api2/tape/{backup, restore}, proxmox-tape: set device state

set the drive device state everywhere we lock it, so that we
know what it currently does

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>

src/api2/tape/backup.rs

@@ -54,6 +54,7 @@ use crate::{
         drive::{
             media_changer,
             lock_tape_device,
+            set_tape_device_state,
         },
         changer::update_changer_online_status,
     },
@@ -139,6 +140,7 @@ pub fn do_tape_backup_job(
         move |worker| {
             let _drive_lock = drive_lock; // keep lock guard
 
+            set_tape_device_state(&tape_job.drive, &worker.upid().to_string())?;
             job.start(&worker.upid().to_string())?;
 
             let eject_media = false;
@@ -168,6 +170,14 @@ pub fn do_tape_backup_job(
                 );
             }
 
+            if let Err(err) = set_tape_device_state(&tape_job.drive, "") {
+                eprintln!(
+                    "could not unset drive state for {}: {}",
+                    tape_job.drive,
+                    err
+                );
+            }
+
             job_result
         }
     )?;
@@ -265,7 +275,10 @@ pub fn backup(
         to_stdout,
         move |worker| {
             let _drive_lock = drive_lock; // keep lock guard
+            set_tape_device_state(&drive, &worker.upid().to_string())?;
             backup_worker(&worker, datastore, &drive, &pool_config, eject_media, export_media_set)?;
+            // ignore errors
+            let _ = set_tape_device_state(&drive, "");
             Ok(())
         }
     )?;

src/api2/tape/restore.rs

@@ -69,6 +69,7 @@ use crate::{
             TapeDriver,
             request_and_load_media,
             lock_tape_device,
+            set_tape_device_state,
         },
     },
 };
@@ -134,6 +135,8 @@ pub fn restore(
         move |worker| {
             let _drive_lock = drive_lock; // keep lock guard
 
+            set_tape_device_state(&drive, &worker.upid().to_string())?;
+
             let _lock = MediaPool::lock(status_path, &pool)?;
 
             let members = inventory.compute_media_set_members(&media_set_uuid)?;
@@ -189,6 +192,16 @@ pub fn restore(
             }
 
             task_log!(worker, "Restore mediaset '{}' done", media_set);
+
+            if let Err(err) = set_tape_device_state(&drive, "") {
+                task_log!(
+                    worker,
+                    "could not unset drive state for {}: {}",
+                    drive,
+                    err
+                );
+            }
+
             Ok(())
         }
     )?;

src/bin/proxmox-tape.rs

@@ -43,6 +43,7 @@ use proxmox_backup::{
         drive::{
             open_drive,
             lock_tape_device,
+            set_tape_device_state,
         },
         complete_media_label_text,
         complete_media_set_uuid,
@@ -543,6 +544,7 @@ fn move_to_eom(mut param: Value) -> Result<(), Error> {
     let drive = extract_drive_name(&mut param, &config)?;
 
     let _lock = lock_tape_device(&config, &drive)?;
+    set_tape_device_state(&drive, "moving to eom")?;
 
     let mut drive = open_drive(&config, &drive)?;
 
@@ -572,6 +574,7 @@ fn debug_scan(mut param: Value) -> Result<(), Error> {
     let drive = extract_drive_name(&mut param, &config)?;
 
     let _lock = lock_tape_device(&config, &drive)?;
+    set_tape_device_state(&drive, "debug scan")?;
 
     let mut drive = open_drive(&config, &drive)?;