82 lines
3.5 KiB
ReStructuredText
82 lines
3.5 KiB
ReStructuredText
Maintenance Tasks
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=================
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Pruning & Garbage Collection
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----------------------------
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Pruning can be scheduled on both a backup group and a datastore level. To access
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pruning functionality for a specific backup group, you can use the prune command
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line option discussed in :ref:`backup-pruning`, or navigate to the **Content**
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tab of the datastore and click the scissors icon in the **Actions** column of
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the relevant backup group. To prune on a datastore level, scheduling options can
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be found under the **Prune & GC** tab of the datastore. Here you can set
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retention settings and edit the interval at which pruning takes place.
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.. image:: images/screenshots/pbs-gui-datastore-prunegc.png
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:align: right
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:alt: Prune and garbage collection options
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You can monitor and run :ref:`garbage collection <garbage-collection>` on the
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Proxmox Backup Server using the ``garbage-collection`` subcommand of
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``proxmox-backup-manager``. You can use the ``start`` subcommand to manually
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start garbage collection on an entire datastore and the ``status`` subcommand to
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see attributes relating to the :ref:`garbage collection <garbage-collection>`.
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This functionality can also be accessed in the GUI, by navigating to **Prune &
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GC** from the top panel. From here, you can edit the schedule at which garbage
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collection runs and manually start the operation.
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.. _verification:
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Verification
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------------
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.. image:: images/screenshots/pbs-gui-datastore-verifyjob-add.png
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:align: right
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:alt: Adding a verify job
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Proxmox Backup offers various verification options to ensure that backup data is
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intact. Verification is generally carried out through the creation of verify
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jobs. These are scheduled tasks that run verification at a given interval (see
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:ref:`calendar-events`). With these, you can set whether already verified
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snapshots are ignored, as well as set a time period, after which verified jobs
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are checked again. The interface for creating verify jobs can be found under the
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**Verify Jobs** tab of the datastore.
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.. Note:: It is recommended that you reverify all backups at least monthly, even
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if a previous verification was successful. This is becuase physical drives
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are susceptible to damage over time, which can cause an old, working backup
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to become corrupted in a process known as `bit rot/data degradation
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<https://en.wikipedia.org/wiki/Data_degradation>`_. It is good practice to
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have a regularly recurring (hourly/daily) verification job, which checks new
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and expired backups, then another weekly/monthly job that will reverify
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everything. This way, there will be no surprises when it comes to restoring
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data.
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Aside from using verify jobs, you can also run verification manually on entire
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datastores, backup groups, or snapshots. To do this, navigate to the **Content**
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tab of the datastore and either click *Verify All*, or select the *V.* icon from
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the *Actions* column in the table.
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.. _maintenance_notification:
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Notifications
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-------------
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Proxmox Backup Server can send you notification emails about automatically
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scheduled verification, garbage-collection and synchronization tasks results.
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By default, notifications are send to the email address configured for the
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`root@pam` user. You can set that user for each datastore.
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You can also change the level of notification received per task type, the
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following options are available:
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* Always: send a notification for any scheduled task, independent of the
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outcome
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* Errors: send a notification for any scheduled task resulting in an error
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* Never: do not send any notification at all
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