Commit Graph

490 Commits

Author SHA1 Message Date
William Jon McCann
32a9aac2e0 Use XDG Base Directories instead of storing in home directory
As defined in:
http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html

This offers a number of advantages:
 * Allows sharing a home directory between different machines, or
sessions (eg. using NFS)
 * Cleanly separates cache, runtime (eg. sockets), or app data from
user settings
 * Supports performing smart or selective migration of settings
between different OS versions
 * Supports reseting settings without breaking things
 * Makes it possible to clear cache data to make room when the disk
is filling up
 * Allows us to write a robust and efficient backup solution
 * Allows an admin flexibility to change where data and settings are stored
 * Dramatically reduces the complexity and incoherence of the
system for administrators
2012-05-14 15:15:58 +01:00
Osier Yang
97010eb1f1 numad: Set memory policy from numad advisory nodeset
Though numad will manage the memory allocation of task dynamically,
it wants management application (libvirt) to pre-set the memory
policy according to the advisory nodeset returned from querying numad,
(just like pre-bind CPU nodeset for domain process), and thus the
performance could benefit much more from it.

This patch introduces new XML tag 'placement', value 'auto' indicates
whether to set the memory policy with the advisory nodeset from numad,
and its value defaults to the value of <vcpu> placement, or 'static'
if 'nodeset' is specified. Example of the new XML tag's usage:

  <numatune>
    <memory placement='auto' mode='interleave'/>
  </numatune>

Just like what current "numatune" does, the 'auto' numa memory policy
setting uses libnuma's API too.

If <vcpu> "placement" is "auto", and <numatune> is not specified
explicitly, a default <numatume> will be added with "placement"
set as "auto", and "mode" set as "strict".

The following XML can now fully drive numad:

1) <vcpu> placement is 'auto', no <numatune> is specified.

   <vcpu placement='auto'>10</vcpu>

2) <vcpu> placement is 'auto', no 'placement' is specified for
   <numatune>.

   <vcpu placement='auto'>10</vcpu>
   <numatune>
     <memory mode='interleave'/>
   </numatune>

And it's also able to control the CPU placement and memory policy
independently. e.g.

1) <vcpu> placement is 'auto', and <numatune> placement is 'static'

   <vcpu placement='auto'>10</vcpu>
   <numatune>
     <memory mode='strict' nodeset='0-10,^7'/>
   </numatune>

2) <vcpu> placement is 'static', and <numatune> placement is 'auto'

   <vcpu placement='static' cpuset='0-24,^12'>10</vcpu>
   <numatune>
     <memory mode='interleave' placement='auto'/>
   </numatume>

A follow up patch will change the XML formatting codes to always output
'placement' for <vcpu>, even it's 'static'.
2012-05-08 16:57:32 -06:00
Laine Stump
c99e93758d util: function to get local nl_pid used by netlink event socket
This value will be needed to set the src_pid when sending netlink
messages to lldpad. It is part of the solution to:

  https://bugzilla.redhat.com/show_bug.cgi?id=816465

Note that libnl's port generation algorithm guarantees that the
nl_socket_get_local_port() will always be > 0 (since it is "getpid() +
(n << 22>" where n is always < 1024), so it is okay to cast the
uint32_t to int (thus allowing us to use -1 as an error sentinel).
2012-05-07 14:25:55 -04:00
Laine Stump
642973135c util: fix libvirtd startup failure due to netlink error
This is part of the solution to the problem detailed in:

  https://bugzilla.redhat.com/show_bug.cgi?id=816465

and further detailed in

  https://www.redhat.com/archives/libvir-list/2012-May/msg00202.htm

A short explanation is included in the comments of the patch itself.

Note that this patch by itself breaks communication between lldpad and
libvirtd, so the other 3 patches in the series must be applied at the
same time as this patch.
2012-05-07 14:25:43 -04:00
Guannan Ren
9914477efc usb: create functions to search usb device accurately
usbFindDevice():get usb device according to
                idVendor, idProduct, bus, device
                it is the exact match of the four parameters

usbFindDeviceByBus():get usb device according to bus, device
                  it returns only one usb device same as usbFindDevice

usbFindDeviceByVendor():get usb device according to idVendor,idProduct
                     it probably returns multiple usb devices.

usbDeviceSearch(): a helper function to do the actual search
2012-05-07 23:36:22 +08:00
Dmitry Guryanov
287737f413 util: add functions for interating over json object
Add function virJSONValueObjectKeysNumber, virJSONValueObjectGetKey
and virJSONValueObjectGetValue, which allow you to iterate over all
fields of json object: you can get number of fields and then get
name and value, stored in field with that name by index.

Signed-off-by: Dmitry Guryanov <dguryanov@parallels.com>
2012-05-03 09:07:25 -06:00
Jiri Denemark
9d2ac5453e qemu: Make sure qemu can access its directory in hugetlbfs
When libvirtd is started, we create "libvirt/qemu" directories under
hugetlbfs mount point. Only the "qemu" subdirectory is chowned to qemu
user and "libvirt" remains owned by root. If umask was too restrictive
when libvirtd started, qemu user may lose access to "qemu"
subdirectory. Let's explicitly grant search permissions to "libvirt"
directory for all users.
2012-04-30 08:17:40 +02:00
Stefan Berger
1614970ec5 Add new functions to virSocketAddr
Add 2 new functions to the virSocketAddr 'class':

- virSocketAddrEqual: tests whether two IP addresses and their ports are equal
- virSocketaddSetIPv4Addr: set a virSocketAddr given a 32 bit int
2012-04-25 09:53:29 -04:00
Daniel P. Berrange
2223ea984c The policy kit and HAL node device drivers both require a
DBus connection. The HAL device code further requires that
the DBus connection is integrated with the event loop and
provides such glue logic itself.

The forthcoming FirewallD integration also requires a
dbus connection with event loop integration. Thus we need
to pull the current event loop glue out of the HAL driver.

Thus we create src/util/virdbus.{c,h} files. This contains
just one method virDBusGetSystemBus() which obtains a handle
to the single shared system bus instance, with event glue
automagically setup.
2012-04-19 17:03:10 +01:00
Stefan Berger
6241eed3db Implement virHashRemoveAll function
Implement function to remove all entries of a hash table.
2012-04-19 10:21:43 -04:00
D. Herrendoerfer
997366ca7d qemu,util: fix netlink callback registration for migration
This patch adds a netlink callback when migrating a VEPA enabled
virtual machine.  It fixes a Bug where a VM would not request a port
association when it was cleared by lldpad.

This patch requires the latest git version of lldpad to work.

Signed-off-by: D. Herrendoerfer <d.herrendoerfer@herrendoerfer.name>
2012-04-12 14:32:10 -04:00
Philipp Hahn
b8bf79aad7 Support clock=variable relative to localtime
Since Xen 3.1 the clock=variable semantic is supported. In addition to
qemu/kvm Xen also knows about a variant where the offset is relative to
'localtime' instead of 'utc'.

Extends the libvirt structure with a flag 'basis' to specify, if the
offset is relative to 'localtime' or 'utc'.

Extends the libvirt structure with a flag 'reset' to force the reset
behaviour of 'localtime' and 'utc'; this is needed for backward
compatibility with previous versions of libvirt, since they report
incorrect XML.

Adapt the only user 'qemu' to the new name.
Extend the RelaxNG schema accordingly.
Document the new 'basis' attribute in the HTML documentation.
Adapt test for the new attribute.

Signed-off-by: Philipp Hahn <hahn@univention.de>
2012-04-02 09:08:31 -06:00
Zhou Peng
a1e50e820b private.syms: Add virNetDevMacVLanRestartWithVPortProfile
virNetDevMacVLanRestartWithVPortProfile is omitted in src/libvirt_private.syms,
which causes link err.
2012-03-29 17:03:37 +02:00
Osier Yang
487c063381 Add support for the suspend event
This patch introduces a new event type for the QMP event
SUSPEND:

    VIR_DOMAIN_EVENT_ID_PMSUSPEND

The event doesn't take any data, but considering there might
be reason for wakeup in future, the callback definition is:

typedef void
(*virConnectDomainEventSuspendCallback)(virConnectPtr conn,
                                        virDomainPtr dom,
                                        int reason,
                                        void *opaque);

"reason" is unused currently, always passes "0".
2012-03-23 23:12:18 +08:00
Osier Yang
57ddcc235a Add support for the wakeup event
This patch introduces a new event type for the QMP event
WAKEUP:

    VIR_DOMAIN_EVENT_ID_PMWAKEUP

The event doesn't take any data, but considering there might
be reason for wakeup in future, the callback definition is:

typedef void
(*virConnectDomainEventWakeupCallback)(virConnectPtr conn,
                                       virDomainPtr dom,
                                       int reason,
                                       void *opaque);

"reason" is unused currently, always passes "0".
2012-03-23 23:12:14 +08:00
Osier Yang
a26a1969c3 Add support for event tray moved of removable disks
This patch introduces a new event type for the QMP event
DEVICE_TRAY_MOVED, which occurs when the tray of a removable
disk is moved (i.e opened or closed):

    VIR_DOMAIN_EVENT_ID_TRAY_CHANGE

The event's data includes the device alias and the reason
for tray status' changing, which indicates why the tray
status was changed. Thus the callback definition for the event
is:

enum {
    VIR_DOMAIN_EVENT_TRAY_CHANGE_OPEN = 0,
    VIR_DOMAIN_EVENT_TRAY_CHANGE_CLOSE,

\#ifdef VIR_ENUM_SENTINELS
    VIR_DOMAIN_EVENT_TRAY_CHANGE_LAST
\#endif
} virDomainEventTrayChangeReason;

typedef void
(*virConnectDomainEventTrayChangeCallback)(virConnectPtr conn,
                                           virDomainPtr dom,
                                           const char *devAlias,
                                           int reason,
                                           void *opaque);
2012-03-23 23:10:26 +08:00
Daniel P. Berrange
a4fb88b5c9 Add helper API for finding auth file path
* src/util/virauth.c, src/util/virauth.h: Add virAuthGetConfigFilePath
* include/libvirt/virterror.h, src/util/virterror.c: Add
  VIR_FROM_AUTH error domain

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2012-03-23 13:24:07 +00:00
Daniel P. Berrange
4262e34eb5 Rename virRequest{Username,Password} to virAuthGet{Username,Password}
Ensure that the functions in virauth.h have names matching the file
prefix, by renaming  virRequest{Username,Password} to
virAuthGet{Username,Password}

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2012-03-23 13:24:06 +00:00
Daniel P. Berrange
f6632f6b7f Add a virKeyfilePtr object for parsing '.ini' files
The '.ini' file format is a useful alternative to the existing
config file style, when you need to have config files which
are hashes of hashes. The 'virKeyFilePtr' object provides a
way to parse these file types.

* src/Makefile.am, src/util/virkeyfile.c,
  src/util/virkeyfile.h: Add .ini file parser
* tests/Makefile.am, tests/virkeyfiletest.c: Test
  basic parsing capabilities

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2012-03-23 13:24:06 +00:00
Daniel P. Berrange
bc1ff1600e Convert drivers over to use virURIPtr for query params
Convert drivers currently using the qparams APIs, to instead
use the virURIPtr query parameters directly.

* src/esx/esx_util.c, src/hyperv/hyperv_util.c,
  src/remote/remote_driver.c, src/xenapi/xenapi_utils.c: Remove
  use of qparams
* src/util/qparams.h, src/util/qparams.c: Delete
* src/Makefile.am, src/libvirt_private.syms: Remove qparams

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2012-03-23 13:24:06 +00:00
Daniel P. Berrange
4ae4ae4ba4 Store parsed query parameters directly in the virURIPtr struct
Avoid the need for each driver to parse query parameters itself
by storing them directly in the virURIPtr struct. The parsing
code is a copy of that from src/util/qparams.c  The latter will
be removed in a later patch

* src/util/viruri.h: Add query params to virURIPtr
* src/util/viruri.c: Parse query parameters when creating virURIPtr
* tests/viruritest.c: Expand test to cover params

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2012-03-23 13:23:12 +00:00
Daniel P. Berrange
c33dae3175 Use virURIFree instead of xmlFreeURI
Since we defined a custom virURIPtr type, we should use a
virURIFree method instead of assuming it will always be
a typedef for xmlURIPtr

* src/util/viruri.c, src/util/viruri.h, src/libvirt_private.syms:
  Add a virURIFree method
* src/datatypes.c, src/esx/esx_driver.c, src/libvirt.c,
  src/qemu/qemu_migration.c, src/vmx/vmx.c, src/xen/xend_internal.c,
  tests/viruritest.c: s/xmlFreeURI/virURIFree/

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2012-03-23 12:59:20 +00:00
Laine Stump
0007237301 conf: forbid use of multicast mac addresses
A few times libvirt users manually setting mac addresses have
complained of a networking failure that ends up being due to a multicast
mac address being used for a guest interface. This patch prevents that
by logging an error and failing if a multicast mac address is
encountered in each of the three following cases:

1) domain xml <interface> mac address.
2) network xml bridge mac address.
3) network xml dhcp/host mac address.

There are several other places where a mac address can be input that
aren't controlled in this manner because failure to do so has no
consequences (e.g., if the address will be used to search through
existing interfaces for a match).

The RNG has been updated to add multiMacAddr and uniMacAddr along with
the existing macAddr, and macAddr was switched to uniMacAddr where
appropriate.
2012-03-19 20:33:30 -04:00
Osier Yang
d86120fc52 numad: Fix typo and warning
src/libvirt_private.syms:
  s/virDomainCpuPlacement/virDomainCpuPlacementMode/
src/qemu/qemu_process.c
  def->mem.cur_balloon expects "llu"
--
pushed under build-breaker rule
2012-03-15 19:43:42 +08:00
Osier Yang
0f8e7ae33a qemu: Support numad
numad is an user-level daemon that monitors NUMA topology and
processes resource consumption to facilitate good NUMA resource
alignment of applications/virtual machines to improve performance
and minimize cost of remote memory latencies. It provides a
pre-placement advisory interface, so significant processes can
be pre-bound to nodes with sufficient available resources.

More details: http://fedoraproject.org/wiki/Features/numad

"numad -w ncpus:memory_amount" is the advisory interface numad
provides currently.

This patch add the support by introducing a new XML attribute
for <vcpu>. e.g.

  <vcpu placement="auto">4</vcpu>
  <vcpu placement="static" cpuset="1-10^6">4</vcpu>

The returned advisory nodeset from numad will be printed
in domain's dumped XML. e.g.
  <vcpu placement="auto" cpuset="1-10^6">4</vcpu>

If placement is "auto", the number of vcpus and the current
memory amount specified in domain XML will be used for numad
command line (numad uses MB for memory amount):
  numad -w $num_of_vcpus:$current_memory_amount / 1024

The advisory nodeset returned from numad will be used to set
domain process CPU affinity then. (e.g. qemuProcessInitCpuAffinity).

If the user specifies both CPU affinity policy (e.g.
(<vcpu cpuset="1-10,^7,^8">4</vcpu>) and placement == "auto"
the specified CPU affinity will be overridden.

Only QEMU/KVM drivers support it now.

See docs update in patch for more details.
2012-03-15 12:24:56 +08:00
Eric Blake
0d0b409863 cpustats: collect VM user and sys times
As documented in linux.git/Documentation/cgroups/cpuacct.txt,
cpuacct.stat returns user and system time in ticks (the same
unit used in times(2)).  It would be a bit nicer if it were like
getrusage(2) and reported timeval contents, or like cpuacct.usage
and in nanoseconds, but we can't be picky.

* src/util/cgroup.h (virCgroupGetCpuacctStat): New function.
* src/util/cgroup.c (virCgroupGetCpuacctStat): Implement it.
(virCgroupGetValueStr): Allow for multi-line files.
* src/libvirt_private.syms (cgroup.h): Export it.
2012-03-12 08:46:56 -06:00
Peng Zhou
896e6ac4f8 qemu: spice agent-mouse support
spice agent-mouse support

Usage:
  <graphics type='spice'>
    <mouse mode='client'|'server'/>
  <graphics/>

Signed-off-by: Osier Yang <jyang@redhat.com>
2012-03-09 15:26:24 +08:00
Laine Stump
8845d29375 util: make virDomainLeaseDefFree global
It will be used in a different file in an upcoming patch.
2012-03-08 16:58:16 -05:00
Michal Privoznik
1e0534a770 qemu: Don't parse device twice in attach/detach
Some members are generated during XML parse (e.g. MAC address of
an interface); However, with current implementation, if we
are plugging a device both to persistent and live config,
we parse given XML twice: first time for live, second for config.
This is wrong then as the second time we are not guaranteed
to generate same values as we did for the first time.
To prevent that we need to create a copy of DeviceDefPtr;
This is done through format/parse process instead of writing
functions for deep copy as it is easier to maintain:
adding new field to any virDomain*DefPtr doesn't require change
of copying function.
2012-03-08 10:20:21 +01:00
Eric Blake
0d90823e87 util: new function for scaling numbers
Scaling an integer based on a suffix is something we plan on reusing
in several contexts: XML parsing, virsh CLI parsing, and possibly
elsewhere.  Make it easy to reuse, as well as adding in support for
powers of 1000.

* src/util/util.h (virScaleInteger): New function.
* src/util/util.c (virScaleInteger): Implement it.
* src/libvirt_private.syms (util.h): Export it.
2012-03-07 18:24:43 -07:00
KAMEZAWA Hiroyuki
44b0a53a7c qemu driver for virDomainGetCPUstats using cpuacct cgroup.
* For now, only "cpu_time" is supported.
* cpuacct cgroup is used for providing percpu cputime information.

* src/qemu/qemu.conf     - take care of cpuacct cgroup.
* src/qemu/qemu_conf.c   - take care of cpuacct cgroup.
* src/qemu/qemu_driver.c - added an interface
* src/util/cgroup.c/h    - added interface for getting percpu cputime

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
2012-03-06 21:54:48 -07:00
KAMEZAWA Hiroyuki
ad18ff9dbf add nodeGetCPUmap() for getting available CPU IDs in a cpumap.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
2012-03-06 21:54:48 -07:00
Roopa Prabhu
ce43483caf qemu: install port profile and mac address on netdev hostdevs
These changes are applied only if the hostdev has a parent net device
(i.e. if it was defined as "<interface type='hostdev'>" rather than
just "<hostdev>").  If the parent netdevice has virtual port
information, the original virtualport associate functions are called
(these set and restore both mac and port profile on an
interface). Otherwise, only mac address is set on the device.

Note that This is only supported for SR-IOV Virtual Functions (not for
standard PCI or USB netdevs), and virtualport association is only
supported for 802.1Qbh. For all other types of cards and types of
virtualport, a "Config Unsupported" error is returned and the
operation fails.

Signed-off-by: Roopa Prabhu <roprabhu@cisco.com>
2012-03-06 06:04:04 -05:00
Roopa Prabhu
5095bf06f1 util: support functions for mac/portprofile associations on hostdev
This patch adds the following:

- functions to set and get vf configs
- Functions to replace and store vf configs (Only mac address is handled today.
  But the functions can be easily extended for vlans and other vf configs)
- function to dump link dev info (This is moved from virnetdevvportprofile.c)

Signed-off-by: Roopa Prabhu <roprabhu@cisco.com>
2012-03-06 06:03:51 -05:00
Roopa Prabhu
b8b702734c util: two new pci util functions
pciDeviceGetVirtualFunctionInfo returns pf netdevice name and virtual
function index for a given vf. This is just a wrapper around existing functions
to return vf's pf and vf_index with one api call

pciConfigAddressToSysfsfile returns the sysfile pci device link
from a 'struct pci_config_address'

Signed-off-by: Roopa Prabhu <roprabhu@cisco.com>
2012-03-06 06:03:46 -05:00
Laine Stump
ac9ca01cc4 conf: change virDomainNetRemove from static to global
This exact code is duplicated in qemuDomainDetachNetDevice().
2012-03-05 23:24:38 -05:00
Laine Stump
3b1c191fe7 conf: parse/format type='hostdev' network interfaces
This is the new interface type that sets up an SR-IOV PCI network
device to be assigned to the guest with PCI passthrough after
initializing some network device-specific things from the config
(e.g. MAC address, virtualport profile parameters). Here is an example
of the syntax:

  <interface type='hostdev' managed='yes'>
    <source>
      <address type='pci' domain='0' bus='0' slot='4' function='3'/>
    </source>
    <mac address='00:11:22:33:44:55'/>
    <address type='pci' domain='0' bus='0' slot='7' function='0'/>
  </interface>

This would assign the PCI card from bus 0 slot 4 function 3 on the
host, to bus 0 slot 7 function 0 on the guest, but would first set the
MAC address of the card to 00:11:22:33:44:55.

NB: The parser and formatter don't care if the PCI card being
specified is a standard single function network adapter, or a virtual
function (VF) of an SR-IOV capable network adapter, but the upcoming
code that implements the back end of this config will work *only* with
SR-IOV VFs. This is because modifying the mac address of a standard
network adapter prior to assigning it to a guest is pointless - part
of the device reset that occurs during that process will reset the MAC
address to the value programmed into the card's firmware.

Although it's not supported by any of libvirt's hypervisor drivers,
usb network hostdevs are also supported in the parser and formatter
for completeness and consistency. <source> syntax is identical to that
for plain <hostdev> devices, except that the <address> element should
have "type='usb'" added if bus/device are specified:

  <interface type='hostdev'>
    <source>
      <address type='usb' bus='0' device='4'/>
    </source>
    <mac address='00:11:22:33:44:55'/>
  </interface>

If the vendor/product form of usb specification is used, type='usb'
is implied:

  <interface type='hostdev'>
    <source>
      <vendor id='0x0012'/>
      <product id='0x24dd'/>
    </source>
    <mac address='00:11:22:33:44:55'/>
  </interface>

Again, the upcoming patch to fill in the backend of this functionality
will log an error and fail with "Unsupported Config" if you actually
try to assign a USB network adapter to a guest using <interface
type='hostdev'> - just use a standard <hostdev> entry in that case
(and also for single-port PCI adapters).
2012-03-05 23:24:28 -05:00
Laine Stump
cc5b1fe59a conf: hostdev utility functions
Three new functions useful in other files:

virDomainHostdevInsert:

Add a new hostdev at the end of the array. This would more sensibly be
called virDomainHostdevAppend, but the existing functions for other
types of devices are called Insert.

virDomainHostdevRemove:

Eliminates one entry from the hostdevs array, but doesn't free it;
patterned after the code at the end of the two
qemuDomainDetachHostXXXDevice functions (and also other pre-existing
virDomainXXXRemove functions for other device types).

virDomainHostdevFind:

This function is patterned from the search loops at the top of
qemuDomainDetachHostPciDevice and qemuDomainDetachHostUsbDevice, and
will be used to re-factor those (and other detach-related) functions.
2012-03-05 23:24:09 -05:00
Laine Stump
29293930a9 conf: make hostdev info a separate object
In order to allow for a virDomainHostdevDef that uses the
virDomainDeviceInfo of a "higher level" device (such as a
virDomainNetDef), this patch changes the virDomainDeviceInfo in the
HostdevDef into a virDomainDeviceInfoPtr. Rather than adding checks
all over the code to check for a null info, we just guarantee that it
is always valid. The new function virDomainHostdevDefAlloc() allocates
a virDomainDeviceInfo and plugs it in, and virDomainHostdevDefFree()
makes sure it is freed.

There were 4 places allocating virDomainHostdevDefs, all of them
parsers of one sort or another, and those have all had their
VIR_ALLOC(hostdev) changed to virDomainHostdevDefAlloc(). Other than
that, and the new functions, all the rest of the changes are just
mechanical removals of "&" or changing "." to "->".
2012-03-05 23:23:44 -05:00
Laine Stump
513fc05750 fix alphabetical order of virNetlink functions in symbol file 2012-02-29 15:26:13 -05:00
D. Herrendoerfer
e3ba402581 util: Add netlink event handling to virnetlink.c
This code adds a netlink event interface to libvirt.
It is based upon the event_poll code and makes use of
it. An event is generated for each netlink message sent
to the libvirt pid.

Signed-off-by: D. Herrendoerfer <d.herrendoerfer@herrendoerfer.name>
2012-02-29 10:37:24 -05:00
Osier Yang
7eadfddad5 conf: Add helper function to look up disk controller model 2012-02-28 14:27:08 +08:00
Peter Krempa
3f4238d771 util: Add helpers for safe domain console operations
This patch adds a set of functions used in creating console streams for
domains using PTYs and ensures mutually exclusive access to the PTYs.

If mutually exclusive access is not used, two clients may open the same
console, which results in corruption on both clients as both of them
race to read data from the PTY.

Two approaches are used to ensure this:
1) Internal data structure holding open PTYs.
        This is used internally and enables the user to forcibly
        terminate another console connection eg. when somebody leaves
        the console open on another host.

2) UUCP style lock files:
        This uses UUCP lock files according to the  FHS
        ( http://www.pathname.com/fhs/pub/fhs-2.3.html#VARLOCKLOCKFILES )
        to check if other programs (like minicom) are not using the pty
        device of the console.

        This feature is disabled by default and may be enabled using
        configure parameter
        --with-console-lock-files=/path/to/lock/file/directory
        or --with-console-lock-files=auto (which tries to infer the
        location from OS used (currently only linux).

        On usual linux systems, normal users may not write to the
        /var/lock directory containing the locks. This poses problems
        while in session mode. If the current user has no access to the
        lockfile directory, check for presence of the file is still
        done, but no lock file is created. This does NOT result in an
        error.
2012-02-27 15:05:17 +01:00
Martin Kletzander
9f748277bb Fixed URI parsing
Function xmlParseURI does not remove square brackets around IPv6
address when parsing. One of the solutions is making wrappers around
functions working with xmlURI*. This assures that uri->server will be
always properly assigned and it doesn't have to be changed when used
on some new place in the code.
For this purpose, functions virParseURI and virSaveURI were
added. These function are wrappers around xmlParseURI and xmlSaveUri
respectively.
Also there is one new syntax check function to prohibit these functions
anywhere else.

File changes:
 - src/util/viruri.h        -- declaration
 - src/util/viruri.c        -- definition
 - src/libvirt_private.syms -- symbol export
 - src/Makefile.am          -- added source and header files
 - cfg.mk                   -- added sc_prohibit_xmlURI
 - all others               -- ID name and include fixes
2012-02-24 16:49:21 -07:00
Jiri Denemark
5fadb1549d Introduce virStorageFileIsClusterFS 2012-02-23 14:23:45 +01:00
Ansis Atteka
df81004632 network: support Open vSwitch
This patch allows libvirt to add interfaces to already
existing Open vSwitch bridges. The following syntax in
domain XML file can be used:

    <interface type='bridge'>
      <mac address='52:54:00:d0:3f:f2'/>
      <source bridge='ovsbr'/>
      <virtualport type='openvswitch'>
        <parameters interfaceid='921a80cd-e6de-5a2e-db9c-ab27f15a6e1d'/>
      </virtualport>
      <address type='pci' domain='0x0000' bus='0x00'
                          slot='0x03' function='0x0'/>
    </interface>

or if libvirt should auto-generate the interfaceid use
following syntax:

    <interface type='bridge'>
      <mac address='52:54:00:d0:3f:f2'/>
      <source bridge='ovsbr'/>
      <virtualport type='openvswitch'>
      </virtualport>
      <address type='pci' domain='0x0000' bus='0x00'
                          slot='0x03' function='0x0'/>
    </interface>

It is also possible to pass an optional profileid. To do that
use following syntax:

   <interface type='bridge'>
     <source bridge='ovsbr'/>
     <mac address='00:55:1a:65:a2:8d'/>
     <virtualport type='openvswitch'>
       <parameters interfaceid='921a80cd-e6de-5a2e-db9c-ab27f15a6e1d'
                   profileid='test-profile'/>
     </virtualport>
   </interface>

To create Open vSwitch bridge install Open vSwitch and
run the following command:

    ovs-vsctl add-br ovsbr
2012-02-15 16:04:54 -05:00
Laine Stump
9368465f75 conf: rename virDomainNetGetActualDirectVirtPortProfile
An upcoming patch will add a <virtualport> element to interfaces of
type='bridge', so it makes sense to give this function a more generic
name.
2012-02-15 16:04:53 -05:00
Osier Yang
7c90026db9 npiv: Auto-generate WWN if it's not specified
The auto-generated WWN comply with the new addressing schema of WWN:

<quote>
the first nibble is either hex 5 or 6 followed by a 3-byte vendor
identifier and 36 bits for a vendor-specified serial number.
</quote>

We choose hex 5 for the first nibble. And for the 3-bytes vendor ID,
we uses the OUI according to underlying hypervisor type, (invoking
virConnectGetType to get the virt type). e.g. If virConnectGetType
returns "QEMU", we use Qumranet's OUI (00:1A:4A), if returns
ESX|VMWARE, we use VMWARE's OUI (00:05:69). Currently it only
supports qemu|xen|libxl|xenapi|hyperv|esx|vmware drivers. The last
36 bits are auto-generated.
2012-02-10 12:53:25 +08:00
Daniel P. Berrange
21fe874832 Update symbols file for virFileDirectFd/virFileWrapperFd rename 2012-02-08 19:50:15 +00:00
D. Herrendoerfer
d04394288f util: rename netlink.[ch] to virnetlink.[ch]
Rename the src/util/netlink files to src/util/virnetlink to
better fit the naming scheme. Also rename nlComm to virNetlinkCommand.

Signed-off-by: D. Herrendoerfer <d.herrendoerfer@herrendoerfer.name>
2012-02-03 15:27:40 -05:00