Eric Blake [Tue, 31 Aug 2010 22:27:24 +0000 (16:27 -0600)]
build: add some modules
snprintf is currently implicitly picked up by getaddrinfo, but we
might as well make it explicit so that mingw doesn't break if
getaddrinfo changes to drop the dependency.
func doesn't matter for gcc compilation, but may help other compilers
cope with our use of __func__.
* bootstrap.conf (gnulib_modules): Add snprintf and func.
Ryan Harper [Tue, 24 Aug 2010 16:09:00 +0000 (11:09 -0500)]
virsh: remove driver check from attach-disk command
Virsh shouldn't check for driver support but rather let the backend handled this.
After removing the check, I can successfully attach file-based images to a qemu
VM with attach-disk.
% virsh attach-disk vm2 /images/test02.img vdc --driver qemu --type disk --subdriver raw
Disk attached successfully
Soren Hansen [Wed, 25 Aug 2010 09:03:42 +0000 (11:03 +0200)]
Explicitly pass uml_dir argument to user-mode-linux
uml_dir overrides user-mode-linux's default of ~/.uml. This is needed
for a couple of different reasons:
libvirt expects this to default to virGetUserDirectory(geteuid()) +
'/.uml'. However, user-mode-linux actually uses the HOME environment
variable to determine where to look for the uml sockets, but if running
libvirtd under sudo (which I routinely do during development), $HOME is
pointing at my user's homedir, while my euid is 0, so libvirt looks in
/root.
Also (and this was my actual motivation for this patch), if HOME isn't
set at all, user-mode-linux utterly fails. Looking at the code, it seems
it's meant to emit a warning, but alas, it doesn't for some reason.
If running libvirtd from upstart, HOME is not set, so any system using
upstart will need this change.
Jim Fehlig [Tue, 24 Aug 2010 17:31:14 +0000 (11:31 -0600)]
Add blktap2 support to xend driver
Xen4.0 includes a new blktap2 implementation, which is specified
with 'tap2' prefix. AFAICT it's configuration syntax is identical
to blktap, with exception of 'tap2' vs 'tap' prefix. This patch
takes the simple approach of accepting and generating sexp
containing 'tap2' prefix.
Eduardo Otubo [Tue, 17 Aug 2010 19:04:49 +0000 (16:04 -0300)]
PHYP: Bad comparison when checking for existing domain name
When creating a new domain from XML, the check for an existing
domain name should compare the return of the function to a valid
LPAR ID (!= -1) and not to error (== -1).
The check was altered in 8c48743b9737ad4d246ab6043fd299316f9a2091
and got too strict, I've no clue how that snuck in. This check
makes every try to open a connection using the ESX driver fail
with an invalid argument error.
Revert the change to the check and add a comment to prevent future
mistakes with this check.
Jiri Denemark [Wed, 25 Aug 2010 12:07:26 +0000 (14:07 +0200)]
Move libvirt-guests init script and config to tools
Since libvirt-guests init script and its configuration do not require
libvirtd to be running/installed, it was a bad idea to put them into
daemon directory. libvirt.spec even includes these files in
libvirt-client subpackage, which may result in build failure for
client-only builds when the whole daemon directory is just skipped.
When finding a sparse NUMA topology, libnuma will return ENOENT
the first time it is invoked. On subsequent invocations it
will return success, but with an all-1's CPU mask. Check for
this, to avoid polluting the capabilities XML with 4096 bogus
CPUs
Add explicit warning messages when failing to serialize to XDR
When libvirtd fails to serialize a message to XDR the client
connection is terminated immediately. To enable this to be
diagnosed, log the message which caused the problem on the
server
Soren Hansen [Mon, 23 Aug 2010 11:25:50 +0000 (13:25 +0200)]
Allow chardev of type 'file' for UML domains.
Like the comment suggested, we just open the file and pass the file
descriptor to uml. The input "stream" is set to "null", since I couldn't
find any useful way to actually use a file for input for a chardev and
this also mimics what e.g. QEmu does internally.
Matthias Bolte [Sat, 21 Aug 2010 16:49:18 +0000 (18:49 +0200)]
esx: Improve object-by-type lookup performance
Instead of using one big traversal spec for lookup use a set of
more fine grained traversal specs that are selected based on the
actual needs of the lookup.
This gives up to 20% speedup for certain operations like domain
listing due to less HTTP(S) traffic.
Jiri Denemark [Mon, 23 Aug 2010 13:43:51 +0000 (15:43 +0200)]
xen tests: Fix PV-VFB tests with RHEL-5 API
RHEL-5 Xen doesn't support the old style vnc configuration. In sexpr, we
can't really check it with rhel5-api turned on. However, for XM
configuration files it's sufficient to use cfg version 1 instead of 2.
Jiri Denemark [Mon, 23 Aug 2010 12:58:08 +0000 (14:58 +0200)]
xen tests: Fix missing "type ioemu" with rhel5-api
The most common cause of errors with rhel5-api turn on was missing
"(type ioemu)" in sexpr or its equivalent in XM configuration file. This
happens because the presence of that part in sexpr (or cfg) depends on
xen version the host is running. Let's avoid it by explicitly specifying
interface model which ensures "type ioemu" will always be emitted.
This patch adds
<model type='e1000'/>
withing the interface element in all affected xml files. And
(model 'e1000')
to all corresponding sexpr files with similar fix to cfg files. Such
configuration works regardless on Xen version.
Eric Blake [Fri, 20 Aug 2010 23:35:54 +0000 (17:35 -0600)]
xenapi: support xenapi 5.6.0 headers
* src/xenapi/xenapi_driver.c (xenapiDomainGetInfo): Avoid using
XEN_VM_POWER_STATE_UNKNOWN, which disappeared in newer xenapi.
* src/xenapi/xenapi_utils.c (mapPowerState): Likewise.
Previously QEMU enabled KQEMU by default and had -no-kqemu.
0.11.x switched to requiring -enable-kqemu. 0.12.x dropped
kqemu entirely. This patch adds support for -enable-kqemu
so 0.11.x works. It replaces a huge set of if() with a
switch() to make the code a bit more readable.
* src/qemu/qemu_conf.c, src/qemu/qemu_conf.h: Support
-enable-kqemu
Matthias Bolte [Sun, 8 Aug 2010 18:45:12 +0000 (20:45 +0200)]
esx: Use MD5 sum of mount path as storage pool UUID
With the previous storage pool UUID source not all storage pools
had a proper UUID, especially GSX storage pools. The mount path
is unique per host and cannot change during the lifetime of the
datastore. Therefore, it's MD5 sum can be used as UUID.
Use gnulib's crypto/md5 module to generate the MD5 sum.
Jiri Denemark [Fri, 20 Aug 2010 11:57:35 +0000 (13:57 +0200)]
qemu: Remove code duplication
We already filled the PCI address structure when we checked whether it's
free or not, so let's just use the structure here instead of filling it
again.
Patrick Dignan [Tue, 17 Aug 2010 17:44:27 +0000 (12:44 -0500)]
storage: add support for Vendor and Model in XML
I wrote a patch to add support for listing the Vendor and Model of a
storage pool in the storage pool XML. This would allow vendor
extensions of specific devices. The patch includes a test for the new
attributes as well.
Eric Blake [Mon, 16 Aug 2010 21:21:38 +0000 (15:21 -0600)]
uml: fix logic bug in checking reply length
* src/uml/uml_driver.c (umlMonitorCommand): Validate that enough
bytes were read to dereference both res.length, and that many
bytes from res.data.
Reported by Soren Hansen.
Eric Blake [Wed, 18 Aug 2010 19:43:26 +0000 (13:43 -0600)]
build: fix compiler warning
node_device/node_device_driver.c: In function 'nodeDeviceVportCreateDelete':
node_device/node_device_driver.c:423: error: implicit declaration of function 'stat' [-Wimplicit-function-declaration]
Daniel Veillard [Tue, 17 Aug 2010 16:30:17 +0000 (18:30 +0200)]
xen: Fix scheduler setting problems
Doing `virsh schedinfo rhel5u3 --cap 65535' the hypervisor does the
call, but does not change the value nor raise an error. Best is just to
consider it's not in the allowed values. The problem is that the error
won't be output since the xend driver will then be called and raise an
error
error: this function is not supported by the hypervisor: unsupported
in xendConfigVersion < 4
which will override the useful information from
xenUnifiedDomainSetSchedulerParameters(). So best is to also invert the
order in which the xen sub-drivers are called.
* src/xen/xen_hypervisor.c: mark 65535 cap value as out of bound
* src/xen/xen_hypervisor.c: reverse the order of the calls to the xen
sub drivers to get the error message if needed
Dave Allan [Tue, 17 Aug 2010 15:21:16 +0000 (17:21 +0200)]
nodedev: Fix sysfs paths for vport operations
Some kernels, such as the one used in RHEL-5, have vport_create and
vport_delete operation files in /sys/class/scsi_host/hostN directory
instead of /sys/class/fc_host/hostN. Let's check both paths for
compatibility reasons.
This also removes unnecessary '/' characters from sysfs paths containing
LINUX_SYSFS_FC_HOST_PREFIX.
Daniel Berrange [Mon, 9 Aug 2010 12:16:04 +0000 (14:16 +0200)]
remote: Fix incorrect use of private data field
NodeDeviceCreateXML and NodeDeviceDestroy methods added for NPIV were
using the wrong privateData field for the remote driver. This doesn't
impact KVM, since the remote driver handles everything, thus
privateData == devMonPrivateData. It does impact Xen though, because
the remote driver only handles a subset of methods and thus
privateData != devMonPrivateData.
Chris Lalancette [Fri, 13 Aug 2010 13:23:11 +0000 (09:23 -0400)]
Fix up qemu domain save/managed save locking.
The current version of the qemu managed save implementation
is subject to a race where the domain shuts down between
the time that we start the command and the time that we
actually try to do the save. Close this race by making
qemuDomainSaveFlags() expect both the driver and the passed-in
vm object to be locked before executing.
Signed-off-by: Chris Lalancette <clalance@redhat.com>
Jiri Denemark [Fri, 13 Aug 2010 14:16:19 +0000 (16:16 +0200)]
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.
Stefan Berger [Mon, 16 Aug 2010 16:59:54 +0000 (12:59 -0400)]
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.
Matthias Bolte [Fri, 6 Aug 2010 00:02:03 +0000 (02:02 +0200)]
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.
Eduardo Otubo [Thu, 12 Aug 2010 14:33:12 +0000 (11:33 -0300)]
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.
Soren Hansen [Thu, 12 Aug 2010 13:06:34 +0000 (15:06 +0200)]
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.
Soren Hansen [Wed, 11 Aug 2010 21:51:41 +0000 (23:51 +0200)]
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.
Soren Hansen [Thu, 12 Aug 2010 13:42:34 +0000 (15:42 +0200)]
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".
Stefan Berger [Fri, 13 Aug 2010 20:41:39 +0000 (16:41 -0400)]
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.
Stefan Berger [Fri, 13 Aug 2010 19:47:10 +0000 (15:47 -0400)]
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.
Chris Lalancette [Thu, 12 Aug 2010 16:51:31 +0000 (12:51 -0400)]
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>
Chris Lalancette [Thu, 12 Aug 2010 14:01:31 +0000 (10:01 -0400)]
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>
Daniel Veillard [Thu, 12 Aug 2010 16:32:16 +0000 (18:32 +0200)]
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
Jiri Denemark [Wed, 11 Aug 2010 18:25:09 +0000 (20:25 +0200)]
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.
Matthias Bolte [Sat, 7 Aug 2010 17:58:29 +0000 (19:58 +0200)]
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.
Jiri Denemark [Wed, 11 Aug 2010 15:47:18 +0000 (17:47 +0200)]
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.
Daniel Veillard [Wed, 11 Aug 2010 09:28:17 +0000 (11:28 +0200)]
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
Doug Goldstein [Tue, 10 Aug 2010 21:43:29 +0000 (16:43 -0500)]
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().
Eric Blake [Tue, 10 Aug 2010 21:33:37 +0000 (15:33 -0600)]
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.
Jiri Denemark [Mon, 9 Aug 2010 12:14:34 +0000 (14:14 +0200)]
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.
Soren Hansen [Tue, 10 Aug 2010 11:46:46 +0000 (13:46 +0200)]
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.
Daniel Veillard [Tue, 10 Aug 2010 13:00:15 +0000 (15:00 +0200)]
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
Philipp Hahn [Thu, 5 Aug 2010 15:07:18 +0000 (17:07 +0200)]
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.
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.
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.
Doug Goldstein [Thu, 5 Aug 2010 19:12:52 +0000 (14:12 -0500)]
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().