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| author | Johannes Stoelp <johannes.stoelp@gmail.com> | 2021-08-25 22:00:03 +0200 |
|---|---|---|
| committer | Johannes Stoelp <johannes.stoelp@gmail.com> | 2021-08-25 22:00:03 +0200 |
| commit | d8e2ee40bcf90318b1add0c06dc3eddc57edad9e (patch) | |
| tree | f8d00c5ff2880882c8eb06cfaba4f63c0d850072 | |
| parent | d086ca4c6179628546796e60bfade25be061f045 (diff) | |
| download | notes-d8e2ee40bcf90318b1add0c06dc3eddc57edad9e.tar.gz notes-d8e2ee40bcf90318b1add0c06dc3eddc57edad9e.zip | |
qemu: added snapshot notes
| -rw-r--r-- | src/tools/qemu.md | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/src/tools/qemu.md b/src/tools/qemu.md index e591cec..22e6e6d 100644 --- a/src/tools/qemu.md +++ b/src/tools/qemu.md @@ -188,6 +188,29 @@ lsblk -f /dev/sda -trace events=<events> ``` +## VM snapshots + +VM snapshots require that there is at least on `qcow2` disk attached to the VM +([VM Snapshots][qemu-doc-snapshot]). + +Commands for qemu [Monitor][qemu-doc-monitor] or [QMP][qemu-doc-qmp]: +```bash +# List available snapshots. +info snapshots + +# Create/Load/Delete snapshot with name <tag> +savevm <tag> +loadvm <tag> +delvm <tag> +``` + +The snapshot can also be directly specified when invoking qemu as: +```bash +qemu-system-x86_64 \ + -loadvm <tag> \ + ... +``` + ## Appendix: Direct `Kernel` boot Example command line to directly boot a `Kernel` with an `initrd` ramdisk. @@ -209,6 +232,9 @@ Instructions to build a minimal [`Kernel` and `initrd`][blog-qemu-dbg]. - [QEMU Tools][doc-qemu-tools] - [QEMU System][doc-qemu-system] - [QEMU Invocation (command line args)][doc-qemu-invocation] +- [QEMU Monitor][doc-qemu-monitor] +- [QEMU machine protocol (QMP)][doc-qemu-qmp] +- [QEMU VM Snapshots][doc-qemu-snapshot] [doc-qemu-usb]: https://github.com/qemu/qemu/blob/master/docs/usb2.txt @@ -216,4 +242,7 @@ Instructions to build a minimal [`Kernel` and `initrd`][blog-qemu-dbg]. [doc-qemu-tools]: https://qemu-project.gitlab.io/qemu/tools/index.html [doc-qemu-system]: https://qemu-project.gitlab.io/qemu/system/index.html [doc-qemu-invocation]: https://qemu-project.gitlab.io/qemu/system/invocation.html +[doc-qemu-monitor]: https://qemu-project.gitlab.io/qemu/system/monitor.html +[doc-qemu-qmp]: https://qemu-project.gitlab.io/qemu/interop/qemu-qmp-ref.html +[doc-qemu-snapshot]: https://qemu-project.gitlab.io/qemu/system/images.html#vm-005fsnapshots [blog-qemu-dbg]: https://blog.memzero.de/kernel-debugging-qemu |