_VF_MAC in enic driver has been posted and is
pending acceptance at http://marc.info/?l=linux-netdev&m=129185244410557&w=2
This is pretty straightforward - even though dnsmasq gets daemonized
and uses a pid file, those things are both handled by the dnsmasq
binary itself. And libvirt doesn't need any of the output of the
dnsmasq command either, so we just setup the args and call
virRun(). Mainly it was just a (mostly) mechanical job of replacing
the APPEND_ARG() macro (and some other *printfs()) with
virCommandAddArg*().
Instead of just reporting that a task failed get the
localized message from the TaskInfo error and include
it in the reported error message.
Implement minimal deserialization support for the
MethodFault type in order to obtain the actual fault
type.
For example, this changes the reported error message
when trying to create a volume with zero size from
Could not create volume
to
Could not create volume: InvalidArgument - A specified parameter was not correct.
Not perfect yet, but better than before.
Changes common to all network disks:
-Make source name optional in the domain schema, since NBD doesn't use it
-Add a hostName type to the domain schema, and use it instead of genericName, which doesn't include .
-Don't leak host names or ports
-Set the source protocol in qemuParseCommandline
Signed-off-by: Josh Durgin <joshd@hq.newdream.net>
This patch adds network disk support to libvirt/QEMU. The currently
supported protocols are nbd, rbd, and sheepdog. The XML syntax is like
this:
<disk type="network" device="disk">
<driver name="qemu" type="raw" />
<source protocol='rbd|sheepdog|nbd' name="...some image identifier...">
<host name="mon1.example.org" port="6000">
<host name="mon2.example.org" port="6000">
<host name="mon3.example.org" port="6000">
</source>
<target dev="vda" bus="virtio" />
</disk>
Signed-off-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp>
`dump' watchdog action lets libvirtd to dump the guest when receives a
watchdog event (which probably means a guest crash)
Currently only qemu is supported.
When we get an EOF event on monitor connection, it may be a result of
either crash or graceful shutdown. QEMU which supports async events
(i.e., we are talking to it using JSON monitor) emits SHUTDOWN event on
graceful shutdown. In case we don't get this event by the time monitor
connection is closed, we assume the associated domain crashed.
Currently libvirt doesn't confirm whether the guest has responded to the
disk removal request. In some cases this can leave the guest with
continued access to the device while the mgmt layer believes that it has
been removed. With a recent qemu monitor command[1] we can
deterministically revoke a guests access to the disk (on the QEMU side)
to ensure no futher access is permitted.
This patch adds support for the drive_del() command and introduces it
in the disk removal paths. If the guest is running in a QEMU without this
command we currently explicitly check for unknown command/CommandNotFound
and log the issue.
If QEMU supports the command we issue the drive_del command after we attempt
to remove the device. The guest may respond and remove the block device
before we get to attempt to call drive_del. In that case, we explicitly check
for 'Device not found' from the monitor indicating that the target drive
was auto-deleted upon guest responds to the device removal notification.
1. http://thread.gmane.org/gmane.comp.emulators.qemu/84745
Signed-off-by: Ryan Harper <ryanh@us.ibm.com>
Currently libvirt doesn't confirm whether the guest has responded to the
disk removal request. In some cases this can leave the guest with
continued access to the device while the mgmt layer believes that it has
been removed. With a recent qemu monitor command[1] we can
deterministically revoke a guests access to the disk (on the QEMU side)
to ensure no futher access is permitted.
This patch adds support for the drive_unplug() command and introduces it
in the disk removal paths. There is some discussion to be had about how
to handle the case where the guest is running in a QEMU without this
command (and the fact that we currently don't have a way of detecting
what monitor commands are available).
Changes since v2:
- use VIR_ERROR to report when unplug command not found
Changes since v1:
- return > 0 when command isn't present, < 0 on command failure
- detect when drive_unplug command isn't present and log error
instead of failing entire command
Signed-off-by: Ryan Harper <ryanh@us.ibm.com>
- qemudDomainAttachPciControllerDevice: Don't build "devstr"
if "-device" of qemu is not available, as "devstr" will only
be used by "qemuMonitorAddDevice", which depends on "-device"
argument of qemu is supported.
- "qemudDomainSaveImageOpen": Fix indent problem.
* src/qemu/qemu_driver.c
Commit febc591683 introduced -vga none in
case no video card is included in domain XML. However, old qemu
versions do not support this and such domain cannot be successfully
started.
* .gnulib: Update to latest, for at least a stdint.h fix
* src/storage/storage_driver.c (storageVolumeZeroSparseFile)
(storageWipeExtent): Use better type, although it still triggers
spurious -Wformat warning on MacOS's gcc.
popen must be matched with pclose (not fclose), or it will leak
resources. Furthermore, it is a lousy interface when it comes to
signal handling. We're much better off using our decent command
wrapper. Note that virCommand guarantees that VIR_FREE(outbuf) is
both required and safe to call, whether virCommandRun succeeded or
failed.
* src/openvz/openvz_conf.c (openvzLoadDomains, openvzGetVEID):
Replace popen with virCommand usage.
Guarantee that outbuf/errbuf are allocated on success, even if to the
empty string. Caller always has to free the result, and empty output
check requires checking if *outbuf=='\0'. Makes the API easier to use
safely. Failure is best effort allocation (some paths, like
out-of-memory, cannot allocate a buffer, but most do), so caller must
free buffer on failure.
* docs/internals/command.html.in: Update documentation.
* src/util/command.c (virCommandSetOutputBuffer)
(virCommandSetErrorBuffer, virCommandProcessIO) Guarantee empty
string on no output.
* tests/commandtest.c (test17): New test.
* docs/internals/command.html.in: Better documentation of buffer
vs. fd considerations.
* src/util/command.c (virCommandRunAsync): Reject raw execution
with string io.
(virCommandRun): Reject execution with user-specified fds not
visiting a regular file.
* src/conf/domain_conf.c (virDomainDefParseXML): Prefer sysinfo
uuid over generating one, and if both uuids are present, require
them to be identical.
* src/qemu/qemu_conf.c (qemuBuildSmbiosSystemStr): Allow skipping
the uuid.
(qemudBuildCommandLine): Adjust caller; <smbios mode=host/> must
not use host uuid in place of guest uuid.
The log lists things like -smbios type=1,vendor="Red Hat", which
is great for shell parsing, but not so great when you realize that
execve() then passes those literal "" on as part of the command
line argument, such that qemu sets SMBIOS with extra literal quotes.
The eventual addition of virCommand is needed before we have the API
to shell-quote a string representation of a command line, so that the
log can still be pasted into a shell, but without inserting extra
bytes into the execve() arguments.
* src/qemu/qemu_conf.c (qemuBuildSmbiosBiosStr)
(qemuBuildSmbiosSystemStr): Qemu doesn't like quotes around uuid
arguments, and the remaining quotes are passed literally to
smbios, making <smbios mode='host'/> inaccurate. Removing the
quotes makes the log harder to parse, but that can be fixed later
with virCommand improvements.
* tests/qemuxml2argvdata/qemuxml2argv-smbios.args: 'Fix' test; it
will need fixing again once virCommand learns how to shell-quote a
potential command line.
Humans consider January as month #1, while gmtime_r(3) calls it month #0.
While fixing it, render qemu's rtc parameter with leading zeros, as is more
commonplace.
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=660194
* src/util/threads.h (virThreadID): New prototype.
* src/util/threads-pthread.c (virThreadID): New function.
* src/util/threads-win32.c (virThreadID): Likewise.
* src/libvirt_private.syms (threads.h): Export it.
* daemon/event.c (virEventInterruptLocked): Use it to avoid
warning on BSD systems.
"virCommandRun": if "cmd->outbuf" or "cmd->errbuf" is NULL,
libvirtd will be crashed when trying to start a qemu domain
(which invokes "virCommandRun"), it caused by we try to use
"*cmd->outbuf" and "*cmd->errbuf" regardless of cmd->outbuf
or cmd->errbuf is NULL.
* src/util/command.c (virCommandRun)
Two more calls to remote libvirtd have to be surrounded by
qemuDomainObjEnterRemoteWithDriver() and
qemuDomainObjExitRemoteWithDriver() to prevent possible deadlock between
two communicating libvirt daemons.
See commit f0c8e1cb37 for further details.
virDrvSupportsFeature API is allowed to return -1 on error while all but
one uses of VIR_DRV_SUPPORTS_FEATURE only check for (non)zero return
value. Let's make this macro return zero on error, which is what
everyone expects anyway.
This patch adds a mode_t parameter to virFileWriteStr().
If mode is different from 0, virFileWriteStr() will try
to create the file if it doesn't exist.
* src/util/util.h (virFileWriteStr): Alter signature.
* src/util/util.c (virFileWriteStr): Allow file creation.
* src/network/bridge_driver.c (networkEnableIpForwarding)
(networkDisableIPV6): Adjust clients.
* src/node_device/node_device_driver.c
(nodeDeviceVportCreateDelete): Likewise.
* src/util/cgroup.c (virCgroupSetValueStr): Likewise.
* src/util/pci.c (pciBindDeviceToStub, pciUnBindDeviceFromStub):
Likewise.
* src/qemu/qemu_conf.c (qemudExtractVersionInfo): Check for file
before executing it here, rather than in callers.
(qemudBuildCommandLine): Rewrite with virCommand.
* src/qemu/qemu_conf.h (qemudBuildCommandLine): Update signature.
* src/qemu/qemu_driver.c (qemuAssignPCIAddresses)
(qemudStartVMDaemon, qemuDomainXMLToNative): Adjust callers.
This proof of concept shows how two existing uses of virExec
and virRun can be ported to the new virCommand APIs, and how
much simpler the code becomes
This introduces a new set of APIs in src/util/command.h
to use for invoking commands. This is intended to replace
all current usage of virRun and virExec variants, with a
more flexible and less error prone API.
* src/util/command.c: New file.
* src/util/command.h: New header.
* src/Makefile.am (UTIL_SOURCES): Build it.
* src/libvirt_private.syms: Export symbols internally.
* tests/commandtest.c: New test.
* tests/Makefile.am (check_PROGRAMS): Run it.
* tests/commandhelper.c: Auxiliary program.
* tests/commanddata/test2.log - test15.log: New expected outputs.
* cfg.mk (useless_free_options): Add virCommandFree.
(msg_gen_function): Add virCommandError.
* po/POTFILES.in: New translation.
* .x-sc_avoid_write: Add exemption.
* tests/.gitignore: Ignore new built file.
* src/qemu/qemu_driver.c (though MACROS QEMU_VNC_PORT_MAX, and
QEMU_VNC_PORT_MIN are defined at the beginning, numbers (65535, 5900)
are still used, replace them)
The arguments passed to the thread function must be allocated on
the heap, rather than the stack, since it is possible for the
spawning thread to continue before the new thread runs at all.
In such a case, it is possible that the area of stack where the
thread args were stored is overwritten.
* src/util/threads-pthread.c, src/util/threads-win32.c: Allocate
thread arguments on the heap
Use macvtap specific functions depending on WITH_MACVTAP.
Use #if instead of #ifdef to check for WITH_MACVTAP, because
WITH_MACVTAP is always defined with value 0 or 1.
Also export virVMOperationType{To|From}String unconditional,
because they are used unconditional in the domain config code.
When dumping a domain, it's reasonable to save dump-file in raw format
if dump format is misconfigured or the corresponding compress program
is not available rather then fail dumping.
This patch introduces the usage of the pre-associate state of the IEEE 802.1Qbg standard on incoming VM migration on the target host. It is in response to bugzilla entry 632750.
https://bugzilla.redhat.com/show_bug.cgi?id=632750
For being able to differentiate the exact reason as to why a macvtap device is being created, either due to a VM creation or an incoming VM migration, I needed to pass that reason as a parameter from wherever qemudStartVMDaemon is being called in order to determine whether to send an ASSOCIATE (VM creation) or a PRE-ASSOCIATE (incoming VM migration) towards lldpad.
I am also fixing a problem with the virsh domainxml-to-native call on the way.
Gerhard successfully tested the patch with a recent blade network 802.1Qbg-compliant switch.
The patch should not have any side-effects on the 802.1Qbh support in libvirt, but Roopa (cc'ed) may want to verify this.
We currently use the next free veid although there's one given in the
domain xml. This currently breaks defining new domains since vmdef->name
and veid don't match leading to the following error later on:
error: Failed to define domain from 110.xml
error: internal error Could not set UUID
Since silently ignoring vmdef->name is not nice respect it instead. We
avoid veid collisions in the upper levels already.
This reverts commit
Log all errors at level INFO to stop polluting syslog
04bd0360f3.
and makes virRaiseErrorFull() log errors at debug priority
when called from inside libvirtd. This stops libvirtd from
polluting it's own log with client errors at error priority
that'll be reported and logged on the client side anyway.
When we set migrate_speed by json, we receive the following
error message:
libvirtError: internal error unable to execute QEMU command
'migrate_set_speed': Invalid parameter type, expected: number
The reason is that: the arguments of migrate_set_speed
by json is json number, not json string.
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
The nodeinfo structure includes
nodes : the number of NUMA cell, 1 for uniform mem access
sockets : number of CPU socket per node
cores : number of core per socket
threads : number of threads per core
which does not work well for NUMA topologies where each node does not
consist of integral number of CPU sockets.
We also have VIR_NODEINFO_MAXCPUS macro in public libvirt.h which
computes maximum number of CPUs as (nodes * sockets * cores * threads).
As a result, we can't just change sockets to report total number of
sockets instead of sockets per node. This would probably be the easiest
since I doubt anyone is using the field directly. But because of the
macro, some apps might be using sockets indirectly.
This patch leaves sockets to be the number of CPU sockets per node (and
fixes qemu driver to comply with this) on machines where sockets can be
divided by nodes. If we can't divide sockets by nodes, we behave as if
there was just one NUMA node containing all sockets. Apps interested in
NUMA should consult capabilities XML, which is what they probably do
anyway.
This way, the only case in which apps that care about NUMA may break is
on machines with funky NUMA topology. And there is a chance libvirt
wasn't able to start any guests on those machines anyway (although it
depends on the topology, total number of CPUs and kernel version).
Nothing changes at all for apps that don't care about NUMA.
security_context_t happens to be a typedef for char*, and happens to
begin with a string usable as a raw context string. But in reality,
it is an opaque type that may or may not have additional information
after the first NUL byte, where that additional information can
include pointers that can only be freed via freecon().
Proof is from this valgrind run of daemon/libvirtd:
==6028== 839,169 (40 direct, 839,129 indirect) bytes in 1 blocks are definitely lost in loss record 274 of 274
==6028== at 0x4A0515D: malloc (vg_replace_malloc.c:195)
==6028== by 0x3022E0D48C: selabel_open (label.c:165)
==6028== by 0x3022E11646: matchpathcon_init_prefix (matchpathcon.c:296)
==6028== by 0x3022E1190D: matchpathcon (matchpathcon.c:317)
==6028== by 0x4F9D842: SELinuxRestoreSecurityFileLabel (security_selinux.c:382)
800k is a lot of memory to be leaking.
* src/storage/storage_backend.c
(virStorageBackendUpdateVolTargetInfoFD): Avoid leak on error.
* src/security/security_selinux.c
(SELinuxReserveSecurityLabel, SELinuxGetSecurityProcessLabel)
(SELinuxRestoreSecurityFileLabel): Use correct function to free
security_context_t.
Making this change makes it easier to spot the memory leaks
that will be fixed in the next patch.
* cfg.mk (sc_prohibit_xmlGetProp): New rule.
* .x-sc_prohibit_xmlGetProp: New exception.
* Makefile.am (EXTRA_DIST): Ship exception file.
* tools/virsh.c (cmdDetachInterface, cmdDetachDisk): Adjust
offenders.
* src/conf/storage_conf.c (virStoragePoolDefParseSource):
Likewise.
* src/conf/network_conf.c (virNetworkDHCPRangeDefParseXML)
(virNetworkIPParseXML): Likewise.
virConnectClose calls virUnrefConnect which in turn closes
all open drivers when the refcount of that connection dropped
to zero. This works fine when you free all other objects that
hold a ref to the connection before you close it, because in
this case virUnrefConnect is the one that removes the last
ref to the connection.
But it doesn't work when you close the connection first before
freeing the other objects. This is because the other virUnref*
functions call virReleaseConnect when they detect that the
connection's refcount dropped to zero. In this case another
virUnref* function (different from virUnrefConnect) removes the
last ref to the connection. This results in not closing the
open drivers and leaking things that should have been cleaned
up in the driver close functions.
To fix this move the driver close calls to virReleaseConnect.
Except LXC and UML driver, implementations of all other drivers
simply return 0, because these drivers doesn't have config both
in memory and on disk, no need to track if the domain of these
drivers updated or not.
Rename "xenUnifiedDomainisPersistent" to "xenUnifiedDomainIsPersistent"
* esx/esx_driver.c
* lxc/lxc_driver.c
* opennebula/one_driver.c
* openvz/openvz_driver.c
* phyp/phyp_driver.c
* test/test_driver.c
* uml/uml_driver.c
* vbox/vbox_tmpl.c
* xen/xen_driver.c
* xenapi/xenapi_driver.c
introduce new public API "virDomainIsUpdated"
* src/conf/domain_conf.h (new member "updated" for "virDomainObj")
* src/libvirt_public.syms
* include/libvirt/libvirt.h.in
gnulib wraps Windows' SOCKET handle based send() and recv() functions
into file descriptor based ones that are used in libvirt.
Even though GnuTLS is using gnulib too, it explicitly doesn't use
gnulib's replacement functions on Windows. By default GnuTLS uses the
SOCKET handle based send() and recv(). This makes gnutls_handshake()
fail internally with a WSAENOTSOCK error because libvirt passes a
file descriptor; GnuTLS needs the SOCKET handle.
To avoid this mismatch make sure that GnuTLS uses gnulib's replacment
functions, by setting custom pull() and push() functions for GnuTLS.
The stdio.h header has a function called 'remove' declared. This
clashes with the 'remove' parameter in virShrinkN
* src/util/memory.c: Rename 'remove' to 'toremove'
The SCSI volumes currently get a name like '17:0:0:1' based
on $host:$bus:$target:$lun. The names are intended to be unique
per pool and stable across pool restarts. The inclusion of the
$host component breaks this, because the $host number for iSCSI
pools is dynamically allocated by the kernel at time of login.
This changes the name to be 'unit:0:0:1', ie removes the leading
host component. The 'unit:' prefix is just to ensure the volume
name doesn't start with a number and make it clearer when seen
out of context.
* src/storage/storage_backend_scsi.c: Improve volume name
field value stability and uniqueness
Many operations are not valid on inactive storage pools. The
storage driver is currently returning VIR_ERR_INTERNAL_ERROR
in these cases, rather than the more suitable error code
VIR_ERR_OPERATION_INVALID
* src/storage/storage_driver.c: Fix error code when pool
is not active
When libvirt starts up all storage pools default to the inactive
state, even if the underlying storage is already active on the
host. This introduces a new API into the internal storage backend
drivers that checks whether a storage pool is already active. If
the pool is active at libvirtd startup, the volume list will be
immediately populated.
* src/storage/storage_backend.h: New internal API for checking
storage pool state
* src/storage/storage_driver.c: Check whether a pool is active
upon driver startup
* src/storage/storage_backend_fs.c, src/storage/storage_backend_iscsi.c,
src/storage/storage_backend_logical.c, src/storage/storage_backend_mpath.c,
src/storage/storage_backend_scsi.c: Add checks for pool state
Since the previous patch added support for parsing the output of
the 'sendtargets' command, it is now trivial to support the
storage pool discovery API.
Given a hostname and optional portnumber and initiator IQN,
the code can return a full list of storage pool source docs,
each one representing a iSCSI target.
* src/storage/storage_backend_iscsi.c: Wire up target
auto-discovery
The Linux iSCSI initiator toolchain has the dubious feature that
if you ever run the 'sendtargets' command to merely query what
targets are available from a server, the results will be recorded
in /var/lib/iscsi. Any time the '/etc/init.d/iscsi' script runs
in the future, it will then automatically login to all those
targets. /etc/init.d/iscsi is automatically run whenever a NIC
comes online.
So from the moment you ask a server what targets are available,
your client will forever more automatically try to login to all
targets without ever asking if you actually want it todo this.
To stop this stupid behaviour, we need to run
iscsiadm --portal $PORTAL --target $TARGET
--op update --name node.startup --value manual
For every target on the server.
* src/storage/storage_backend_iscsi.c: Disable automatic login
for targets found as a result of a 'sendtargets' command
The following series of patches are adding significant
extra functionality to the iSCSI driver. THe current
internal helper methods are not sufficiently flexible
to cope with these changes. This patch refactors the
code to avoid needing to have a virStoragePoolObjPtr
instance as a parameter, instead passing individual
target, portal and initiatoriqn parameters.
It also removes hardcoding of port 3260 in the portal
address, instead using the XML value if any.
* src/storage/storage_backend_iscsi.c: Refactor internal
helper methods
The XML docs describe a 'port' attribute for the
storage source <host> element, but the parser never
handled it.
* docs/schemas/storagepool.rng: Define port attribute
* src/conf/storage_conf.c: Add missing parsing/formatting
of host port number
* src/conf/storage_conf.h: Remove bogus/unused 'protocol' field
When running non-root, the QEMU log file is usually opened with
truncation, since there is no logrotate for non-root usage.
This means that when libvirt logs the shutdown timestamp, the
log is accidentally truncated
* src/qemu/qemu_driver.c: Never truncate log file with shutdown
message
The QEMU logger appends a ':' to the timestamp when it deems
it neccessary, so the virTimestamp API should not duplicate
this
* src/util/util.c: Remove trailing ':' from timestamp
Everytime a public API returns an error, libvirtd pollutes
syslog with that error message. Reduce the error logging
level to INFO so these don't appear by default.
* src/util/virterror.c: Log all errors at INFO
The virFork call resets all logging handlers that may have been
set. Re-enable them after fork in virExec, so that env variables
fir LIBVIRT_LOG_OUTPUTS and LIBVIRT_LOG_FILTERS take effect
until the execve()
* src/util/util.c: Preserve logging in child in virExec
To allow messages from different threads to be untangled,
include an integer thread identifier in log messages.
* src/util/logging.c: Include thread ID
* src/util/threads.h, src/util/threads.h, src/util/threads-pthread.c:
Add new virThreadSelfID() function
* configure.ac: Check for sys/syscall.h
Do this by adding a helper function to get the persistent domain config. This
should be useful for other functions that may eventually want to alter
the persistent domain config (attach/detach device). Also make similar changes
to the test drivers setvcpus command.
A caveat is that the function will return the running config for a transient
domain, rather than error. This simplifies callers, as long as they use
other methods to ensure the guest is persistent.
Doing 'virsh setvcpus $vm --config 10' doesn't check the value against the
domains maxvcpus value. A larger value for example will prevent the guest
from starting.
Also make a similar change to the test driver.
The current semantics of non-persistent hotplug/update are confusing: the
changes will persist as long as the in memory domain definition isn't
overwritten. This means hotplug changes stay around until the domain is
redefined or libvirtd is restarted.
Call virDomainObjSetDefTransient at VM startup, so that we properly discard
hotplug changes when the VM is shutdown.
This function sets the running domain definition as transient, by reparsing
the persistent config and assigning it to newDef. This ensures that any
changes made to the running definition and not the persistent config are
discarded when the VM is shutdown.
This patch makes two corrections to the newly-added QED support patch series:
- Correct the QED header field offsets
- Remove XML parsing for VIR_STORAGE_FILE_AUTO_SAFE
Signed-off-by: Adam Litke <agl@us.ibm.com>
The IP address learning thread was causing a deadlock when it instantiated a filter while a filter update/change was ongoing. The reason for this was the ordering of locks due to the following calls
virNWFilterUnlockFilterUpdates()
virNWFilterPoolObjFindByName()
The below patch now puts the order of the locks in the above shown order when instantiating the filter from the IP address learning thread.
Implement getBackingStore() for QED images. The header format is defined in
the QED spec: http://wiki.qemu.org/Features/QED .
Signed-off-by: Adam Litke <agl@us.ibm.com>
Cc: Stefan Hajnoczi <stefan.hajnoczi@uk.ibm.com>
Cc: Anthony Liguori <aliguori@linux.vnet.ibm.com>
Add an entry in fileTypeInfo for QED image files.
Signed-off-by: Adam Litke <agl@us.ibm.com>
Cc: Stefan Hajnoczi <stefan.hajnoczi@uk.ibm.com>
Cc: Anthony Liguori <aliguori@linux.vnet.ibm.com>
Disk image formats that wish to opt-out of version validation are supposed to
set versionOffset to -1 in their fileTypeInfo entry.
By unconditionally returning False for these formats,
virStorageFileMatchesVersion() incorrectly reports a version mismatch when the
test was actually skipped. The correct behavior is to return True so these
formats can be successfully probed using the magic bytes alone.
Signed-off-by: Adam Litke <agl@us.ibm.com>
The code in SELinuxRestoreSecurityChardevLabel() was trying to
use SELinuxSetFilecon directly for devices or file types while
it should really use SELinuxRestoreSecurityFileLabel encapsulating
routine, which avoid various problems like resolving symlinks,
making sure he file exists and work around NFS problems
Include locale.h for setlocale().
Revert the usage string back to it's original form.
Use puts() instead of fputs(), as fputs() expects a FILE*.
Add closing parenthesis to some vah_error() calls.
Use argv[0] instead of an undefined argv0.
These messages are visible to the user, so they should be
consistently translated.
* cfg.mk (msg_gen_function): Add vah_error, vah_warning.
* src/security/virt-aa-helper.c: Translate messages.
(catchXMLError): Fix capitalization.
Per the gettext developer:
http://lists.gnu.org/archive/html/bug-gnu-utils/2010-10/msg00019.htmlhttp://lists.gnu.org/archive/html/bug-gnu-utils/2010-10/msg00021.html
gettext() doesn't work correctly on all platforms unless you have
called setlocale(). Furthermore, gnulib's gettext.h has provisions
for setting up a default locale, which is the preferred method for
libraries to use gettext without having to call textdomain() and
override the main program's default domain (virInitialize already
calls bindtextdomain(), but this is insufficient without the
setlocale() added in this patch; and a redundant bindtextdomain()
in this patch doesn't hurt, but serves as a good example for other
packages that need to bind a second translation domain).
This patch is needed to silence a new gnulib 'make syntax-check'
rule in the next patch.
* daemon/libvirtd.c (main): Setup locale and gettext.
* src/lxc/lxc_controller.c (main): Likewise.
* src/security/virt-aa-helper.c (main): Likewise.
* src/storage/parthelper.c (main): Likewise.
* tools/virsh.c (main): Fix exit status.
* src/internal.h (DEFAULT_TEXT_DOMAIN): Define, for gettext.h.
(_): Simplify definition accordingly.
* po/POTFILES.in: Add src/storage/parthelper.c.
I am replacing the last instances of close() I found with VIR_CLOSE() / VIR_FORCE_CLOSE respectively.
The first part patches virsh, which I missed out on previously.
The 2nd patch I had left out intentionally to look at it more carefully:
The 'closed' variable could be easily removed since it wasn't used anywhere else. The possible race condition that could result from the filedescriptor being closed and not set to -1 (and possibly let us write into 'something' totally different if the fd was allocated by another thread) seems to be prevented by the qemuMonitorLock() already placed around the code that reads from or writes to the fd. So the change of this code as shown in the patch should not have any side-effects.
Rather than only cleaning any remaining ebtables rules, also clean those applied to iptables and ip6tables when detecting the IP address of an interface. Previous applied iptables rules may hinder DHCP packets.
Similarly to deprecating close(), I am now deprecating fclose() and
introduce VIR_FORCE_FCLOSE() and VIR_FCLOSE(). Also, fdopen() is replaced with
VIR_FDOPEN().
Most of the files are opened in read-only mode, so usage of
VIR_FORCE_CLOSE() seemed appropriate. Others that are opened in write
mode already had the fclose()< 0 check and I converted those to
VIR_FCLOSE()< 0.
I did not find occurrences of possible double-closed files on the way.
Currently only support domain start and shutdown, for domain start,
record timestamp before the qemu command line, and for domain shutdown,
just say it's shutting down with timestamp.
* src/qemu/qemu_driver.c (qemudStartVMDaemon, qemudShutdownVMDaemon
introduced two macros - START_POSTFIX, SHUTDOWN_POSTFIX)
* src/nwfilter/nwfilter_ebiptables_driver.c
(ebiptablesWriteToTempFile): Use /bin/sh.
(bash_cmd_path): Delete.
(ebiptablesDriverInit, ebiptablesDriverShutdown): No need to
search for bash.
(CMD_EXEC): Prefer $() over ``, since we can assume POSIX.
(iptablesSetupVirtInPost): Use portable 'test' syntax.
(iptablesLinkIPTablesBaseChain): Use POSIX $(()) syntax.
This is more flexible regarding the location of the python binary
but doesn't allow to pass the -u flag. The -i flag can be passed
from inside the script using the PYTHONINSPECT env variable.
This fixes a problem with the esx_vi_generator.py on FreeBSD.
This makes the storage driver fail when the connection is
opened with the VIR_CONNECT_RO flag, resulting in a read-only
connection with no storage driver.
In a first step I am converting the netlink message construction in
macvtap code to use libnl. It's pretty much a 1:1 conversion except that
now the message needs to be allocated and deallocated.
When <uuid> is not in the XML, a virUUIDGenerate() ends up being called which
is unnecessary and can lead to crashes if /dev/urandom isn't available
because virRandomInitialize() is not called within virt-aa-helper. This patch
adds verify_xpath_context() and updates caps_mockup() to use it.
Bug-Ubuntu: https://launchpad.net/bugs/672943
If virDomainAttachDevice() was called with an image that was located
on a root-squashed NFS server, and in a directory that was unreadable
by root on the machine running libvirtd, the attach would fail due to
an attempt to change the selinux label of the image with EACCES (which
isn't covered as an ignore case in SELinuxSetFilecon())
NFS doesn't support SELinux labelling anyway, so we mimic the failure
handling of commit 93a18bbafa, which
just ignores the errors if the target is on an NFS filesystem (in
SELinuxSetSecurityAllLabel() only, though.)
This can be seen as a follow-on to commit
347d266c51, which ignores file open
failures of files on NFS that occur directly in
virDomainDiskDefForeachPath() (also necessary), but does not ignore
failures in functions that are called from there (eg
SELinuxSetSecurityFileLabel()).
Introduce implementations of the virDomainOpenConsole() API
for LXC, Xen and UML drivers.
* src/lxc/lxc_driver.c, src/lxc/lxc_driver.c,
src/xen/xen_driver.c: Wire up virDomainOpenConsole
The util/threads.c/h code already has APIs for mutexes,
condition variables and thread locals. This commit adds
in code for actually creating threads.
* src/libvirt_private.syms: Export new symbols
* src/util/threads.h: Define APIs virThreadCreate, virThreadSelf,
virThreadIsSelf and virThreadJoin
* src/util/threads-win32.c, src/util/threads-win32.h: Win32
impl of threads
* src/util/threads-pthread.c, src/util/threads-pthread.h: POSIX
impl of threads
This provides an implementation of the virDomainOpenConsole
API with the QEMU driver. For the streams code, this reuses
most of the code previously added for the tunnelled migration
streams since it is generic.
* src/qemu/qemu_driver.c: Support virDomainOpenConsole
To avoid the need for duplicating implementations of virStream
drivers, provide a generic implementation that can handle any
FD based stream. This code is copied from the existing impl
in the QEMU driver, with the locking moved into the stream
impl, and addition of a read callback
The FD stream code will refuse to operate on regular files or
block devices, since those can't report EAGAIN properly when
they would block on I/O
* include/libvirt/virterror.h, include/libvirt/virterror.h: Add
VIR_FROM_STREAM error domain
* src/qemu/qemu_driver.c: Remove code obsoleted by the new
generic streams driver.
* src/fdstream.h, src/fdstream.c, src/fdstream.c,
src/libvirt_private.syms: Generic reusable FD based streams
Now that bi-directional, non-blocking streams are supported
in the remote driver, some of the VIR_WARN statements need
to be reduced to VIR_DEBUG.
* src/remote/remote_driver.c: Lower logging level
This provides an implementation of the virDomainOpenConsole
API for the remote driver client and server.
* daemon/remote.c: Server side impl
* src/remote/remote_driver.c: Client impl
* src/remote/remote_protocol.x: Wire definition
To enable virsh console (or equivalent) to be used remotely
it is necessary to provide remote access to the /dev/pts/XXX
pseudo-TTY associated with the console/serial/parallel device
in the guest. The virStream API provide a bi-directional I/O
stream capability that can be used for this purpose. This
patch thus introduces a virDomainOpenConsole API that uses
the stream APIs.
* src/libvirt.c, src/libvirt_public.syms,
include/libvirt/libvirt.h.in, src/driver.h: Define the
new virDomainOpenConsole API
* src/esx/esx_driver.c, src/lxc/lxc_driver.c,
src/opennebula/one_driver.c, src/openvz/openvz_driver.c,
src/phyp/phyp_driver.c, src/qemu/qemu_driver.c,
src/remote/remote_driver.c, src/test/test_driver.c,
src/uml/uml_driver.c, src/vbox/vbox_tmpl.c,
src/xen/xen_driver.c, src/xenapi/xenapi_driver.c: Stub
API entry point
The current remote driver code for streams only supports
blocking I/O mode. This is fine for the usage with migration
but is a problem for more general use cases, in particular
bi-directional streams.
This adds supported for the stream callbacks and non-blocking
I/O. with the minor caveat is that it doesn't actually do
non-blocking I/O for sending stream data, only receiving it.
A future patch will try to do non-blocking sends, but this is
quite tricky to get right.
* src/remote/remote_driver.c: Allow non-blocking I/O for
streams and support callbacks
The /dev/console device inside the container must NOT map
to the real /dev/console device node, since this allows the
container control over the current host console. A fun side
effect of this is that starting a container containing a
real Fedora OS will kill off your X server.
Remove the /dev/console node, and replace it with a symlink
to the primary console TTY
* src/lxc/lxc_container.c: Replace /dev/console with a
symlink to /dev/pty/0
* src/lxc/lxc_controller.c: Remove /dev/console from cgroups
ACL
QEMU allows forcing a CDROM eject even if the guest has locked the device.
Expose this via a new UpdateDevice flag, VIR_DOMAIN_DEVICE_MODIFY_FORCE.
This has been requested for RHEV:
https://bugzilla.redhat.com/show_bug.cgi?id=626305
v2: Change flag name, bool cleanups
I am trying to use a qcow image with libvirt where the backing 'file' is a
qemu-nbd server. Unfortunately virDomainDiskDefForeachPath() assumes that
backingStore is always a real file so something like 'nbd:0:3333' is rejected
because a file with that name cannot be accessed. Note that I am not worried
about directly using nbd images. That would require a new disk type with XML
markup, etc. I only want it to be permitted as a backingStore
The following patch implements danpb's suggestion:
> I think I'm inclined to push the logic for skipping NBD one stage higher.
> I'd rather expect virStorageFileGetMetadata() to return all backing
> stores, even if not files. The virDomainDiskDefForeachPath() method
> should definitely ignore non-file backing stores though.
>
> So what I'm thinking is to extend the virStorageFileMetadata struct and
> just add a 'bool isFile' field to it. Default this field to true, unless
> you see the prefix of nbd: in which case set it to false. The
> virDomainDiskDefForeachPath() method can then skip over any backing
> store with isFile == false
Signed-off-by: Adam Litke <agl@us.ibm.com>
Cc: Daniel P. Berrange <berrange@redhat.com>
xencapstest calls xenHypervisorMakeCapabilitiesInternal with conn == NULL
which calls xenDaemonNodeGetTopology with conn == NULL when a recent
enough Xen was detected (sys_interface_version >= SYS_IFACE_MIN_VERS_NUMA).
But xenDaemonNodeGetTopology insists in having conn != NULL and fails,
because it expects to be able to talk to an actual xend.
We cannot do that in a 'make check' test. Therefore, only call the xend
subdriver function when conn isn't NULL.
Reported by Andy Howell and Jim Fehlig.
Using automated replacement with sed and editing I have now replaced all
occurrences of close() with VIR_(FORCE_)CLOSE() except for one, of
course. Some replacements were straight forward, others I needed to pay
attention. I hope I payed attention in all the right places... Please
have a look. This should have at least solved one more double-close
error.
This extends the SPICE XML to allow channel security options
<graphics type='spice' port='-1' tlsPort='-1' autoport='yes'>
<channel name='main' mode='secure'/>
<channel name='record' mode='insecure'/>
</graphics>
Any non-specified channel uses the default, which allows both
secure & insecure usage
* src/conf/domain_conf.c, src/conf/domain_conf.h,
src/libvirt_private.syms: Add XML syntax for specifying per
channel security options for spice.
* src/qemu/qemu_conf.c: Configure channel security with spice
QEMU crashes & burns if you try multiple Cirrus video cards, but
QXL copes fine. Adapt QEMU config code to allow multiple QXL
video cards
* src/qemu/qemu_conf.c: Support multiple QXL video cards
This extends the XML syntax for <graphics> to allow a password
expiry time to be set
eg
<graphics type='vnc' port='5900' autoport='yes' keymap='en-us' passwd='12345' passwdValidTo='2010-04-09T15:51:00'/>
The timestamp is in UTC.
* src/conf/domain_conf.h: Pull passwd out into separate struct
virDomainGraphicsAuthDef to allow sharing between VNC & SPICE
* src/conf/domain_conf.c: Add parsing/formatting of new passwdValidTo
argument
* src/opennebula/one_conf.c, src/qemu/qemu_conf.c, src/qemu/qemu_driver.c,
src/xen/xend_internal.c, src/xen/xm_internal.c: Update for changed
struct containing VNC password
In common with VNC, the QEMU driver configuration file is used
specify the host level TLS certificate location and a default
password / listen address
* src/qemu/qemu.conf: Add spice_listen, spice_tls,
spice_tls_x509_cert_dir & spice_password config params
* src/qemu/qemu_conf.c, src/qemu/qemu_conf.h: Parsing of
spice config parameters and updating -spice arg generation
to use them
* tests/qemuxml2argvdata/qemuxml2argv-graphics-spice-rhel6.args,
tests/qemuxml2argvtest.c: Expand test case to cover driver
level configuration
This supports the -spice argument posted for review against
the latest upstream QEMU/KVM. This supports the bare minimum
config with port, TLS port & listen address. The x509 bits are
added in a later patch.
* src/qemu_conf.c, src/qemu_conf.h: Add SPICE flag. Check for
-spice availability. Format -spice arg for command line
* qemuhelptest.c: Add SPICE flag
* qemuxml2argvdata/qemuxml2argv-graphics-spice.args: Add <graphics>
for spice
* qemuxml2argvdata/qemuxml2argv-graphics-spice.xml: Add -spice arg
* qemuxml2argvtest.c: Add SPICE flag
This supports the '-vga qxl' parameter in upstream QEMU/KVM
which has SPICE support added. This isn't particularly useful
until you get the next patch for -spice support. Also note that
while the libvirt XML supports multiple video devices, this
patch only supports a single one. A later patch can add support
for 2nd, 3rd, etc PCI devices for QXL
* src/qemu/qemu_conf.h: Flag for QXL support
* src/qemu/qemu_conf.c: Probe for '-vga qxl' support and implement it
* tests/qemuxml2argvtest.c, tests/qemuxml2xmltest.c,
tests/qemuxml2argvdata/qemuxml2argv-graphics-spice.args,
tests/qemuxml2argvdata/qemuxml2argv-graphics-spice.xml: Test
case for generating spice args with RHEL6 kvm
This adds an element
<graphics type='spice' port='5903' tlsPort='5904' autoport='yes' listen='127.0.0.1'/>
This is the bare minimum that should be exposed in the guest
config for SPICE. Other parameters are better handled as per
host level configuration tunables
* docs/schemas/domain.rng: Define the SPICE <graphics> schema
* src/domain_conf.h, src/domain_conf.c: Add parsing and formatting
for SPICE graphics config
* src/qemu_conf.c: Complain about unsupported graphics types
* src/qemu_conf.c: Add dummy entry in enumeration
* docs/schemas/domain.rng: Add 'qxl' as a type for the <video> tag
* src/domain_conf.c, src/domain_conf.h: Add QXL to video type
enumerations
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
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.
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.
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()
