04e24b14f0
This removes the "Backup Management" first level heading in the docs, and either uses the sub headings contained within it as first level headings, or groups previous sections logically under new headings. The administration-guide.rst file is also removed. Its contents are instead separated into various files, that relate to their respective first level heading. Signed-off-by: Dylan Whyte <d.whyte@proxmox.com>
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ReStructuredText
245 lines
12 KiB
ReStructuredText
Storage
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=======
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Disk Management
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---------------
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.. image:: images/screenshots/pbs-gui-disks.png
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:align: right
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:alt: List of disks
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Proxmox Backup Server comes with a set of disk utilities, which are
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accessed using the ``disk`` subcommand. This subcommand allows you to initialize
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disks, create various filesystems, and get information about the disks.
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To view the disks connected to the system, navigate to **Administration ->
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Disks** in the web interface or use the ``list`` subcommand of
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``disk``:
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.. code-block:: console
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# proxmox-backup-manager disk list
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┌──────┬────────┬─────┬───────────┬─────────────┬───────────────┬─────────┬────────┐
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│ name │ used │ gpt │ disk-type │ size │ model │ wearout │ status │
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╞══════╪════════╪═════╪═══════════╪═════════════╪═══════════════╪═════════╪════════╡
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│ sda │ lvm │ 1 │ hdd │ 34359738368 │ QEMU_HARDDISK │ - │ passed │
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├──────┼────────┼─────┼───────────┼─────────────┼───────────────┼─────────┼────────┤
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│ sdb │ unused │ 1 │ hdd │ 68719476736 │ QEMU_HARDDISK │ - │ passed │
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├──────┼────────┼─────┼───────────┼─────────────┼───────────────┼─────────┼────────┤
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│ sdc │ unused │ 1 │ hdd │ 68719476736 │ QEMU_HARDDISK │ - │ passed │
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└──────┴────────┴─────┴───────────┴─────────────┴───────────────┴─────────┴────────┘
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To initialize a disk with a new GPT, use the ``initialize`` subcommand:
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.. code-block:: console
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# proxmox-backup-manager disk initialize sdX
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.. image:: images/screenshots/pbs-gui-disks-dir-create.png
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:align: right
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:alt: Create a directory
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You can create an ``ext4`` or ``xfs`` filesystem on a disk using ``fs
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create``, or by navigating to **Administration -> Disks -> Directory** in the
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web interface and creating one from there. The following command creates an
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``ext4`` filesystem and passes the ``--add-datastore`` parameter, in order to
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automatically create a datastore on the disk (in this case ``sdd``). This will
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create a datastore at the location ``/mnt/datastore/store1``:
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.. code-block:: console
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# proxmox-backup-manager disk fs create store1 --disk sdd --filesystem ext4 --add-datastore true
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.. image:: images/screenshots/pbs-gui-disks-zfs-create.png
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:align: right
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:alt: Create ZFS
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You can also create a ``zpool`` with various raid levels from **Administration
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-> Disks -> Zpool** in the web interface, or by using ``zpool create``. The command
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below creates a mirrored ``zpool`` using two disks (``sdb`` & ``sdc``) and
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mounts it on the root directory (default):
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.. code-block:: console
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# proxmox-backup-manager disk zpool create zpool1 --devices sdb,sdc --raidlevel mirror
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.. note:: You can also pass the ``--add-datastore`` parameter here, to automatically
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create a datastore from the disk.
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You can use ``disk fs list`` and ``disk zpool list`` to keep track of your
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filesystems and zpools respectively.
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Proxmox Backup Server uses the package smartmontools. This is a set of tools
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used to monitor and control the S.M.A.R.T. system for local hard disks. If a
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disk supports S.M.A.R.T. capability, and you have this enabled, you can
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display S.M.A.R.T. attributes from the web interface or by using the command:
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.. code-block:: console
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# proxmox-backup-manager disk smart-attributes sdX
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.. note:: This functionality may also be accessed directly through the use of
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the ``smartctl`` command, which comes as part of the smartmontools package
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(see ``man smartctl`` for more details).
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.. _datastore_intro:
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:term:`DataStore`
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-----------------
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A datastore refers to a location at which backups are stored. The current
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implementation uses a directory inside a standard unix file system (``ext4``,
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``xfs`` or ``zfs``) to store the backup data.
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Datastores are identified by a simple *ID*. You can configure this
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when setting up the datastore. The configuration information for datastores
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is stored in the file ``/etc/proxmox-backup/datastore.cfg``.
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.. note:: The `File Layout`_ requires the file system to support at least *65538*
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subdirectories per directory. That number comes from the 2\ :sup:`16`
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pre-created chunk namespace directories, and the ``.`` and ``..`` default
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directory entries. This requirement excludes certain filesystems and
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filesystem configuration from being supported for a datastore. For example,
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``ext3`` as a whole or ``ext4`` with the ``dir_nlink`` feature manually disabled.
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Datastore Configuration
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~~~~~~~~~~~~~~~~~~~~~~~
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.. image:: images/screenshots/pbs-gui-datastore.png
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:align: right
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:alt: Datastore Overview
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You can configure multiple datastores. Minimum one datastore needs to be
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configured. The datastore is identified by a simple *name* and points to a
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directory on the filesystem. Each datastore also has associated retention
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settings of how many backup snapshots for each interval of ``hourly``,
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``daily``, ``weekly``, ``monthly``, ``yearly`` as well as a time-independent
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number of backups to keep in that store. :ref:`Pruning <pruning>` and
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:ref:`garbage collection <garbage-collection>` can also be configured to run
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periodically based on a configured schedule (see :ref:`calendar-events`) per datastore.
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Creating a Datastore
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^^^^^^^^^^^^^^^^^^^^
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.. image:: images/screenshots/pbs-gui-datastore-create-general.png
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:align: right
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:alt: Create a datastore
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You can create a new datastore from the web GUI, by navigating to **Datastore** in
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the menu tree and clicking **Create**. Here:
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* *Name* refers to the name of the datastore
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* *Backing Path* is the path to the directory upon which you want to create the
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datastore
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* *GC Schedule* refers to the time and intervals at which garbage collection
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runs
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* *Prune Schedule* refers to the frequency at which pruning takes place
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* *Prune Options* set the amount of backups which you would like to keep (see :ref:`Pruning <pruning>`).
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Alternatively you can create a new datastore from the command line. The
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following command creates a new datastore called ``store1`` on :file:`/backup/disk1/store1`
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.. code-block:: console
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# proxmox-backup-manager datastore create store1 /backup/disk1/store1
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Managing Datastores
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^^^^^^^^^^^^^^^^^^^
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To list existing datastores from the command line run:
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.. code-block:: console
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# proxmox-backup-manager datastore list
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┌────────┬──────────────────────┬─────────────────────────────┐
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│ name │ path │ comment │
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╞════════╪══════════════════════╪═════════════════════════════╡
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│ store1 │ /backup/disk1/store1 │ This is my default storage. │
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└────────┴──────────────────────┴─────────────────────────────┘
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You can change the garbage collection and prune settings of a datastore, by
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editing the datastore from the GUI or by using the ``update`` subcommand. For
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example, the below command changes the garbage collection schedule using the
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``update`` subcommand and prints the properties of the datastore with the
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``show`` subcommand:
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.. code-block:: console
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# proxmox-backup-manager datastore update store1 --gc-schedule 'Tue 04:27'
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# proxmox-backup-manager datastore show store1
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┌────────────────┬─────────────────────────────┐
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│ Name │ Value │
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╞════════════════╪═════════════════════════════╡
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│ name │ store1 │
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├────────────────┼─────────────────────────────┤
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│ path │ /backup/disk1/store1 │
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├────────────────┼─────────────────────────────┤
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│ comment │ This is my default storage. │
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├────────────────┼─────────────────────────────┤
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│ gc-schedule │ Tue 04:27 │
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├────────────────┼─────────────────────────────┤
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│ keep-last │ 7 │
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├────────────────┼─────────────────────────────┤
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│ prune-schedule │ daily │
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└────────────────┴─────────────────────────────┘
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Finally, it is possible to remove the datastore configuration:
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.. code-block:: console
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# proxmox-backup-manager datastore remove store1
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.. note:: The above command removes only the datastore configuration. It does
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not delete any data from the underlying directory.
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File Layout
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^^^^^^^^^^^
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After creating a datastore, the following default layout will appear:
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.. code-block:: console
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# ls -arilh /backup/disk1/store1
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276493 -rw-r--r-- 1 backup backup 0 Jul 8 12:35 .lock
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276490 drwxr-x--- 1 backup backup 1064960 Jul 8 12:35 .chunks
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`.lock` is an empty file used for process locking.
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The `.chunks` directory contains folders, starting from `0000` and taking hexadecimal values until `ffff`. These
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directories will store the chunked data after a backup operation has been executed.
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.. code-block:: console
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# ls -arilh /backup/disk1/store1/.chunks
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545824 drwxr-x--- 2 backup backup 4.0K Jul 8 12:35 ffff
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545823 drwxr-x--- 2 backup backup 4.0K Jul 8 12:35 fffe
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415621 drwxr-x--- 2 backup backup 4.0K Jul 8 12:35 fffd
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415620 drwxr-x--- 2 backup backup 4.0K Jul 8 12:35 fffc
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353187 drwxr-x--- 2 backup backup 4.0K Jul 8 12:35 fffb
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344995 drwxr-x--- 2 backup backup 4.0K Jul 8 12:35 fffa
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144079 drwxr-x--- 2 backup backup 4.0K Jul 8 12:35 fff9
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144078 drwxr-x--- 2 backup backup 4.0K Jul 8 12:35 fff8
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144077 drwxr-x--- 2 backup backup 4.0K Jul 8 12:35 fff7
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...
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403180 drwxr-x--- 2 backup backup 4.0K Jul 8 12:35 000c
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403179 drwxr-x--- 2 backup backup 4.0K Jul 8 12:35 000b
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403177 drwxr-x--- 2 backup backup 4.0K Jul 8 12:35 000a
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402530 drwxr-x--- 2 backup backup 4.0K Jul 8 12:35 0009
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402513 drwxr-x--- 2 backup backup 4.0K Jul 8 12:35 0008
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402509 drwxr-x--- 2 backup backup 4.0K Jul 8 12:35 0007
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276509 drwxr-x--- 2 backup backup 4.0K Jul 8 12:35 0006
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276508 drwxr-x--- 2 backup backup 4.0K Jul 8 12:35 0005
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276507 drwxr-x--- 2 backup backup 4.0K Jul 8 12:35 0004
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276501 drwxr-x--- 2 backup backup 4.0K Jul 8 12:35 0003
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276499 drwxr-x--- 2 backup backup 4.0K Jul 8 12:35 0002
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276498 drwxr-x--- 2 backup backup 4.0K Jul 8 12:35 0001
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276494 drwxr-x--- 2 backup backup 4.0K Jul 8 12:35 0000
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276489 drwxr-xr-x 3 backup backup 4.0K Jul 8 12:35 ..
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276490 drwxr-x--- 1 backup backup 1.1M Jul 8 12:35 .
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