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tape: remove MediumType struct, which is only valid on IBM drives

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HP drives do not return this information.

Note: This breaks format on WORM media, because we have not way
to detect WOREM media (how?).
This commit is contained in:
Dietmar Maurer
2021-04-27 09:32:07 +02:00
parent 4a0132382a
commit 73cef112eb
2 changed files with 24 additions and 56 deletions
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48
src/tape/drive/lto/sg_tape.rs
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@ -47,7 +47,6 @@ use crate::{
SenseInfo,
ScsiError,
InquiryInfo,
MediumType,
ModeParameterHeader,
ModeBlockDescriptor,
alloc_page_aligned_buffer,
@ -201,9 +200,10 @@ impl SgTape {
pub fn format_media(&mut self, fast: bool) -> Result<(), Error> {
// get info about loaded media first
let (head, _, _) = self.read_compression_page()?;
let (_head, block_descriptor, _) = self.read_compression_page()?;
if MediumType::is_worm(head.medium_type) {
/* todo: howto detect WORM media?
if MediumType::is_worm(xx) {
// We cannot FORMAT WORM media! Instead we check if its empty.
self.move_to_eom(false)?;
@ -212,28 +212,28 @@ impl SgTape {
bail!("format failed - detected WORM media with data.");
}
Ok(())
} else {
self.rewind()?;
let mut sg_raw = SgRaw::new(&mut self.file, 16)?;
sg_raw.set_timeout(Self::SCSI_TAPE_DEFAULT_TIMEOUT);
let mut cmd = Vec::new();
if MediumType::is_lto5_or_newer(head.medium_type) { // FORMAT requires LTO5 or newer)
cmd.extend(&[0x04, 0, 0, 0, 0, 0]);
sg_raw.do_command(&cmd)?;
if !fast {
self.erase_media(false)?; // overwrite everything
}
} else {
// try rewind/erase instead
self.erase_media(fast)?
}
Ok(())
return Ok(());
}
*/
self.rewind()?;
let mut sg_raw = SgRaw::new(&mut self.file, 16)?;
sg_raw.set_timeout(Self::SCSI_TAPE_DEFAULT_TIMEOUT);
let mut cmd = Vec::new();
if block_descriptor.density_code >= 0x58 { // FORMAT requires LTO5 or newer
cmd.extend(&[0x04, 0, 0, 0, 0, 0]); // FORMAT
sg_raw.do_command(&cmd)?;
if !fast {
self.erase_media(false)?; // overwrite everything
}
} else {
// try rewind/erase instead
self.erase_media(fast)?
}
Ok(())
}
/// Lock/Unlock drive door