1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
|
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<!--
This file is autogenerated from news.html.in
Do not edit this file. Changes will be lost.
-->
<head>
<link rel="stylesheet" type="text/css" href="main.css" />
<link rel="SHORTCUT ICON" href="32favicon.png" />
<title>libvirt: Releases</title>
<meta name="description" content="libvirt, virtualization, virtualization API" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
</head>
<body>
<div id="body">
<div id="content">
<h1>Releases</h1>
<p>This is the list of official releases for libvirt, along with an
overview of the changes introduced by each of them.</p>
<p>For a more fine-grained view, use the
<a href="http://libvirt.org/git/?p=libvirt.git;a=log" shape="rect">git log</a>.
</p>
<h3>
<strong>v3.0.0 (2017-01-17)</strong>
</h3>
<ul><li>
<strong>New features</strong>
<ul><li>
Domain events for metadata content changes
<br />
The domain events framework has a new event ID that can
be used to get notifications when domain metadata content
changes.
</li><li>
Event notifications for the secret object
<br />
The secret object now supports event notifications, covering
lifcycle changes and secret value changes.
</li><li>
New localPtr attribute for "ip" element in network XML
</li><li>
qemu: Support QEMU group I/O throttling
<br />
Add the capability to allow group I/O throttling via a new
domain <disk> <iotune> subelement "group_name"
to allow sharing I/O throttling quota between multiple drives.
</li><li>
nss: Introduce <code>libvirt_guest</code>
<br />
New <code>libvirt_guest</code> nss module that translates libvirt
guest names into IP addresses.
</li><li>
daemon: Add support for runtime logging settings adjustment
<br />
Logging-related settings like log outputs and filters can now be
adjusted during runtime using the admin interface without the
necessity of the daemon's restart.
</li><li>
storage: Add virStorageVolInfoFlags API
<br />
Add the API to support using the VIR_STORAGE_VOL_GET_PHYSICAL
flag in order to return the host physical size in bytes
of the image container in the allocation field of the
_virStorageVolInfo structure. The --physical flag has been
added to the virsh vol-info command to access the data.
</li><li>
libxl: Implement virDomainGetMaxVcpus API
</li><li>
storage: Add overwrite flag checking for logical pool
<br />
Add support for the OVERWRITE flags for the logical storage
backend including checking for existing data on the target
volumes when building a new logical pool on target volume(s).
</li><li>
qemu: Add support for guest CPU configuration on s390(x)
</li></ul>
</li><li>
<strong>Improvements</strong>
<ul><li>
perf: Add more perf statistics
<br />
Add support to get the count of branch instructions
executed, branch misses, bus cycles, stalled frontend
cpu cycles, stalled backend cpu cycles, and ref cpu
cycles by applications running on the platform.
</li><li>
conf: Display <physical> for volume xml
<br />
Add a display of the <physical> size of a disk
volume in the output of the volume XML.
</li><li>
qemu: Use virtio-pci by default for aarch64 mach-virt guests
<br />
virtio-pci provides several advantages over virtio-mmio, such
as the ability to hotplug devices and improved performance.
While opting in to virtio-pci has been possible for a while,
newly-defined guests will now use it automatically.
</li><li>
vbox: remove support for VirtualBox 3.x and older
<br />
Those old VirtualBox versions have been unsupported by
upstream for a long time and the API of 4.0 and newer has
diverged enough to require code abstractions to handle differences.
Removing support for those old versions drops lots of code from
the driver and simplifies the logic to ease implementation of new
features going forward.
</li><li>
virsh: pool-info: introduce option --bytes
<br />
Add option --bytes to virsh pool-info in order ti allow display
of units in bytes rather than default of human readable output.
</li><li>
scsi: Add parent wwnn/wwpn or fabric capability for createVport
<br />
Improve the algorithm searching for the parent scsi_host device
for vHBA/NPIV scsi_host creation. Rather than supplying the
"parent" by name, it's now possible to define the parent by
it's wwnn/wwpn or fabric_wwn in the node device create XML or
the storage pool XML.
</li><li>
qemu: aggregate pcie-root-ports onto multiple functions of a slot
<br />
When pcie-root-ports are added to pcie-root in order to
provide a place to connect PCI Express endpoint devices,
libvirt now aggregates multiple root ports together onto the
same slot (up to 8 per slot) in order to conserve slots.
Using this method, it's possible to connect more than 200
endpoint devices to a guest that uses PCIe without requiring
setup of any PCIe switches.
</li></ul>
</li><li>
<strong>Bug fixes</strong>
<ul><li>
lxc: fix accidental killing of containers during libvirtd restart
<br />
The libvirt_lxc process was previously not moved into the
container scope. As a result, if systemd reloads its config
after a container is started, when libvirtd is later restarted
it will accidentally kill the containers.
</li><li>
qemu: Correct GetBlockInfo values
<br />
For an active domain, correct the physical value provided for
a raw sparse file backed storage and the allocation value provided
for a qcow2 file backed storage that hasn't yet been opened on
the domain.
</li><li>
qemu: Make virtio console usable on ppc64 guests
<br />
The chardev detection code has been improved and can now handle this
configuration properly.
</li><li>
qemu: Enable mount namespace
<br />
To avoid funny races with udev relabelling devices under our hands and
to enhance security, libvirt now spawns each qemu process with its own
<code>/dev</code>.
</li><li>
storage: Fix implementation of no-overwrite for file system backend
<br />
Fix file system storage backend implementation of the OVERWRITE
flags to be consistent between code and documentation. Add checks
to ensure that when building a new file system on a target volume
that there is not something already on the disk in a format that
libvirt can recognize.
</li><li>
qemu: Create hugepage path on per domain basis
<br />
Historically, all hugepage enabled domains shared the same path under
hugetlbfs. This left libvirt unable to correctly set security labels
on it. With this release, however, each domain is put into a
separate path which is also correctly labeled.
</li><li>
conf: Reject domains with duplicate drive addresses
<br />
Reject duplicate drive addresses for disks and hostdevs at
domain definition.
</li><li>
libxl: reverse defaults on HVM net device attach
<br />
Fixes network interface attach for HVM domains when no model is
specified. Emulated hotplug isn't yet supported and hence we should
default to the general working scenario.
</li><li>
libxl: always enable pae for x86_64 HVM
<br />
By default pae is disabled in libxl. Without an explicit <pae/>
setting in the domain <features> configuration, an x86_64 HVM
domain would be get an i686 environment. pae should always be enabled
for x86_64 HVM domains.
</li></ul>
</li></ul>
<h3>
<strong>v2.5.0 (2016-12-04)</strong>
</h3>
<ul><li>
<strong>New features</strong>
<ul><li>
shmem: Add support for additional models
<br />
The shmem device can now utilize QEMU's ivshmem-plain and
ivshmem-doorbell, more modern versions of ivshmem.
</li><li>
vbox: Add VirtualBox 5.1 support
</li><li>
libssh: New transport
<br />
The new libssh transport allows one to connect to a running
libvirtd via SSH, using the libssh library; for example:
<tt>qemu+libssh://<i>server</i>/system</tt>.
</li><li>
vhost-scsi: Add support scsi_host hostdev passthrough
<br />
Add the capability to pass through a scsi_host HBA and the
associated LUNs to the guest.
</li><li>
qemu: Users can now enable debug logging for native gluster
volumes in qemu using the "gluster_debug_level" option in qemu.conf
</li><li>
memory hotplug: Slot numbers for memory devices are now
automatically allocated and thus persistent. In addition slot numbers
can be specified without providing a base address, which simplifies
user configuration
</li><li>
qemu: Express devices will be placed on PCIe bus by default
<br />
For machine types that use a PCI Express root bus
(e.g. x86_64/Q35 and aarch64/virt), any unaddressed PCI
device that is an Express device (all virtio-1.0 devices,
e1000e, nec-xhci, vfio assigned devices) will be placed on
an Express controller (i.e. a pcie-root-port) instead of a
legacy PCI controller (i.e. pci-bridge) with the root ports
added as needed.
</li></ul>
</li><li>
<strong>Improvements</strong>
<ul><li>
docs: Better documentation for migration APIs and flags
</li><li>
vbox: Address thread safety issues
</li><li>
virsh: Add support for passing an alternative persistent XML
to migrate command
</li><li>
vhostuser: Allow hotplug of multiqueue devices
</li><li>
NEWS: Switch to an improved format
<br />
List user-visible changes instead of single commits for a better
high-level overview of differences between libvirt releases.
</li><li>
website: Modernize layout and branding
<br />
The libvirt website looked very cluttered and outdated; it has now
been completely overhauled, resulting in a design that's better
organized and more pleasant to look at.
</li></ul>
</li><li>
<strong>Bug fixes</strong>
<ul><li>
vz: Fix migration in P2P mode
</li><li>
Forbid newline character in names of some libvirt objects
</li><li>
Fix compilation on macOS
</li></ul>
</li></ul>
<p>Older libvirt releases didn't have proper release notes,
and as such are not included in this page: if you're looking
for information about them, start from those made in
<a href="news-2016.html" shape="rect">2016</a> and work your way back.</p>
</div>
</div>
<div id="nav">
<div id="home">
<a href="index.html">Home</a>
</div>
<div id="jumplinks">
<ul><li>
<a href="downloads.html">Download</a>
</li><li>
<a href="contribute.html">Contribute</a>
</li><li>
<a href="docs.html">Learn</a>
</li></ul>
</div>
<div id="search">
<form action="search.php" enctype="application/x-www-form-urlencoded" method="get"><div>
<input name="query" type="text" size="12" value="" />
<input name="submit" type="submit" value="Go" />
</div></form>
</div>
</div>
<div id="footer">
<div id="contact">
<h3>Contact</h3>
<ul><li>
<a href="contact.html#email">email</a>
</li><li>
<a href="contact.html#irc">irc</a>
</li></ul>
</div>
<div id="community">
<h3>Community</h3>
<ul><li>
<a href="https://twitter.com/hashtag/libvirt">twitter</a>
</li><li>
<a href="https://plus.google.com/communities/109522598353007505282">google+</a>
</li><li>
<a href="http://stackoverflow.com/questions/tagged/libvirt">stackoverflow</a>
</li><li>
<a href="http://serverfault.com/questions/tagged/libvirt">serverfault</a>
</li></ul>
</div>
<div id="conduct">
Participants in the libvirt project agree to abide by <a href="governance.html#codeofconduct">the project code of conduct</a></div>
<br class="clear" />
</div>
</body>
</html>
|
