mirror of
https://github.com/retspen/webvirtcloud
synced 2024-12-25 15:45:23 +00:00
external snapshot implementation
This commit is contained in:
parent
ad9f1db643
commit
fd6b2ec4bf
4 changed files with 315 additions and 7 deletions
101
instances/templates/instances/snapshots_tab.html
Normal file → Executable file
101
instances/templates/instances/snapshots_tab.html
Normal file → Executable file
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@ -13,6 +13,16 @@
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{% trans "Manage Snapshots" %}
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{% trans "Manage Snapshots" %}
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</button>
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</button>
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</li>
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</li>
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<li class="nav-item" role="presentation">
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<button class="nav-link" data-bs-toggle="tab" data-bs-target="#externalSnapshot" type="button" role="tab" aria-controls="externalSnapshot" aria-selected="false">
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External Snapshot
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</button>
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</li>
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<li class="nav-item" role="presentation">
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<button class="nav-link" data-bs-toggle="tab" data-bs-target="#manageExternalSnapshots" type="button" role="tab" aria-controls="manageExternalSnapshots" aria-selected="false">
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Manage External Snapshots
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</button>
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</li>
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</ul>
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</ul>
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<!-- Tab panes -->
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<!-- Tab panes -->
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<div class="tab-content">
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<div class="tab-content">
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@ -29,7 +39,11 @@
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<input type="text" class="form-control form-control-lg" name="name" placeholder="{% trans "Snapshot Name" %}" maxlength="14">
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<input type="text" class="form-control form-control-lg" name="name" placeholder="{% trans "Snapshot Name" %}" maxlength="14">
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<span class="input-group-text">|</span>
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<span class="input-group-text">|</span>
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<input type="text" class="form-control form-control-lg" name="description" placeholder="{% trans "Snapshot Description" %}" maxlength="45">
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<input type="text" class="form-control form-control-lg" name="description" placeholder="{% trans "Snapshot Description" %}" maxlength="45">
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<input type="submit" class="btn btn-lg btn-success float-end" name="snapshot" value="{% trans "Take Snapshot" %}" onclick="showPleaseWaitDialog();">
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{% if external_snapshots|length > 0 %}
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<input type="submit" class="btn btn-lg btn-success disabled float-end" name="snapshot" value="{% trans "Take Snapshot" %}">
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{% else %}
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<input type="submit" class="btn btn-lg btn-success float-end" name="snapshot" value="{% trans "Take Snapshot" %}" onclick="showPleaseWaitDialog();">
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{% endif %}
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</div>
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</div>
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</form>
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</form>
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<div class="clearfix"></div>
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<div class="clearfix"></div>
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@ -56,11 +70,11 @@
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{% csrf_token %}
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{% csrf_token %}
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<input type="hidden" name="name" value="{{ snap.name }}">
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<input type="hidden" name="name" value="{{ snap.name }}">
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{% if instance.status == 5 %}
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{% if instance.status == 5 %}
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<button type="submit" class="btn btn-sm btn-secondary" name="revert_snapshot" title="{% trans 'Revert to this Snapshot' %}" onclick="return confirm('Are you sure?')">
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<button type="submit" class="btn btn-sm btn-primary" name="revert_snapshot" title="{% trans 'Revert to this Snapshot' %}" onclick="return confirm('Are you sure?')">
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<span class="fa fa-download"></span>
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<span class="fa fa-download"></span>
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</button>
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</button>
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{% else %}
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{% else %}
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<button type="button" class="btn btn-sm btn-secondary disabled"
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<button type="button" class="btn btn-sm btn-primary disabled"
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title="{% trans "To restore snapshots you need Power Off the instance." %}">
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title="{% trans "To restore snapshots you need Power Off the instance." %}">
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<span class="fa fa-download"></span>
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<span class="fa fa-download"></span>
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</button>
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</button>
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@ -84,5 +98,86 @@
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<p>{% trans "You do not have any snapshots" %}</p>
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<p>{% trans "You do not have any snapshots" %}</p>
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{% endif %}
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{% endif %}
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</div>
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</div>
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<div role="tabpanel" class="tab-pane tab-pane-bordered" id="externalSnapshot">
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{% if instance.status != 5 %}
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<p>You can get external snapshots within this tab.</p>
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<p class="text-primary">External snapshots are experimental in this stage, use it if you know what you are doing.</p>
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{% else %}
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<p>Create an external snapshot</p>
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{% endif %}
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<p class="text-danger">Give your External Snapshot a <b>distinctive description</b> so it wouldn't get mixed with other snapshots.</p>
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<form action="{% url 'instances:create_external_snapshot' instance.id %}" method="post" role="form" aria-label="Create snapshot form">
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{% csrf_token %}
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<div class="mb-3" style="white-space:pre-line">
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<input type="text" class="form-control form-control-lg" name="name" placeholder="{% trans "Snapshot Name" %}" maxlength="14">
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<input type="text" class="form-control form-control-lg" name="description" placeholder="{% trans "Snapshot Description" %}" maxlength="45">
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{% if external_snapshots|length > 0 or instance.snapshots|length > 0 %}
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<p class="text-danger">WebVirtCloud supports only one External Snapshot at the moment.</p>
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<input type="submit" class="btn btn-lg btn-success disabled float-end" name="snapshot" value="{% trans "Take Snapshot" %}">
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{% else %}
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<input type="submit" class="btn btn-lg btn-success float-end" name="snapshot" value="{% trans "Take Snapshot" %}" onclick="showPleaseWaitDialog();">
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{% endif %}
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</div>
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</form>
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<div class="clearfix"></div>
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</div>
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<div role="tabpanel" class="tab-pane tab-pane-bordered" id="manageExternalSnapshots">
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{% if external_snapshots %}
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<div class="table-responsive">
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<table class="table">
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<thead>
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<th scope="col">Name</th>
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<th scope="col">Date</th>
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<th scope="col">Description</th>
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<th scope="colgroup" colspan="2">{% trans "Action" %}</th>
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</thead>
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<tbody>
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{% for external_snapshot in external_snapshots %}
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<tr>
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{% for snapshot_cols in external_snapshot %}
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<td>{{snapshot_cols}}</td>
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{% endfor %}
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<td style="width:30px;">
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<form action="{% url 'instances:revert_external_snapshot' instance.id %}" method="post" role="form" aria-label="Restore external snapshot form">
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{% csrf_token %}
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<input type="hidden" name="name" value="{{ external_snapshot.0 }}">
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<input type="hidden" name="date" value="{{ external_snapshot.1 }}">
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<input type="hidden" name="desc" value="{{ external_snapshot.2 }}">
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{% if instance.status == 5 %}
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<button type="submit" class="btn btn-sm btn-primary" name="revert_external_snapshot" title="{% trans 'Revert to this Snapshot' %}" onclick="return confirm('You are going to lose your unsaved work by reverting to this snapshot state. Are you sure?')">
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<span class="fa fa-download"></span>
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</button>
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{% else %}
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<button type="button" class="btn btn-sm btn-primary disabled"
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title="{% trans "To restore snapshots you need Power Off the instance." %}">
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<span class="fa fa-download"></span>
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</button>
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{% endif %}
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</form>
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</td>
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<td style="width:30px;">
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<form action="{% url 'instances:delete_external_snapshot' instance.id %}" method="post" role="form" aria-label="Delete external snapshot form">{% csrf_token %}
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<input type="hidden" name="name" value="{{ external_snapshot.0 }}">
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{% if instance.status != 5 %}
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<button type="submit" class="btn btn-sm btn-danger" name="delete_external_snapshot" title="{% trans 'Delete Snapshot' %}" onclick="return confirm('You are about to delete this snapshot and merge it with base image. Are you sure?')">
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{% icon 'trash' %}
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</button>
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{% else %}
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<button type="submit" class="btn btn-sm btn-danger disabled" title="{% trans 'Delete Snapshot' %}">
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{% icon 'trash' %}
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</button>
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{% endif %}
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</form>
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</td>
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</tr>
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{% endfor %}
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</tbody>
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</table>
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</div>
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{% else%}
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<p>{% trans "You do not have any snapshots" %}</p>
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{% endif %}
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</div>
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</div>
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</div>
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</div>
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</div>
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3
instances/urls.py
Normal file → Executable file
3
instances/urls.py
Normal file → Executable file
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@ -39,6 +39,9 @@ urlpatterns = [
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path("<int:pk>/snapshot/", views.snapshot, name="snapshot"),
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path("<int:pk>/snapshot/", views.snapshot, name="snapshot"),
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path("<int:pk>/delete_snapshot/", views.delete_snapshot, name="delete_snapshot"),
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path("<int:pk>/delete_snapshot/", views.delete_snapshot, name="delete_snapshot"),
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path("<int:pk>/revert_snapshot/", views.revert_snapshot, name="revert_snapshot"),
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path("<int:pk>/revert_snapshot/", views.revert_snapshot, name="revert_snapshot"),
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path("<int:pk>/create_external_snapshot/", views.create_external_snapshot, name="create_external_snapshot"),
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path("<int:pk>/revert_external_snapshot/", views.revert_external_snapshot, name="revert_external_snapshot"),
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path("<int:pk>/delete_external_snapshot/", views.delete_external_snapshot, name="delete_external_snapshot"),
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path("<int:pk>/set_vcpu/", views.set_vcpu, name="set_vcpu"),
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path("<int:pk>/set_vcpu/", views.set_vcpu, name="set_vcpu"),
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path("<int:pk>/set_vcpu_hotplug/", views.set_vcpu_hotplug, name="set_vcpu_hotplug"),
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path("<int:pk>/set_vcpu_hotplug/", views.set_vcpu_hotplug, name="set_vcpu_hotplug"),
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path("<int:pk>/set_autostart/", views.set_autostart, name="set_autostart"),
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path("<int:pk>/set_autostart/", views.set_autostart, name="set_autostart"),
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65
instances/views.py
Normal file → Executable file
65
instances/views.py
Normal file → Executable file
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@ -146,7 +146,9 @@ def instance(request, pk):
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instance.drbd = drbd_status(request, pk)
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instance.drbd = drbd_status(request, pk)
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instance.save()
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instance.save()
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return render(request, "instance.html", locals())
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external_snapshots = get_external_snapshots(request,pk)
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return render(request, "instance.html", locals(),)
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def status(request, pk):
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def status(request, pk):
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@ -1014,6 +1016,67 @@ def revert_snapshot(request, pk):
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addlogmsg(request.user.username, instance.compute.name, instance.name, msg)
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addlogmsg(request.user.username, instance.compute.name, instance.name, msg)
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return redirect(request.META.get("HTTP_REFERER") + "#managesnapshot")
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return redirect(request.META.get("HTTP_REFERER") + "#managesnapshot")
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def create_external_snapshot(request, pk):
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instance = get_instance(request.user, pk)
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allow_admin_or_not_template = (
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request.user.is_superuser or request.user.is_staff or not instance.is_template
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)
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if allow_admin_or_not_template and request.user.has_perm(
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"instances.snapshot_instances"
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):
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name = request.POST.get("name", "")
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desc = request.POST.get("description", "")
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instance.proxy.create_external_snapshot(name, instance, desc=desc)
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#msg = _("Create snapshot: %(snap)s") % {"snap": name}
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#addlogmsg(request.user.username, instance.compute.name, instance.name, msg)
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return redirect(request.META.get("HTTP_REFERER") + "#manageExternalSnapshots")
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def get_external_snapshots(request, pk):
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instance = get_instance(request.user, pk)
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allow_admin_or_not_template = (
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request.user.is_superuser or request.user.is_staff or not instance.is_template
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)
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if allow_admin_or_not_template and request.user.has_perm(
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"instances.snapshot_instances"
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):
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external_snapshots = instance.proxy.get_external_snapshots()
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#msg = _("Create snapshot: %(snap)s") % {"snap": name}
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#addlogmsg(request.user.username, instance.compute.name, instance.name, msg)
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return external_snapshots
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def revert_external_snapshot(request, pk):
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instance = get_instance(request.user, pk)
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allow_admin_or_not_template = (
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request.user.is_superuser or request.user.is_staff or not instance.is_template
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)
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if allow_admin_or_not_template and request.user.has_perm(
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"instances.snapshot_instances"
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):
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name = request.POST.get("name", "")
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date = request.POST.get("date", "")
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desc = request.POST.get("desc", "")
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instance.proxy.revert_external_snapshot(name, instance, date, desc)
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#msg = _("Create snapshot: %(snap)s") % {"snap": name}
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#addlogmsg(request.user.username, instance.compute.name, instance.name, msg)
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return redirect(request.META.get("HTTP_REFERER") + "#manageExternalSnapshots")
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def delete_external_snapshot(request, pk):
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instance = get_instance(request.user, pk)
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allow_admin_or_not_template = (
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request.user.is_superuser or request.user.is_staff or not instance.is_template
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)
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if allow_admin_or_not_template and request.user.has_perm(
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"instances.snapshot_instances"
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):
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name = request.POST.get("name", "")
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instance.proxy.delete_external_snapshot(name, instance)
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#msg = _("Create snapshot: %(snap)s") % {"snap": name}
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#addlogmsg(request.user.username, instance.compute.name, instance.name, msg)
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return redirect(request.META.get("HTTP_REFERER") + "#manageExternalSnapshots")
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@superuser_only
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@superuser_only
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def set_vcpu(request, pk):
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def set_vcpu(request, pk):
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@ -2,6 +2,7 @@ import contextlib
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import json
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import json
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import os.path
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import os.path
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import time
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import time
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import subprocess
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try:
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try:
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from libvirt import (
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from libvirt import (
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@ -18,6 +19,10 @@ try:
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VIR_MIGRATE_POSTCOPY,
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VIR_MIGRATE_POSTCOPY,
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VIR_MIGRATE_UNDEFINE_SOURCE,
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VIR_MIGRATE_UNDEFINE_SOURCE,
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VIR_MIGRATE_UNSAFE,
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VIR_MIGRATE_UNSAFE,
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VIR_DOMAIN_SNAPSHOT_CREATE_DISK_ONLY,
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VIR_DOMAIN_SNAPSHOT_DELETE_METADATA_ONLY,
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VIR_DOMAIN_SNAPSHOT_LIST_INTERNAL,
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VIR_DOMAIN_SNAPSHOT_LIST_EXTERNAL,
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libvirtError,
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libvirtError,
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)
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)
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from libvirt_qemu import VIR_DOMAIN_QEMU_AGENT_COMMAND_DEFAULT, qemuAgentCommand
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from libvirt_qemu import VIR_DOMAIN_QEMU_AGENT_COMMAND_DEFAULT, qemuAgentCommand
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@ -34,7 +39,6 @@ from vrtManager import util
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from vrtManager.connection import wvmConnect
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from vrtManager.connection import wvmConnect
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from vrtManager.storage import wvmStorage, wvmStorages
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from vrtManager.storage import wvmStorage, wvmStorages
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class wvmInstances(wvmConnect):
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class wvmInstances(wvmConnect):
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def get_instance_status(self, name):
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def get_instance_status(self, name):
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inst = self.get_instance(name)
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inst = self.get_instance(name)
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@ -1283,9 +1287,152 @@ class wvmInstance(wvmConnect):
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)
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)
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self._defineXML(xml_temp)
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self._defineXML(xml_temp)
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def get_snapshot(self):
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def create_external_snapshot(self, name, instance, date=None, desc=None):
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if self.instance.isActive() == False:
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result = self.instance.create()
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if result < 0:
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return 0
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creation_time = time.time()
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state = "shutoff" if self.get_status() == 5 else "running"
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xml = """<domainsnapshot>
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<name>%s</name>
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<description>%s</description>
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<state>%s</state>
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<creationTime>%d</creationTime>""" % (
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name,
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desc,
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state,
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creation_time,
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)
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self.change_snapshot_xml()
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xml += self._XMLDesc(VIR_DOMAIN_XML_SECURE)
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xml += """<active>0</active>
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</domainsnapshot>"""
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#
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# flag number for libvirt.VIR_DOMAIN_SNAPSHOT_CREATE_DISK_ONLY
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# is 16 (0x10; 1 << 4)
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#
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self._snapshotCreateXML(xml, VIR_DOMAIN_SNAPSHOT_CREATE_DISK_ONLY)
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tree = ElementTree.fromstring(self._XMLDesc(0))
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for disks in tree.findall("devices/disk"):
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if disks.get('device') == "disk":
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backingStore = disks.find("backingStore")
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if backingStore is not None:
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||||||
|
temp_backing_file = backingStore.find('source').get('file')
|
||||||
|
vol_base = self.get_volume_by_path(temp_backing_file)
|
||||||
|
pool = vol_base.storagePoolLookupByVolume()
|
||||||
|
pool.refresh(0)
|
||||||
|
|
||||||
|
def get_external_snapshots(self):
|
||||||
|
external_snapshots = []
|
||||||
|
temp_snapshots = self.get_snapshot(VIR_DOMAIN_SNAPSHOT_LIST_EXTERNAL)
|
||||||
|
for temp_snapshot in temp_snapshots:
|
||||||
|
external_snapshot = []
|
||||||
|
external_snapshot.append(temp_snapshot['name'])
|
||||||
|
external_snapshot.append(temp_snapshot['date'])
|
||||||
|
external_snapshot.append(temp_snapshot['description'])
|
||||||
|
external_snapshots.append(external_snapshot)
|
||||||
|
return external_snapshots
|
||||||
|
|
||||||
|
def delete_external_snapshot(self, name, instance):
|
||||||
|
|
||||||
|
base_xml = ElementTree.fromstring(self._XMLDesc(0))
|
||||||
|
for disk in base_xml.findall('devices/disk'):
|
||||||
|
if disk.get('device') == 'disk':
|
||||||
|
backingStore = disk.find('backingStore')
|
||||||
|
if backingStore is not None:
|
||||||
|
if backingStore.find('source') is not None:
|
||||||
|
target_dev = disk.find('target').get('dev')
|
||||||
|
backing_file = backingStore.find('source').get('file')
|
||||||
|
source_file = disk.find('source').get('file')
|
||||||
|
self.instance.blockCommit(target_dev, backing_file, source_file, flags=4|2)
|
||||||
|
while True:
|
||||||
|
info = self.instance.blockJobInfo(target_dev, 0)
|
||||||
|
if info.get('cur') == info.get('end'):
|
||||||
|
self.instance.blockJobAbort(target_dev,flags=2)
|
||||||
|
break
|
||||||
|
|
||||||
|
snap = self.instance.snapshotLookupByName(name, 0)
|
||||||
|
snapXML = ElementTree.fromstring(snap.getXMLDesc(0))
|
||||||
|
disks = []
|
||||||
|
for disk_backup in snapXML.findall('inactiveDomain/devices/disk'):
|
||||||
|
if disk_backup.get('device') == 'disk':
|
||||||
|
disk_dict = {}
|
||||||
|
if disk_backup.find('source') is not None:
|
||||||
|
disk_dict['backing_file'] = disk_backup.find('source').get('file')
|
||||||
|
if disk_backup.find('driver') is not None:
|
||||||
|
disk_dict['driver_name'] = disk_backup.find('driver').get('name')
|
||||||
|
disk_dict['driver_type'] = disk_backup.find('driver').get('type')
|
||||||
|
if disk_backup.find('target') is not None:
|
||||||
|
disk_dict['target_dev'] = disk_backup.find('target').get('dev')
|
||||||
|
disk_dict['target_bus'] = disk_backup.find('target').get('bus')
|
||||||
|
if disk_backup.find('boot') is not None:
|
||||||
|
disk_dict['boot_order'] = disk_backup.find('boot').get('order')
|
||||||
|
disks.append(disk_dict)
|
||||||
|
|
||||||
|
for disk in disks:
|
||||||
|
self.instance.updateDeviceFlags("""<disk type='file' device='disk'>
|
||||||
|
<driver name='{}' type='{}'/>
|
||||||
|
<source file='{}'/>
|
||||||
|
<target dev='{}' bus='{}'/>
|
||||||
|
<boot order='{}'/>
|
||||||
|
</disk>""".format(disk["driver_name"],disk["driver_type"],disk["backing_file"],disk["target_dev"],disk["target_bus"],disk["boot_order"]))
|
||||||
|
|
||||||
|
snap = self.instance.snapshotLookupByName(name, 0)
|
||||||
|
# flag number for delete snapshot metadata only
|
||||||
|
# is 2 (0x2; 1 << 1)
|
||||||
|
snap.delete(VIR_DOMAIN_SNAPSHOT_DELETE_METADATA_ONLY)
|
||||||
|
|
||||||
|
def revert_external_snapshot(self, name, instance, date, desc):
|
||||||
|
snap = self.instance.snapshotLookupByName(name, 0)
|
||||||
|
snapXML = ElementTree.fromstring(snap.getXMLDesc(0))
|
||||||
|
disks = []
|
||||||
|
for disk_backup in snapXML.findall('inactiveDomain/devices/disk'):
|
||||||
|
if disk_backup.get('device') == 'disk':
|
||||||
|
disk_dict = {}
|
||||||
|
if disk_backup.find('source') is not None:
|
||||||
|
disk_dict['backing_file'] = disk_backup.find('source').get('file')
|
||||||
|
if disk_backup.find('driver') is not None:
|
||||||
|
disk_dict['driver_name'] = disk_backup.find('driver').get('name')
|
||||||
|
disk_dict['driver_type'] = disk_backup.find('driver').get('type')
|
||||||
|
if disk_backup.find('target') is not None:
|
||||||
|
disk_dict['target_dev'] = disk_backup.find('target').get('dev')
|
||||||
|
disk_dict['target_bus'] = disk_backup.find('target').get('bus')
|
||||||
|
if disk_backup.find('boot') is not None:
|
||||||
|
disk_dict['boot_order'] = disk_backup.find('boot').get('order')
|
||||||
|
disks.append(disk_dict)
|
||||||
|
|
||||||
|
# flag number for delete snapshot metadata only
|
||||||
|
# is 2 (0x2; 1 << 1)
|
||||||
|
snap.delete(VIR_DOMAIN_SNAPSHOT_DELETE_METADATA_ONLY)
|
||||||
|
base_xml = ElementTree.fromstring(self._XMLDesc(0))
|
||||||
|
for disk in base_xml.findall('devices/disk'):
|
||||||
|
if disk.get('device') == 'disk':
|
||||||
|
backingStore = disk.find('backingStore')
|
||||||
|
if backingStore is not None:
|
||||||
|
if backingStore.find('source') is not None:
|
||||||
|
vol_base = self.get_volume_by_path(backingStore.find('source').get('file'))
|
||||||
|
pool = vol_base.storagePoolLookupByVolume()
|
||||||
|
pool.refresh(0)
|
||||||
|
vol_snap = self.get_volume_by_path(disk.find('source').get('file'))
|
||||||
|
vol_snap.wipe(0)
|
||||||
|
vol_snap.delete(0)
|
||||||
|
|
||||||
|
for disk in disks:
|
||||||
|
self.instance.updateDeviceFlags("""<disk type='file' device='disk'>
|
||||||
|
<driver name='{}' type='{}'/>
|
||||||
|
<source file='{}'/>
|
||||||
|
<target dev='{}' bus='{}'/>
|
||||||
|
<boot order='{}'/>
|
||||||
|
</disk>""".format(disk["driver_name"],disk["driver_type"],disk["backing_file"],disk["target_dev"],disk["target_bus"],disk["boot_order"]))
|
||||||
|
|
||||||
|
self.create_external_snapshot(name, instance, date, desc)
|
||||||
|
|
||||||
|
def get_snapshot(self, flag=VIR_DOMAIN_SNAPSHOT_LIST_INTERNAL):
|
||||||
snapshots = []
|
snapshots = []
|
||||||
snapshot_list = self.instance.snapshotListNames(0)
|
snapshot_list = self.instance.snapshotListNames(flag)
|
||||||
for snapshot in snapshot_list:
|
for snapshot in snapshot_list:
|
||||||
snap = self.instance.snapshotLookupByName(snapshot, 0)
|
snap = self.instance.snapshotLookupByName(snapshot, 0)
|
||||||
snap_description = util.get_xml_path(
|
snap_description = util.get_xml_path(
|
||||||
|
|
Loading…
Reference in a new issue