4a402f74e1
The change was inspired by the live-migrate scripts for SYSTEM_DS with `shared` TM_MAD
After some rework I've figured out that it could be made as some sort of generic one.
The proposed changes
* tm_common.sh - new function migrate_other() receiving all arguments from the caller script
The function parses the TEMPLATE blob and exposes BASH arrays:
DISK_ID_ARRAY - array of all VM DISK_ID
TM_MAD_ARRAY - array of TM_MADs for each DISK_ID
CLONE_ARRAY - aray of all CLONE values for each DISK_ID
The function exposes DISK_ID of the CONTEXT disk too as CONTEXT_DISK_ID
The function check for extra argument to prevent recursion loops
For each TM_MAD it it is not current one the corresponding script is called
with same arguments but one additional - to mark that it is called not from
in the SYSTEM_DS context
Usage:
migrate_common "$@"
The function is appended to the following TM_MADs:
ceph
fs_lvm
qcow2
shared
ssh
The General idea is to allow live-migration of VMs with mix of disks with any of the above TM_MADs (different datastores)
For example if we have VM with the following disks
disk.0 ceph
disk.1 ceph (context)
disk.2 - ceph
disk.3 - fs_lvm
disk.4 - qcow2
In the above scenario when live migration is issed the following scripts will be called
ceph/premigrate <args>
fs_lvm/premigrate <args> "ceph"
qcow2/premigrate <args> "ceph"
As most probably I am missing someting I am open for discussion :)
OpenNebula
Description
OpenNebula is an open-source project delivering a simple but feature-rich and flexible solution to build and manage enterprise clouds and virtualized data centers.
Complete documentation: http://opennebula.org/documentation:documentation
How to contribute: http://opennebula.org/community:contribute
Installation
Requirements
This machine will act as the OpenNebula server and therefore needs to have installed the following software:
- ruby >= 1.8.5
- sqlite3 >= 3.5.2
- xmlrpc-c >= 1.06
- openssl >= 0.9
- ssh
- sqlite3-ruby gem
Additionally, to build OpenNebula from source you need:
- Development versions of the sqlite3, xmlrpc-c and openssl packages, if your distribution does not install them with the libraries.
- scons >= 0.97
- g++ >= 4
- flex >= 2.5 (optional, only needed to rebuild the parsers)
- bison >= 2.3 (optional, only needed to rebuild the parsers)
- libxml2-dev
Ruby Libraries Requirements
A set of gem requirements are needed to make several components work. We
include a handy script to install them and the requirements. It is located at
share/install_gems/install_gems and you should use it to install the
required gems. You have more information at:
http://opennebula.org/documentation:documentation:compile
If you want to install them manually here are the list of required rubygems:
-
OpenNebula and clients (plus cloud interfaces)
- sqlite3
- json
- sequel
- mysql
- net-ldap
- amazon-ec2
- rack
- sinatra
- thin
- uuidtools
- curb
- nokogiri
-
OpenNebula zones (client and server)
- json
- sequel
- sqlite3
- mysql
- nokogiri
-
Sunstone server
- json
- rack
- sinatra
- thin
- sequel
- nokogiri
Optional Packages
These packages are not needed to run or build OpenNebula. They improve the performance of the user-land libraries and tools of OpenNebula, nor the core system. You will probably experiment a more responsive CLI.
First install rubygems and ruby development libraries
- ruby-dev
- rubygems
- rake
- make
Then install the following packages:
-
ruby xmlparser, some distributions include a binary package for this (libxml-parser-ruby1.8). If it is not available in your distribution install expat libraries with its development files and install xmlparser using gem:
$ sudo gem install xmlparser --no-ri --no-rdoc
Note the extra parameters to gem install. Some versions of xmlparser have problems building the documentation and we can use it without documentation installed.
-
ruby nokogiri, to install this gem you will need libxml2 and libxslt libraries and their development versions. The we can install nokogiri library:
$ sudo gem install nokogiri --no-ri --no-rdoc
Building
Compilation is done using scons command:
$ scons [OPTION=VALUE]
The argument expression [OPTIONAL] is used to set non-default values for:
OPTION VALUE
sqlite_db path-to-sqlite-install
sqlite no if you don't want to build sqlite support
mysql yes if you want to build mysql support
xmlrpc path-to-xmlrpc-install
parsers yes if you want to rebuild flex/bison files
Installation
OpenNebula can be installed in two modes: system-wide, or in self-contained directory. In either case, you do not need to run OpenNebula as root. These options can be specified when running the install script:
$ ./install.sh install_options
where install_options can be one or more of:
OPTION VALUE
-u user that will run OpenNebula, defaults to user executing
install.sh
-g group of the user that will run OpenNebula, defaults to user
executing install.sh
-k keep current configuration files, useful when upgrading
-d target installation directory. If defined, it will specified
the path for the self-contained install. If not defined, the
installation will be performed system wide
-c only install client utilities: OpenNebula cli, occi and ec2
client files
-r remove Opennebula, only useful if -d was not specified,
otherwise rm -rf $ONE_LOCATION would do the job
-h prints installer help
Configuration
Information on how to configure OpenNebula is located at http://opennebula.org/documentation:documentation:cg
Contact
OpenNebula web page: http://opennebula.org
Development and issue tracking: http://dev.opennebula.org
Support: http://opennebula.org/support:support
License
Copyright 2002-2016, OpenNebula Project, OpenNebula Systems (formerly C12G Labs)
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.