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tape: implement LTO userspace driver

This commit is contained in:
Dietmar Maurer 2021-03-30 17:07:59 +02:00
parent 1336ae8249
commit a79082a0dd
17 changed files with 1078 additions and 531 deletions
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18
debian/proxmox-backup-server.udev vendored Normal file
View File

@ -0,0 +1,18 @@
# do not edit this file, it will be overwritten on update
# persistent storage links: /dev/tape/{by-id,by-path}
ACTION=="remove", GOTO="persistent_storage_tape_end"
ENV{UDEV_DISABLE_PERSISTENT_STORAGE_RULES_FLAG}=="1", GOTO="persistent_storage_tape_end"
# also see: /lib/udev/rules.d/60-persistent-storage-tape.rules
SUBSYSTEM=="scsi_generic", SUBSYSTEMS=="scsi", ATTRS{type}=="1", IMPORT{program}="scsi_id --sg-version=3 --export --whitelisted -d $devnode", \
SYMLINK+="tape/by-id/scsi-$env{ID_SERIAL}-sg"
# iSCSI devices from the same host have all the same ID_SERIAL,
# but additionally a property named ID_SCSI_SERIAL.
SUBSYSTEM=="scsi_generic", SUBSYSTEMS=="scsi", ATTRS{type}=="1", ENV{ID_SCSI_SERIAL}=="?*", \
SYMLINK+="tape/by-id/scsi-$env{ID_SCSI_SERIAL}-sg"
LABEL="persistent_storage_tape_end"

4
src/api2/config/changer.rs
View File

@ -27,7 +27,7 @@ use crate::{
SLOT_ARRAY_SCHEMA,
EXPORT_SLOT_LIST_SCHEMA,
ScsiTapeChanger,
LinuxTapeDrive,
LtoTapeDrive,
},
tape::{
linux_tape_changer_list,
@ -303,7 +303,7 @@ pub fn delete_changer(name: String, _param: Value) -> Result<(), Error> {
None => bail!("Delete changer '{}' failed - no such entry", name),
}
let drive_list: Vec<LinuxTapeDrive> = config.convert_to_typed_array("linux")?;
let drive_list: Vec<LtoTapeDrive> = config.convert_to_typed_array("lto")?;
for drive in drive_list {
if let Some(changer) = drive.changer {
if changer == name {

44
src/api2/config/drive.rs
View File

@ -19,12 +19,12 @@ use crate::{
DRIVE_NAME_SCHEMA,
CHANGER_NAME_SCHEMA,
CHANGER_DRIVENUM_SCHEMA,
LINUX_DRIVE_PATH_SCHEMA,
LinuxTapeDrive,
LTO_DRIVE_PATH_SCHEMA,
LtoTapeDrive,
ScsiTapeChanger,
},
tape::{
linux_tape_device_list,
lto_tape_device_list,
check_drive_path,
},
};
@ -37,7 +37,7 @@ use crate::{
schema: DRIVE_NAME_SCHEMA,
},
path: {
schema: LINUX_DRIVE_PATH_SCHEMA,
schema: LTO_DRIVE_PATH_SCHEMA,
},
changer: {
schema: CHANGER_NAME_SCHEMA,
@ -60,13 +60,13 @@ pub fn create_drive(param: Value) -> Result<(), Error> {
let (mut config, _digest) = config::drive::config()?;
let item: LinuxTapeDrive = serde_json::from_value(param)?;
let item: LtoTapeDrive = serde_json::from_value(param)?;
let linux_drives = linux_tape_device_list();
let lto_drives = lto_tape_device_list();
check_drive_path(&linux_drives, &item.path)?;
check_drive_path(&lto_drives, &item.path)?;
let existing: Vec<LinuxTapeDrive> = config.convert_to_typed_array("linux")?;
let existing: Vec<LtoTapeDrive> = config.convert_to_typed_array("lto")?;
for drive in existing {
if drive.name == item.name {
@ -77,7 +77,7 @@ pub fn create_drive(param: Value) -> Result<(), Error> {
}
}
config.set_data(&item.name, "linux", &item)?;
config.set_data(&item.name, "lto", &item)?;
config::drive::save_config(&config)?;
@ -93,7 +93,7 @@ pub fn create_drive(param: Value) -> Result<(), Error> {
},
},
returns: {
type: LinuxTapeDrive,
type: LtoTapeDrive,
},
access: {
permission: &Permission::Privilege(&["tape", "device", "{name}"], PRIV_TAPE_AUDIT, false),
@ -104,11 +104,11 @@ pub fn get_config(
name: String,
_param: Value,
mut rpcenv: &mut dyn RpcEnvironment,
) -> Result<LinuxTapeDrive, Error> {
) -> Result<LtoTapeDrive, Error> {
let (config, digest) = config::drive::config()?;
let data: LinuxTapeDrive = config.lookup("linux", &name)?;
let data: LtoTapeDrive = config.lookup("lto", &name)?;
rpcenv["digest"] = proxmox::tools::digest_to_hex(&digest).into();
@ -123,7 +123,7 @@ pub fn get_config(
description: "The list of configured drives (with config digest).",
type: Array,
items: {
type: LinuxTapeDrive,
type: LtoTapeDrive,
},
},
access: {
@ -135,13 +135,13 @@ pub fn get_config(
pub fn list_drives(
_param: Value,
mut rpcenv: &mut dyn RpcEnvironment,
) -> Result<Vec<LinuxTapeDrive>, Error> {
) -> Result<Vec<LtoTapeDrive>, Error> {
let auth_id: Authid = rpcenv.get_auth_id().unwrap().parse()?;
let user_info = CachedUserInfo::new()?;
let (config, digest) = config::drive::config()?;
let drive_list: Vec<LinuxTapeDrive> = config.convert_to_typed_array("linux")?;
let drive_list: Vec<LtoTapeDrive> = config.convert_to_typed_array("lto")?;
let drive_list = drive_list
.into_iter()
@ -176,7 +176,7 @@ pub enum DeletableProperty {
schema: DRIVE_NAME_SCHEMA,
},
path: {
schema: LINUX_DRIVE_PATH_SCHEMA,
schema: LTO_DRIVE_PATH_SCHEMA,
optional: true,
},
changer: {
@ -225,7 +225,7 @@ pub fn update_drive(
crate::tools::detect_modified_configuration_file(&digest, &expected_digest)?;
}
let mut data: LinuxTapeDrive = config.lookup("linux", &name)?;
let mut data: LtoTapeDrive = config.lookup("lto", &name)?;
if let Some(delete) = delete {
for delete_prop in delete {
@ -240,8 +240,8 @@ pub fn update_drive(
}
if let Some(path) = path {
let linux_drives = linux_tape_device_list();
check_drive_path(&linux_drives, &path)?;
let lto_drives = lto_tape_device_list();
check_drive_path(&lto_drives, &path)?;
data.path = path;
}
@ -261,7 +261,7 @@ pub fn update_drive(
}
}
config.set_data(&name, "linux", &data)?;
config.set_data(&name, "lto", &data)?;
config::drive::save_config(&config)?;
@ -290,8 +290,8 @@ pub fn delete_drive(name: String, _param: Value) -> Result<(), Error> {
match config.sections.get(&name) {
Some((section_type, _)) => {
if section_type != "linux" {
bail!("Entry '{}' exists, but is not a linux tape drive", name);
if section_type != "lto" {
bail!("Entry '{}' exists, but is not a lto tape drive", name);
}
config.sections.remove(&name);
},

4
src/api2/tape/changer.rs
View File

@ -20,7 +20,7 @@ use crate::{
Authid,
CHANGER_NAME_SCHEMA,
ChangerListEntry,
LinuxTapeDrive,
LtoTapeDrive,
MtxEntryKind,
MtxStatusEntry,
ScsiTapeChanger,
@ -88,7 +88,7 @@ pub async fn get_status(
inventory.update_online_status(&map)?;
let drive_list: Vec<LinuxTapeDrive> = config.convert_to_typed_array("linux")?;
let drive_list: Vec<LtoTapeDrive> = config.convert_to_typed_array("lto")?;
let mut drive_map: HashMap<u64, String> = HashMap::new();
for drive in drive_list {

36
src/api2/tape/drive.rs
View File

@ -42,11 +42,11 @@ use crate::{
MEDIA_POOL_NAME_SCHEMA,
Authid,
DriveListEntry,
LinuxTapeDrive,
LtoTapeDrive,
MediaIdFlat,
LabelUuidMap,
MamAttribute,
LinuxDriveAndMediaStatus,
LtoDriveAndMediaStatus,
},
tape::restore::{
fast_catalog_restore,
@ -62,7 +62,7 @@ use crate::{
lock_media_set,
lock_media_pool,
lock_unassigned_media_pool,
linux_tape_device_list,
lto_tape_device_list,
lookup_device_identification,
file_formats::{
MediaLabel,
@ -70,9 +70,9 @@ use crate::{
},
drive::{
TapeDriver,
LinuxTapeHandle,
LtoTapeHandle,
Lp17VolumeStatistics,
open_linux_tape_device,
open_lto_tape_device,
media_changer,
required_media_changer,
open_drive,
@ -794,9 +794,9 @@ pub fn clean_drive(
changer.clean_drive()?;
if let Ok(drive_config) = config.lookup::<LinuxTapeDrive>("linux", &drive) {
if let Ok(drive_config) = config.lookup::<LtoTapeDrive>("lto", &drive) {
// Note: clean_drive unloads the cleaning media, so we cannot use drive_config.open
let mut handle = LinuxTapeHandle::new(open_linux_tape_device(&drive_config.path)?);
let mut handle = LtoTapeHandle::new(open_lto_tape_device(&drive_config.path)?)?;
// test for critical tape alert flags
if let Ok(alert_flags) = handle.tape_alert_flags() {
@ -1144,7 +1144,7 @@ pub async fn cartridge_memory(drive: String) -> Result<Vec<MamAttribute>, Error>
drive.clone(),
"reading cartridge memory".to_string(),
move |config| {
let drive_config: LinuxTapeDrive = config.lookup("linux", &drive)?;
let drive_config: LtoTapeDrive = config.lookup("lto", &drive)?;
let mut handle = drive_config.open()?;
handle.cartridge_memory()
@ -1174,7 +1174,7 @@ pub async fn volume_statistics(drive: String) -> Result<Lp17VolumeStatistics, Er
drive.clone(),
"reading volume statistics".to_string(),
move |config| {
let drive_config: LinuxTapeDrive = config.lookup("linux", &drive)?;
let drive_config: LtoTapeDrive = config.lookup("lto", &drive)?;
let mut handle = drive_config.open()?;
handle.volume_statistics()
@ -1192,24 +1192,24 @@ pub async fn volume_statistics(drive: String) -> Result<Lp17VolumeStatistics, Er
},
},
returns: {
type: LinuxDriveAndMediaStatus,
type: LtoDriveAndMediaStatus,
},
access: {
permission: &Permission::Privilege(&["tape", "device", "{drive}"], PRIV_TAPE_AUDIT, false),
},
)]
/// Get drive/media status
pub async fn status(drive: String) -> Result<LinuxDriveAndMediaStatus, Error> {
pub async fn status(drive: String) -> Result<LtoDriveAndMediaStatus, Error> {
run_drive_blocking_task(
drive.clone(),
"reading drive status".to_string(),
move |config| {
let drive_config: LinuxTapeDrive = config.lookup("linux", &drive)?;
let drive_config: LtoTapeDrive = config.lookup("lto", &drive)?;
// Note: use open_linux_tape_device, because this also works if no medium loaded
let file = open_linux_tape_device(&drive_config.path)?;
// Note: use open_lto_tape_device, because this also works if no medium loaded
let file = open_lto_tape_device(&drive_config.path)?;
let mut handle = LinuxTapeHandle::new(file);
let mut handle = LtoTapeHandle::new(file)?;
handle.get_drive_and_media_status()
}
@ -1382,9 +1382,9 @@ pub fn list_drives(
let (config, _) = config::drive::config()?;
let linux_drives = linux_tape_device_list();
let lto_drives = lto_tape_device_list();
let drive_list: Vec<LinuxTapeDrive> = config.convert_to_typed_array("linux")?;
let drive_list: Vec<LtoTapeDrive> = config.convert_to_typed_array("lto")?;
let mut list = Vec::new();
@ -1398,7 +1398,7 @@ pub fn list_drives(
continue;
}
let info = lookup_device_identification(&linux_drives, &drive.path);
let info = lookup_device_identification(&lto_drives, &drive.path);
let state = get_tape_device_state(&config, &drive.name)?;
let entry = DriveListEntry { config: drive, info, state };
list.push(entry);

4
src/api2/tape/mod.rs
View File

@ -15,7 +15,7 @@ use proxmox::{
use crate::{
api2::types::TapeDeviceInfo,
tape::{
linux_tape_device_list,
lto_tape_device_list,
linux_tape_changer_list,
},
};
@ -41,7 +41,7 @@ pub mod restore;
/// Scan tape drives
pub fn scan_drives(_param: Value) -> Result<Vec<TapeDeviceInfo>, Error> {
let list = linux_tape_device_list();
let list = lto_tape_device_list();
Ok(list)
}

24
src/api2/types/tape/drive.rs
View File

@ -21,8 +21,8 @@ pub const DRIVE_NAME_SCHEMA: Schema = StringSchema::new("Drive Identifier.")
.max_length(32)
.schema();
pub const LINUX_DRIVE_PATH_SCHEMA: Schema = StringSchema::new(
"The path to a LINUX non-rewinding SCSI tape device (i.e. '/dev/nst0')")
pub const LTO_DRIVE_PATH_SCHEMA: Schema = StringSchema::new(
"The path to a LTO SCSI-generic tape device (i.e. '/dev/sg0')")
.schema();
pub const CHANGER_DRIVENUM_SCHEMA: Schema = IntegerSchema::new(
@ -57,7 +57,7 @@ pub struct VirtualTapeDrive {
schema: DRIVE_NAME_SCHEMA,
},
path: {
schema: LINUX_DRIVE_PATH_SCHEMA,
schema: LTO_DRIVE_PATH_SCHEMA,
},
changer: {
schema: CHANGER_NAME_SCHEMA,
@ -71,8 +71,8 @@ pub struct VirtualTapeDrive {
)]
#[derive(Serialize,Deserialize)]
#[serde(rename_all = "kebab-case")]
/// Linux SCSI tape driver
pub struct LinuxTapeDrive {
/// Lto SCSI tape driver
pub struct LtoTapeDrive {
pub name: String,
pub path: String,
#[serde(skip_serializing_if="Option::is_none")]
@ -84,7 +84,7 @@ pub struct LinuxTapeDrive {
#[api(
properties: {
config: {
type: LinuxTapeDrive,
type: LtoTapeDrive,
},
info: {
type: OptionalDeviceIdentification,
@ -96,7 +96,7 @@ pub struct LinuxTapeDrive {
/// Drive list entry
pub struct DriveListEntry {
#[serde(flatten)]
pub config: LinuxTapeDrive,
pub config: LtoTapeDrive,
#[serde(flatten)]
pub info: OptionalDeviceIdentification,
/// the state of the drive if locked
@ -169,11 +169,11 @@ impl TryFrom<u8> for TapeDensity {
)]
#[derive(Serialize,Deserialize)]
#[serde(rename_all = "kebab-case")]
/// Drive/Media status for Linux SCSI drives.
/// Drive/Media status for Lto SCSI drives.
///
/// Media related data is optional - only set if there is a medium
/// loaded.
pub struct LinuxDriveAndMediaStatus {
pub struct LtoDriveAndMediaStatus {
/// Block size (0 is variable size)
pub blocksize: u32,
/// Tape density
@ -181,17 +181,17 @@ pub struct LinuxDriveAndMediaStatus {
pub density: Option<TapeDensity>,
/// Status flags
pub status: String,
/// Linux Driver Options
/// Lto Driver Options
pub options: String,
/// Tape Alert Flags
#[serde(skip_serializing_if="Option::is_none")]
pub alert_flags: Option<String>,
/// Current file number
#[serde(skip_serializing_if="Option::is_none")]
pub file_number: Option<u32>,
pub file_number: Option<u64>,
/// Current block number
#[serde(skip_serializing_if="Option::is_none")]
pub block_number: Option<u32>,
pub block_number: Option<u64>,
/// Medium Manufacture Date (epoch)
#[serde(skip_serializing_if="Option::is_none")]
pub manufactured: Option<i64>,

314
src/bin/pmt.rs
View File

@ -1,18 +1,18 @@
/// Control magnetic tape drive operation
///
/// This is a Rust implementation, meant to replace the 'mt' command
/// line tool.
/// This is a Rust implementation, using the Proxmox userspace tape
/// driver. This is meant as replacement fot the 'mt' command line
/// tool.
///
/// Features:
///
/// - written in Rust
/// - use Proxmox userspace driver (using SG_IO)
/// - optional json output format
/// - support tape alert flags
/// - support volume statistics
/// - read cartridge memory
use std::collections::HashMap;
use anyhow::{bail, Error};
use serde_json::Value;
@ -43,7 +43,7 @@ pub const RECORD_COUNT_SCHEMA: Schema =
.schema();
pub const DRIVE_OPTION_SCHEMA: Schema = StringSchema::new(
"Linux Tape Driver Option, either numeric value or option name.")
"Lto Tape Driver Option, either numeric value or option name.")
.schema();
pub const DRIVE_OPTION_LIST_SCHEMA: Schema =
@ -57,103 +57,60 @@ use proxmox_backup::{
drive::complete_drive_name,
},
api2::types::{
LINUX_DRIVE_PATH_SCHEMA,
LTO_DRIVE_PATH_SCHEMA,
DRIVE_NAME_SCHEMA,
LinuxTapeDrive,
LtoTapeDrive,
},
tape::{
complete_drive_path,
linux_tape_device_list,
lto_tape_device_list,
drive::{
linux_mtio::{MTCmd, SetDrvBufferOptions},
TapeDriver,
LinuxTapeHandle,
open_linux_tape_device,
LtoTapeHandle,
open_lto_tape_device,
},
},
};
lazy_static::lazy_static!{
static ref DRIVE_OPTIONS: HashMap<String, SetDrvBufferOptions> = {
let mut map = HashMap::new();
for i in 0..31 {
let bit: i32 = 1 << i;
let flag = SetDrvBufferOptions::from_bits_truncate(bit);
if flag.bits() == 0 { continue; }
let name = format!("{:?}", flag)
.to_lowercase()
.replace("_", "-");
map.insert(name, flag);
}
map
};
}
fn parse_drive_options(options: Vec<String>) -> Result<SetDrvBufferOptions, Error> {
let mut value = SetDrvBufferOptions::empty();
for option in options.iter() {
if let Ok::<i32,_>(v) = option.parse() {
value |= SetDrvBufferOptions::from_bits_truncate(v);
} else if let Some(v) = DRIVE_OPTIONS.get(option) {
value |= *v;
} else {
let option = option.to_lowercase().replace("_", "-");
if let Some(v) = DRIVE_OPTIONS.get(&option) {
value |= *v;
} else {
bail!("unknown drive option {}", option);
}
}
}
Ok(value)
}
fn get_tape_handle(param: &Value) -> Result<LinuxTapeHandle, Error> {
fn get_tape_handle(param: &Value) -> Result<LtoTapeHandle, Error> {
if let Some(name) = param["drive"].as_str() {
let (config, _digest) = config::drive::config()?;
let drive: LinuxTapeDrive = config.lookup("linux", &name)?;
let drive: LtoTapeDrive = config.lookup("lto", &name)?;
eprintln!("using device {}", drive.path);
return Ok(LinuxTapeHandle::new(open_linux_tape_device(&drive.path)?))
return LtoTapeHandle::new(open_lto_tape_device(&drive.path)?);
}
if let Some(device) = param["device"].as_str() {
eprintln!("using device {}", device);
return Ok(LinuxTapeHandle::new(open_linux_tape_device(&device)?))
return LtoTapeHandle::new(open_lto_tape_device(&device)?);
}
if let Ok(name) = std::env::var("PROXMOX_TAPE_DRIVE") {
let (config, _digest) = config::drive::config()?;
let drive: LinuxTapeDrive = config.lookup("linux", &name)?;
let drive: LtoTapeDrive = config.lookup("lto", &name)?;
eprintln!("using device {}", drive.path);
return Ok(LinuxTapeHandle::new(open_linux_tape_device(&drive.path)?))
return LtoTapeHandle::new(open_lto_tape_device(&drive.path)?);
}
if let Ok(device) = std::env::var("TAPE") {
eprintln!("using device {}", device);
return Ok(LinuxTapeHandle::new(open_linux_tape_device(&device)?))
return LtoTapeHandle::new(open_lto_tape_device(&device)?);
}
let (config, _digest) = config::drive::config()?;
let mut drive_names = Vec::new();
for (name, (section_type, _)) in config.sections.iter() {
if section_type != "linux" { continue; }
if section_type != "lto" { continue; }
drive_names.push(name);
}
if drive_names.len() == 1 {
let name = drive_names[0];
let drive: LinuxTapeDrive = config.lookup("linux", &name)?;
let drive: LtoTapeDrive = config.lookup("lto", &name)?;
eprintln!("using device {}", drive.path);
return Ok(LinuxTapeHandle::new(open_linux_tape_device(&drive.path)?))
return LtoTapeHandle::new(open_lto_tape_device(&drive.path)?);
}
bail!("no drive/device specified");
@ -167,7 +124,7 @@ fn get_tape_handle(param: &Value) -> Result<LinuxTapeHandle, Error> {
optional: true,
},
device: {
schema: LINUX_DRIVE_PATH_SCHEMA,
schema: LTO_DRIVE_PATH_SCHEMA,
optional: true,
},
count: {
@ -200,7 +157,7 @@ fn asf(count: usize, param: Value) -> Result<(), Error> {
optional: true,
},
device: {
schema: LINUX_DRIVE_PATH_SCHEMA,
schema: LTO_DRIVE_PATH_SCHEMA,
optional: true,
},
count: {
@ -230,7 +187,7 @@ fn bsf(count: usize, param: Value) -> Result<(), Error> {
optional: true,
},
device: {
schema: LINUX_DRIVE_PATH_SCHEMA,
schema: LTO_DRIVE_PATH_SCHEMA,
optional: true,
},
count: {
@ -243,11 +200,12 @@ fn bsf(count: usize, param: Value) -> Result<(), Error> {
///
/// This leaves the tape positioned at the first block of the file
/// that is count - 1 files before the current file.
fn bsfm(count: i32, param: Value) -> Result<(), Error> {
fn bsfm(count: usize, param: Value) -> Result<(), Error> {
let mut handle = get_tape_handle(&param)?;
handle.mtop(MTCmd::MTBSFM, count, "bsfm")?;
handle.backward_space_count_files(count)?;
handle.forward_space_count_files(1)?;
Ok(())
}
@ -261,7 +219,7 @@ fn bsfm(count: i32, param: Value) -> Result<(), Error> {
optional: true,
},
device: {
schema: LINUX_DRIVE_PATH_SCHEMA,
schema: LTO_DRIVE_PATH_SCHEMA,
optional: true,
},
count: {
@ -275,7 +233,9 @@ fn bsr(count: i32, param: Value) -> Result<(), Error> {
let mut handle = get_tape_handle(&param)?;
handle.mtop(MTCmd::MTBSR, count, "backward space records")?;
unimplemented!();
// fixme: handle.mtop(MTCmd::MTBSR, count, "backward space records")?;
Ok(())
}
@ -289,7 +249,7 @@ fn bsr(count: i32, param: Value) -> Result<(), Error> {
optional: true,
},
device: {
schema: LINUX_DRIVE_PATH_SCHEMA,
schema: LTO_DRIVE_PATH_SCHEMA,
optional: true,
},
"output-format": {
@ -340,7 +300,7 @@ fn cartridge_memory(param: Value) -> Result<(), Error> {
optional: true,
},
device: {
schema: LINUX_DRIVE_PATH_SCHEMA,
schema: LTO_DRIVE_PATH_SCHEMA,
optional: true,
},
"output-format": {
@ -389,7 +349,7 @@ fn tape_alert_flags(param: Value) -> Result<(), Error> {
optional: true,
},
device: {
schema: LINUX_DRIVE_PATH_SCHEMA,
schema: LTO_DRIVE_PATH_SCHEMA,
optional: true,
},
},
@ -413,7 +373,7 @@ fn eject(param: Value) -> Result<(), Error> {
optional: true,
},
device: {
schema: LINUX_DRIVE_PATH_SCHEMA,
schema: LTO_DRIVE_PATH_SCHEMA,
optional: true,
},
},
@ -437,7 +397,7 @@ fn eod(param: Value) -> Result<(), Error> {
optional: true,
},
device: {
schema: LINUX_DRIVE_PATH_SCHEMA,
schema: LTO_DRIVE_PATH_SCHEMA,
optional: true,
},
fast: {
@ -466,7 +426,7 @@ fn erase(fast: Option<bool>, param: Value) -> Result<(), Error> {
optional: true,
},
device: {
schema: LINUX_DRIVE_PATH_SCHEMA,
schema: LTO_DRIVE_PATH_SCHEMA,
optional: true,
},
count: {
@ -495,7 +455,7 @@ fn fsf(count: usize, param: Value) -> Result<(), Error> {
optional: true,
},
device: {
schema: LINUX_DRIVE_PATH_SCHEMA,
schema: LTO_DRIVE_PATH_SCHEMA,
optional: true,
},
count: {
@ -508,11 +468,12 @@ fn fsf(count: usize, param: Value) -> Result<(), Error> {
///
/// This leaves the tape positioned at the last block of the file that
/// is count - 1 files past the current file.
fn fsfm(count: i32, param: Value) -> Result<(), Error> {
fn fsfm(count: usize, param: Value) -> Result<(), Error> {
let mut handle = get_tape_handle(&param)?;
handle.mtop(MTCmd::MTFSFM, count, "fsfm")?;
handle.forward_space_count_files(count)?;
handle.backward_space_count_files(1)?;
Ok(())
}
@ -526,7 +487,7 @@ fn fsfm(count: i32, param: Value) -> Result<(), Error> {
optional: true,
},
device: {
schema: LINUX_DRIVE_PATH_SCHEMA,
schema: LTO_DRIVE_PATH_SCHEMA,
optional: true,
},
count: {
@ -540,7 +501,8 @@ fn fsr(count: i32, param: Value) -> Result<(), Error> {
let mut handle = get_tape_handle(&param)?;
handle.mtop(MTCmd::MTFSR, count, "forward space records")?;
unimplemented!();
// fixme: handle.mtop(MTCmd::MTFSR, count, "forward space records")?;
Ok(())
}
@ -554,7 +516,7 @@ fn fsr(count: i32, param: Value) -> Result<(), Error> {
optional: true,
},
device: {
schema: LINUX_DRIVE_PATH_SCHEMA,
schema: LTO_DRIVE_PATH_SCHEMA,
optional: true,
},
},
@ -564,7 +526,7 @@ fn fsr(count: i32, param: Value) -> Result<(), Error> {
fn load(param: Value) -> Result<(), Error> {
let mut handle = get_tape_handle(&param)?;
handle.mtload()?;
handle.load()?;
Ok(())
}
@ -578,7 +540,7 @@ fn load(param: Value) -> Result<(), Error> {
optional: true,
},
device: {
schema: LINUX_DRIVE_PATH_SCHEMA,
schema: LTO_DRIVE_PATH_SCHEMA,
optional: true,
},
},
@ -589,7 +551,8 @@ fn lock(param: Value) -> Result<(), Error> {
let mut handle = get_tape_handle(&param)?;
handle.mtop(MTCmd::MTLOCK, 1, "lock tape drive door")?;
unimplemented!();
// fixme: handle.mtop(MTCmd::MTLOCK, 1, "lock tape drive door")?;
Ok(())
}
@ -603,7 +566,7 @@ fn lock(param: Value) -> Result<(), Error> {
optional: true,
},
device: {
schema: LINUX_DRIVE_PATH_SCHEMA,
schema: LTO_DRIVE_PATH_SCHEMA,
optional: true,
},
},
@ -634,7 +597,7 @@ fn scan(param: Value) -> Result<(), Error> {
let output_format = get_output_format(&param);
let list = linux_tape_device_list();
let list = lto_tape_device_list();
if output_format == "json-pretty" {
println!("{}", serde_json::to_string_pretty(&list)?);
@ -657,7 +620,6 @@ fn scan(param: Value) -> Result<(), Error> {
Ok(())
}
#[api(
input: {
properties: {
@ -666,36 +628,7 @@ fn scan(param: Value) -> Result<(), Error> {
optional: true,
},
device: {
schema: LINUX_DRIVE_PATH_SCHEMA,
optional: true,
},
size: {
description: "Block size in bytes.",
minimum: 0,
},
},
},
)]
/// Set the block size of the drive
fn setblk(size: i32, param: Value) -> Result<(), Error> {
let mut handle = get_tape_handle(&param)?;
handle.mtop(MTCmd::MTSETBLK, size, "set block size")?;
Ok(())
}
#[api(
input: {
properties: {
drive: {
schema: DRIVE_NAME_SCHEMA,
optional: true,
},
device: {
schema: LINUX_DRIVE_PATH_SCHEMA,
schema: LTO_DRIVE_PATH_SCHEMA,
optional: true,
},
"output-format": {
@ -745,123 +678,7 @@ fn status(param: Value) -> Result<(), Error> {
optional: true,
},
device: {
schema: LINUX_DRIVE_PATH_SCHEMA,
optional: true,
},
options: {
schema: DRIVE_OPTION_LIST_SCHEMA,
optional: true,
},
defaults: {
description: "Set default options (buffer-writes async-writes read-ahead can-bsr).",
type: bool,
optional: true,
},
},
},
)]
/// Set device driver options (root only)
fn st_options(
options: Option<Vec<String>>,
defaults: Option<bool>,
param: Value) -> Result<(), Error> {
let handle = get_tape_handle(&param)?;
let options = match defaults {
Some(true) => {
if options.is_some() {
bail!("option --defaults conflicts with specified options");
}
let mut list = Vec::new();
list.push(String::from("buffer-writes"));
list.push(String::from("async-writes"));
list.push(String::from("read-ahead"));
list.push(String::from("can-bsr"));
list
}
Some(false) | None => {
options.unwrap_or_else(|| Vec::new())
}
};
let value = parse_drive_options(options)?;
handle.set_drive_buffer_options(value)?;
Ok(())
}
#[api(
input: {
properties: {
drive: {
schema: DRIVE_NAME_SCHEMA,
optional: true,
},
device: {
schema: LINUX_DRIVE_PATH_SCHEMA,
optional: true,
},
options: {
schema: DRIVE_OPTION_LIST_SCHEMA,
},
},
},
)]
/// Set selected device driver options bits (root only)
fn st_set_options(options: Vec<String>, param: Value) -> Result<(), Error> {
let handle = get_tape_handle(&param)?;
let value = parse_drive_options(options)?;
handle.drive_buffer_set_options(value)?;
Ok(())
}
#[api(
input: {
properties: {
drive: {
schema: DRIVE_NAME_SCHEMA,
optional: true,
},
device: {
schema: LINUX_DRIVE_PATH_SCHEMA,
optional: true,
},
options: {
schema: DRIVE_OPTION_LIST_SCHEMA,
},
},
},
)]
/// Clear selected device driver options bits (root only)
fn st_clear_options(options: Vec<String>, param: Value) -> Result<(), Error> {
let handle = get_tape_handle(&param)?;
let value = parse_drive_options(options)?;
handle.drive_buffer_clear_options(value)?;
Ok(())
}
#[api(
input: {
properties: {
drive: {
schema: DRIVE_NAME_SCHEMA,
optional: true,
},
device: {
schema: LINUX_DRIVE_PATH_SCHEMA,
schema: LTO_DRIVE_PATH_SCHEMA,
optional: true,
},
},
@ -872,7 +689,8 @@ fn unlock(param: Value) -> Result<(), Error> {
let mut handle = get_tape_handle(&param)?;
handle.mtop(MTCmd::MTUNLOCK, 1, "unlock tape drive door")?;
unimplemented!();
//handle.mtop(MTCmd::MTUNLOCK, 1, "unlock tape drive door")?;
Ok(())
}
@ -886,7 +704,7 @@ fn unlock(param: Value) -> Result<(), Error> {
optional: true,
},
device: {
schema: LINUX_DRIVE_PATH_SCHEMA,
schema: LTO_DRIVE_PATH_SCHEMA,
optional: true,
},
"output-format": {
@ -935,7 +753,7 @@ fn volume_statistics(param: Value) -> Result<(), Error> {
optional: true,
},
device: {
schema: LINUX_DRIVE_PATH_SCHEMA,
schema: LTO_DRIVE_PATH_SCHEMA,
optional: true,
},
count: {
@ -946,10 +764,13 @@ fn volume_statistics(param: Value) -> Result<(), Error> {
},
)]
/// Write count (default 1) EOF marks at current position.
fn weof(count: Option<i32>, param: Value) -> Result<(), Error> {
fn weof(count: Option<usize>, param: Value) -> Result<(), Error> {
let count = count.unwrap_or(1);
let mut handle = get_tape_handle(&param)?;
handle.mtop(MTCmd::MTWEOF, count.unwrap_or(1), "write EOF mark")?;
handle.write_filemarks(count)?;
Ok(())
}
@ -967,7 +788,6 @@ fn main() -> Result<(), Error> {
CliCommand::new(method)
.completion_cb("drive", complete_drive_name)
.completion_cb("device", complete_drive_path)
.completion_cb("options", complete_option_name)
};
let cmd_def = CliCommandMap::new()
@ -987,11 +807,7 @@ fn main() -> Result<(), Error> {
.insert("lock", std_cmd(&API_METHOD_LOCK))
.insert("rewind", std_cmd(&API_METHOD_REWIND))
.insert("scan", CliCommand::new(&API_METHOD_SCAN))
.insert("setblk", CliCommand::new(&API_METHOD_SETBLK).arg_param(&["size"]))
.insert("status", std_cmd(&API_METHOD_STATUS))
.insert("stoptions", std_cmd(&API_METHOD_ST_OPTIONS).arg_param(&["options"]))
.insert("stsetoptions", std_cmd(&API_METHOD_ST_SET_OPTIONS).arg_param(&["options"]))
.insert("stclearoptions", std_cmd(&API_METHOD_ST_CLEAR_OPTIONS).arg_param(&["options"]))
.insert("tape-alert-flags", std_cmd(&API_METHOD_TAPE_ALERT_FLAGS))
.insert("unlock", std_cmd(&API_METHOD_UNLOCK))
.insert("volume-statistics", std_cmd(&API_METHOD_VOLUME_STATISTICS))
@ -1005,11 +821,3 @@ fn main() -> Result<(), Error> {
Ok(())
}
// Completion helpers
pub fn complete_option_name(_arg: &str, _param: &HashMap<String, String>) -> Vec<String> {
DRIVE_OPTIONS
.keys()
.map(String::from)
.collect()
}

4
src/bin/pmtx.rs
View File

@ -33,7 +33,7 @@ use proxmox_backup::{
SCSI_CHANGER_PATH_SCHEMA,
CHANGER_NAME_SCHEMA,
ScsiTapeChanger,
LinuxTapeDrive,
LtoTapeDrive,
},
tape::{
linux_tape_changer_list,
@ -67,7 +67,7 @@ fn get_changer_handle(param: &Value) -> Result<File, Error> {
if let Ok(name) = std::env::var("PROXMOX_TAPE_DRIVE") {
let (config, _digest) = config::drive::config()?;
let drive: LinuxTapeDrive = config.lookup("linux", &name)?;
let drive: LtoTapeDrive = config.lookup("lto", &name)?;
if let Some(changer) = drive.changer {
let changer_config: ScsiTapeChanger = config.lookup("changer", &changer)?;
eprintln!("using device {}", changer_config.path);

8
src/bin/proxmox_tape/drive.rs
View File

@ -21,7 +21,7 @@ use proxmox_backup::{
config::drive::{
complete_drive_name,
complete_changer_name,
complete_linux_drive_name,
complete_lto_drive_name,
},
};
@ -33,13 +33,13 @@ pub fn drive_commands() -> CommandLineInterface {
.insert("config",
CliCommand::new(&API_METHOD_GET_CONFIG)
.arg_param(&["name"])
.completion_cb("name", complete_linux_drive_name)
.completion_cb("name", complete_lto_drive_name)
)
.insert(
"remove",
CliCommand::new(&api2::config::drive::API_METHOD_DELETE_DRIVE)
.arg_param(&["name"])
.completion_cb("name", complete_linux_drive_name)
.completion_cb("name", complete_lto_drive_name)
)
.insert(
"create",
@ -53,7 +53,7 @@ pub fn drive_commands() -> CommandLineInterface {
"update",
CliCommand::new(&api2::config::drive::API_METHOD_UPDATE_DRIVE)
.arg_param(&["name"])
.completion_cb("name", complete_linux_drive_name)
.completion_cb("name", complete_lto_drive_name)
.completion_cb("path", complete_drive_path)
.completion_cb("changer", complete_changer_name)
)

189
src/bin/sg-tape-cmd.rs
View File

@ -1,7 +1,5 @@
/// Tape command implemented using scsi-generic raw commands
///
/// SCSI-generic command needs root privileges, so this binary need
/// to be setuid root.
/// Helper to run tape commands as root. Currently only required
/// to read and set the encryption key.
///
/// This command can use STDIN as tape device handle.
@ -24,41 +22,41 @@ use proxmox_backup::{
config,
backup::Fingerprint,
api2::types::{
LINUX_DRIVE_PATH_SCHEMA,
LTO_DRIVE_PATH_SCHEMA,
DRIVE_NAME_SCHEMA,
TAPE_ENCRYPTION_KEY_FINGERPRINT_SCHEMA,
MEDIA_SET_UUID_SCHEMA,
LinuxTapeDrive,
LtoTapeDrive,
},
tape::{
drive::{
TapeDriver,
LinuxTapeHandle,
open_linux_tape_device,
check_tape_is_linux_tape_device,
LtoTapeHandle,
open_lto_tape_device,
check_tape_is_lto_tape_device,
},
},
};
fn get_tape_handle(param: &Value) -> Result<LinuxTapeHandle, Error> {
fn get_tape_handle(param: &Value) -> Result<LtoTapeHandle, Error> {
let handle = if let Some(name) = param["drive"].as_str() {
let (config, _digest) = config::drive::config()?;
let drive: LinuxTapeDrive = config.lookup("linux", &name)?;
let drive: LtoTapeDrive = config.lookup("lto", &name)?;
eprintln!("using device {}", drive.path);
drive.open()?
} else if let Some(device) = param["device"].as_str() {
eprintln!("using device {}", device);
LinuxTapeHandle::new(open_linux_tape_device(&device)?)
LtoTapeHandle::new(open_lto_tape_device(&device)?)?
} else if let Some(true) = param["stdin"].as_bool() {
eprintln!("using stdin");
let fd = std::io::stdin().as_raw_fd();
let file = unsafe { File::from_raw_fd(fd) };
check_tape_is_linux_tape_device(&file)?;
LinuxTapeHandle::new(file)
check_tape_is_lto_tape_device(&file)?;
LtoTapeHandle::new(file)?
} else if let Ok(name) = std::env::var("PROXMOX_TAPE_DRIVE") {
let (config, _digest) = config::drive::config()?;
let drive: LinuxTapeDrive = config.lookup("linux", &name)?;
let drive: LtoTapeDrive = config.lookup("lto", &name)?;
eprintln!("using device {}", drive.path);
drive.open()?
} else {
@ -66,13 +64,13 @@ fn get_tape_handle(param: &Value) -> Result<LinuxTapeHandle, Error> {
let mut drive_names = Vec::new();
for (name, (section_type, _)) in config.sections.iter() {
if section_type != "linux" { continue; }
if section_type != "lto" { continue; }
drive_names.push(name);
}
if drive_names.len() == 1 {
let name = drive_names[0];
let drive: LinuxTapeDrive = config.lookup("linux", &name)?;
let drive: LtoTapeDrive = config.lookup("lto", &name)?;
eprintln!("using device {}", drive.path);
drive.open()?
} else {
@ -83,111 +81,6 @@ fn get_tape_handle(param: &Value) -> Result<LinuxTapeHandle, Error> {
Ok(handle)
}
#[api(
input: {
properties: {
drive: {
schema: DRIVE_NAME_SCHEMA,
optional: true,
},
device: {
schema: LINUX_DRIVE_PATH_SCHEMA,
optional: true,
},
stdin: {
description: "Use standard input as device handle.",
type: bool,
optional: true,
},
},
},
)]
/// Tape/Media Status
fn status(
param: Value,
) -> Result<(), Error> {
let result = proxmox::try_block!({
let mut handle = get_tape_handle(&param)?;
handle.get_drive_and_media_status()
}).map_err(|err: Error| err.to_string());
println!("{}", serde_json::to_string_pretty(&result)?);
Ok(())
}
#[api(
input: {
properties: {
drive: {
schema: DRIVE_NAME_SCHEMA,
optional: true,
},
device: {
schema: LINUX_DRIVE_PATH_SCHEMA,
optional: true,
},
stdin: {
description: "Use standard input as device handle.",
type: bool,
optional: true,
},
},
},
)]
/// Read Cartridge Memory (Medium auxiliary memory attributes)
fn cartridge_memory(
param: Value,
) -> Result<(), Error> {
let result = proxmox::try_block!({
let mut handle = get_tape_handle(&param)?;
handle.cartridge_memory()
}).map_err(|err| err.to_string());
println!("{}", serde_json::to_string_pretty(&result)?);
Ok(())
}
#[api(
input: {
properties: {
drive: {
schema: DRIVE_NAME_SCHEMA,
optional: true,
},
device: {
schema: LINUX_DRIVE_PATH_SCHEMA,
optional: true,
},
stdin: {
description: "Use standard input as device handle.",
type: bool,
optional: true,
},
},
},
)]
/// Read Tape Alert Flags
fn tape_alert_flags(
param: Value,
) -> Result<(), Error> {
let result = proxmox::try_block!({
let mut handle = get_tape_handle(&param)?;
let flags = handle.tape_alert_flags()?;
Ok(flags.bits())
}).map_err(|err: Error| err.to_string());
println!("{}", serde_json::to_string_pretty(&result)?);
Ok(())
}
#[api(
input: {
properties: {
@ -204,7 +97,7 @@ fn tape_alert_flags(
optional: true,
},
device: {
schema: LINUX_DRIVE_PATH_SCHEMA,
schema: LTO_DRIVE_PATH_SCHEMA,
optional: true,
},
stdin: {
@ -245,40 +138,6 @@ fn set_encryption(
Ok(())
}
#[api(
input: {
properties: {
drive: {
schema: DRIVE_NAME_SCHEMA,
optional: true,
},
device: {
schema: LINUX_DRIVE_PATH_SCHEMA,
optional: true,
},
stdin: {
description: "Use standard input as device handle.",
type: bool,
optional: true,
},
},
},
)]
/// Read volume statistics
fn volume_statistics(
param: Value,
) -> Result<(), Error> {
let result = proxmox::try_block!({
let mut handle = get_tape_handle(&param)?;
handle.volume_statistics()
}).map_err(|err: Error| err.to_string());
println!("{}", serde_json::to_string_pretty(&result)?);
Ok(())
}
fn main() -> Result<(), Error> {
// check if we are user root or backup
@ -300,22 +159,6 @@ fn main() -> Result<(), Error> {
}
let cmd_def = CliCommandMap::new()
.insert(
"status",
CliCommand::new(&API_METHOD_STATUS)
)
.insert(
"cartridge-memory",
CliCommand::new(&API_METHOD_CARTRIDGE_MEMORY)
)
.insert(
"tape-alert-flags",
CliCommand::new(&API_METHOD_TAPE_ALERT_FLAGS)
)
.insert(
"volume-statistics",
CliCommand::new(&API_METHOD_VOLUME_STATISTICS)
)
.insert(
"encryption",
CliCommand::new(&API_METHOD_SET_ENCRYPTION)

18
src/config/drive.rs
View File

@ -1,12 +1,12 @@
//! Tape drive/changer configuration
//!
//! This configuration module is based on [`SectionConfig`], and
//! provides a type safe interface to store [`LinuxTapeDrive`],
//! provides a type safe interface to store [`LtoTapeDrive`],
//! [`VirtualTapeDrive`] and [`ScsiTapeChanger`] configurations.
//!
//! Drive type [`VirtualTapeDrive`] is only useful for debugging.
//!
//! [LinuxTapeDrive]: crate::api2::types::LinuxTapeDrive
//! [LtoTapeDrive]: crate::api2::types::LtoTapeDrive
//! [VirtualTapeDrive]: crate::api2::types::VirtualTapeDrive
//! [ScsiTapeChanger]: crate::api2::types::ScsiTapeChanger
//! [SectionConfig]: proxmox::api::section_config::SectionConfig
@ -36,7 +36,7 @@ use crate::{
api2::types::{
DRIVE_NAME_SCHEMA,
VirtualTapeDrive,
LinuxTapeDrive,
LtoTapeDrive,
ScsiTapeChanger,
},
};
@ -57,11 +57,11 @@ fn init() -> SectionConfig {
let plugin = SectionConfigPlugin::new("virtual".to_string(), Some("name".to_string()), obj_schema);
config.register_plugin(plugin);
let obj_schema = match LinuxTapeDrive::API_SCHEMA {
let obj_schema = match LtoTapeDrive::API_SCHEMA {
Schema::Object(ref obj_schema) => obj_schema,
_ => unreachable!(),
};
let plugin = SectionConfigPlugin::new("linux".to_string(), Some("name".to_string()), obj_schema);
let plugin = SectionConfigPlugin::new("lto".to_string(), Some("name".to_string()), obj_schema);
config.register_plugin(plugin);
let obj_schema = match ScsiTapeChanger::API_SCHEMA {
@ -116,7 +116,7 @@ pub fn save_config(config: &SectionConfigData) -> Result<(), Error> {
pub fn check_drive_exists(config: &SectionConfigData, drive: &str) -> Result<(), Error> {
match config.sections.get(drive) {
Some((section_type, _)) => {
if !(section_type == "linux" || section_type == "virtual") {
if !(section_type == "lto" || section_type == "virtual") {
bail!("Entry '{}' exists, but is not a tape drive", drive);
}
}
@ -138,12 +138,12 @@ pub fn complete_drive_name(_arg: &str, _param: &HashMap<String, String>) -> Vec<
}
}
/// List Linux tape drives
pub fn complete_linux_drive_name(_arg: &str, _param: &HashMap<String, String>) -> Vec<String> {
/// List Lto tape drives
pub fn complete_lto_drive_name(_arg: &str, _param: &HashMap<String, String>) -> Vec<String> {
match config() {
Ok((data, _digest)) => data.sections.iter()
.filter(|(_id, (section_type, _))| {
section_type == "linux"
section_type == "lto"
})
.map(|(id, _)| id.to_string())
.collect(),

4
src/tape/changer/mod.rs
View File

@ -26,7 +26,7 @@ use proxmox::{
use crate::api2::types::{
SLOT_ARRAY_SCHEMA,
ScsiTapeChanger,
LinuxTapeDrive,
LtoTapeDrive,
};
/// Changer element status.
@ -523,7 +523,7 @@ pub struct MtxMediaChanger {
impl MtxMediaChanger {
pub fn with_drive_config(drive_config: &LinuxTapeDrive) -> Result<Self, Error> {
pub fn with_drive_config(drive_config: &LtoTapeDrive) -> Result<Self, Error> {
let (config, _digest) = crate::config::drive::config()?;
let changer_config: ScsiTapeChanger = match drive_config.changer {
Some(ref changer) => config.lookup("changer", changer)?,

420
src/tape/drive/lto/mod.rs Normal file
View File

@ -0,0 +1,420 @@
//! Driver for LTO SCSI tapes
//!
//! This is a userspace drive implementation using SG_IO.
//!
//! Why we do not use the Linux tape driver:
//!
//! - missing features (MAM, Encryption, ...)
//!
//! - strange permission handling - only root (or CAP_SYS_RAWIO) can
//! do SG_IO (SYS_RAW_IO)
//!
//! - unability to detect EOT (you just get EIO)
mod sg_tape;
pub use sg_tape::*;
use std::fs::{OpenOptions, File};
use std::os::unix::fs::OpenOptionsExt;
use std::os::unix::io::{AsRawFd, FromRawFd, RawFd};
use std::convert::TryFrom;
use anyhow::{bail, format_err, Error};
use nix::fcntl::{fcntl, FcntlArg, OFlag};
use proxmox::{
tools::Uuid,
sys::error::SysResult,
};
use crate::{
config,
tools::run_command,
backup::{
Fingerprint,
KeyConfig,
},
api2::types::{
MamAttribute,
LtoDriveAndMediaStatus,
LtoTapeDrive,
},
tape::{
TapeRead,
TapeWrite,
drive::{
TapeDriver,
TapeAlertFlags,
Lp17VolumeStatistics,
mam_extract_media_usage,
},
file_formats::{
PROXMOX_BACKUP_MEDIA_SET_LABEL_MAGIC_1_0,
MediaSetLabel,
MediaContentHeader,
},
},
};
impl LtoTapeDrive {
/// Open a tape device
///
/// This does additional checks:
///
/// - check if it is a non-rewinding tape device
/// - check if drive is ready (tape loaded)
/// - check block size
/// - for autoloader only, try to reload ejected tapes
pub fn open(&self) -> Result<LtoTapeHandle, Error> {
proxmox::try_block!({
let file = open_lto_tape_device(&self.path)?;
let mut handle = LtoTapeHandle::new(file)?;
if !handle.sg_tape.test_unit_ready().is_ok() {
// for autoloader only, try to reload ejected tapes
if self.changer.is_some() {
let _ = handle.sg_tape.load(); // just try, ignore error
}
}
handle.sg_tape.wait_until_ready()?;
// Only root can set driver options, so we cannot
// handle.set_default_options()?;
Ok(handle)
}).map_err(|err: Error| format_err!("open drive '{}' ({}) failed - {}", self.name, self.path, err))
}
}
/// Lto Tape device handle
pub struct LtoTapeHandle {
sg_tape: SgTape,
}
impl LtoTapeHandle {
/// Creates a new instance
pub fn new(file: File) -> Result<Self, Error> {
let sg_tape = SgTape::new(file)?;
Ok(Self { sg_tape })
}
/// Set all options we need/want
pub fn set_default_options(&self) -> Result<(), Error> {
// fixme
Ok(())
}
/// Write a single EOF mark without flushing buffers
pub fn write_filemarks(&mut self, count: usize) -> Result<(), std::io::Error> {
self.sg_tape.write_filemarks(count, false)
}
/// Get Tape and Media status
pub fn get_drive_and_media_status(&mut self) -> Result<LtoDriveAndMediaStatus, Error> {
let (file_number, block_number) = match self.sg_tape.position() {
Ok(position) => (
Some(position.logical_file_id),
Some(position.logical_object_number),
),
Err(_) => (None, None),
};
let options = String::from("FIXME");
let alert_flags = self.tape_alert_flags()
.map(|flags| format!("{:?}", flags))
.ok();
let mut status = LtoDriveAndMediaStatus {
blocksize: 0, // fixme: remove
density: None, // fixme
status: String::from("FIXME"),
options,
alert_flags,
file_number,
block_number,
manufactured: None,
bytes_read: None,
bytes_written: None,
medium_passes: None,
medium_wearout: None,
volume_mounts: None,
};
if self.sg_tape.test_unit_ready()? {
if let Ok(mam) = self.cartridge_memory() {
let usage = mam_extract_media_usage(&mam)?;
status.manufactured = Some(usage.manufactured);
status.bytes_read = Some(usage.bytes_read);
status.bytes_written = Some(usage.bytes_written);
if let Ok(volume_stats) = self.volume_statistics() {
let passes = std::cmp::max(
volume_stats.beginning_of_medium_passes,
volume_stats.middle_of_tape_passes,
);
// assume max. 16000 medium passes
// see: https://en.wikipedia.org/wiki/Linear_Tape-Open
let wearout: f64 = (passes as f64)/(16000.0 as f64);
status.medium_passes = Some(passes);
status.medium_wearout = Some(wearout);
status.volume_mounts = Some(volume_stats.volume_mounts);
}
}
}
Ok(status)
}
pub fn load(&mut self) -> Result<(), Error> {
self.sg_tape.load()
}
/// Read Cartridge Memory (MAM Attributes)
pub fn cartridge_memory(&mut self) -> Result<Vec<MamAttribute>, Error> {
self.sg_tape.cartridge_memory()
}
/// Read Volume Statistics
pub fn volume_statistics(&mut self) -> Result<Lp17VolumeStatistics, Error> {
self.sg_tape.volume_statistics()
}
}
impl TapeDriver for LtoTapeHandle {
fn sync(&mut self) -> Result<(), Error> {
self.sg_tape.sync()?;
Ok(())
}
/// Go to the end of the recorded media (for appending files).
fn move_to_eom(&mut self) -> Result<(), Error> {
self.sg_tape.move_to_eom()
}
fn forward_space_count_files(&mut self, count: usize) -> Result<(), Error> {
self.sg_tape.space_filemarks(isize::try_from(count)?)
}
fn backward_space_count_files(&mut self, count: usize) -> Result<(), Error> {
self.sg_tape.space_filemarks(-isize::try_from(count)?)
}
fn rewind(&mut self) -> Result<(), Error> {
self.sg_tape.rewind()
}
fn current_file_number(&mut self) -> Result<u64, Error> {
self.sg_tape.current_file_number()
}
fn erase_media(&mut self, fast: bool) -> Result<(), Error> {
self.rewind()?; // important - erase from BOT
self.sg_tape.erase_media(fast)
}
fn read_next_file<'a>(&'a mut self) -> Result<Option<Box<dyn TapeRead + 'a>>, std::io::Error> {
let reader = self.sg_tape.open_reader()?;
let handle = match reader {
Some(reader) => {
let reader: Box<dyn TapeRead> = Box::new(reader);
Some(reader)
}
None => None,
};
Ok(handle)
}
fn write_file<'a>(&'a mut self) -> Result<Box<dyn TapeWrite + 'a>, std::io::Error> {
let handle = self.sg_tape.open_writer();
Ok(Box::new(handle))
}
fn write_media_set_label(
&mut self,
media_set_label: &MediaSetLabel,
key_config: Option<&KeyConfig>,
) -> Result<(), Error> {
let file_number = self.current_file_number()?;
if file_number != 1 {
self.rewind()?;
self.forward_space_count_files(1)?; // skip label
}
let file_number = self.current_file_number()?;
if file_number != 1 {
bail!("write_media_set_label failed - got wrong file number ({} != 1)", file_number);
}
self.set_encryption(None)?;
{ // limit handle scope
let mut handle = self.write_file()?;
let mut value = serde_json::to_value(media_set_label)?;
if media_set_label.encryption_key_fingerprint.is_some() {
match key_config {
Some(key_config) => {
value["key-config"] = serde_json::to_value(key_config)?;
}
None => {
bail!("missing encryption key config");
}
}
}
let raw = serde_json::to_string_pretty(&value)?;
let header = MediaContentHeader::new(PROXMOX_BACKUP_MEDIA_SET_LABEL_MAGIC_1_0, raw.len() as u32);
handle.write_header(&header, raw.as_bytes())?;
handle.finish(false)?;
}
self.sync()?; // sync data to tape
Ok(())
}
/// Rewind and put the drive off line (Eject media).
fn eject_media(&mut self) -> Result<(), Error> {
self.sg_tape.eject()
}
/// Read Tape Alert Flags
fn tape_alert_flags(&mut self) -> Result<TapeAlertFlags, Error> {
self.sg_tape.tape_alert_flags()
}
/// Set or clear encryption key
///
/// Note: Only 'root' can read secret encryption keys, so we need
/// to spawn setuid binary 'sg-tape-cmd'.
fn set_encryption(
&mut self,
key_fingerprint: Option<(Fingerprint, Uuid)>,
) -> Result<(), Error> {
if nix::unistd::Uid::effective().is_root() {
if let Some((ref key_fingerprint, ref uuid)) = key_fingerprint {
let (key_map, _digest) = config::tape_encryption_keys::load_keys()?;
match key_map.get(key_fingerprint) {
Some(item) => {
// derive specialized key for each media-set
let mut tape_key = [0u8; 32];
let uuid_bytes: [u8; 16] = uuid.as_bytes().clone();
openssl::pkcs5::pbkdf2_hmac(
&item.key,
&uuid_bytes,
10,
openssl::hash::MessageDigest::sha256(),
&mut tape_key)?;
return self.sg_tape.set_encryption(Some(tape_key));
}
None => bail!("unknown tape encryption key '{}'", key_fingerprint),
}
} else {
return self.sg_tape.set_encryption(None);
}
}
let output = if let Some((fingerprint, uuid)) = key_fingerprint {
let fingerprint = crate::tools::format::as_fingerprint(fingerprint.bytes());
run_sg_tape_cmd("encryption", &[
"--fingerprint", &fingerprint,
"--uuid", &uuid.to_string(),
], self.sg_tape.file_mut().as_raw_fd())?
} else {
run_sg_tape_cmd("encryption", &[], self.sg_tape.file_mut().as_raw_fd())?
};
let result: Result<(), String> = serde_json::from_str(&output)?;
result.map_err(|err| format_err!("{}", err))
}
}
/// Check for correct Major/Minor numbers
pub fn check_tape_is_lto_tape_device(file: &File) -> Result<(), Error> {
let stat = nix::sys::stat::fstat(file.as_raw_fd())?;
let devnum = stat.st_rdev;
let major = unsafe { libc::major(devnum) };
let _minor = unsafe { libc::minor(devnum) };
if major == 9 {
bail!("not a scsi-generic tape device (cannot use linux tape devices)");
}
if major != 21 {
bail!("not a scsi-generic tape device");
}
Ok(())
}
/// Opens a Lto tape device
///
/// The open call use O_NONBLOCK, but that flag is cleard after open
/// succeeded. This also checks if the device is a non-rewinding tape
/// device.
pub fn open_lto_tape_device(
path: &str,
) -> Result<File, Error> {
let file = OpenOptions::new()
.read(true)
.write(true)
.custom_flags(libc::O_NONBLOCK)
.open(path)?;
// clear O_NONBLOCK from now on.
let flags = fcntl(file.as_raw_fd(), FcntlArg::F_GETFL)
.into_io_result()?;
let mut flags = OFlag::from_bits_truncate(flags);
flags.remove(OFlag::O_NONBLOCK);
fcntl(file.as_raw_fd(), FcntlArg::F_SETFL(flags))
.into_io_result()?;
check_tape_is_lto_tape_device(&file)
.map_err(|err| format_err!("device type check {:?} failed - {}", path, err))?;
Ok(file)
}
fn run_sg_tape_cmd(subcmd: &str, args: &[&str], fd: RawFd) -> Result<String, Error> {
let mut command = std::process::Command::new(
"/usr/lib/x86_64-linux-gnu/proxmox-backup/sg-tape-cmd");
command.args(&[subcmd]);
command.args(&["--stdin"]);
command.args(args);
let device_fd = nix::unistd::dup(fd)?;
command.stdin(unsafe { std::process::Stdio::from_raw_fd(device_fd)});
run_command(command, None)
}

445
src/tape/drive/lto/sg_tape.rs Normal file
View File

@ -0,0 +1,445 @@
use std::time::SystemTime;
use std::fs::{File, OpenOptions};
use std::os::unix::fs::OpenOptionsExt;
use std::os::unix::io::AsRawFd;
use std::path::Path;
use anyhow::{bail, format_err, Error};
use endian_trait::Endian;
use nix::fcntl::{fcntl, FcntlArg, OFlag};
use proxmox::{
sys::error::SysResult,
tools::io::ReadExt,
};
use crate::{
api2::types::{
MamAttribute,
},
tape::{
BlockRead,
BlockReadStatus,
BlockWrite,
file_formats::{
BlockedWriter,
BlockedReader,
},
drive::{
TapeAlertFlags,
Lp17VolumeStatistics,
read_mam_attributes,
read_tape_alert_flags,
read_volume_statistics,
set_encryption,
},
},
tools::sgutils2::{
SgRaw,
SenseInfo,
ScsiError,
InquiryInfo,
scsi_inquiry,
},
};
#[repr(C, packed)]
#[derive(Endian, Debug, Copy, Clone)]
pub struct ReadPositionLongPage {
flags: u8,
reserved: [u8;3],
partition_number: u32,
pub logical_object_number: u64,
pub logical_file_id: u64,
obsolete: [u8;8],
}
pub struct SgTape {
file: File,
}
impl SgTape {
const SCSI_TAPE_DEFAULT_TIMEOUT: usize = 60*2; // 2 minutes
/// Create a new instance
///
/// Uses scsi_inquiry to check the device type.
pub fn new(mut file: File) -> Result<Self, Error> {
let info = scsi_inquiry(&mut file)?;
if info.peripheral_type != 1 {
bail!("not a tape device (peripheral_type = {})", info.peripheral_type);
}
Ok(Self { file })
}
pub fn open<P: AsRef<Path>>(path: P) -> Result<SgTape, Error> {
// do not wait for media, use O_NONBLOCK
let file = OpenOptions::new()
.read(true)
.write(true)
.custom_flags(libc::O_NONBLOCK)
.open(path)?;
// then clear O_NONBLOCK
let flags = fcntl(file.as_raw_fd(), FcntlArg::F_GETFL)
.into_io_result()?;
let mut flags = OFlag::from_bits_truncate(flags);
flags.remove(OFlag::O_NONBLOCK);
fcntl(file.as_raw_fd(), FcntlArg::F_SETFL(flags))
.into_io_result()?;
Self::new(file)
}
pub fn inquiry(&mut self) -> Result<InquiryInfo, Error> {
scsi_inquiry(&mut self.file)
}
pub fn erase_media(&mut self, _fast: bool) -> Result<(), Error> {
// fixme:
unimplemented!();
}
pub fn rewind(&mut self) -> Result<(), Error> {
let mut sg_raw = SgRaw::new(&mut self.file, 16)?;
sg_raw.set_timeout(Self::SCSI_TAPE_DEFAULT_TIMEOUT);
let mut cmd = Vec::new();
cmd.extend(&[0x01, 0, 0, 0, 0, 0]); // REWIND
sg_raw.do_command(&cmd)
.map_err(|err| format_err!("rewind failed - {}", err))?;
Ok(())
}
pub fn position(&mut self) -> Result<ReadPositionLongPage, Error> {
let expected_size = std::mem::size_of::<ReadPositionLongPage>();
let mut sg_raw = SgRaw::new(&mut self.file, 32)?;
sg_raw.set_timeout(30); // use short timeout
let mut cmd = Vec::new();
cmd.extend(&[0x34, 0x06, 0, 0, 0, 0, 0, 0, 0, 0]); // READ POSITION LONG FORM
let data = sg_raw.do_command(&cmd)
.map_err(|err| format_err!("read position failed - {}", err))?;
let page = proxmox::try_block!({
if data.len() != expected_size {
bail!("got unexpected data len ({} != {}", data.len(), expected_size);
}
let mut reader = &data[..];
let page: ReadPositionLongPage = unsafe { reader.read_be_value()? };
Ok(page)
}).map_err(|err: Error| format_err!("decode position page failed - {}", err))?;
if page.partition_number != 0 {
bail!("detecthed partitioned tape - not supported");
}
println!("DATA: {:?}", page);
Ok(page)
}
pub fn current_file_number(&mut self) -> Result<u64, Error> {
let position = self.position()?;
Ok(position.logical_file_id)
}
pub fn locate(&mut self) -> Result<(), Error> {
// fixme: impl LOCATE
unimplemented!();
}
pub fn move_to_eom(&mut self) -> Result<(), Error> {
let mut sg_raw = SgRaw::new(&mut self.file, 16)?;
sg_raw.set_timeout(Self::SCSI_TAPE_DEFAULT_TIMEOUT);
let mut cmd = Vec::new();
cmd.extend(&[0x11, 0x03, 0, 0, 0, 0]); // SPACE(6) move to EOD
sg_raw.do_command(&cmd)
.map_err(|err| format_err!("move to EOD failed - {}", err))?;
Ok(())
}
pub fn space_filemarks(&mut self, count: isize) -> Result<(), Error> {
let mut sg_raw = SgRaw::new(&mut self.file, 16)?;
sg_raw.set_timeout(Self::SCSI_TAPE_DEFAULT_TIMEOUT);
let mut cmd = Vec::new();
// Use short command if possible (supported by all drives)
if (count <= 0x7fffff) && (count > -0x7fffff) {
cmd.extend(&[0x11, 0x01]); // SPACE(6) with filemarks
cmd.push(((count >> 16) & 0xff) as u8);
cmd.push(((count >> 8) & 0xff) as u8);
cmd.push((count & 0xff) as u8);
cmd.push(0); //control byte
} else {
cmd.extend(&[0x91, 0x01, 0, 0]); // SPACE(16) with filemarks
let count: i64 = count as i64;
cmd.extend(&count.to_be_bytes());
cmd.extend(&[0, 0, 0, 0]);
}
sg_raw.do_command(&cmd)
.map_err(|err| format_err!("space filemarks failed - {}", err))?;
Ok(())
}
pub fn eject(&mut self) -> Result<(), Error> {
let mut sg_raw = SgRaw::new(&mut self.file, 16)?;
sg_raw.set_timeout(Self::SCSI_TAPE_DEFAULT_TIMEOUT);
let mut cmd = Vec::new();
cmd.extend(&[0x1B, 0, 0, 0, 0, 0]); // LODA/UNLOAD HOLD=0, LOAD=0
sg_raw.do_command(&cmd)
.map_err(|err| format_err!("eject failed - {}", err))?;
Ok(())
}
pub fn load(&mut self) -> Result<(), Error> {
let mut sg_raw = SgRaw::new(&mut self.file, 16)?;
sg_raw.set_timeout(Self::SCSI_TAPE_DEFAULT_TIMEOUT);
let mut cmd = Vec::new();
cmd.extend(&[0x1B, 0, 0, 0, 0b0000_0001, 0]); // LODA/UNLOAD HOLD=0, LOAD=1
sg_raw.do_command(&cmd)
.map_err(|err| format_err!("load media failed - {}", err))?;
Ok(())
}
pub fn write_filemarks(
&mut self,
count: usize,
immediate: bool,
) -> Result<(), std::io::Error> {
if count > 255 {
proxmox::io_bail!("write_filemarks failed: got strange count '{}'", count);
}
let mut sg_raw = SgRaw::new(&mut self.file, 16)
.map_err(|err| proxmox::io_format_err!("write_filemarks failed (alloc) - {}", err))?;
sg_raw.set_timeout(Self::SCSI_TAPE_DEFAULT_TIMEOUT);
let mut cmd = Vec::new();
cmd.push(0x10);
if immediate {
cmd.push(1); // IMMED=1
} else {
cmd.push(0); // IMMED=0
}
cmd.extend(&[0, 0, count as u8]); // COUNT
cmd.push(0); // control byte
sg_raw.do_command(&cmd)
.map_err(|err| proxmox::io_format_err!("write filemark failed - {}", err))?;
Ok(())
}
// Flush tape buffers (WEOF with count 0 => flush)
pub fn sync(&mut self) -> Result<(), std::io::Error> {
self.write_filemarks(0, false)?;
Ok(())
}
pub fn test_unit_ready(&mut self) -> Result<bool, Error> {
let mut sg_raw = SgRaw::new(&mut self.file, 16)?;
sg_raw.set_timeout(30); // use short timeout
let mut cmd = Vec::new();
cmd.extend(&[0x00, 0, 0, 0, 0, 0]); // TEST UNIT READY
// fixme: check sense
sg_raw.do_command(&cmd)
.map_err(|err| format_err!("unit not ready - {}", err))?;
Ok(true)
}
pub fn wait_until_ready(&mut self) -> Result<(), Error> {
let start = SystemTime::now();
let max_wait = std::time::Duration::new(Self::SCSI_TAPE_DEFAULT_TIMEOUT as u64, 0);
loop {
match self.test_unit_ready() {
Ok(true) => return Ok(()),
_ => {
std::thread::sleep(std::time::Duration::new(1, 0));
if start.elapsed()? > max_wait {
bail!("wait_until_ready failed - got timeout");
}
}
}
}
}
/// Read Tape Alert Flags
pub fn tape_alert_flags(&mut self) -> Result<TapeAlertFlags, Error> {
read_tape_alert_flags(&mut self.file)
}
/// Read Cartridge Memory (MAM Attributes)
pub fn cartridge_memory(&mut self) -> Result<Vec<MamAttribute>, Error> {
read_mam_attributes(&mut self.file)
}
/// Read Volume Statistics
pub fn volume_statistics(&mut self) -> Result<Lp17VolumeStatistics, Error> {
return read_volume_statistics(&mut self.file);
}
pub fn set_encryption(
&mut self,
key: Option<[u8; 32]>,
) -> Result<(), Error> {
set_encryption(&mut self.file, key)
}
// Note: use alloc_page_aligned_buffer to alloc data transfer buffer
//
// Returns true if the drive reached the Logical End Of Media (early warning)
fn write_block(&mut self, data: &[u8]) -> Result<bool, std::io::Error> {
let transfer_len = data.len();
if transfer_len > 0xFFFFFF {
proxmox::io_bail!("write failed - data too large");
}
let mut sg_raw = SgRaw::new(&mut self.file, 0)
.unwrap(); // cannot fail with size 0
sg_raw.set_timeout(Self::SCSI_TAPE_DEFAULT_TIMEOUT);
let mut cmd = Vec::new();
cmd.push(0x0A); // WRITE
cmd.push(0x00); // VARIABLE SIZED BLOCKS
cmd.push(((transfer_len >> 16) & 0xff) as u8);
cmd.push(((transfer_len >> 8) & 0xff) as u8);
cmd.push((transfer_len & 0xff) as u8);
cmd.push(0); // control byte
//println!("WRITE {:?}", cmd);
//println!("WRITE {:?}", data);
sg_raw.do_out_command(&cmd, data)
.map_err(|err| proxmox::io_format_err!("write failed - {}", err))?;
// fixme: LEOM?
Ok(false)
}
fn read_block(&mut self, buffer: &mut [u8]) -> Result<BlockReadStatus, std::io::Error> {
let transfer_len = buffer.len();
if transfer_len > 0xFFFFFF {
proxmox::io_bail!("read failed - buffer too large");
}
let mut sg_raw = SgRaw::new(&mut self.file, 0)
.unwrap(); // cannot fail with size 0
sg_raw.set_timeout(Self::SCSI_TAPE_DEFAULT_TIMEOUT);
let mut cmd = Vec::new();
cmd.push(0x08); // READ
cmd.push(0x02); // VARIABLE SIZED BLOCKS, SILI=1
//cmd.push(0x00); // VARIABLE SIZED BLOCKS, SILI=0
cmd.push(((transfer_len >> 16) & 0xff) as u8);
cmd.push(((transfer_len >> 8) & 0xff) as u8);
cmd.push((transfer_len & 0xff) as u8);
cmd.push(0); // control byte
let data = match sg_raw.do_in_command(&cmd, buffer) {
Ok(data) => data,
Err(ScsiError::Sense(SenseInfo { sense_key: 0, asc: 0, ascq: 1 })) => {
return Ok(BlockReadStatus::EndOfFile);
}
Err(ScsiError::Sense(SenseInfo { sense_key: 8, asc: 0, ascq: 5 })) => {
return Ok(BlockReadStatus::EndOfStream);
}
Err(err) => {
println!("READ ERR {:?}", err);
proxmox::io_bail!("read failed - {}", err);
}
};
if data.len() != transfer_len {
proxmox::io_bail!("read failed - unexpected block len ({} != {})", data.len(), buffer.len())
}
Ok(BlockReadStatus::Ok(transfer_len))
}
pub fn open_writer(&mut self) -> BlockedWriter<SgTapeWriter> {
let writer = SgTapeWriter::new(self);
BlockedWriter::new(writer)
}
pub fn open_reader(&mut self) -> Result<Option<BlockedReader<SgTapeReader>>, std::io::Error> {
let reader = SgTapeReader::new(self);
match BlockedReader::open(reader)? {
Some(reader) => Ok(Some(reader)),
None => Ok(None),
}
}
}
pub struct SgTapeReader<'a> {
sg_tape: &'a mut SgTape,
}
impl <'a> SgTapeReader<'a> {
pub fn new(sg_tape: &'a mut SgTape) -> Self {
Self { sg_tape }
}
}
impl <'a> BlockRead for SgTapeReader<'a> {
fn read_block(&mut self, buffer: &mut [u8]) -> Result<BlockReadStatus, std::io::Error> {
self.sg_tape.read_block(buffer)
}
}
pub struct SgTapeWriter<'a> {
sg_tape: &'a mut SgTape,
_leom_sent: bool,
}
impl <'a> SgTapeWriter<'a> {
pub fn new(sg_tape: &'a mut SgTape) -> Self {
Self { sg_tape, _leom_sent: false }
}
}
impl <'a> BlockWrite for SgTapeWriter<'a> {
fn write_block(&mut self, buffer: &[u8]) -> Result<bool, std::io::Error> {
self.sg_tape.write_block(buffer)
}
fn write_filemark(&mut self) -> Result<(), std::io::Error> {
self.sg_tape.write_filemarks(1, true)
}
}

22
src/tape/drive/mod.rs
View File

@ -13,8 +13,8 @@ pub use volume_statistics::*;
mod encryption;
pub use encryption::*;
mod linux_tape;
pub use linux_tape::*;
mod lto;
pub use lto::*;
mod mam;
pub use mam::*;
@ -49,7 +49,7 @@ use crate::{
},
api2::types::{
VirtualTapeDrive,
LinuxTapeDrive,
LtoTapeDrive,
},
server::{
send_load_media_email,
@ -263,8 +263,8 @@ pub fn media_changer(
let tape = VirtualTapeDrive::deserialize(config)?;
Ok(Some((Box::new(tape), drive.to_string())))
}
"linux" => {
let drive_config = LinuxTapeDrive::deserialize(config)?;
"lto" => {
let drive_config = LtoTapeDrive::deserialize(config)?;
match drive_config.changer {
Some(ref changer_name) => {
let changer = MtxMediaChanger::with_drive_config(&drive_config)?;
@ -317,8 +317,8 @@ pub fn open_drive(
let handle = tape.open()?;
Ok(Box::new(handle))
}
"linux" => {
let tape = LinuxTapeDrive::deserialize(config)?;
"lto" => {
let tape = LtoTapeDrive::deserialize(config)?;
let handle = tape.open()?;
Ok(Box::new(handle))
}
@ -379,8 +379,8 @@ pub fn request_and_load_media(
Ok((handle, media_id))
}
"linux" => {
let drive_config = LinuxTapeDrive::deserialize(config)?;
"lto" => {
let drive_config = LtoTapeDrive::deserialize(config)?;
let label_text = label.label_text.clone();
@ -546,8 +546,8 @@ fn tape_device_path(
"virtual" => {
VirtualTapeDrive::deserialize(config)?.path
}
"linux" => {
LinuxTapeDrive::deserialize(config)?.path
"lto" => {
LtoTapeDrive::deserialize(config)?.path
}
_ => bail!("unknown drive type '{}' - internal error"),
};

51
src/tape/linux_list_drives.rs
View File

@ -12,13 +12,13 @@ use crate::{
tools::fs::scan_subdir,
};
/// List linux tape changer devices
pub fn linux_tape_changer_list() -> Vec<TapeDeviceInfo> {
lazy_static::lazy_static!{
lazy_static::lazy_static!{
static ref SCSI_GENERIC_NAME_REGEX: regex::Regex =
regex::Regex::new(r"^sg\d+$").unwrap();
}
}
/// List linux tape changer devices
pub fn linux_tape_changer_list() -> Vec<TapeDeviceInfo> {
let mut list = Vec::new();
@ -111,20 +111,15 @@ pub fn linux_tape_changer_list() -> Vec<TapeDeviceInfo> {
list
}
/// List linux tape devices (non-rewinding)
pub fn linux_tape_device_list() -> Vec<TapeDeviceInfo> {
lazy_static::lazy_static!{
static ref NST_TAPE_NAME_REGEX: regex::Regex =
regex::Regex::new(r"^nst\d+$").unwrap();
}
/// List LTO drives
pub fn lto_tape_device_list() -> Vec<TapeDeviceInfo> {
let mut list = Vec::new();
let dir_iter = match scan_subdir(
libc::AT_FDCWD,
"/sys/class/scsi_tape",
&NST_TAPE_NAME_REGEX)
"/sys/class/scsi_generic",
&SCSI_GENERIC_NAME_REGEX)
{
Err(_) => return list,
Ok(iter) => iter,
@ -138,7 +133,7 @@ pub fn linux_tape_device_list() -> Vec<TapeDeviceInfo> {
let name = item.file_name().to_str().unwrap().to_string();
let mut sys_path = PathBuf::from("/sys/class/scsi_tape");
let mut sys_path = PathBuf::from("/sys/class/scsi_generic");
sys_path.push(&name);
let device = match udev::Device::from_syspath(&sys_path) {
@ -151,6 +146,24 @@ pub fn linux_tape_device_list() -> Vec<TapeDeviceInfo> {
Some(devnum) => devnum,
};
let parent = match device.parent() {
None => continue,
Some(parent) => parent,
};
match parent.attribute_value("type") {
Some(type_osstr) => {
if type_osstr != "1" {
continue;
}
}
_ => { continue; }
}
// let mut test_path = sys_path.clone();
// test_path.push("device/scsi_tape");
// if !test_path.exists() { continue; }
let _dev_path = match device.devnode().map(Path::to_owned) {
None => continue,
Some(dev_path) => dev_path,
@ -174,7 +187,7 @@ pub fn linux_tape_device_list() -> Vec<TapeDeviceInfo> {
.and_then(|s| if let Ok(s) = s.into_string() { Some(s) } else { None })
.unwrap_or_else(|| String::from("unknown"));
let dev_path = format!("/dev/tape/by-id/scsi-{}-nst", serial);
let dev_path = format!("/dev/tape/by-id/scsi-{}-sg", serial);
if PathBuf::from(&dev_path).exists() {
list.push(TapeDeviceInfo {
@ -230,13 +243,13 @@ pub fn lookup_device_identification<'a>(
}
}
/// Make sure path is a linux tape device
/// Make sure path is a lto tape device
pub fn check_drive_path(
drives: &[TapeDeviceInfo],
path: &str,
) -> Result<(), Error> {
if lookup_device(drives, path).is_none() {
bail!("path '{}' is not a linux (non-rewinding) tape device", path);
bail!("path '{}' is not a lto SCSI-generic tape device", path);
}
Ok(())
}
@ -250,5 +263,5 @@ pub fn complete_changer_path(_arg: &str, _param: &HashMap<String, String>) -> Ve
/// List tape device paths
pub fn complete_drive_path(_arg: &str, _param: &HashMap<String, String>) -> Vec<String> {
linux_tape_device_list().iter().map(|v| v.path.clone()).collect()
lto_tape_device_list().iter().map(|v| v.path.clone()).collect()
}