b1a22463d6
This extends the support for Cinder volume consistency groups. This patch adds snapshot support for all volumes contained within a consistency group. Additional features includes the ability to create a new consistency group from an existing consistency group or consistency group snapshot. This will involve cloning all volumes in the original CG. To enable this feature, update "consistencygroup" items in the cinder policy file (/etc/cinder/policy.json). The default is that all consistencygroup actions are disabled. Co-Authored-By: Brad Pokorny <brad_pokorny@symantec.com> Change-Id: I2e2ae26369a23415bf58d6edac8d161d3a125dd6 Implements: blueprint cinder-consistency-groups
218 lines
8.7 KiB
Python
218 lines
8.7 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from django.core.urlresolvers import reverse
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from django.utils.translation import ugettext_lazy as _
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from horizon import exceptions
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from horizon import forms
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from horizon import messages
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from openstack_dashboard.api import cinder
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class UpdateForm(forms.SelfHandlingForm):
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name = forms.CharField(max_length=255, label=_("Name"))
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description = forms.CharField(max_length=255,
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widget=forms.Textarea(attrs={'rows': 4}),
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label=_("Description"),
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required=False)
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def clean(self):
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cleaned_data = super(UpdateForm, self).clean()
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new_desc = cleaned_data.get('description')
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old_desc = self.initial['description']
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if len(old_desc):
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if len(new_desc) == 0:
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error_msg = _("Description is required.")
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self._errors['description'] = self.error_class([error_msg])
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return cleaned_data
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return cleaned_data
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def handle(self, request, data):
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cgroup_id = self.initial['cgroup_id']
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try:
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cinder.volume_cgroup_update(request,
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cgroup_id,
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data['name'],
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data['description'])
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message = _('Updating volume consistency '
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'group "%s"') % data['name']
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messages.info(request, message)
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return True
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except Exception:
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redirect = reverse("horizon:project:volumes:index")
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exceptions.handle(request,
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_('Unable to update volume consistency group.'),
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redirect=redirect)
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class RemoveVolsForm(forms.SelfHandlingForm):
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def handle(self, request, data):
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cgroup_id = self.initial['cgroup_id']
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name = self.initial['name']
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search_opts = {'consistencygroup_id': cgroup_id}
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try:
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# get list of assigned volumes
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assigned_vols = []
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volumes = cinder.volume_list(request,
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search_opts=search_opts)
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for volume in volumes:
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assigned_vols.append(volume.id)
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assigned_vols_str = ",".join(assigned_vols)
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cinder.volume_cgroup_update(request,
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cgroup_id,
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remove_vols=assigned_vols_str)
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message = _('Removing volumes from volume consistency '
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'group "%s"') % name
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messages.info(request, message)
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return True
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except Exception:
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redirect = reverse("horizon:project:volumes:index")
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exceptions.handle(request, _('Errors occurred in removing volumes '
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'from consistency group.'),
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redirect=redirect)
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class DeleteForm(forms.SelfHandlingForm):
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delete_volumes = forms.BooleanField(label=_("Delete Volumes"),
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required=False)
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def handle(self, request, data):
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cgroup_id = self.initial['cgroup_id']
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name = self.initial['name']
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delete_volumes = data['delete_volumes']
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try:
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cinder.volume_cgroup_delete(request,
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cgroup_id,
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force=delete_volumes)
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message = _('Deleting volume consistency '
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'group "%s"') % name
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messages.success(request, message)
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return True
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except Exception:
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redirect = reverse("horizon:project:volumes:index")
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exceptions.handle(request, _('Errors occurred in deleting '
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'consistency group.'),
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redirect=redirect)
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class CreateSnapshotForm(forms.SelfHandlingForm):
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name = forms.CharField(max_length=255, label=_("Snapshot Name"))
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description = forms.CharField(max_length=255,
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widget=forms.Textarea(attrs={'rows': 4}),
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label=_("Description"),
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required=False)
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def __init__(self, request, *args, **kwargs):
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super(CreateSnapshotForm, self).__init__(request, *args, **kwargs)
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# populate cgroup_id
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cgroup_id = kwargs.get('initial', {}).get('cgroup_id', [])
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self.fields['cgroup_id'] = forms.CharField(widget=forms.HiddenInput(),
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initial=cgroup_id)
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def handle(self, request, data):
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try:
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message = _('Creating consistency group snapshot "%s".') \
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% data['name']
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snapshot = cinder.volume_cg_snapshot_create(request,
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data['cgroup_id'],
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data['name'],
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data['description'])
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messages.info(request, message)
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return snapshot
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except Exception as e:
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redirect = reverse("horizon:project:volumes:index")
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msg = _('Unable to create consistency group snapshot.')
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if e.code == 413:
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msg = _('Requested snapshot would exceed the allowed quota.')
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else:
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search_opts = {'consistentcygroup_id': data['cgroup_id']}
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volumes = cinder.volume_list(request, search_opts=search_opts)
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if len(volumes) == 0:
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msg = _('Unable to create snapshot. Consistency group '
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'must contain volumes.')
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exceptions.handle(request,
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msg,
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redirect=redirect)
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class CloneCGroupForm(forms.SelfHandlingForm):
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name = forms.CharField(max_length=255, label=_("Consistency Group Name"))
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description = forms.CharField(max_length=255,
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widget=forms.Textarea(attrs={'rows': 4}),
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label=_("Description"),
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required=False)
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cgroup_source = forms.ChoiceField(
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label=_("Use a consistency group as source"),
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widget=forms.SelectWidget(
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attrs={'class': 'image-selector'},
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data_attrs=('name'),
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transform=lambda x: "%s" % (x.name)),
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required=False)
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def prepare_cgroup_source_field(self, request, cgroup_id):
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try:
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cgroup = cinder.volume_cgroup_get(request,
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cgroup_id)
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self.fields['cgroup_source'].choices = ((cgroup_id,
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cgroup),)
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except Exception:
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exceptions.handle(request, _('Unable to load the specified '
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'consistency group.'))
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def __init__(self, request, *args, **kwargs):
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super(CloneCGroupForm, self).__init__(request, *args, **kwargs)
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# populate cgroup_id
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cgroup_id = kwargs.get('initial', {}).get('cgroup_id', [])
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self.fields['cgroup_id'] = forms.CharField(widget=forms.HiddenInput(),
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initial=cgroup_id)
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self.prepare_cgroup_source_field(request, cgroup_id)
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def handle(self, request, data):
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try:
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message = _('Creating consistency group "%s".') % data['name']
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cgroup = cinder.volume_cgroup_create_from_source(
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request,
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data['name'],
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source_cgroup_id=data['cgroup_id'],
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description=data['description'])
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messages.info(request, message)
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return cgroup
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except Exception:
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redirect = reverse("horizon:project:volumes:index")
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msg = _('Unable to clone consistency group.')
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search_opts = {'consistentcygroup_id': data['cgroup_id']}
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volumes = cinder.volume_list(request, search_opts=search_opts)
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if len(volumes) == 0:
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msg = _('Unable to clone empty consistency group.')
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exceptions.handle(request,
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msg,
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redirect=redirect)
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