f85e0ffa91
Notes on enabling consistency groups in devstack: http://docs.openstack.org/admin-guide/blockstorage-consistency-groups.html You'll also need to modify the local cinder policy file. Though that's not actually enough to make it work since devstack only provides the LVM volume type and CGs don't work with LVM. You can attempt to create CGs, but they will error. Change-Id: I0ab541c81570cd5f67bb7d04c01bc92bc5cc3ab5 Implements: blueprint reorganise-volumes
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:cgroups: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:groups: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:cgroups: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:cgroups: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.ThemableSelectWidget(
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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:cgroups: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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