Peter Krempa [Wed, 11 Nov 2015 09:28:47 +0000 (10:28 +0100)]
qemu: cgroup: Remove now unreachable check
Since commit 0c04906fa the check for priv->cgroup doesn't make sense as
the calls to virCgroupHasController return the same information. Remove
it and move it's comment partially to the new check.
The already spurious check was also later copied to the iothreads code.
Peter Krempa [Tue, 3 Nov 2015 07:47:23 +0000 (08:47 +0100)]
conf: Add helper to get pointer to a certain vCPU definition
Once more stuff will be moved into the vCPU data structure it will be
necessary to get a specific one in some ocasions. Add a helper that will
simplify this task.
Peter Krempa [Fri, 30 Oct 2015 15:29:45 +0000 (16:29 +0100)]
qemu: refactor qemuDomainHotunplugVcpus
Refactor the code flow so that 'exit_monitor:' can be removed.
This patch moves the auditing functions into places where it's certain
that hotunplug was or was not successful and reports errors from
qemuMonitorGetCPUInfo properly.
Peter Krempa [Fri, 30 Oct 2015 11:46:33 +0000 (12:46 +0100)]
qemu: Refactor qemuDomainHotplugVcpus
Refactor the code flow so that 'exit_monitor:' can be removed.
This patch also moves the auditing and setting of the new vCPU count
right to the place where the hotplug happens, since it's possible that
the hotplug succeeds and adds a cpu while other stuff fails.
Lastly, failures of qemuMonitorGetCPUInfo are now reported rather than
ignored. The function retuns 0 if it "successfully" detected 0 threads.
Peter Krempa [Fri, 30 Oct 2015 08:36:27 +0000 (09:36 +0100)]
qemu: cpu hotplug: Move loops to qemuDomainSetVcpusFlags
qemuDomainHotplugVcpus/qemuDomainHotunplugVcpus are complex enough in
regards of adding one CPU. Additionally it will be desired to reuse
those functions later with specific vCPU hotplug.
Move the loops for adding vCPUs into qemuDomainSetVcpusFlags so that the
helpers can be made simpler and more straightforward.
Peter Krempa [Thu, 29 Oct 2015 14:49:26 +0000 (15:49 +0100)]
qemu: cpu hotplug: Fix error handling logic
The cpu hotplug helper functions used negative error handling in a part
of them, although some code that was added later didn't properly set the
error codes in some cases. This would cause improper error messages in
cases where we couldn't modify the numa cpu mask and a few other cases.
Fix the logic by converting it to the regularly used pattern.
Peter Krempa [Tue, 27 Oct 2015 06:29:53 +0000 (07:29 +0100)]
qemu: qemuDomainSetVcpusAgent: re-check agent before calling it the again
With a very unfortunate timing, the agent might vanish before we do the
second call while the locks were down. Re-check that the agent is
available before attempting it again.
Pavel Hrdina [Thu, 3 Dec 2015 12:38:56 +0000 (13:38 +0100)]
libxl: copy persistent domain definition while starting a guest
We should make a copy of current definition to preserve a persistent
definition, because we later update the definition with live changes.
The live definition is discarded on domain shutdown and replaced by the
copy we make before starting the domain.
Pavel Hrdina [Sat, 28 Nov 2015 04:33:55 +0000 (05:33 +0100)]
xen: use virDomainDefPostParse for parsing XM/XL/SEXPR cofings
This change ensures to call driver specific post-parse code to modify
domain definition after parsing hypervisor config the same way we do
after parsing XML.
Pavel Hrdina [Sun, 29 Nov 2015 02:55:32 +0000 (03:55 +0100)]
lxc: use virDomainDefPostParse for parsing LXC config string
This change ensures to call driver specific post-parse code to modify
domain definition after parsing hypervisor config the same way we do
after parsing XML.
Pavel Hrdina [Sat, 28 Nov 2015 04:12:33 +0000 (05:12 +0100)]
vmware/vmx: use virDomainDefPostParse after parsing vmx config
This change ensures to call driver specific post-parse code to modify
domain definition after parsing hypervisor config the same way we do
after parsing XML.
A migration regression was introduced by this commit. When migrating
a domain, its active XML is sent to the destination libvirtd, where
it is parsed as inactive XML. d2e5538b copied the libxl generated
interface name into the active config, which was being passed to the
migration destination and being parsed into inactive config. Attempting
to start the config could result in failure if an interface with the
same generated name already exists.
The qemu driver behaves similarly, but the parser contains a hack to
skip interface names starting with 'vnet' when parsing inactive XML.
We could extend the hack to skip names starting with 'vif' too, but a
better fix would be to expose these hypervisor-specific interface name
prefixes in capabilities. See the following discussion thread for more
details
rpm: explicitly enable & start virtlogd on install
When installing the libvirt-daemon RPM, we have a %post rule to
enable the libvirtd.service, virtlockd.socket and virtlogd.socket
files. This is only done, however, when the RPM is first installed,
not when upgrading RPMs. So virtlogd will not get activated on
upgrading, which is a problem as libvirt qemu driver will expect
it to be available by default.
This adds a trigger that is run when uninstalling libvirt-daemon
older than 1.3.0 that will enable & start virtlogd.socket if
libvirtd is enabled and/or started. Using the trigger rather
than %post ensures that it only runs once, allowing admins to
disable it explicitly thereafter without future upgrades
re-enabling it.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
libvirtd: enable virtlockd/virtlogd socket activation on install
When someone does 'systemctl enable libvirtd.service' we should
also enable virtlockd.socket/virtlogd.socket, so that they can
be auto-activated if libvirtd tries to access the sockets.
Without this, people have to manually enable the units themselves
via 'systemctl enable virtdlogd.socket'.
This also ensures that if distros uses 'systemctl preset' for
enabling 'libvirtd.service', then the virtdlogd.socket gets
enabled without having to wait for the distro to update their
presets file.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The current virtlogd RPC protocol provides the ability to
handle log files associated with QEMU stdout/err. The log
protocol messages take the virt driver, domain name and
use that to form a log file path. This is quite restrictive
as it prevents us re-using the same RPC protocol messages
for logging to char device backends where the filename
can be arbitrarily user specified. It is also bad because
it means we have 2 separate locations which have to decide
on logfile name.
This change alters the RPC protocol so that we pass the
desired log file path along when opening the log file
initially. Now the virt driver is exclusively in charge
of deciding the log filename
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
logging: preserve driver, dom name & uuid against log file
The virt driver, dom name and uuid associated with a log
file are important pieces of metadata to keep around for
sake of future enhancements to virtlogd. Currently we
discard them after opening the log file, but we should
preserve them, even across restarts.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
virDomainSetMemory is documented to change only runtime configuration of
running domain. However, that's not true of all hypervisors supported.
Seems as though when commit id '0f2e50be5' added the current flag, the
function description should have been updated similar to when commit id
'c1795c52' updated the virDomainSetMaxMemory description. Especially since
commit id '80427f1d' updated the virsh 'setmem' description to indicate
"behavior is different depending on hypervisor."
This patch will update the description to match current functionality.
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Boris Fiuczynski [Mon, 30 Nov 2015 11:06:01 +0000 (12:06 +0100)]
qemu: Automatic SCSI controller creation in SCSI disk hotplug broken
When a SCSI disk is hotplugged to a domain that does not have the required
SCSI controller already defined and loaded the following internal error occurs
error: Failed to attach device from scsi_disk.xml
error: internal error: Could not find scsi controller with index 0 required for device
Commit 0260506c added in method qemuBuildDriveDevStr a lookup of the controller
alias. The internal error occurs because in method qemuDomainAttachSCSIDisk
the automatic creation of the potentially missing SCSI controller occurs after
calling qemuBuildDriveDevStr.
This patch reverses the calling sequence.
Signed-off-by: Boris Fiuczynski <fiuczy@linux.vnet.ibm.com> Reviewed-by: Bjoern Walk <bwalk@linux.vnet.ibm.com> Reviewed-by: Stefan Zimmermann <stzi@linux.vnet.ibm.com>
Often when debugging bug reports one is given a copy of the file
from /var/log/libvirt/qemu/$NAME.log along with other supporting
files. In a number of cases I've been given sets of files which
were from different machines. Including the hostname in the QEMU
log file will help identify when the bug reporter is providing
bad information.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The log file descriptor associated with the virRotatingFile
struct should be marked close-on-exec, as even when virtlogd
re-exec's itself it expect to open the log file fresh. It
does not need to preserve the logfile handles, only the network
client FDs.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Peter Krempa [Tue, 1 Dec 2015 13:08:37 +0000 (14:08 +0100)]
qemu: domain: Prevent overflows in memory alignment code
Since libvirt for dubious historical reasons stores memory size as
kibibytes, it's possible that the alignments done in the qemu code
overflow the the maximum representable size in bytes. The XML parser
code handles them in bytes in some stages. Prevent this by doing
overflow checks when alinging the size and add a test case.
Peter Krempa [Tue, 1 Dec 2015 13:59:47 +0000 (14:59 +0100)]
schema: Allow > UINT_MAX KiB of memory for NUMA nodes
Using more than 4TiB of memory per NUMA node would not be possible to
express in the XML without violating the schema. Not that such boxes
would be common, but we should use a longer type at this point.
The pattern is not necessary since libvirt redefines the type already in
basictypes.rng with the same pattern.
Boris Fiuczynski [Mon, 30 Nov 2015 11:05:59 +0000 (12:05 +0100)]
conf: Revert some code to resolve issues for hostdev hotplug
This patch reverts parts of commits 0d8b24f6b and 0785966d dealing with
the addition of a controller during virDomainHostdevAssignAddress. This
caused a regression for the hostdev hotplug path which assumes the
qemuDomainFindOrCreateSCSIDiskController will add the new controller
during qemuDomainAttachHostSCSIDevice to both the running domain and
the domain def controller list when the controller doesn't yet exist
(whether due to no SCSI controllers existing or the addition of a new
controller because existing ones are full).
Since commit id 0d8b24f6 will call virDomainHostdevAssignAddress during
virDomainDeviceDefPostParseInternal which is called either during domain
definition post processing (via an iterator during virDomainDefPostParse)
or directly from virDomainDeviceDefParse during hotplug, the change
broke the "side effect" of being able to add both a hostdev and controller
to the running domain.
The regression would only be seen if the running domain didn't have a
SCSI controller already defined or if the existing SCSI controller was
"full" of devices and a new controller needed to be created.
This patch will also add some extra comments to the code to avoid a
similar future change.
Signed-off-by: Boris Fiuczynski <fiuczy@linux.vnet.ibm.com> Reviewed-by: Bjoern Walk <bwalk@linux.vnet.ibm.com> Reviewed-by: Stefan Zimmermann <stzi@linux.vnet.ibm.com>
Joao Martins [Mon, 23 Nov 2015 18:57:00 +0000 (18:57 +0000)]
libxl: implement virDomainInterfaceStats
Introduce support for domainInterfaceStats API call for querying
network interface statistics. Consequently it also enables the
use of `virsh domifstat <dom> <interface name>` command plus
seeing the interfaces names instead of "-" when doing
`virsh domiflist <dom>`.
After successful guest creation we fill the network
interfaces names based on domain, device id and append suffix
if it's emulated in the following form: vif<domid>.<devid>[-emu].
We extract the network interfaces info from the libxl_domain_config
object in libxlDomainCreateIfaceNames() to generate ifname. On domain
cleanup we also clear ifname, in case it was set by libvirt (i.e.
being prefixed with "vif"). We also skip these two steps in case the name
of the interface was manually inserted by the adminstrator.
For getting the interface statistics we resort to virNetInterfaceStats
and let libvirt handle the platform specific nits. Note that the latter
is not yet supported in FreeBSD.
Ian Campbell [Thu, 26 Nov 2015 15:10:12 +0000 (15:10 +0000)]
network: selectively disable -Wcast-align in virNetDevParseDadStatus
Commit 0f7436ca54c9 "network: wait for DAD to finish for bridge IPv6 addresses"
results in:
CC util/libvirt_util_la-virnetdevmacvlan.lo
util/virnetdev.c: In function 'virNetDevParseDadStatus':
util/virnetdev.c:1319:188: error: cast increases required alignment of target type [-Werror=cast-align]
util/virnetdev.c:1332:41: error: cast increases required alignment of target type [-Werror=cast-align]
util/virnetdev.c:1334:92: error: cast increases required alignment of target type [-Werror=cast-align]
cc1: all warnings being treated as errors
on at least ARM platforms.
The three macros involved (NLMSG_NEXT, IFA_RTA and RTA_NEXT) all appear to
correctly take care of alignment, therefore suppress Wcast-align around their
uses.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Cc: Maxim Perevedentsev <mperevedentsev@virtuozzo.com> Cc: Laine Stump <laine@laine.org> Cc: Dario Faggioli <dario.faggioli@citrix.com> Cc: Jim Fehlig <jfehlig@suse.com>
The problem is that in some mingw header DATADIR is used but
gnulib defines it too. This leads to the following compile error:
CC locking/libvirt_driver_la-lock_manager.lo
In file included from /usr/i686-w64-mingw32/sys-root/mingw/include/objbase.h:66:0,
from /usr/i686-w64-mingw32/sys-root/mingw/include/ole2.h:17,
from /usr/i686-w64-mingw32/sys-root/mingw/include/wtypes.h:12,
from /usr/i686-w64-mingw32/sys-root/mingw/include/winscard.h:10,
from /usr/i686-w64-mingw32/sys-root/mingw/include/windows.h:97,
from /usr/i686-w64-mingw32/sys-root/mingw/include/winsock2.h:23,
from ../gnulib/lib/unistd.h:48,
from ../../src/util/virutil.h:29,
from ../../src/logging/log_manager.c:30:
/usr/i686-w64-mingw32/sys-root/mingw/include/objidl.h:12275:2: error: expected identifier or '(' before string constant
} DATADIR;
^
Makefile:7888: recipe for target 'logging/libvirt_driver_la-log_manager.lo' failed
The fix is to include configmake.h at the end of includes.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
virAdmConnect was named after virConnect, but after some discussions,
most of the APIs called will be working with remote daemon and starting
them virAdmDaemon will make more sense. Only possibly controversal name
is CloseCallback (de)registration, and connecting to the daemon (which
will still be Open/Close), but even this makes sense if one thinks about
the daemon being opened and closed, e.g. as file, etc.
This way all the APIs working with the daemon will start with
virAdmDaemon prefix, they will accept virAdmDaemonPtr as first parameter
and that will better suit with other namings as well (virDomain*,
virAdmServer*, etc.).
Because in virt-admin, the connection name does not refer to a struct
that would have a connect in its name, also adjust 'connname' in
clients. And because it is not used anywhere in the vsh code, move it
from there into each client.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Wang Yufei [Sat, 26 Sep 2015 12:18:03 +0000 (20:18 +0800)]
qemu_agent: fix deadlock in qemuProcessHandleAgentEOF
If VM A is shutdown a by qemu agent at appoximately the same time
an agent EOF of VM A happened, there's a chance that deadlock may occur:
qemuProcessHandleAgentEOF in main thread
A) priv->agent = NULL; //A happened before B
//deadlock when we get agent lock which's held by worker thread
qemuAgentClose(agent);
qemuDomainObjExitAgent called by qemuDomainShutdownFlags in worker thread
B) hasRefs = virObjectUnref(priv->agent); // priv->agent is NULL,
// return false
if (hasRefs)
virObjectUnlock(priv->agent); //agent lock will not be released here
In order to resolve, during EOF close the agent first, then set priv->agent
to NULL to fix the deadlock.
This essentially reverts commit id '1020a504'. It's also of note that commit
id '362d0477' notes a possible/rare deadlock similar to what was seen in
the monitor in commit id '25f582e3'. However, it seems interceding changes
including commit id 'd960d06f' should remove the deadlock issue.
With this change, if EOF is called:
Get VM lock
Check if !priv->agent || priv->beingDestroyed, then unlock VM
Call qemuAgentClose
Unlock VM
When qemuAgentClose is called
Get Agent lock
If Agent->fd open, close it
Unlock Agent
Unref Agent
qemuDomainObjEnterAgent
Enter with VM lock
Get Agent lock
Increase Agent refcnt
Unlock VM
After running agent command, calling qemuDomainObjExitAgent
Enter with Agent lock
Unref Agent
If not last reference, unlock Agent
Get VM lock
If we were in the middle of an EnterAgent, call Agent command, and
ExitAgent sequence and the EOF code is triggered, then the EOF code
can get the VM lock, make it's checks against !priv->agent ||
priv->beingDestroyed, and call qemuAgentClose. The CloseAgent
would wait to get agent lock. The other thread then will eventually
call ExitAgent, release the Agent lock and unref the Agent. Once
ExitAgent releases the Agent lock, AgentClose will get the Agent
Agent lock, close the fd, unlock the agent, and unref the agent.
The final unref would cause deletion of the agent.
Signed-off-by: Wang Yufei <james.wangyufei@huawei.com> Reviewed-by: Ren Guannan <renguannan@huawei.com>
build: Create needed folders without dependency tracking
The parameter --disable-dependency-tracking is supposed to speed up
one-time build due to the fact that it disables some dependency
extractors that, apparently, take longer time to execute. That is a
problem for code that is generated into builddir (especially some
specific subdirectory) because the directory it should be installed to
does not exists in VPATH and without the dependency tracking is not
created. Generating such file hence fails with -ENOENT. In order to
keep generating files into builddir instead of srcdir, we must create
the directory ourselves. This should finally fix the problem that is
being fixed multiple times since its introduction in commit a9fe62037214
and let us continue with cleaning those parts of Makefiles that depend
on generating files into the srcdir rather than builddir as it should
be.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Wei Jiangang [Mon, 30 Nov 2015 10:08:40 +0000 (18:08 +0800)]
tools: fix output of list with state-shutoff
Due to the default of flags is VIR_CONNECT_LIST_DOMAINS_ACTIVE,
It doesn't show the domains that have been shutdown when we use
'virsh list' with only --state-shutoff.
Michal Privoznik [Fri, 17 Jul 2015 09:11:23 +0000 (11:11 +0200)]
conf: Split virDomainObjList into a separate file
Our domain_conf.* files are big enough. Not only they contain XML
parsing code, but they served as a storage of all functions whose
name is virDomain prefixed. This is just wrong as it gathers not
related functions (and modules) into one big file which is then
harder to maintain. Split virDomainObjList module into a separate
file called virdomainobjlist.[ch].
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Ján Tomko [Fri, 13 Nov 2015 10:26:37 +0000 (11:26 +0100)]
qemu: add capabilities for virtio input devices
Add capabilities for virtio-keyboard, virtio-mouse
and virtio-tablet devices:
name "virtio-keyboard-device", bus virtio-bus
name "virtio-keyboard-pci", bus PCI
name "virtio-mouse-device", bus virtio-bus
name "virtio-mouse-pci", bus PCI
name "virtio-tablet-device", bus virtio-bus
name "virtio-tablet-pci", bus PCI
Map both -device and -pci versions of the device to one capability.
Pavel Hrdina [Sat, 28 Nov 2015 08:03:40 +0000 (09:03 +0100)]
virlogd: fix crash if log file exists and it's larger the maxlen
If for some reason there is an existing log file, that is larger then
max length of log file, we need to rollover that file immediately.
Trying to figure out how much data we could write will resolve in
overflow of unsigned variable 'towrite' and this leads to segfault.
Erik Skultety [Mon, 5 Oct 2015 15:17:51 +0000 (17:17 +0200)]
admin: Introduce virAdmConnectGetLibVersion
Introduce a new API to get libvirt version. It is worth noting, that
libvirt-admin and libvirt share the same version number. Unfortunately,
our existing API isn't generic enough to be used with virAdmConnectPtr
as well. Also this patch wires up this API to the virt-admin client
as a generic cmdVersion command.
Erik Skultety [Mon, 12 Oct 2015 15:10:57 +0000 (17:10 +0200)]
admin: Add support for connection close callbacks
As we need a client disconnect handler, we also need a mechanism to register
such handlers for a client. This patch introduced both the close callbacks and
also the client vshAdmCatchDisconnect handler to be registered with it. By
registering the handler we still need to make sure the client can react to
daemon's events like disconnect or keepalive, so asynchronous I/O event polling
is necessary to be enabled too.
Erik Skultety [Fri, 30 Oct 2015 11:11:52 +0000 (12:11 +0100)]
admin: Add support for URI aliases
Now that we introduced URI support in libvirt-admin, we should also support URI
aliases during connection establishment phase. After applying this patch,
virAdmConnectOpen will also support VIR_CONNECT_NO_ALIASES flag.
Erik Skultety [Fri, 6 Nov 2015 09:44:53 +0000 (10:44 +0100)]
livirt: Move URI alias matching to util
As we need to provide support for URI aliases in libvirt-admin as well, URI
alias matching needs to be internally visible. Since
virConnectOpenResolveURIAlias does have a compatible signature, it could be
easily reused by libvirt-admin. This patch moves URI alias matching to util,
renaming it accordingly.
Erik Skultety [Mon, 12 Oct 2015 15:08:29 +0000 (17:08 +0200)]
admin: Do not generate remoteAdminConnect{Open,Close}
As we plan to add more and more logic to remote connecting methods,
these cannot be generated from admin_protocol.x anymore. Instead,
this patch implements these to methods explicitly.
Erik Skultety [Thu, 15 Oct 2015 12:48:58 +0000 (14:48 +0200)]
admin: Move remote admin API version to a separate module
By moving the remote version into a separate module, we gain a slightly
better maintainability in the long run than just by leaving it in one
place with the existing libvirt-admin library which can start getting
pretty messy later on.
Erik Skultety [Wed, 14 Oct 2015 13:10:02 +0000 (15:10 +0200)]
admin: Introduce virAdmConnectIsAlive
Since most of our APIs rely on an acive functional connection to a daemon and
we have such a mechanism in libvirt already, there's need to have such a way in
libvirt-admin as well. By introducing a new public API, this patch provides
support to check for an active connection.
Erik Skultety [Mon, 12 Oct 2015 15:07:21 +0000 (17:07 +0200)]
virt-admin: Introduce first working skeleton
This patch introduces virt-admin client which is based on virsh client,
but had to reimplement several methods to meet virt-admin specific needs
or remove unnecessary virsh specific logic.
Erik Skultety [Thu, 26 Nov 2015 14:08:36 +0000 (15:08 +0100)]
admin: introduce virAdmGetVersion
Unfortunately, client side version retrieval API virGetVersion uses
one-time initialization (due to the fact we might not have initialized the
library by calling connect prior to this) which is not completely compatible
with admin initialization. This API is rather simplistic and reimplementing
it for admin might be the preferred method of reusing it. Note that even though
the method will be reimplemented, the version number is still the same for both
the libvirt and libvirt-admin library.
Erik Skultety [Mon, 12 Oct 2015 14:09:53 +0000 (16:09 +0200)]
libvirt: Move config getters to util
virConnectGetConfig and virConnectGetConfigPath were static libvirt
methods, merely because there hasn't been any need for having them
internally exported yet. Since libvirt-admin also needs to reference
its config file, 'xGetConfig' should be exported.
Besides moving, this patch also renames the methods accordingly,
as they are libvirt config specific.
Erik Skultety [Thu, 26 Nov 2015 14:02:49 +0000 (15:02 +0100)]
libvirt: introduce libvirt/libvirt-common.h.in
As it turned out, we need to share some enums and declarations between
libvirt.h and libvirt-admin.h, but since our policy forbids direct includes of
libvirt*.h, there has to be some header exempt from this rule. This patch moves
the relevant part of code from libvirt.h.in to libvirt-common.h.in. Moreover,
since there is no need to have libvirt.h generated anymore, introduce a new
header libvirt.h which was previosly ignored from git and make the common
header ignored and generated instead.
qemu 2.5 provides virtio video device. It can be used with -device
virtio-vga for primary devices, or -device virtio-gpu for non-vga
devices. However, only the primary device (VGA) is supported with this
patch.
systemd: Escape only needed characters for machined
Machine name escaping follows the same rules as serice name escape,
except that '.' and '-' must not be escaped in machine names, due
to a bug in systemd-machined.
The rule for virrotatingfiletest was defined in DBUS-only block even
though the test does not use DBus at all. Also DBUS_CFLAGS and
DBUS_LIBS are removed from the rules. The original error was:
/usr/lib/gcc/x86_64-pc-linux-gnu/5.2.0/../../../../lib64/Scrt1.o: In
function `_start':
(.text+0x20): undefined reference to `main'
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
logging: remove reference to non-existent augeas files
The libvirt_logd.aug and test_libvirt_logd.aug.in files
have never existed so shouldn't be in EXTRA_DIST. It was
a copy+paste mistake when closing virtlogd from virtlockd
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
logging: avoid variables called 'daemon' due to function clash
With some versions of GLibC / GCC, a variable called 'daemon'
will result in a warning about clashing with the function also
named 'daemon'. Rename it to 'dmn' to avoid the clash.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Guido Günther [Thu, 26 Nov 2015 17:00:09 +0000 (18:00 +0100)]
virtlogd: use %llu to print 64bit types
Otherwise we fail on 32bit with:
CC logging/virtlogd-log_daemon_dispatch.o
logging/log_daemon_dispatch.c: In function 'virLogManagerProtocolDispatchDomainReadLogFile':
logging/log_daemon_dispatch.c:120:9: error: format '%zu' expects argument of type 'size_t', but argument 7 has type 'uint64_t' [-Werror=format]
logging: inhibit virtlogd shutdown while log files are open
The virtlogd daemon is launched with a 30 second timeout for
unprivileged users. Unfortunately the timeout is only inhibited
while RPC clients are connected, and they only connect for a
short while to open the log file descriptor. We need to hold
an inhibition for as long as the log file descriptor itself
is open.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
qemu: add support for sending QEMU stdout/stderr to virtlogd
Currently the QEMU stdout/stderr streams are written directly to
a regular file (eg /var/log/libvirt/qemu/$GUEST.log). While those
can be rotated by logrotate (using copytruncate option) this is
not very efficient. It also leaves open a window of opportunity
for a compromised/broken QEMU to DOS the host filesystem by
writing lots of text to stdout/stderr.
This makes it possible to connect the stdout/stderr file handles
to a pipe that is provided by virtlogd. The virtlogd daemon will
read from this pipe and write data to the log file, performing
file rotation whenever a pre-determined size limit is reached.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
qemu: convert monitor to use qemuDomainLogContextPtr indirectly
Currently the QEMU monitor is given an FD to the logfile. This
won't work in the future with virtlogd, so it needs to use the
qemuDomainLogContextPtr instead, but it shouldn't directly
access that object either. So define a callback that the
monitor can use for reporting errors from the log file.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>