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Diffstat (limited to 'src/tools/qemu.md')
| -rw-r--r-- | src/tools/qemu.md | 33 |
1 files changed, 32 insertions, 1 deletions
diff --git a/src/tools/qemu.md b/src/tools/qemu.md index c34c533..93a724f 100644 --- a/src/tools/qemu.md +++ b/src/tools/qemu.md @@ -198,7 +198,7 @@ Commands for qemu [Monitor][doc-qemu-monitor] or [QMP][doc-qemu-qmp]: # List available snapshots. info snapshots -# Create/Load/Delete snapshot with name <tag> +# Create/Load/Delete snapshot with name <tag>. savevm <tag> loadvm <tag> delvm <tag> @@ -211,6 +211,37 @@ qemu-system-x86_64 \ ... ``` +## VM Migration + +`Online` migration example: +```bash +# Start machine 1 on host ABC. +qemu-system-x86_64 -monitor stdio -cdrom <iso> + +# Prepare machine 2 on host DEF as migration target. +# Listen for any connection on port 12345. +qemu-system-x86_64 -monitor stdio -incoming tcp:0.0.0.0:12345 + +# Start migration from the machine 1 monitor console. +(qemu) migrate tcp:DEF:12345 +``` + +Save to external file example: +```bash +```bash +# Start machine 1. +qemu-system-x86_64 -monitor stdio -cdrom <iso> + +# Save VM state to file. +(qemu) migrate "exec:gzip -c > vm.gz" + +# Load VM from file. +qemu-system-x86_64 -monitor stdio -incoming "exec: gzip -d -c vm.gz" +``` + +> The migration source machine and the migration target machine should be +> launched with the **same** parameters. + ## Appendix: Direct `Kernel` boot Example command line to directly boot a `Kernel` with an `initrd` ramdisk. |