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file-restore: add basic VM/block device support

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Includes methods to start, stop and list QEMU file-restore VMs, as well
as CLI commands do the latter two (start is implicit).

The implementation is abstracted behind the concept of a
"BlockRestoreDriver", so other methods can be implemented later (e.g.
mapping directly to loop devices on the host, using other hypervisors
then QEMU, etc...).

Starting VMs is currently unused but will be needed for further changes.

The design for the QEMU driver uses a locked 'map' file
(/run/proxmox-backup/$UID/restore-vm-map.json) containing a JSON
encoding of currently running VMs. VMs are addressed by a 'name', which
is a systemd-unit encoded combination of repository and snapshot string,
thus uniquely identifying it.

Note that currently you need to run proxmox-file-restore as root to use
this method of restoring.

Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
This commit is contained in:
Stefan Reiter
2021-04-01 17:43:52 +02:00
committed by Thomas Lamprecht
parent a5bdc987dc
commit 58421ec112
7 changed files with 761 additions and 1 deletions
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12
src/bin/proxmox-file-restore.rs
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@ -35,6 +35,9 @@ use proxmox_client_tools::{
REPO_URL_SCHEMA,
};
mod proxmox_file_restore;
use proxmox_file_restore::*;
enum ExtractPath {
ListArchives,
Pxar(String, Vec<u8>),
@ -369,9 +372,16 @@ fn main() {
.completion_cb("snapshot", complete_group_or_snapshot)
.completion_cb("target", tools::complete_file_name);
let status_cmd_def = CliCommand::new(&API_METHOD_STATUS);
let stop_cmd_def = CliCommand::new(&API_METHOD_STOP)
.arg_param(&["name"])
.completion_cb("name", complete_block_driver_ids);
let cmd_def = CliCommandMap::new()
.insert("list", list_cmd_def)
.insert("extract", restore_cmd_def);
.insert("extract", restore_cmd_def)
.insert("status", status_cmd_def)
.insert("stop", stop_cmd_def);
let rpcenv = CliEnvironment::new();
run_cli_command(