tape: return media usage info with status command

src/api2/tape/drive.rs

@@ -35,7 +35,7 @@ use crate::{
         MediaIdFlat,
         LabelUuidMap,
         MamAttribute,
-        LinuxDriveStatusFlat,
+        LinuxDriveAndMediaStatus,
     },
     server::WorkerTask,
     tape::{
@@ -51,6 +51,7 @@ use crate::{
         open_drive,
         media_changer,
         update_changer_online_status,
+        mam_extract_media_usage,
         file_formats::{
             MediaLabel,
             MediaSetLabel,
@@ -807,22 +808,37 @@ pub fn cartridge_memory(drive: String) -> Result<Vec<MamAttribute>, Error> {
         },
     },
     returns: {
-        type: LinuxDriveStatusFlat,
+        type: LinuxDriveAndMediaStatus,
     },
 )]
-/// Get drive status
+/// Get drive/media status
-pub fn status(drive: String) -> Result<LinuxDriveStatusFlat, Error> {
+pub fn status(drive: String) -> Result<LinuxDriveAndMediaStatus, Error> {
 
     let (config, _digest) = config::drive::config()?;
 
     let drive_config: LinuxTapeDrive = config.lookup("linux", &drive)?;
 
-    let handle = drive_config.open()
+    let mut handle = drive_config.open()
         .map_err(|err| format_err!("open drive '{}' ({}) failed - {}", drive, drive_config.path, err))?;
 
     let drive_status = handle.get_drive_status()?;
 
-    Ok(drive_status.into())
+    let mam = handle.cartridge_memory()?;
+
+    let usage = mam_extract_media_usage(&mam)?;
+
+    let status = LinuxDriveAndMediaStatus {
+        blocksize: drive_status.blocksize,
+        density: drive_status.density,
+        status: format!("{:?}", drive_status.status),
+        file_number: drive_status.file_number,
+        block_number: drive_status.block_number,
+        manufactured: usage.manufactured,
+        bytes_read: usage.bytes_read,
+        bytes_written: usage.bytes_written,
+    };
+
+    Ok(status)
 }
 
 #[sortable]

src/api2/types/tape/drive.rs

@@ -166,8 +166,8 @@ impl TryFrom<u8> for TapeDensity {
 )]
 #[derive(Serialize,Deserialize)]
 #[serde(rename_all = "kebab-case")]
-/// Drive status for Linux SCSI drives.
+/// Drive/Media status for Linux SCSI drives.
-pub struct LinuxDriveStatusFlat {
+pub struct LinuxDriveAndMediaStatus {
     /// Block size (0 is variable size)
     pub blocksize: u32,
     /// Tape density
@@ -178,4 +178,10 @@ pub struct LinuxDriveStatusFlat {
     pub file_number: i32,
     /// Current block number
     pub block_number: i32,
+    /// Medium Manufacture Date (epoch)
+    pub manufactured: i64,
+    /// Total Bytes Read in Medium Life
+    pub bytes_read: u64,
+    /// Total Bytes Written in Medium Life
+    pub bytes_written: u64,
 }

src/bin/proxmox-tape.rs

@@ -19,6 +19,7 @@ use proxmox_backup::{
     tools::format::{
         HumanByte,
         render_epoch,
+        render_bytes_human_readable,
     },
     server::{
         UPID,
@@ -568,7 +569,7 @@ fn cartridge_memory(
         },
     },
 )]
-/// Get drive status
+/// Get drive/media status
 fn status(
     mut param: Value,
     rpcenv: &mut dyn RpcEnvironment,
@@ -592,6 +593,9 @@ fn status(
         .column(ColumnConfig::new("status"))
         .column(ColumnConfig::new("file-number"))
         .column(ColumnConfig::new("block-number"))
+        .column(ColumnConfig::new("manufactured").renderer(render_epoch))
+        .column(ColumnConfig::new("bytes-written").renderer(render_bytes_human_readable))
+        .column(ColumnConfig::new("bytes-read").renderer(render_bytes_human_readable))
         ;
 
     format_and_print_result_full(&mut data, &info.returns, &output_format, &options);

src/tape/drive/linux_tape.rs

@@ -11,7 +11,6 @@ use proxmox::sys::error::SysResult;
 use crate::{
     api2::types::{
         TapeDensity,
-        LinuxDriveStatusFlat,
         MamAttribute,
     },
     tape::{
@@ -52,18 +51,6 @@ impl LinuxDriveStatus {
     }
 }
 
-impl From<LinuxDriveStatus> for LinuxDriveStatusFlat {
-    fn from(status: LinuxDriveStatus) -> Self {
-         LinuxDriveStatusFlat {
-             blocksize: status.blocksize,
-             density: status.density,
-             status: format!("{:?}", status.status),
-             file_number: status.file_number,
-             block_number: status.block_number,
-         }
-    }
-}
-
 impl LinuxTapeDrive {
 
     /// This needs to lock the drive

src/tape/drive/mam.rs

@@ -178,3 +178,46 @@ fn decode_mam_attributes(data: &[u8]) -> Result<Vec<MamAttribute>, Error> {
     }
     Ok(list)
 }
+
+/// Media Usage Information from Cartridge Memory
+pub struct MediaUsageInfo {
+    pub manufactured: i64,
+    pub bytes_read: u64,
+    pub bytes_written: u64,
+}
+
+/// Extract Media Usage Information from Cartridge Memory
+pub fn mam_extract_media_usage(mam: &[MamAttribute]) -> Result<MediaUsageInfo, Error> {
+
+   let manufactured: i64 = match mam.iter().find(|v| v.id == 0x04_06).map(|v| v.value.clone()) {
+        Some(date_str) => {
+            if date_str.len() != 8 {
+                bail!("unable to parse 'Medium Manufacture Date' - wrong length");
+            }
+            let year: i32 = date_str[..4].parse()?;
+            let mon: i32 = date_str[4..6].parse()?;
+            let mday: i32 = date_str[6..8].parse()?;
+
+            use proxmox::tools::time::TmEditor;
+            let mut t = TmEditor::new(true);
+            t.set_year(year)?;
+            t.set_mon(mon)?;
+            t.set_mday(mday)?;
+
+            t.into_epoch()?
+        }
+        None => bail!("unable to read MAM 'Medium Manufacture Date'"),
+    };
+
+    let bytes_written: u64 = match mam.iter().find(|v| v.id == 0x02_20).map(|v| v.value.clone()) {
+        Some(read_str) => read_str.parse::<u64>()? * 1024*1024,
+        None => bail!("unable to read MAM 'Total MBytes Written In Medium Life'"),
+    };
+
+    let bytes_read: u64 = match mam.iter().find(|v| v.id == 0x02_21).map(|v| v.value.clone()) {
+        Some(read_str) => read_str.parse::<u64>()? * 1024*1024,
+        None => bail!("unable to read MAM 'Total MBytes Read In Medium Life'"),
+    };
+
+    Ok(MediaUsageInfo { manufactured, bytes_written, bytes_read })
+}