MigrationQemu0.8.2: Difference between revisions
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=== Example/ HOWTO: === | === Example/ HOWTO: === | ||
A is the source host, B is the destination host: | A is the source host, B is the destination host: | ||
1. Start the VM on B with the exact same parameters as the VM on A, in stopped mode (-S) | |||
1. Start the VM on B with the exact same parameters as the VM on A, in stopped mode (-S) | |||
2. Establish Connection (either A or B can listen/connect): | 2. Establish Connection (either A or B can listen/connect): | ||
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* Finish Interface implementation. | * Finish Interface implementation. | ||
* Migration does not work while CPU real-mode/protected mode are still changing. | * Migration does not work while CPU real-mode/protected mode are still changing. | ||
__NOTOC__ | |||
Latest revision as of 07:47, 4 February 2009
KVM: migrating a VM on Qemu-0.8.2
Interface:
- Connection Establishment
migration listen [local_host:port [remote_host:port]] -- listen on a port migration connect [local_host:port [remote_host:port]] -- connect to a port migration getfd fd (socket) -- get established connection (not implemented yet)
- Management
migration start online/offline migration cancel
Once started, offline migration can not be canceled.
- Status
migration status
- Migration Parameters (not implemented yet)
migration set rate min max offline -- set bandwidth control parameters (min, max, offline) migration set total_time seconds -- set migration total_time (seconds) migration show -- show migration parameters
- Help
migration help
Example/ HOWTO:
A is the source host, B is the destination host:
1. Start the VM on B with the exact same parameters as the VM on A, in stopped mode (-S)
2. Establish Connection (either A or B can listen/connect):
B: migration listen BIP:port [AIP:port] (e.g. migration listen 0:4444) A: migration connect AIP:port BIP:port (e.g. migration connect 0:4445 192.168.1.15:4444)
3. Start the migration (always on the source host):
A: migration start offline
4. Check the status (on either host):
migration status
Problems/Todo:
- handle migration completion better (especially when network problems occur).
- Online Migration.
- Finish Interface implementation.
- Migration does not work while CPU real-mode/protected mode are still changing.