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https://github.com/retspen/webvirtcloud
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Add possibility to configure HDD cache mode during instance creation
This commit is contained in:
Benjamin Renard
parent
e1d3be17f1
commit
9520282a4b
4 changed files with 43 additions and 6 deletions
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@ -40,6 +40,7 @@ class NewVMForm(forms.Form):
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storage = forms.CharField(max_length=20, required=False)
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template = forms.CharField(required=False)
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images = forms.CharField(required=False)
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cache_mode = forms.CharField(error_messages={'required': _('Please select HDD cache mode')})
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hdd_size = forms.IntegerField(required=False)
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meta_prealloc = forms.BooleanField(required=False)
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virtio = forms.BooleanField(required=False)
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@ -77,6 +77,16 @@
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</select>
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</div>
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</div>
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<div class="form-group">
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<label class="col-sm-3 control-label">{% trans "HDD cache mode" %}</label>
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<div class="col-sm-6">
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<select id="cache_mode" name="cache_mode" class="form-control">
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{% for mode, name in cache_modes %}
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<option value="{{ mode }}">{% trans name %}</option>
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{% endfor %}
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</select>
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</div>
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</div>
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<div class="form-group">
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<label class="col-sm-3 control-label">{% trans "Network" %}</label>
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<div class="col-sm-6">
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@ -159,6 +169,16 @@
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</div>
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<label class="col-lg-1 control-label">{% trans "Image" %}</label>
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</div>
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<div class="form-group">
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<label class="col-sm-3 control-label">{% trans "HDD cache mode" %}</label>
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<div class="col-sm-6">
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<select id="cache_mode" name="cache_mode" class="form-control">
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{% for mode, name in cache_modes %}
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<option value="{{ mode }}">{% trans name %}</option>
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{% endfor %}
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</select>
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</div>
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</div>
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<div class="form-group">
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<label class="col-sm-3 control-label">{% trans "Network" %}</label>
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<div class="col-sm-6">
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@ -42,6 +42,7 @@ def create_instance(request, compute_id):
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networks = sorted(conn.get_networks())
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instances = conn.get_instances()
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get_images = sorted(conn.get_storages_images())
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cache_modes = sorted(conn.get_cache_modes().items())
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mac_auto = util.randomMAC()
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except libvirtError as lib_err:
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error_messages.append(lib_err)
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@ -123,11 +124,15 @@ def create_instance(request, compute_id):
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volumes[path] = conn.get_volume_type(path)
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except libvirtError as lib_err:
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error_messages.append(lib_err.message)
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if data['cache_mode'] not in conn.get_cache_modes():
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error_msg = _("Invalid cache mode")
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error_messages.append(error_msg)
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if not error_messages:
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uuid = util.randomUUID()
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try:
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conn.create_instance(data['name'], data['memory'], data['vcpu'], data['host_model'],
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uuid, volumes, data['networks'], data['virtio'], data['mac'])
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uuid, volumes, data['cache_mode'], data['networks'], data['virtio'],
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data['mac'])
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create_instance = Instance(compute_id=compute_id, name=data['name'], uuid=uuid)
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create_instance.save()
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return HttpResponseRedirect(reverse('instance', args=[compute_id, data['name']]))
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@ -48,6 +48,17 @@ class wvmCreate(wvmConnect):
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"""Get guest capabilities"""
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return util.get_xml_path(self.get_cap_xml(), "/capabilities/host/cpu/arch")
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def get_cache_modes(self):
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"""Get cache available modes"""
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return {
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'default': 'Default',
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'none': 'Disabled',
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'writethrough': 'Write through',
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'writeback': 'Write back',
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'directsync': 'Direct sync', # since libvirt 0.9.5
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'unsafe': 'Unsafe', # since libvirt 0.9.7
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}
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def create_volume(self, storage, name, size, format='qcow2', metadata=False):
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size = int(size) * 1073741824
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stg = self.get_storage(storage)
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@ -129,7 +140,7 @@ class wvmCreate(wvmConnect):
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vol = self.get_volume_by_path(path)
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vol.delete()
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def create_instance(self, name, memory, vcpu, host_model, uuid, images, networks, virtio, mac=None):
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def create_instance(self, name, memory, vcpu, host_model, uuid, images, cache_mode, networks, virtio, mac=None):
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"""
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Create VM function
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"""
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@ -172,11 +183,11 @@ class wvmCreate(wvmConnect):
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if stg_type == 'rbd':
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ceph_user, secret_uuid, ceph_hosts = get_rbd_storage_data(stg)
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xml += """<disk type='network' device='disk'>
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<driver name='qemu' type='%s'/>
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<driver name='qemu' type='%s' cache='%s'/>
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<auth username='%s'>
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<secret type='ceph' uuid='%s'/>
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</auth>
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<source protocol='rbd' name='%s'>""" % (img_type, ceph_user, secret_uuid, image)
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<source protocol='rbd' name='%s'>""" % (img_type, cache_mode, ceph_user, secret_uuid, image)
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if isinstance(ceph_hosts, list):
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for host in ceph_hosts:
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if host.get('port'):
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@ -189,8 +200,8 @@ class wvmCreate(wvmConnect):
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</source>"""
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else:
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xml += """<disk type='file' device='disk'>
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<driver name='qemu' type='%s'/>
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<source file='%s'/>""" % (img_type, image)
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<driver name='qemu' type='%s' cache='%s'/>
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<source file='%s'/>""" % (img_type, cache_mode, image)
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if virtio:
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xml += """<target dev='vd%s' bus='virtio'/>""" % (disk_letters.pop(0),)
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