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Detected by gcc -O2, introduced in commit 532ce9c2. If dmidecode
outputs a field unrecognized by the parsers, then the code would
dereference an uninitialized eol variable.
* src/util/sysinfo.c (virSysinfoParseBIOS)
(virSysinfoParseSystem, virSysinfoParseProcessor)
(virSysinfoParseMemory): Avoid uninitialized variable.
The last patch was incomplete. The translated strings merely
moved between generated file names, rather than disappearing.
* cfg.mk (generated_files): Update generated file names.
* po/POTFILES.in: Add remote_dispatch.h
Detected by gcc -O2:
remote/remote_driver.c: In function 'doRemoteOpen':
remote/remote_driver.c:2753:26: error: 'sasl' may be used uninitialized in this function [-Werror=uninitialized]
* src/remote/remote_driver.c (remoteAuthSASL): Initialize sasl.
Add a page which documents how to configure lock managers,
focusing on use of sanlock with the QEMU/KVM driver
* docs/locking.html.in: Docs about lock managers
* docs/sitemap.html.in: Add lock manager config to
the deployment section
The current sanlock plugin requires a central management
application to manually add <lease> elements to each guest,
to protect resources that are assigned to it (eg writable
disks). This makes the sanlock plugin useless for usage
in more ad hoc deployment environments where there is no
central authority to associate disks with leases.
This patch adds a mode where the sanlock plugin will
automatically create leases for each assigned read-write
disk, using a md5 checksum of the fully qualified disk
path. This can work pretty well if guests are using
stable disk paths for block devices eg /dev/disk/by-path/XXXX
symlinks, or if all hosts have NFS volumes mounted in
a consistent pattern.
The plugin will create one lockspace for managing disks
with filename /var/lib/libvirt/sanlock/__LIBVIRT__DISKS__.
For each VM disks, there will be another file to hold
a lease /var/lib/libvirt/sanlock/5903e5d25e087e60a20fe4566fab41fd
Each VM disk lease is usually 1 MB in size. The script
virt-sanlock-cleanup should be run periodically to remove
unused lease files from the lockspace directory.
To make use of this capability the admin will need to do
several tasks:
- Mount an NFS volume (or other shared filesystem)
on /var/lib/libvirt/sanlock
- Configure 'host_id' in /etc/libvirt/qemu-sanlock.conf
with a unique value for each host with the same NFS
mount
- Toggle the 'auto_disk_leases' parameter in qemu-sanlock.conf
Technically the first step can be skipped, in which case
sanlock will only protect against 2 vms on the same host
using the same disk (or the same VM being started twice
due to error by libvirt).
* src/locking/libvirt_sanlock.aug,
src/locking/sanlock.conf,
src/locking/test_libvirt_sanlock.aug: Add config params
for configuring auto lease setup
* libvirt.spec.in: Add virt-sanlock-cleanup program, man
page
* tools/virt-sanlock-cleanup.in: Script to purge unused
disk resource lease files
Introduce a configuration file with a single parameter
'require_lease_for_disks', which is used to decide whether
it is allowed to start a guest which has read/write disks,
but without any leases.
* libvirt.spec.in: Add sanlock config file and augeas
lens
* src/Makefile.am: Install sanlock config file and
augeas lens
* src/locking/libvirt_sanlock.aug: Augeas master lens
* src/locking/test_libvirt_sanlock.aug: Augeas test file
* src/locking/sanlock.conf: Example sanlock config
* src/locking/lock_driver_sanlock.c: Wire up loading
of configuration file
Allow a 'configFile' parameter to be passed into the lock
drivers to provide configuration. Wire up the QEMU driver
to pass in file names '/etc/libvirt/qemu-$NAME.conf
eg qemu-sanlock.conf
* src/locking/lock_driver.h, src/locking/lock_driver_nop.c,
src/locking/lock_driver_sanlock.c, src/locking/lock_manager.c,
src/locking/lock_manager.h: Add configFile parameter
* src/qemu/qemu_conf.c: Pass in configuration file path to
lock driver plugins
If a domain name is defined for a network, add the --expand-hosts
option to the dnsmasq commandline. This results in the domain being
added to any hostname that is defined in a dns <host> element and
contains no '.' characters (i.e. it is an "unqualified"
hostname). Since PTR records are automatically created for any name
defined in <host>, the result of a PTR request will change from the
unqualified name to the qualified name.
This also has the same effect on any hostnames that dnsmasq reads
from the host's /etc/hosts file.
(In the case of guest hostnames that were learned by dnsmasq via DHCP
requests, they were already getting the domain name added on, even
without --expand-hosts).
The standard remote protocol for libvirtd no longer needs to
include definitions of the generic message header/error structs
or status codes. This is all defined in the generic RPC protocol
* src/remote/remote_protocol.x: Remove all RPC message definitions
* src/remote/remote_protocol.h, src/remote/remote_protocol.c:
Re-generate
* daemon/remote_generate_stubs.pl: Delete obsolete script
This guts the libvirtd daemon, removing all its networking and
RPC handling code. Instead it calls out to the new virServerPtr
APIs for all its RPC & networking work
As a fallout all libvirtd daemon error reporting now takes place
via the normal internal error reporting APIs. There is no need
to call separate error reporting APIs in RPC code, nor should
code use VIR_WARN/VIR_ERROR for reporting fatal problems anymore.
* daemon/qemu_dispatch_*.h, daemon/remote_dispatch_*.h: Remove
old generated dispatcher code
* daemon/qemu_dispatch.h, daemon/remote_dispatch.h: New dispatch
code
* daemon/dispatch.c, daemon/dispatch.h: Remove obsoleted code
* daemon/remote.c, daemon/remote.h: Rewrite for new dispatch
APIs
* daemon/libvirtd.c, daemon/libvirtd.h: Remove all networking
code
* daemon/stream.c, daemon/stream.h: Update for new APIs
* daemon/Makefile.am: Link to libvirt-net-rpc-server.la
This guts the current remote driver, removing all its networking
handling code. Instead it calls out to the new virClientPtr and
virClientProgramPtr APIs for all RPC & networking work.
* src/Makefile.am: Link remote driver with generic RPC code
* src/remote/remote_driver.c: Gut code, replacing with RPC
API calls
* src/rpc/gendispatch.pl: Update for changes in the way
streams are handled
The libvirt sanlock plugin is intentionally leaking a file
descriptor to QEMU. To enable QEMU to use this FD under
SELinux, it must be labelled correctly. We dont want to use
the svirt_image_t for this, since QEMU must not be allowed
to actually use the FD. So instead we label it with svirt_t
using virSecurityManagerSetProcessFDLabel
* src/locking/domain_lock.c, src/locking/domain_lock.h,
src/locking/lock_driver.h, src/locking/lock_driver_nop.c,
src/locking/lock_driver_sanlock.c, src/locking/lock_manager.c,
src/locking/lock_manager.h: Optionally pass an FD back to
the hypervisor for security driver labelling
* src/qemu/qemu_process.c: label the lock manager plugin
FD with the process label
Add a new security driver method for labelling an FD with
the process label, rather than the image label
* src/libvirt_private.syms, src/security/security_apparmor.c,
src/security/security_dac.c, src/security/security_driver.h,
src/security/security_manager.c, src/security/security_manager.h,
src/security/security_selinux.c, src/security/security_stack.c:
Add virSecurityManagerSetProcessFDLabel & impl
The virSecurityManagerSetFDLabel method is used to label
file descriptors associated with disk images. There will
shortly be a need to label other file descriptors in a
different way. So the current name is ambiguous. Rename
the method to virSecurityManagerSetImageFDLabel to clarify
its purpose
* src/libvirt_private.syms,
src/qemu/qemu_migration.c, src/qemu/qemu_process.c,
src/security/security_apparmor.c, src/security/security_dac.c,
src/security/security_driver.h, src/security/security_manager.c,
src/security/security_manager.h, src/security/security_selinux.c,
src/security/security_stack.c: s/FDLabel/ImageFDLabel/
This is in response to bugzilla 664629
https://bugzilla.redhat.com/show_bug.cgi?id=664629
The patch below returns an appropriate error message if the chain of
nwfilters is found to contain unresolvable variables and therefore
cannot be instantiated.
Example: The following XMl added to a domain:
<interface type='bridge'>
<mac address='52:54:00:9f:80:45'/>
<source bridge='virbr0'/>
<model type='virtio'/>
<filterref filter='test'/>
</interface>
that references the following filter
<filter name='test' chain='root'>
<filterref filter='clean-traffic'/>
<filterref filter='allow-dhcp-server'/>
</filter>
now displays upon 'virsh start mydomain'
error: Failed to start domain mydomain
error: internal error Cannot instantiate filter due to unresolvable variable: DHCPSERVER
'DHPCSERVER' is contained in allow-dhcp-server.
We already have a public virDomainPinVcpu, which implies that
Pin and Vcpu are treated as separate words. Unreleased commit
e261987c introduced virDomainGetVcpupinInfo as the first public
API that used Vcpupin, although we had prior internal uses of
that spelling. For consistency, change the spelling to be two
words everywhere, regardless of whether pin comes first or last.
* daemon/remote.c: Treat vcpu and pin as separate words.
* include/libvirt/libvirt.h.in: Likewise.
* src/conf/domain_conf.c: Likewise.
* src/conf/domain_conf.h: Likewise.
* src/driver.h: Likewise.
* src/libvirt.c: Likewise.
* src/libvirt_private.syms: Likewise.
* src/libvirt_public.syms: Likewise.
* src/libxl/libxl_driver.c: Likewise.
* src/qemu/qemu_driver.c: Likewise.
* src/remote/remote_driver.c: Likewise.
* src/xen/xend_internal.c: Likewise.
* tools/virsh.c: Likewise.
* src/remote/remote_protocol.x: Likewise.
* src/remote_protocol-structs: Likewise.
Suggested by Matthias Bolte.
Convert networkDnsmasqLeaseFileName to a replaceable function pointer
that allow the testsuite to use a version of that function that is not
depending on configure --localstatedir.
This fixes 5 of 6 test failures, when configure --localstatedir isn't
set to /var.
The build currently fails when trying to create virnetprotocol.c
into $(builddir)/rpc, which doesn't exist. But since the file
is part of the tarball, it should be generated into $(srcdir).
Caught by autobuild.sh.
* src/Makefile.am (VIR_NET_RPC_GENERATED): Generate into srcdir.
This patch teaches "virsh vcpupin" command to query if no list
is given. Its feature is to show CPU affinity information in more
reader-friendly way.
# virsh vcpupin VM --config
VCPU: CPU Affinity
----------------------------------
0: 1-6,9-20
1: 10
2: 5,9-11,15-20
3: 1,3,5,7,9,11,13,15
When cpulist is omitted, vcpu number is optional. When vcpu number is
provided, information of only specified vcpu is displayed.
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
The "virsh vcpuinfo" command results in failure when the target domain
is inactive on KVM. This patch improves this behavior by adding the
fallback to invoke virDomainGetVcpupinInfo API in case of
virDomainGetVcpus API returns error and the target domain is inactive.
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
This patch implements the code to address the new API (virDomainGetVcpupinInfo)
in the qemu driver.
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
This patch introduces a new libvirt API (virDomainGetVcpupinInfo),
as a counterpart to virDomainPinVcpuFlags.
We can use virDomainGetVcpus API to retrieve CPU affinity information,
but can't use this API against inactive domains (at least in case of KVM),
as it lacks a flags parameter.
The usual thing is to add a new virDomainGetVcpusFlags, but that API name
is already occupied by the counterpart to virDomainGetMaxVcpus, which
has a completely different signature.
The virDomainGetVcpupinInfo is the new API to retrieve CPU affinity
information of active and inactive domains. While the usual convention
is to list an array before its length, this API violates that rule
in order to be more like virDomainGetVcpus (where maxinfo was doing
double-duty as the length of two different arrays).
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
The sub-elements of <ip> had been placed at the same level of
indentation as ip itself, implying that they were really elements of
<network>. Within that, sub-elements of ip/dhcp were also at that same
level. These have been double-indented.
At the same time, I realized that the documentation for the new <dns>
element had been placed right in the middle of the description of the
sub-elements of <ip>. I moved it up out of the way.
It's unlikely that we'll ever want to escape a string as long as
INT_MAX/6, but adding this check can't hurt.
* src/util/buf.c (virBufferEscapeSexpr, virBufferEscapeString):
Check for (unlikely) overflow.
Integer overflow and remote code are never a nice mix.
This has existed since commit 56cd414.
* src/libvirt.c (virDomainGetVcpus): Reject overflow up front.
* src/remote/remote_driver.c (remoteDomainGetVcpus): Avoid overflow
on sending rpc.
* daemon/remote.c (remoteDispatchDomainGetVcpus): Avoid overflow on
receiving rpc.
Done as a separate commit to make backporting the next patch easier.
We are already using "intprops.h", but this makes it explicit.
* .gnulib: Update, for syntax-check fix.
* bootstrap.conf (gnulib_modules): Make intprops use explicit.
* src/locking/domain_lock.c (includes): Drop unused header.
* src/nwfilter/nwfilter_learnipaddr.c (includes): Use "", not <>,
for gnulib.
This commit introduces names definition for the DNS hosts file using
the following syntax:
<dns>
<host ip="192.168.1.1">
<name>alias1</name>
<name>alias2</name>
</host>
</dns>
Some of the improvements and fixes were done by Laine Stump so
I'm putting him into the SOB clause again ;-)
Signed-off-by: Michal Novotny <minovotn@redhat.com>
Signed-off-by: Laine Stump <laine@laine.org>
The regression testing done by comparison of command-line
generated from the network XML file and the expected
command-line arguments (read from file).
Signed-off-by: Michal Novotny <minovotn@redhat.com>
The dnsmasq commandline was being built as a part of running
dnsmasq. This patch puts the commandline build into a separate
function (and exports it as a private API) making it possible to build
a dnsmasq commandline without executing it, so that we can write a
test program to verify that the proper commandlines are being created.
Signed-off-by: Michal Novotny <minovotn@redhat.com>
This commit introduces the <dns> element and <txt> record for the
virtual DNS network. The DNS TXT record can be defined using following
syntax in the network XML file:
<dns>
<txt name="example" value="example value" />
</dns>
Also, the Relax-NG scheme has been altered to allow the texts without
spaces only for the name element and some nitpicks about memory
free'ing have been fixed by Laine so therefore I'm adding Laine to the
SOB clause ;-)
Signed-off-by: Michal Novotny <minovotn@redhat.com>
Signed-off-by: Laine Stump <laine@laine.org>
Commit cd48c3f4e9 added a Py_ssize_t typedef for Python < 2.7.
But Py_ssize_t was added in Python 2.5. This makes the build fail
for Python 2.6.
Adjust the check to match Python < 2.5 to fix this.
