virtfusion-live-migrate

Prerequisites

• jq: The script utilizes jq for JSON processing.
• VirtFusion CLI: The VirtFusion CLI tool vfcli-ctrl should be available. Please note this script should only be run on a VirtFusion master server.

Required Parameters

If migrating a single VM, or multiple specific VMs with or without concurrency:

• DST_ID SERVER_ID(s): This will set the destination hypervisor ID, and the IDs of the server(s) you are migrating.

If draining a hypervisor, with or without concurrency.

• SRC_ID DST_ID: This will set the source hypervisor ID you are migrating from, to the destination hypervisor you are migrating to.

Options

• -c <number>: Sets migration concurrency. This will determine how many VMs will be migrated at a time.
• -o: Allows migration of offline VMs.
• -s <speed in Mbps>: Set transfer speed limit in Mbps. This is per VM, meaning if you use concurrency of 2, you would use 80Mbps.
• --drain-hv: Migrate all VMs from SRC_ID.

Examples

• ./migrate.sh SRC_ID DST_ID --drain-hv -c 5 -o -s 80: Migrate all VMs from SRC_ID to DST_ID, 5 at a time, using offline migration with a speed limit of 80Mbps.
• ./migrate.sh DST_ID SERVER_ID: Migrate a single VM (SERVER_ID) to DST_ID without any concurrency.
• ./migrate.sh DST_ID SERVER_ID(s) -o: Migrate specific VMs to DST_ID, and if a VM is offline at the time of running, it'll migrate offline.
• ./migrate.sh DST_ID SERVER_ID(s) -s 40: Migrate specific VMs to DST_ID at a limited speed of 40 Mbps per VM migrated.
• ./migrate.sh DST_ID SERVER_ID(s) -c 5: Migrate specific VMs to DST_ID with concurrency, meaning 5 VMs will migrate simultaneously.

SERVER_ID(s) would be formatted like this: ./migrate.sh DST_ID VMID1 VMID2 VMID3.

Handling Migration Failures

In the event of a migration failure, the script will:

• Display an error message indicating which VM (by ID) encountered an issue and present the error message.
• Attempt to cancel the ongoing migration after a 3-second delay.
• Terminate further execution, preventing additional migrations from initiating.

SIGINT Trap

If you wish to cancel any further migrations past what is currently running, you can use CTRL+C which will stop the script from running any new migrations when the existing one has concluded.

Disclaimer

Please ensure to test the script in a non-production environment. I am not responsible for any potential data loss or disruptions caused directly or indirectly by the usage of the script.