Red Hat Enterprise Virtualization
3.1
Manager Release Notes
Release notes for Red Hat Enterprise Virtualization Manager 3.1
Edition 1
Steve Gordon
Red Hat Enterprise Virtualization 3.1 Manager Release Notes
Release notes for Red Hat Enterprise Virtualization Manager 3.1
Edition 1
Steve Gordon
sgordon@redhat.com
Legal Notice
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Abstract
The Release Notes provide high-level coverage of the improvements and additions that have been
implemented in Red Hat Enterprise Virtualization 3.1. For a detailed list of all changes included in Red
Hat Enterprise Virtualization 3.1, refer to the Technical Notes.
Table of Contents
Table of Contents
. . fa. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3. . . . . . . . . .
Pr.e. . ce
1. Document Conventions 3
1.1. Typographic Conventions 3
1.2. Pull-quote Conventions 4
1.3. Notes and Warnings 5
2. Getting Help and Giving Feedback 5
2.1. Do You Need Help? 5
2.2. We Need Feedback! 6
. ha.pt.e. . . . . . oduct . . .
C. . . . r 1.. Int.r . . . . . . ion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7. . . . . . . . . .
1.1. Introduction to Red Hat Enterprise Virtualization 3.1 7
1.2. What's New? 7
1.2.1. Administration Portal Features 7
1.2.2. Backend Features 7
1.2.3. Developer Features 8
1.2.4. Guest Features 8
1.2.5. Networking Features 9
1.2.6. Platform Features 10
1.2.7. Reporting Features 10
1.2.8. Storage Features 10
1.2.9. User Portal Features 12
1.2.10. VDI Features 12
1.2.11. Virtualization Host Features 13
. ha.pt.e. . . . . e.chnica . . . . .es. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C. . . . r 2.. T . . . . . . . l Not . . 1.4. . . . . . . . . .
2.1. Recommended Practices 14
2.2. Known Issues 15
2.3. Resolved Issues 20
2.4. Security 20
. . vision Hist.ory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Re. . . . . . . . . . . . . 2.2. . . . . . . . . .
1
Red Hat Enterprise Virtualization 3.1 Manager Release Notes
2
Preface
Preface
1. Document Conventions
This manual uses several conventions to highlight certain words and phrases and draw attention to
specific pieces of information.
In PDF and paper editions, this manual uses typefaces drawn from the Liberation Fonts set. The
Liberation Fonts set is also used in HTML editions if the set is installed on your system. If not, alternative
but equivalent typefaces are displayed. Note: Red Hat Enterprise Linux 5 and later include the Liberation
Fonts set by default.
1.1. Typographic Conventions
Four typographic conventions are used to call attention to specific words and phrases. These
conventions, and the circumstances they apply to, are as follows.
Mono-spaced Bold
Used to highlight system input, including shell commands, file names and paths. Also used to highlight
keys and key combinations. For example:
To see the contents of the file my_next_bestselling_novel in your current working
directory, enter the cat my_next_bestselling_novel command at the shell prompt
and press Enter to execute the command.
The above includes a file name, a shell command and a key, all presented in mono-spaced bold and all
distinguishable thanks to context.
Key combinations can be distinguished from an individual key by the plus sign that connects each part of
a key combination. For example:
Press Enter to execute the command.
Press Ctrl+Alt+F2 to switch to a virtual terminal.
The first example highlights a particular key to press. The second example highlights a key combination:
a set of three keys pressed simultaneously.
If source code is discussed, class names, methods, functions, variable names and returned values
mentioned within a paragraph will be presented as above, in mono-spaced bold. For example:
File-related classes include filesystem for file systems, file for files, and dir for
directories. Each class has its own associated set of permissions.
Proportional Bold
This denotes words or phrases encountered on a system, including application names; dialog box text;
labeled buttons; check-box and radio button labels; menu titles and sub-menu titles. For example:
Choose System Preferences Mouse from the main menu bar to launch Mouse
Preferences. In the Buttons tab, select the Left-handed mouse check box and click
Close to switch the primary mouse button from the left to the right (making the mouse
suitable for use in the left hand).
To insert a special character into a gedit file, choose Applications Accessories
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Red Hat Enterprise Virtualization 3.1 Manager Release Notes
Character Map from the main menu bar. Next, choose Search Find& from the
Character Map menu bar, type the name of the character in the Search field and click
Next. The character you sought will be highlighted in the Character Table. Double-click
this highlighted character to place it in the Text to copy field and then click the Copy
button. Now switch back to your document and choose Edit Paste from the gedit menu
bar.
The above text includes application names; system-wide menu names and items; application-specific
menu names; and buttons and text found within a GUI interface, all presented in proportional bold and all
distinguishable by context.
Mono-spaced Bold Italic or Proportional Bold Italic
Whether mono-spaced bold or proportional bold, the addition of italics indicates replaceable or variable
text. Italics denotes text you do not input literally or displayed text that changes depending on
circumstance. For example:
To connect to a remote machine using ssh, type ssh username@domain.name at a shell
prompt. If the remote machine is example.com and your username on that machine is
john, type ssh john@example.com.
The mount -o remount file-system command remounts the named file system. For
example, to remount the /home file system, the command is mount -o remount /home.
To see the version of a currently installed package, use the rpm -q package command. It
will return a result as follows: package-version-release.
Note the words in bold italics above  username, domain.name, file-system, package, version and
release. Each word is a placeholder, either for text you enter when issuing a command or for text
displayed by the system.
Aside from standard usage for presenting the title of a work, italics denotes the first use of a new and
important term. For example:
Publican is a DocBook publishing system.
1.2. Pull-quote Conventions
Terminal output and source code listings are set off visually from the surrounding text.
Output sent to a terminal is set in mono-spaced roman and presented thus:
books Desktop documentation drafts mss photos stuff svn
books_tests Desktop1 downloads images notes scripts svgs
Source-code listings are also set in mono-spaced roman but add syntax highlighting as follows:
4
Preface
static int kvm_vm_ioctl_deassign_device(struct kvm *kvm,
struct kvm_assigned_pci_dev *assigned_dev)
{
int r = 0;
struct kvm_assigned_dev_kernel *match;
mutex_lock(&kvm->lock);
match = kvm_find_assigned_dev(&kvm->arch.assigned_dev_head,
assigned_dev->assigned_dev_id);
if (!match) {
printk(KERN_INFO "%s: device hasn't been assigned before, "
"so cannot be deassigned\n", __func__);
r = -EINVAL;
goto out;
}
kvm_deassign_device(kvm, match);
kvm_free_assigned_device(kvm, match);
out:
mutex_unlock(&kvm->lock);
return r;
}
1.3. Notes and Warnings
Finally, we use three visual styles to draw attention to information that might otherwise be overlooked.
Note
Notes are tips, shortcuts or alternative approaches to the task at hand. Ignoring a note should
have no negative consequences, but you might miss out on a trick that makes your life easier.
Important
Important boxes detail things that are easily missed: configuration changes that only apply to the
current session, or services that need restarting before an update will apply. Ignoring a box
labeled 'Important' will not cause data loss but may cause irritation and frustration.
Warning
Warnings should not be ignored. Ignoring warnings will most likely cause data loss.
2. Getting Help and Giving Feedback
2.1. Do You Need Help?
If you experience difficulty with a procedure described in this documentation, visit the Red Hat Customer
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Red Hat Enterprise Virtualization 3.1 Manager Release Notes
Portal at http://access.redhat.com. Through the customer portal, you can:
search or browse through a knowledgebase of technical support articles about Red Hat products.
submit a support case to Red Hat Global Support Services (GSS).
access other product documentation.
Red Hat also hosts a large number of electronic mailing lists for discussion of Red Hat software and
technology. You can find a list of publicly available mailing lists at https://www.redhat.com/mailman/listinfo.
Click on the name of any mailing list to subscribe to that list or to access the list archives.
2.2. We Need Feedback!
If you find a typographical error in this manual, or if you have thought of a way to make this manual
better, we would love to hear from you! Please submit a report in Bugzilla: http://bugzilla.redhat.com/
against the product Red Hat Enterprise Virtualization Manager.
When submitting a bug report, be sure to mention the manual's identifier: Guides
If you have a suggestion for improving the documentation, try to be as specific as possible when
describing it. If you have found an error, please include the section number and some of the surrounding
text so we can find it easily.
6
Chapter 1. Introduction
Chapter 1. Introduction
1.1. Introduction to Red Hat Enterprise Virtualization 3.1
Red Hat Enterprise Virtualization is a feature-rich server and desktop virtualization management system.
It provides advanced capabilities for managing virtualization hosts and virtualized guests.
1.2. What's New?
1.2.1. Administration Portal Features
These Administration Portal features have been added since the release of Red Hat Enterprise
Virtualization 3.0:
Cross-platform User Interface
The new web administration portal interface introduced as a technology preview in Red Hat
Enterprise Virtualization 3.0 is now the supported interface for connecting to the Administration
Portal. The Administration Portal is now accessible using Mozilla Firefox 10 or later on Red Hat
Enterprise Linux and Internet Explorer 9 or later on Microsoft Windows. The new user interface
is provided as a complete replacement of the Windows Presentation Framework (WPF)
interface used to access the Administration Portal in previous releases.
Internationalization
The Administration Portal has been localized. Initial support for English, French, German,
Spanish, Japanese, and Simplified Chinese is provided.
User Experience
The new Administration Portal interface greatly improves upon the overall user experience.
1.2.2. Backend Features
These backend features have been added since the release of Red Hat Enterprise Virtualization 3.0:
Remote PostgreSQL Database Support
Previously the rhevm -setup script only supported the use of a local PostgreSQL database
when installing the Manager. The rhevm-setup script now supports the use of a remote
PostgreSQL database.
Default HTTP and HTTPS Ports
Previously Red Hat Enterprise Virtualization Manger listened for incoming connections on ports
8080 and 8443 by default. The defaults have changed and Red Hat Enterprise Virtualization
Manager now listens for incoming connections on the standard HTTP and HTTPS ports (80
and 443).
Cancel Migration
Support for canceling virtual machine migration tasks has been added to both the user facing
interfaces and the application programming interfaces.
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Red Hat Enterprise Virtualization 3.1 Manager Release Notes
1.2.3. Developer Features
These developer features have been added since the release of Red Hat Enterprise Virtualization 3.0:
Linux Command Line Interface
A command line interface for interacting with Red Hat Enterprise Virtualization Manager, using
the REST API, is now available. The Red Hat Enterprise Virtualization 3.1 Command Line Shell
Guide provides instructions on installing and using the command line interface.
Python Software Development Kit (SDK)
A Python SDK for interacting with Red Hat Enterprise Virtualization Manager, using the REST
API, is now available. The Red Hat Enterprise Virtualization 3.1 Developer Guide provides
instructions on installing and using the SDK as well as an extended reference for the REST API
itself.
Session Support
The REST API now supports sessions. This mean it is no longer necessary to send
authentication credentials with each and every request to the REST API.
Non-administrative User API Access
Users without administrator access are now able to access the REST API. Users have the
same permissions when accessing the system through the REST API as they have been
granted by the Red Hat Enterprise Virtualization environment's administrator.
Quota Management Support (Technology Preview)
Support for managing quotas is available to users of the Software Development Kit, Command
Line Shell, and REST API. This functionality is offered as a technology preview.
Important
For more information on the support scope for features marked as technology previews refer to
https://access.redhat.com/support/offerings/techpreview/
1.2.4. Guest Features
These guest features have been added since the release of Red Hat Enterprise Virtualization 3.0:
Windows Driver Deployment
The virtio-win drivers for Windows guests are now available as inf and ini files on the guest
tools ISO. They also remain available on the virtual floppy disk (VFD).
CPU Pinning
It is now possible to pin the virtual CPUs (vCPUs) of a guest virtual machine to specific physical
CPU cores on the host from the user interface. CPU pinning options are available from the
Host tab of the Edit Desktop Virtual Machine and Edit Server Virtual
8
Chapter 1. Introduction
Machine dialog boxes.
Stable Device Addresses
Devices attached to guest virtual machines now retain the same address allocations as other
devices are added to and/or removed from the virtual machine.
Memory Balloon Device
The virtio-balloon device is used to control the amount of memory a guest accesses. It
offers an opportunity for increased memory over-commitment. By default the virtio-balloon
device is enabled for all virtual machines in 3.1 compatible clusters. The device may be disabled
using the REST API.
At this time the Manager does not however manage the balloon functionality. Users wishing to
make use of this functionality must ensure that the memory balloon device driver from the Red
Hat Enterprise Virtualization guest tools is installed on their virtual machines. Additionally an
administrator must provide a mechanism to control the memory balloon to make use of the
device.
1.2.5. Networking Features
These networking features have been added since the release of Red Hat Enterprise Virtualization 3.0:
Hot Plug Support for Virtual Network Interface Cards (vNICs)
Hot plugging and unplugging of vNICs attached to a virtual machine is now supported. It is no
longer necessary to stop the virtual machine before adding or removing vNICs.
Bridge-less Network Support
It is now possible to define logical networks on a virtualization host without requiring a bridge to
support that network. A bridge is now only required if the logical network is marked as a virtual
machine network, other logical network types do not require a bridge.
New Network Setup Dialog
The network setup dialog box has been updated to better support complex networking
operations. It is now possible to add or remove networks, add or remove bonds, and attach
networks to bonds or detach networks from bonds in a single transaction.
Port Mirroring
It is now possible to configure the virtual Network Interface Card (vNIC) of a virtual machine to
run in promiscuous mode. This allows the virtual machine to monitor all traffic to other vNICs
exposed by the host on which it runs. This facility is useful for intrusion detection and other
virtual appliances. Only users for which administrators have defined a custom role with the
Manipulate port mirroring action group attached to it will be able to enable or disable
port mirroring for a virtual machine.
Configurable Maximum Transmission Unit (MTU)
Support for configuring the MTU of a logical network is now available from the Edit Logical
Network screen.
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Red Hat Enterprise Virtualization 3.1 Manager Release Notes
Default Network Filter (nwfilter) Rules for all Virtual Machines
By default nwfilter rules are now defined for all virtual machines, enhancing security. To
disable this functionality set the value of the EnableMACAntiSpoofingFilterRules
configuration key to False using the rhevm-config command.
1.2.6. Platform Features
These platform features have been added since the release of Red Hat Enterprise Virtualization 3.0:
JBoss Enterprise Application Platform (EAP) 6
Red Hat Enterprise Virtualization 3.1 is delivered using the power of the recently released
JBoss EAP 6.
Red Hat Directory Server (RHDS) support
User authentication using RHDS domains is now supported. This comes in addition to existing
support for Identity, Policy, Audit (IPA) and Active Directory (AD) domains.
Tasks
A Tasks tab has been added to the Administration Portal, supporting the monitoring of long
running operations and tasks in the system.
Quotas (Technology Preview)
Administrators now have the ability to enable quota mode for a data center. With quota mode
enabled administrators have the ability to define per-user quotas for storage resources (disk
space) and run-time resources (CPU usage and memory). This functionality is offered as a
technology preview.
Important
For more information on the support scope for features marked as technology previews refer to
https://access.redhat.com/support/offerings/techpreview/.
1.2.7. Reporting Features
These reporting features have been added since the release of Red Hat Enterprise Virtualization 3.0:
Administration Portal Integration
Reporting functionality is now exposed from within the Administration Portal itself. While the
standalone Reporting Portal is still available it now offers single sign-on support, allowing the
same authentication credentials to be used for both systems. Additionally reporting dashboards
for the system, specific data centers, or specific clusters, are now available from the
Dashboard tab.
1.2.8. Storage Features
10
Chapter 1. Introduction
These storage features have been added since the release of Red Hat Enterprise Virtualization 3.0:
Live Snapshots
Creation of live snapshots is now supported. Snapshots of a virtual machine can now be
created without first having to stop it.
Clone Virtual Machine from Snapshot
Support for creating virtual machines from snapshots has been added. This allows users to
create copies of the state of a virtual machine as it was at the specific point in time at which the
snapshot was taken.
Disk Management
Disks now have an elevated status and can be managed as objects in their own right. New
features enabled by this change include floating disks and shared disks.
Floating Disks are not necessarily attached to a virtual machine at any one point in time.
Floating disks can be attached, and detached, from virtual machines throughout the data
center as required.
Shared Disks are disks that are attached to multiple virtual machines at the same time.
Once you have installed Red Hat Enterprise Virtualization Manager, log in to the Administration
Portal and click the Disks tab to begin managing disks.
Hot Plugging and Unplugging of Disks
It is now possible to attach disks to, and detach disks from, virtual machines without first having
to stop the virtual machine.
Direct LUN Support
It is now possible to attach any block device to a virtual machine as a disk by specifying the
block device's GUID. It is no longer necessary to use the directlun VDSM hook script to
perform this task.
Cross Storage Domain Virtual Machines
It is now possible to create a virtual machine which has disks on multiple different storage
domains. Previously all disks for a virtual machine had to be stored on the same storage
domain.
POSIX Compliant Filesystems (POSIXFS)
Support has been added for storage domains backed by POSIX compliant file systems. This
support enables the use of file systems other than those already supported by Red Hat
Enterprise Virtualization.
Network File System (NFS) Version 4 Support
Support for storage exported using NFSv4 has been added to Red Hat Enterprise
Virtualization. In addition it is now possible to set additional NFS mount options from the
Administration Portal.
Automatic Storage Domain Recovery
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Red Hat Enterprise Virtualization 3.1 Manager Release Notes
When a storage domain becomes temporarily inactive or non-operational Red Hat Enterprise
Virtualization Manager will now automatically recover and update the status of the storage
domain as Up when it becomes available again.
Configurable Storage Pool Manager (SPM) Priority
Hosts now have an SPM Priority attribute allowing administrators to influence the SPM
selection process. Valid priority values range are Low, Normal, and High. Hosts with a priority
of High are most likely to be selected by the Manager as the SPM. By default all hosts are
assigned an SPM priority of Normal until such time as an administrative user changes it.
Storage Live Migration (Technology Preview)
Initial support for storage live migration is available in Red Hat Enterprise Virtualization 3.1. This
allows migration of virtual machine disks to different storage devices without first shutting the
virtual machine down. This functionality is offered as a technology preview.
Integrated Red Hat Storage Management (Technology Preview)
Initial support for managing Red Hat Storage volumes and bricks using Red Hat Enterprise
Virtualization Manager is offered as a technology preview.
Important
For more information on the support scope for features marked as technology previews refer to
https://access.redhat.com/support/offerings/techpreview/.
1.2.9. User Portal Features
These User Portal features have been added since the release of Red Hat Enterprise Virtualization 3.0:
Disk and Quota Support
The User Portal has been updated to support new quota and disk features.
Internationalization
The User Portal has been localized. Initial support for English, French, German, Spanish,
Japanese, and Simplified Chinese is provided.
1.2.10. VDI Features
These VDI features have been added since the release of Red Hat Enterprise Virtualization 3.0:
Enhanced Virtual Machine Pools
It is now possible to configure a queue of virtual machines from a pool to be running without
having been assigned to a user. As users with access to the pool sign in they will be assigned
a virtual machine from the queue, shortening the time required for users to start and sign in to a
virtual machine from the pool.
12
Chapter 1. Introduction
Enhanced SPICE client
An updated SPICE client, including native USB 2.0 support and USB support for Linux guests, is
now included in Red Hat Enterprise Virtualization.
Multiple Monitor Support for Red Hat Enterprise Linux Guests
The Administration and User Portals now support the configuration of multiple monitors for Red
Hat Enterprise Linux guests.
Additional Wide Area Network (WAN) Configuration Options
Additional SPICE configuration options have been added to provide improved performance in
WAN environments. The new configuration keys available to be set using the rhevm-config
command are:
WANDisableEffects: The WAN effects to disable in SPICE consoles. Valid values are
anim ation, wallpaper, font-smooth, all.
WANColorDepth: The WAN color depth value to send to SPICE consoles. Valid values are
16 and 32.
An additional Enable WAN Options check box has been added to Console Options
shown in the Administration and User Portal. Selecting the check box indicates that the console
is being launched over a WAN connection. This results in the values of the
WANDisableEffects and WANColorDepth configuration keys being applied to the SPICE
console.
1.2.11. Virtualization Host Features
These virtualization host features have been added since the release of Red Hat Enterprise
Virtualization 3.0:
Increased CPU Support
Red Hat Enterprise Virtualization now supports virtualization hosts using:
Intel Core i3, i5, and i7 CPUs  code named "Sandy Bridge", and
AMD 15h, or Opteron G4, CPUs  code named "Bulldozer".
Common Information Model (CIM) Support
Support has been added for configuring Red Hat Enterprise Virtualization Hypervisors for use
with existing CIM management infrastructure. Once configured add the Hypervisor to your
Common Information Model Object Manager (CIMOM). You will then be able to begin monitoring
the virtual machines that run on the Hypervisor from the CIMOM.
Automatic Host Recovery
When a host becomes temporarily non-operational Red Hat Enterprise Virtualization Manager
will now automatically recover and update the status of the host to Up when it becomes
available again.
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Red Hat Enterprise Virtualization 3.1 Manager Release Notes
Chapter 2. Technical Notes
2.1. Recommended Practices
You must take these recommended practices into account to ensure the best possible outcomes for
your Red Hat Enterprise Virtualization environment.
BZ#858279
The ovirt-engine service is now used to control the Red Hat Enterprise
Virtualization Manager. The jbossas service still exists but IS no longer
used to control the Manager. Starting the jbossas service launches a
standalone instance of JBoss Enterprise Application Platform 6 and will not
start Red Hat Enterprise Virtualization Manager. The jbossas service must
not be started on a machine hosting the Manager.
BZ#84 8862
The Manager is now able to automatically detect time drift on
virtualization hosts. To use this functionality, set these configuration
values using the rhevm-config command:
* EnableHostTimeDrift - Enables time drift detection, the default value is
false.
* HostTimeDriftInSec - Sets the maximum time drift allowable, in seconds,
before an alert is raised. The default value is 300.
Each time the Manager checks the state of the host it compares the system
time of the two systems, expressed in GMT. If EnableHostTimeDrift is true
and the manager detects that the times returned differ by more than
HostTimeDriftInSec then an alert is written to the log file.
A "VDS_TIME_DRIFT_ALERT" event is also raised, which can be tracked using
the event notification daemon.
BZ#84 3798
Hosts must be moved to maintenance mode before changing their Storage Pool
Manager (SPM) priority to '-1' using the REST API, otherwise the change
will not take effect. An SPM priority of '-1' indicates the host must never
be considered for the SPM role.
BZ#84 4 4 29
When making configuration changes using the rhevm-config tool it is
necessary to restart the ovirt-engine service before they will take effect.
Additionally changes to values that are cached on the client side require a
restart of the client browser to clear cached values before they will take
effect.
BZ#8564 99
14
Chapter 2. Technical Notes
In environments that contain virtual machine pools it is recommended that
you do not assign user roles other than VM_CREATOR, TEMPLATE_CREATOR, and
DISK_CREATOR at the system, data center, or cluster level.
2.2. Known Issues
These known issues exist in Red Hat Enterprise Virtualization 3.1 at this time:
Administration Portal
BZ#868964
Due to the performance constraints imposed by the JavaScript engine
included in Internet Explorer 8 it is not a supported client for the new
Administration Portal user interface. Later versions of Internet Explorer
remain supported.
Application Programming Interfaces
BZ#830517
The new Python SDK maps actions and properties directly to the REST API
with the exception of import actions. As import is a reserved keyword in
Python these actions have instead been renamed import_resource, where
resource is replaced by the resource being operated on, for example vm or
template.
BZ#830913
A new syntax for performing event search using the REST API is now
supported. The event search URI is now of the form
/api/events;from=. The existing search syntax remains supported
but is considered deprecated and will be removed in a future release.
Backend
BZ#874 4 4 3
In previous releases when the disk image of a virtual machine was being
modified or used by a task the entire virtual machine was locked. This lock
is now more specific and applies to the disk. This means that users are
still able to perform additional tasks on the virtual machine, such as
adding or removing disks, concurrently.
As a result of this change of behavior the virtual machine status may
indicate that a virtual machine is "Up" when the attached disk is in fact
being used by another task. Users will not be aware of this lock until such
time as they attempt to perform an action that requires a lock on the disk.
15
Red Hat Enterprise Virtualization 3.1 Manager Release Notes
BZ#856273
On large scale deployments, of 200 hosts and above, you may need to
increase the maximum allowed connection on the database server from the
default value of 150 to 75% of the expected number of hosts. By default
this value is found in the "/var/lib/pgsql/data/postgresql.conf" file on
the database server.
Directory Services
BZ#814 4 4 5
It is not possible to install Red Hat Enterprise Virtualization Manager
(rhevm) and IPA (ipa-server) on the same system. IPA is incompatible with
the mod_ssl package, which is required by Red Hat Enterprise Virtualization
Manager.
BZ#7394 31
Red Hat Enterprise Virtualization Manager does not support the use of user
accounts which are marked as expired in the directory server for the
domain. This applies to both Active Directory and IPA domains.
The password for the account must be changed in the directory server, re-
enabling the account, before it is used with Red Hat Enterprise
Virtualization Manager.
BZ#828877
Use of the IBM Tivoli Directory Server (ITDS) provider option of the
"rhevm-manage-domains" command is not supported in this release.
Migration
BZ#731100
Migration of a virtual machine between hosts that do not have their clocks
synchronized may lead to the virtual machine being unresponsive for a
period of time following migration. It is important to ensure that all
hosts in your virtualization environment have their clocks synchronized
using NTP.
BZ#813279
If the VDSM process is restarted while moving a virtual machine between
storage domains the task is currently only partially rolled back. This
leaves the virtual machine in an illegal state, unable to be started or
moved again. If this occurs contact Red Hat Support.
BZ#84 4 382
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Chapter 2. Technical Notes
Migration of virtual machines which have had all of their disks hot
unplugged is not supported. Such a migration will always fail.
BZ#872965
When performing live storage migration a snapshot of the entire virtual
machine is created. As a result the actual size of the migrated disk may
grow significantly even after merging of the snapshots back into it. This
primarily occurs where the disk already had snapshots before the migration
process started.
BZ#872950
Live storage migration does not support concurrent migration of disks from
a single virtual machine. Instead live migration of each disk attached to
the virtual machine must be manually initiated serially.
Roles and Permissions
BZ#84 7781
In previous versions assigning the "PowerUserRole" to a user over a data
center or cluster allowed the user to create virtual machines. The user was
only permitted to view virtual machines which they had created. In Red Hat
Enterprise Virtualization 3.1 this behavior has changed to provide
increased permission granularity for objects. The "PowerUserRole" now
grants full control over the data center or cluster including the ability
to view the virtual machines it contains.
The new "VMCreator" role grants permissions similar to those of the old
"PowerUserRole". Users with the VMCreator role over a data center or
cluster are able to create virtual machines, but are only permitted to view
virtual machines which they themselves created.
BZ#8564 99
Assigning user roles other than VM_CREATOR, TEMPLATE_CREATOR, and
DISK_CREATOR at the system, data center, or cluster level is known to
cause unexpected behaviour related to virtual machine pools in the User
Portal. Assigning administrative roles at the system, data center and
cluster level does not negatively impact virtual machine pools in the User
Portal.
SPICE
BZ#856605
When using the new Native USB Policy mode connected USB devices are always
auto-shared regardless the setting of the "Enable USB Auto-Share" option.
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Red Hat Enterprise Virtualization 3.1 Manager Release Notes
Storage
BZ#8234 37
Block devices for attachment to virtual machines are limited to 8 TB in
size. File level disk size remains unlimited by VDSM, the limits of the
underlying filesystem do however apply.
BZ#823686
To remove a storage domain it is necessary to first ensure that all disks on
the storage domain are moved or removed. This includes any disk(s) that are
associated with a template.
To manually move or remove disk(s) associated with a template:
* Open the "Templates" tab in the Administration Portal.
* Select the template from the list.
* Click the "Storage" sub-tab.
The disks associated with the template will be displayed. Select each one
and click the button associated with the desired action.
BZ#865021
If the disk of a virtual machine is moved while it is in preview mode then
it is not possible to run the virtual machine until the preview is
reverted.
BZ#854 972
When VDSM attempts to run the getFloppyList command on an NFSv4 storage
domain an error is returned if the permissions of the NFS export are not
set correctly. An error is also returned if the VDSM host is in a different
NFS domain to the storage server.
Upgrades
BZ#854 705
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Chapter 2. Technical Notes
Upgrading from Red Hat Enterprise Virtualization Manager 3.0 to 3.1 is now
supported for the majority of installations.
Known Issues:
* Upgrades of Red Hat Enterprise Virtualization 3.0 environments that
contain V1 format block (iSCSI or FCP) storage domains that (1) are larger
than 250 GB in size and (2) were created in Red Hat Enterprise
Virtualization 2.2, are not supported. Changing the compatibility mode of a
data center that contains such storage domains to 3.1 will result in a
failure. A future update will correct this issue. Please note that V1 block
storage domains created using the REST API in Red Hat Enterprise
Virtualization 3.0 are unaffected. (BZ#893184)
For more information on upgrading to Red Hat Enterprise Virtualization
Manager 3.1 consult the Installation Guide:
http://access.redhat.com/knowledge/docs/en-
US/Red_Hat_Enterprise_Virtualization/3.1/html/Installation_Guide/chap-
Upgrading_to_Red_Hat_Enterprise_Virtualization_3.1.html
Upgrades from Red Hat Enterprise Virtualization 3.1 beta releases are also
not supported.
BZ#865506
Support for export storage domains on block storage provided by iSCSI or
FCP devices has been deprecated. If the "rhevm-upgrade" script detects
export storage domains on block storage devices then it will exit.
To complete the upgrade you must remove the offending export storage
domains from the environment and run the "rhevm-upgrade" script again.
BZ#869653
When a Hypervisor is upgraded for Red Hat Enterprise Virtualization 3.1
compatibility the upgraded host will initially be listed in the
Administration Portal as unreachable or in maintenance mode. This will be
the case even where the upgrade was successful. To resolve this issue use
the Administration Portal to put the Hypervisor into maintenance mode (if
necessary) and then activate it manually to resume normal operation.
This issue only exists when upgrading from Hypervisors that include vdsm-
4.9 to Hypervisors that include vdsm-4.9.6. The issue will not occur on
subsequent upgrades.
BZ#84 1127
All new storage domains created in Red Hat Enterprise Virtualization 3.1
must be of type "V3". This causes existing scripts that call the REST API to
create storage domains, specifying type "V2" to fail.
BZ#87774 8
19
Red Hat Enterprise Virtualization 3.1 Manager Release Notes
When upgrading to Red Hat Enterprise Virtualization 3.1 the paths for
certificate and sysprep files, stored in the vdc_options table, are reset
to their default values.
Where non-default options were in use before the upgrade they must be
restored manually using the rhevm-config command.
Virtualization Hosts
BZ#8334 25
On systems with AMD "Bulldozer" CPUs the number of CPU cores reported
always includes hyperthreads. This allows virtual machines run on the host
to use up to double the recommended number of virtual CPUs. Additionally
this issue may lead to biased scheduling favoring affected hosts over
others in the cluster if not all hosts have the same number and type of CPU.
2.3. Resolved Issues
These issues are now resolved in Red Hat Enterprise Virtualization 3.1:
BZ#84 234 4
In previous releases the Manager would attempt to boot virtual machines
using an attached disk, in accordance with the user's specified boot order,
even when no attached disk was marked as bootable. This behaviour has since
changed. Disks for booting virtual machines must be marked as bootable.
This includes disks created using the REST API and associated developer
tools.
BZ#84 7733
Previously, adding a host which was already attached to a VLAN tagged
network failed. The modifications made to the original configuration script
for the ethernet device caused it to lose connectivity. This issue has been
resolved, allowing the addition of a host that is already attached to a VLAN
tagged network.
BZ#790758
In previous releases the VDSM bootstrap process retrieved utility scripts
from the Manager using the HTTP protocol. This exposed virtualization hosts
being added to the environment to a potential man in the middle attack. In
Red Hat Enterprise Virtualization 3.1 the utility scripts are pushed to
hosts using the SSH protocol. This updated bootstrap process prevents man in
the middle attacks.
2.4. Security
20
Chapter 2. Technical Notes
Administrators can receive the latest security advisories from the Red Hat Enterprise Virtualization
watch list. Subscribe to the Red Hat Enterprise Virtualization watch list to receive new security
advisories for Red Hat Enterprise Virtualization products by email. Subscribe by completing this form:
http://www.redhat.com/mailman/listinfo/rhev-watch-list/.
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Red Hat Enterprise Virtualization 3.1 Manager Release Notes
Revision History
Revision 3.1.0-22.4 00 2013-10-31 Rüdiger Landmann
Rebuild with publican 4.0.0
Revision 3.1.0-22 Fri Jan 11 2013 Stephen Gordon
Updated upgrade information as a result of RHBA-2012:0003.
Revision 3.1.0-21 Mon Dec 3 2012 Stephen Gordon
Built from Content Specification: 10344, Revision: 334336 by sgordon
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