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  1. 26 5月, 2012 2 次提交
    • J
      maint: avoid new automake warning about AM_PROG_CC_STDC · 0d07aa51
      由 Jim Meyering 提交于 
      * configure.ac (AM_PROG_CC_STDC): Stop using this macro.
It provokes warnings from newer automake and is superseded by
autoconf's AC_PROG_CC, which we're already using.
      0d07aa51
    • E
      build: silence libtool warning on probes.o · 0159295d
      由 Eric Blake 提交于 
      Libtool supports linking directly against .o files on some platforms
(such as Linux), which happens to be the only place where we are
actually doing that (for the dtrace-generated probes.o files).  However,
it raises a big stink about the non-portability, even though we don't
attempt it on platforms where it would actually fail:

  CCLD   libvirt_driver_qemu.la

*** Warning: Linking the shared library libvirt_driver_qemu.la against
the non-libtool
*** objects  libvirt_qemu_probes.o is not portable!

This shuts libtool up by creating a proper .lo file that matches
what libtool normally expects.

* src/Makefile.am (%_probes.lo): New rule.
(libvirt_probes.stp, libvirt_qemu_probes.stp): Simplify into...
(%_probes.stp): ...shorter rule.
(CLEANFILES): Clean new .lo files.
(libvirt_la_BUILT_LIBADD, libvirt_driver_qemu_la_LIBADD)
(libvirt_lxc_LDADD, virt_aa_helper_LDADD): Link against .lo file.
* tests/Makefile.am (PROBES_O, qemu_LDADDS): Likewise.
      0159295d
  3. 25 5月, 2012 5 次提交
  5. 24 5月, 2012 20 次提交
  7. 23 5月, 2012 3 次提交
  9. 22 5月, 2012 5 次提交
    • L
      util: export virBufferTrim · 3404729e
      由 Laine Stump 提交于 
      This was forgotten in commit cdb87b1c.
      3404729e
    • E
      virBuffer: add way to trim back extra text · cdb87b1c
      由 Eric Blake 提交于 
      I'm tired of writing:

bool sep = false;
while (...) {
    if (sep)
       virBufferAddChar(buf, ',');
    sep = true;
    virBufferAdd(buf, str);
}

This makes it easier, allowing one to write:

while (...)
    virBufferAsprintf(buf, "%s,", str);
virBufferTrim(buf, ",", -1);

to trim any remaining comma.

* src/util/buf.h (virBufferTrim): Declare.
* src/util/buf.c (virBufferTrim): New function.
* tests/virbuftest.c (testBufTrim): Test it.
      cdb87b1c
    • W
      storage backend: Add RBD (RADOS Block Device) support · 74951ead
      由 Wido den Hollander 提交于 
      This patch adds support for a new storage backend with RBD support.

RBD is the RADOS Block Device and is part of the Ceph distributed storage
system.

It comes in two flavours: Qemu-RBD and Kernel RBD, this storage backend only
supports Qemu-RBD, thus limiting the use of this storage driver to Qemu only.

To function this backend relies on librbd and librados being present on the
local system.

The backend also supports Cephx authentication for safe authentication with
the Ceph cluster.

For storing credentials it uses the built-in secret mechanism of libvirt.
Signed-off-by: NWido den Hollander <wido@widodh.nl>
      74951ead
    • E
      build: fix unused variable after last patch · b8e6021e
      由 Eric Blake 提交于 
      The previous commit (2cb0899e) left a dead variable behind.

* src/libxl/libxl_driver.c (libxlClose): Drop dead variable.
      b8e6021e
    • D
      Fix potential events deadlock when unref'ing virConnectPtr · 2cb0899e
      由 Daniel P. Berrange 提交于 
      When the last reference to a virConnectPtr is released by
libvirtd, it was possible for a deadlock to occur in the
virDomainEventState functions. The virDomainEventStatePtr
holds a reference on virConnectPtr for each registered
callback. When removing a callback, the virUnrefConnect
function is run. If this causes the last reference on the
virConnectPtr to be released, then virReleaseConnect can
be run, which in turns calls qemudClose. This function has
a call to virDomainEventStateDeregisterConn which is intended
to remove all callbacks associated with the virConnectPtr
instance. This will try to grab a lock on virDomainEventState
but this lock is already held. Deadlock ensues

Thread 1 (Thread 0x7fcbb526a840 (LWP 23185)):

Since each callback associated with a virConnectPtr holds a
reference on virConnectPtr, it is impossible for the qemudClose
method to be invoked while any callbacks are still registered.
Thus the call to virDomainEventStateDeregisterConn must in fact
be a no-op. Thus it is possible to just remove all trace of
virDomainEventStateDeregisterConn and avoid the deadlock.

* src/conf/domain_event.c, src/conf/domain_event.h,
  src/libvirt_private.syms: Delete virDomainEventStateDeregisterConn
* src/libxl/libxl_driver.c, src/lxc/lxc_driver.c,
  src/qemu/qemu_driver.c, src/uml/uml_driver.c: Remove
  calls to virDomainEventStateDeregisterConn
      2cb0899e
  11. 21 5月, 2012 2 次提交
    • J
      Fix build when configuring with polkit0 · 651d7124
      由 Jim Fehlig 提交于 
      Commit 2223ea98 removed the only use of 'server' param in
remoteDispatchAuthPolkit().  Mark the parameter with ATTRIBUTE_UNUSED
to fix the build when configuring with polkit0.
      651d7124
    • S
      nwfilter: Add support for ipset · a3f3ab4c
      由 Stefan Berger 提交于 
      This patch adds support for the recent ipset iptables extension
to libvirt's nwfilter subsystem. Ipset allows to maintain 'sets'
of IP addresses, ports and other packet parameters and allows for
faster lookup (in the order of O(1) vs. O(n)) and rule evaluation
to achieve higher throughput than what can be achieved with
individual iptables rules.

On the command line iptables supports ipset using

iptables ... -m set --match-set <ipset name> <flags> -j ...

where 'ipset name' is the name of a previously created ipset and
flags is a comma-separated list of up to 6 flags. Flags use 'src' and 'dst'
for selecting IP addresses, ports etc. from the source or
destination part of a packet. So a concrete example may look like this:

iptables -A INPUT -m set --match-set test src,src -j ACCEPT

Since ipset management is quite complex, the idea was to leave ipset 
management outside of libvirt but still allow users to reference an ipset.
The user would have to make sure the ipset is available once the VM is
started so that the iptables rule(s) referencing the ipset can be created.

Using XML to describe an ipset in an nwfilter rule would then look as
follows:

  <rule action='accept' direction='in'>
    <all ipset='test' ipsetflags='src,src'/>
  </rule>

The two parameters on the command line are also the two distinct XML attributes
'ipset' and 'ipsetflags'.

FYI: Here is the man page for ipset:

https://ipset.netfilter.org/ipset.man.html

Regards,
    Stefan
      a3f3ab4c
  13. 18 5月, 2012 3 次提交
    • E
      build: fix virnetlink on glibc 2.11 · e8314e78
      由 Eric Blake 提交于 
      We were being lazy - virnetlink.c was getting uint32_t as a
side-effect from glibc 2.14's <unistd.h>, but older glibc 2.11
does not provide uint32_t from <unistd.h>.  In fact, POSIX states
that <unistd.h> need only provide intptr_t, not all of <stdint.h>,
so the bug really is ours.  Reported by Jonathan Alescio.

* src/util/virnetlink.h: Include <stdint.h>.
      e8314e78
    • H
      Adds support to param 'vcpu_time' in qemu_driver. · fe0aac05
      由 Hu Tao 提交于 
      This involves setting the cpuacct cgroup to a per-vcpu granularity,
as well as summing the each vcpu accounting into a common array.
Now that we are reading more than one cgroup file, we double-check
that cpus weren't hot-plugged between reads to invalidate our
summing.
Signed-off-by: NEric Blake <eblake@redhat.com>
      fe0aac05
    • H
      Add a new param 'vcpu_time' to virDomainGetCPUStats · d29a7aaa
      由 Hu Tao 提交于 
      Currently virDomainGetCPUStats gets total cpu usage, which consists
of:

  1. vcpu usage: the physical cpu time consumed by virtual cpu(s) of
     domain
  2. hypervisor: `total cpu usage' - `vcpu usage'

The param 'vcpu_time' is for getting vcpu usages.
      d29a7aaa