btrfs_cli/replace/
cancel.rs

1use crate::{Format, Runnable, util::open_path};
2use anyhow::{Context, Result};
3use btrfs_uapi::replace::replace_cancel;
4use clap::Parser;
5use std::{os::unix::io::AsFd, path::PathBuf};
6
7/// Cancel a running device replace operation.
8///
9/// If a replace operation is in progress on the filesystem mounted at
10/// mount_point, it is cancelled. The target device is left in an undefined
11/// state and should not be used further without reformatting.
12#[derive(Parser, Debug)]
13pub struct ReplaceCancelCommand {
14    /// Path to the mounted btrfs filesystem
15    pub mount_point: PathBuf,
16}
17
18impl Runnable for ReplaceCancelCommand {
19    fn run(&self, _format: Format, _dry_run: bool) -> Result<()> {
20        let file = open_path(&self.mount_point)?;
21
22        let was_running = replace_cancel(file.as_fd()).with_context(|| {
23            format!(
24                "failed to cancel replace on '{}'",
25                self.mount_point.display()
26            )
27        })?;
28
29        if was_running {
30            println!("replace cancelled on '{}'", self.mount_point.display());
31        } else {
32            println!("no replace operation was in progress");
33        }
34
35        Ok(())
36    }
37}
btrfs_cli/replace/cancel.rs

btrfs_cli/replace/
cancel.rs
