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tape: improve media request/load

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This commit is contained in:
Dietmar Maurer
2020-12-30 12:58:06 +01:00
parent 2fb1bdda20
commit ff58c51919
4 changed files with 76 additions and 26 deletions
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86
src/tape/drive/mod.rs
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@ -19,6 +19,7 @@ use crate::{
VirtualTapeDrive,
LinuxTapeDrive,
},
server::WorkerTask,
tape::{
TapeWrite,
TapeRead,
@ -223,6 +224,7 @@ pub fn open_drive(
///
/// Returns a handle to the opened drive and the media labels.
pub fn request_and_load_media(
worker: &WorkerTask,
config: &SectionConfigData,
drive: &str,
label: &MediaLabel,
@ -231,51 +233,97 @@ pub fn request_and_load_media(
MediaId,
), Error> {
let check_label = |handle: &mut dyn TapeDriver, uuid: &proxmox::tools::Uuid| {
if let Ok(Some(media_id)) = handle.read_label() {
println!("found media label {} ({})", media_id.label.changer_id, media_id.label.uuid.to_string());
if media_id.label.uuid == *uuid {
return Ok(media_id);
}
}
bail!("read label failed (please label all tapes first)");
};
match config.sections.get(drive) {
Some((section_type_name, config)) => {
match section_type_name.as_ref() {
"virtual" => {
let mut drive = VirtualTapeDrive::deserialize(config)?;
let mut tape = VirtualTapeDrive::deserialize(config)?;
let changer_id = label.changer_id.clone();
drive.load_media(&changer_id)?;
tape.load_media(&changer_id)?;
let mut handle = drive.open()?;
let mut handle: Box<dyn TapeDriver> = Box::new(tape.open()?);
if let Ok(Some(media_id)) = handle.read_label() {
println!("found media label {} ({})", media_id.label.changer_id, media_id.label.uuid.to_string());
if media_id.label.uuid == label.uuid {
return Ok((Box::new(handle), media_id));
}
}
bail!("read label failed (label all tapes first)");
let media_id = check_label(handle.as_mut(), &label.uuid)?;
return Ok((handle, media_id));
}
"linux" => {
let tape = LinuxTapeDrive::deserialize(config)?;
let mut tape = LinuxTapeDrive::deserialize(config)?;
let id = label.changer_id.clone();
let changer_id = label.changer_id.clone();
println!("Please insert media '{}' into drive '{}'", id, drive);
if tape.changer.is_some() {
tape.load_media(&changer_id)?;
let mut handle: Box<dyn TapeDriver> = Box::new(tape.open()?);
let media_id = check_label(handle.as_mut(), &label.uuid)?;
return Ok((handle, media_id));
}
worker.log(format!("Please insert media '{}' into drive '{}'", changer_id, drive));
let to = "root@localhost"; // fixme
let mut changer = ChangeMediaEmail::new(drive, to);
changer.load_media(&changer_id)?; // semd email
let mut last_media_uuid = None;
loop {
let mut handle = match tape.open() {
Ok(handle) => handle,
Err(_) => {
eprintln!("tape open failed - test again in 5 secs");
//eprintln!("tape open failed - test again in 5 secs");
std::thread::sleep(std::time::Duration::from_millis(5_000));
continue;
}
};
if let Ok(Some(media_id)) = handle.read_label() {
println!("found media label {} ({})", media_id.label.changer_id, media_id.label.uuid.to_string());
if media_id.label.uuid == label.uuid {
return Ok((Box::new(handle), media_id));
match handle.read_label() {
Ok(Some(media_id)) => {
if media_id.label.uuid == label.uuid {
worker.log(format!(
"found media label {} ({})",
media_id.label.changer_id,
media_id.label.uuid.to_string(),
));
return Ok((Box::new(handle), media_id));
} else {
if Some(media_id.label.uuid.clone()) != last_media_uuid {
worker.log(format!(
"wrong media label {} ({})",
media_id.label.changer_id,
media_id.label.uuid.to_string(),
));
last_media_uuid = Some(media_id.label.uuid);
}
}
}
Ok(None) => {
if last_media_uuid.is_some() {
worker.log(format!("found empty media without label (please label all tapes first)"));
last_media_uuid = None;
}
}
Err(_) => { /* test again */ }
}
println!("read label failed - test again in 5 secs");
// eprintln!("read label failed - test again in 5 secs");
std::thread::sleep(std::time::Duration::from_millis(5_000));
}
}