INNER CODE UNIT · Rust

setup_scsi_debug_device

openebs/mayastor · io-engine-tests/src/lib.rs:234

pub fn setup_scsi_debug_device(dev_size_mb: u32) -> String {
    let output = Command::new("sudo")
        .args([
            "modprobe",
            "scsi_debug",
            &format!("dev_size_mb={dev_size_mb}"),
        ])
        .output()
        .expect("failed exec modprobe scsi_debug");
    assert!(output.status.success(), "{:#?}", output);

    // Identify the /dev/sdX node scsi_debug just created by its fixed model
    // string, rather than by name -- the name depends on what else is
    // already attached. Poll briefly: the block device can appear a few
    // milliseconds after modprobe returns.
    for _ in 0..50 {
        let output = Command::new("lsblk")
            .args(["-d", "-n", "-o", "NAME,MODEL"])

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