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docs: Mention our new user space tape driver, adopt device path names

This commit is contained in:
Dietmar Maurer 2021-04-08 09:50:09 +02:00
parent 09acf0a70d
commit ee9fa953de
1 changed files with 14 additions and 10 deletions
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24
docs/tape-backup.rst
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@ -69,12 +69,16 @@ Supported Hardware
------------------
Proxmox Backup Server supports `Linear Tape-Open`_ generation 4 (LTO-4)
or later. In general, all SCSI-2 tape drives supported by the Linux
kernel should work, but features like hardware encryption need LTO-4
or later.
Tape changing is carried out using the Linux 'mtx' command line
tool, so any changer device supported by this tool should work.
Tape changing is carried out using the SCSI Medium Changer protocol,
so all modern tape libraries should work.
.. Note:: We use a custom user space tape driver written in Rust_. This
driver directly communicates with the tape drive using the SCSI
generic interface. This may have bad side effects to the old Linux
kernel tape driver, so you should not use that driver while using
Proxmox tape backup.
Drive Performance
@ -311,7 +315,7 @@ of available tape drives using:
┌────────────────────────────────┬────────┬─────────────┬────────┐
│ path │ vendor │ model │ serial │
╞════════════════════════════════╪════════╪═════════════╪════════╡
│ /dev/tape/by-id/scsi-12345-nst │ IBM │ ULT3580-TD4 │ 12345 │
│ /dev/tape/by-id/scsi-12345-sg │ IBM │ ULT3580-TD4 │ 12345 │
└────────────────────────────────┴────────┴─────────────┴────────┘
In order to use that drive with Proxmox, you need to create a
@ -319,10 +323,10 @@ configuration entry:
.. code-block:: console
# proxmox-tape drive create mydrive --path /dev/tape/by-id/scsi-12345-nst
# proxmox-tape drive create mydrive --path /dev/tape/by-id/scsi-12345-sg
.. Note:: Please use the persistent device path names from inside
``/dev/tape/by-id/``. Names like ``/dev/nst0`` may point to a
``/dev/tape/by-id/``. Names like ``/dev/sg0`` may point to a
different device after reboot, and that is not what you want.
If you have a tape library, you also need to set the associated
@ -346,7 +350,7 @@ You can display the final configuration with:
╞═════════╪════════════════════════════════╡
│ name │ mydrive │
├─────────┼────────────────────────────────┤
│ path │ /dev/tape/by-id/scsi-12345-nst │
│ path │ /dev/tape/by-id/scsi-12345-sg │
├─────────┼────────────────────────────────┤
│ changer │ sl3 │
└─────────┴────────────────────────────────┘
@ -362,7 +366,7 @@ To list all configured drives use:
┌──────────┬────────────────────────────────┬─────────┬────────┬─────────────┬────────┐
│ name │ path │ changer │ vendor │ model │ serial │
╞══════════╪════════════════════════════════╪═════════╪════════╪═════════════╪════════╡
│ mydrive │ /dev/tape/by-id/scsi-12345-nst │ sl3 │ IBM │ ULT3580-TD4 │ 12345 │
│ mydrive │ /dev/tape/by-id/scsi-12345-sg │ sl3 │ IBM │ ULT3580-TD4 │ 12345 │
└──────────┴────────────────────────────────┴─────────┴────────┴─────────────┴────────┘
The Vendor, Model and Serial number are auto detected, but only shown
@ -499,7 +503,7 @@ one media pool, so a job only uses tapes from that pool.
will be double encrypted.
The password protected key is stored on each medium, so that it is
possbible to `restore the key <tape_restore_encryption_key_>`_ using
possbible to `restore the key <tape_restore_encryption_key_>`_ using
the password. Please make sure to remember the password, in case
you need to restore the key.