Method try_lock_disks

vmm/src/device_manager.rs:2597–2604

Tries to acquire advisory locks for all disk images. This should only be called when a VM boots or VM state is restored. For live-migration, the locks must be released on the destination side before they are acquired again by the receiving side.

(&self)

    /// For live-migration, the locks must be released on the destination side
    /// before they are acquired again by the receiving side.
    pub fn try_lock_disks(&self) -> DeviceManagerResult<()> {
        for dev in &self.block_devices {
            let mut dev = dev.lock().unwrap();
            dev.try_lock_image()
                .map_err(DeviceManagerError::DiskLockError)?;
        }
        Ok(())
    }

    /// Release all advisory locks held for the disk images.
    ///