Commit Graph

5531 Commits

Author SHA1 Message Date
Jiri Denemark
4f86613ba1 qemu: Re-reserve all PCI addresses on libvirtd restart
When reconnecting to existing VMs, we re-reserved only those PCI
addresses which were explicitly mentioned in domain XML. Since some
addresses are always reserved (e.g., 0:0:0 and 0:0:1), we need to handle
those too.

Also all this should only be done if device flag is supported by qemu.
2010-08-16 21:36:53 +02:00
Jamie Strandboge
8e3eeb4e1d build: fix AppArmor compilation
* src/security/virt-aa-helper.c: Add missing include.
2010-08-16 11:39:33 -06:00
Stefan Berger
cf6f8b9a97 nwfilter: extend nwfilter reload support
In this patch I am extending and fixing the nwfilter module's reload support to stop all ongoing threads (for learning IP addresses of interfaces) and rebuild the filtering rules of all interfaces of all VMs when libvirt is started. Now libvirtd rebuilds the filters upon the SIGHUP signal and libvirtd restart.

About the patch: The nwfilter functions require a virConnectPtr. Therefore I am opening a connection in qemudStartup, which later on needs to be closed outside where the driver lock is held since otherwise it ends up in a deadlock due to virConnectClose() trying to lock the driver as well.

I have tested this now for a while with several machines running and needing the IP address learner thread(s). The rebuilding of the firewall rules seems to work fine following libvirtd restart or a SIGHUP. Also the termination of libvirtd worked fine.
2010-08-16 12:59:54 -04:00
Eric Blake
a3bc82dcfb build: allow mingw VPATH build
* .gnulib: Update to latest.
Reported by Matthias Bolte.
2010-08-14 12:51:55 -06:00
Matthias Bolte
7c0cbe0279 esx: Explicitly disable unused floppy devices
floppy0.present defaults to true. Therefore, it needs to be
explicitly set to false when the XML config doesn't specify the
corresponding floppy device.

Also update tests accordingly.
2010-08-14 20:16:14 +02:00
Matthias Bolte
177e17e462 Generate libvirt_qemu.def from libvirt_qemu.syms for MinGW builds 2010-08-14 19:19:24 +02:00
Eduardo Otubo
50e4908559 PHYP: Add rudimentary network driver
I changed virStorage[Open|Close] to virVIOSDriver[Open|Close] so
the network driver can use it - since the network driver deals
with Open/Close in the same way.
2010-08-14 11:16:08 -06:00
Soren Hansen
b9e1f11a2d Make umlConnectTapDevice ask brAddTap for a persistent tap device.
This patch does two things:

 * It makes umlConnectTapDevice ask brAddTap for a persistent tap by
   passing it a NULL tapfd argument.
 * Stops umlConnectTapDevice from immediately dismantling the bridge
   it just set up.

Signed-off-by: Soren Hansen <soren@linux2go.dk>
2010-08-14 10:53:25 -06:00
Soren Hansen
4358f76aa4 Close fd's of persistent tap devices
When passing a NULL tapfd argument to brAddTap, we need to close the fd
of the tap device. If we don't, libvirt will keep the fd open
indefinitely and renders the the guest unable to configure its side of
the tap device.

Signed-off-by: Soren Hansen <soren@linux2go.dk>
2010-08-14 10:48:16 -06:00
Soren Hansen
3ad8cbd3be Make sure all command line arguments get passed to UML
If umlBuildCommandLineChr fails (e.g. due to an unsupported chardev
type), it returns NULL. umlBuildCommandLine does not check for this and
sets this as an argument on the comand line, effectively ending the
argument list. This patch checks for this case and sets the chardev to
"none".

Signed-off-by: Soren Hansen <soren@linux2go.dk>
2010-08-14 10:35:33 -06:00
Stefan Berger
753d76e0cd nwfilter: Discard class D,E IP addresses when sniffing pkts
When sniffing the network traffic, discard class D and E IP addresses when sniffing traffic. This was a reason why filters were not correctly rebuilt on VMs on the local 192.* network when libvirt was restarted and those VMs did not use a DHCP request to get its IP address.
2010-08-13 16:41:39 -04:00
Stefan Berger
bed3a217f6 nwfilter: serialize execution of scripts with ebtables cmds
While testing the SIGHUP handling and reloading of the nwfilter driver, I found that when the filters are rebuilt and mutlipe threads handled the individual interfaces, concurrently running multiple external bash scripts causes strange failures even though the executed ebtables commands are working on different tables for different interfaces. I cannot say for sure where the concurrency problems are caused, but introducing this lock definitely helps.
2010-08-13 15:47:10 -04:00
Matthias Bolte
8b4eedc8cd Only require XDR when building libvirtd or the remote driver 2010-08-13 21:24:38 +02:00
Chris Lalancette
e80f1a7e3f Move the tunnelled migration unix socket to /var/lib/libvirt/qemu
Since the qemu process is running as qemu:qemu, it can't actually
look at the unix socket in /var/run/libvirt/qemu which is owned by
root and has permission 700.  Move the unix socket to
/var/lib/libvirt/qemu, which is already owned by qemu:qemu.

Thanks to Justin Clift for test this out for me.

Signed-off-by: Chris Lalancette <clalance@redhat.com>
2010-08-13 08:39:53 -04:00
Chris Lalancette
a2f0b6b81d Fix tunnelled migration with qemu running as qemu:qemu.
The problem is that on the source of the migration, libvirtd
is responsible for creating the unix socket over which the data
will flow.  Since libvirtd is running as root, this file will
be created as root.  When the qemu process running as qemu:qemu
goes to access the unix file to write data to it, it will get
permission denied and fail.  Make sure to change the owner
of the unix file to qemu:qemu.

Thanks to Justin Clift for testing this patch out for me.

Signed-off-by: Chris Lalancette <clalance@redhat.com>
2010-08-13 08:39:46 -04:00
Stefan Berger
18b6323ab9 Fix valgrind complaints when using kill -SIGHUP on libvirtd
This patch fixes a couple of complaints from valgrind when tickling libvirtd with SIGHUP.

The first two files contain fixes for memory leaks. The 3rd one initializes an uninitialized variable. The 4th one is another memory leak.
2010-08-12 16:30:11 -04:00
Daniel Veillard
986c208695 qemu: avoid calling the balloon info command if disabled
Basically a followup of the previous patch about balloon desactivation
if desactivated, to not ask for balloon information to qemu as we will
just get an error back.
 This can make a huge difference in the time needed for domain
information or list when a machine is loaded, and balloon has been
desactivated in the guests.

* src/qemu/qemu_driver.c: do not get the balloon info if the balloon
  suppor is disabled
2010-08-12 18:32:16 +02:00
Jiri Denemark
e26672f786 bridge: Add --dhcp-no-override option to dnsmasq
--dhcp-no-override description from dnsmasq man page:

      Disable  re-use  of  the  DHCP servername and filename fields as
      extra option space. If it can, dnsmasq moves the boot server and
      filename  information  (from  dhcp-boot)  out of their dedicated
      fields into DHCP options. This make extra space available in the
      DHCP  packet  for options but can, rarely, confuse old or broken
      clients. This flag forces "simple and safe" behaviour  to  avoid
      problems in such a case.

It seems some virtual network card ROMs are this old/buggy so let's add
--dhcp-no-override as a workaround for them. We don't use extra DHCP
options so this should be safe. The option was added in dnsmasq-2.41,
which becomes the minimum required version.
2010-08-12 16:38:19 +02:00
Matthias Bolte
145d6cb05c esx: Improve VMX file name parsing and formatting
For parsing try to match by datastore mount path first, if that
fails fallback to /vmfs/volumes/<datastore>/<path> parsing. This
also fixes problems with GSX on Windows. Because GSX on Windows
doesn't use /vmfs/volumes/ style file names.

For formatting use the datastore mount path too, instead of using
/vmfs/volumes/<datastore>/<path> as fixed format.
2010-08-12 01:16:16 +02:00
Jiri Denemark
6f42d3253a bridge: Fix potential segfault when preparing dnsmasq arguments
We add --dhcp-lease-max=xxx argument when network->def->nranges > 0 but
we only allocate space for in the opposite case :-) I guess we are lucky
enough to miscount somewhere else so that we actually allocate more
space than we need since no-one has hit this bug so far.
2010-08-11 20:42:08 +02:00
Matthias Bolte
3de8245560 esx: Split VMX code into a general and an ESX specific part
Introduce esxVMX_Context containing functions pointers to
glue both parts together in a generic way.

Move the ESX specific part to esx_driver.c.

This is a step towards making the VMX code reusable in a
potential VMware Workstation and VMware Player driver.
2010-08-11 16:17:50 +02:00
Daniel Veillard
79c27a620a allow memballoon type of none to desactivate it
The balloon device is automatically added to qemu guests if supported,
but it may be useful to desactivate it. The simplest to not change the
existing behaviour is to allow
  <memballoon type="none"/>
as an extra option to desactivate it (it is automatically added if the
memballoon construct is missing for the domain).
The following simple patch just adds the extra option and does not
change the default behaviour but avoid creating a balloon device if
type="none" is used.

* docs/schemas/domain.rng: add the extra type attribute value
* src/conf/domain_conf.c src/conf/domain_conf.h: add the extra enum
  value
* src/qemu/qemu_conf.c: if enum is NONE, don't activate the device,
  i.e. don't pass the args to qemu/kvm
2010-08-11 11:28:17 +02:00
Jiri Denemark
0495fe59ad Avoid unnecessary bootstrap runs in VPATH builds 2010-08-11 09:20:26 +02:00
Doug Goldstein
efdd0ffca3 Add a detailed message when tap device add fails
Added a more detailed error message when adding a tap devices fails and
the kernel is missing tun support.

Signed-off-by: Doug Goldstein <cardoe@gentoo.org>
2010-08-10 16:40:04 -06:00
Doug Goldstein
c0b0e8d07d Fix return value usage
Fix the error checking to use the return value from brAddTap() instead
of checking the current errno value which might have been changed by
clean up calls inside of brAddTap().

Signed-off-by: Doug Goldstein <cardoe@gentoo.org>
2010-08-10 16:38:37 -06:00
Eric Blake
d413e5d765 nodeinfo: skip offline CPUs
https://bugzilla.redhat.com/622515 - When hot-unplugging CPUs,
libvirt failed to start a guest that had been pinned to CPUs that
were still online.

Tested on a dual-core laptop, where I also discovered that, per
http://www.cyberciti.biz/files/linux-kernel/Documentation/cpu-hotplug.txt,
/sys/devices/system/cpu/cpu0/online does not exist on systems where it
cannot be hot-unplugged.

* src/nodeinfo.c (linuxNodeInfoCPUPopulate): Ignore CPUs that are
currently offline.  Detect readdir failure.
(parse_socket): Move guts...
(get_cpu_value): ...to new function, shared with...
(cpu_online): New function.
2010-08-10 16:25:56 -06:00
Jiri Denemark
d1e5676c0d qemu: Hack around asynchronous device_del
device_del command is not synchronous for PCI devices, it merely asks
the guest to release the device and returns. If the host wants to use
that device before the guest actually releases it, we are in big
trouble. To avoid this, we already added a loop which waits up to 10
seconds until the device is actually released before we do anything else
with that device. But we only added this loop for managed PCI devices
before we try reattach them back to the host.

However, we need to wait even for non-managed devices. We don't reattach
them automatically, but we still want to prevent the host from using it.
This was revealed thanks to sVirt: when we relabel sysfs files
corresponding to the PCI device before the guest finished releasing the
device, qemu is no longer allowed to access those files and if it wants
(as a result of guest's request) to write anything to them, it just
exits, which kills the guest.

This is not a proper fix and needs some further work both on libvirt and
qemu side in the future.
2010-08-10 16:59:49 +02:00
Eric Blake
1ddefd181b maint: update an email address preference
* AUTHORS (Soren Hansen): Update address.
* .mailmap: Alias other addresses to new preference.
2010-08-10 08:13:22 -06:00
Diego Elio Pettenò
2bd24003b9 build-sys: only build the test programs during the check phase.
This avoids building the tests when testing libvirt is not the aim.
2010-08-10 07:18:44 -06:00
Soren Hansen
92e43e6d02 Add "ubd" to the list of disk prefixes
virDiskNameToIndex has a list of disk name prefixes that it uses in the
process of finding the disk's index. This list is missing "ubd" which
is the disk prefix used for UML domains.

Signed-off-by: Soren Hansen <soren@linux2go.dk>
2010-08-10 07:16:44 -06:00
Daniel Veillard
e9a8f3c644 Extend virSocketParseAddr() to allow a NULL result pointer
That way it can be used to verify a numeric address without storing
the details
* src/util/network.c: change virSocketParseAddr to allow a null @addr
  parameter
2010-08-10 15:00:15 +02:00
Philipp Hahn
ab8b2bea47 bootloader_args is named bootargs in xen-xm
According to <xen-3.4.3/tools/python/xen/xm/create.py:158>
	gopts.var('bootargs', val='NAME',
			  fn=set_value, default=None,
			  use="Arguments to pass to boot loader")
the "bootloader_args" parameter needs to be translated into "bootargs"
when using "virsh domxml-to-native xen-xm".
The reverse direction (domxml-from-native) is already okay.

This patch fixes domxml-to-native and adds two test files to catch this
problem.

Signed-off-by: Philipp Hahn <hahn@univention.de>
2010-08-09 16:11:25 -06:00
Eduardo Otubo
6324949fb1 phyp: refactor phypListDomainsGeneric to eliminate buffer overflow
src/phyp/phyp_driver.c:phypListDomainsGeneric was crashing due to a buffer
overflow if any line returned from virRun wasn't <=10 characters.

Since virStrToLong_i recognizes any non-numeric as a terminator (not
just NULL), there actually is no need to copy the number into a
separate string anyway, so this patch eliminates that copy, the fixed
length buffer, and therefore the potential to overflow.

This change also provided the oppurtunity to eliminate the character
counting loop, instead using the return from virStrToLong_i to point
past the end of the number, then simply skip the \n to get to the
next.
2010-08-06 11:22:09 -04:00
Justin Clift
30ba39a13e docs: fix an incorrect keyword in updated hooks page 2010-08-06 23:33:05 +10:00
Diego Elio Pettenò
e7e9456bb4 build-sys: fix build when daemon is disabled by not installing libvirtd.8
Since the rule to build libvirtd.8 is within the WITH_LIBVIRTD conditional,
so declare the man page in there as well. Without this change, build
without daemon will fail.
2010-08-06 06:45:18 -06:00
Justin Clift
bf3211c95a docs: significant expansion of custom hook script information 2010-08-06 21:50:33 +10:00
Doug Goldstein
0890a70a19 Fix return value usage
Fix the error checking to use the return value from brAddTap() instead
of checking the current errno value which might have been changed by
clean up calls inside of brAddTap().

Signed-off-by: Doug Goldstein <cardoe@gentoo.org>
2010-08-05 17:05:16 -06:00
Doug Goldstein
bcc8b58be3 qemu: improve error if tun device is missing
Added a more detailed error message when adding a tap devices fails and
the kernel is missing tun support.

Signed-off-by: Doug Goldstein <cardoe@gentoo.org>
2010-08-05 17:04:38 -06:00
Eric Blake
5f211d4bc5 build: rerun bootstrap if po/Makevars got nuked
There has been a frequent complaint of:

make[2]: Entering directory `/home/remote/eblake/libvirt/po'
make[2]: *** No rule to make target `/config.status', needed by `Makefile'.  Stop.

It happens after nuking and regenerating the po directory,
which is a common action after running anything like
'make dist' or 'make rpm' that dirties all the .po files.

Teach autogen.sh that it must regenerate po/Makevars to avoid
the missing variable declaration, and teach cfg.mk to recognize
that a nuked po directory is cause to rerun autogen.sh.

* cfg.mk (_update_required): Check for po/Makevars.
* autogen.sh (bootstrap): Run bootstrap if it got lost.
Diagnosed by Justin Clift.
2010-08-04 14:36:14 -06:00
Daniel Veillard
634ea3faae Do not use boot=on on IDE device
the followup on the boot=on problem, basically it's not needed to
specify it when booting out of IDE devices when using KVM
* src/qemu/qemu_conf.c: do not use boot=on for IDE devices
* tests/qemuxml2argvdata/qemuxml2argv*.args: this changes the output
  for 5 of the tests
2010-08-04 18:31:44 +02:00
Daniel Veillard
d3d33c8281 Release of libvirt-0.8.3
* configure.ac docs/news.html.in libvirt.spec.in: updates
* po/*.po*: update and regenerated
2010-08-04 15:03:25 +02:00
Jiri Denemark
bf0bf4e783 qemu: Fix PCI address allocation
Patch version revamped by Eric Blake <eblake@redhat.com> of Jiri
Denemark <jdenemar@redhat.com> original patch

When attaching a PCI device which doesn't explicitly set its PCI
address, libvirt allocates the address automatically. The problem is
that when checking which PCI address is unused, we only check for those
with slot number higher than the highest slot number ever used.

Thus attaching/detaching such device several times in a row (31 is the
theoretical limit, less then 30 tries are enough in practise) makes any
further device attachment fail. Furthermore, attaching a device with
predefined PCI address to 0:0:31 immediately forbids attachment of any
PCI device without explicit address.

This patch changes the logic so that we always check all PCI addresses
before we say there is no PCI address available.

Modifications from v1: revert back to remembering the last slot
reserved, but allow wraparound to not be limited by the end.
In this way, slots are still assigned in the same order as
before the patch, rather than filling in the gaps closest to
0 and risking making windows guests mad.

* src/qemu/qemu_conf.c: fix pci reservation code to do a round-robbin
  check of all available PCI splot availability before failing.
2010-08-04 14:46:06 +02:00
Jean-Baptiste Rouault
9cbc3c8e06 OpenVZ: implement suspend/resume driver APIs
* src/openvz/openvz_driver.c: implements openvzDomainSuspend and
  openvzDomainResume
2010-08-04 14:00:07 +02:00
Laine Stump
6328dfcb67 Don't leak delay string when freeing virInterfaceBridgeDefs 2010-08-03 11:37:05 -04:00
Laine Stump
7c5f80e2f0 Fix build error in virsh.c
Another gettext string with no format args sent to printf as a format string.
2010-08-03 10:37:34 -04:00
Matthias Bolte
14954fb8cb esx: Set storage pool target path to host.mountInfo.path
Now all storage pool types expose the target path.
2010-08-02 22:25:15 +02:00
Matthias Bolte
5254546bba esx: Make storage pool lookup by name and UUID more robust
Don't rely on summary.url anymore, because its value is different
between an esx:// and vpx:// connection. Use host.mountInfo.path
instead.

Don't fallback to lookup by UUID (actually lookup by absolute path)
in esxVI_LookupDatastoreByName when lookup by name fails. Add a
seperate function for this: esxVI_LookupDatastoreByAbsolutePath
2010-08-02 22:25:15 +02:00
Matthias Bolte
e4938ce2f1 esx: Restrict vpx:// to handle a single host in a vCenter
Now a vpx:// connection has an explicitly specified host. This
allows to enabled several functions for a vpx:// connection
again, like host UUID, hostname, general node info, max vCPU
count, free memory, migration and defining new domains.

Lookup datacenter, compute resource, resource pool and host
system once and cache them. This simplifies the rest of the
code and reduces overall HTTP(S) traffic a bit.

esx:// and vpx:// can be mixed freely for a migration.

Ensure that migration source and destination refer to the
same vCenter. Also directly encode the resource pool and
host system object IDs into the migration URI in the prepare
function. Then directly build managed object references in
the perform function instead of re-looking up already known
information.
2010-08-02 22:25:15 +02:00
Matthias Bolte
9f85668bd7 esx: Map some managed object types
Datacenter, ComputeResource and HostSystem will be used for
simplified handling and caching.
2010-08-02 22:25:15 +02:00
Matthias Bolte
ac041072f8 esx: Parse the path of the URI
The path will be used to specify the datacenter, compute resource
and host system to be used with a vpx:// connection.
2010-08-02 22:25:15 +02:00