cluster size

circle/dashboard/forms.py

@@ -863,6 +863,10 @@ class VmCreateDiskForm(OperationForm):
         widget=FileSizeWidget, initial=(1 << 20), label=_('Metadata cache size'),
         help_text=_('Metadata cache size, '
                     'like KB, MB'))
+    cluster_size = forms.CharField(
+        widget=FileSizeWidget, initial=(1 << 14), label=_('Cluster size'),
+        help_text=_('Disk cluster (block) size, '
+                    'like KB'))
 
     def __init__(self, *args, **kwargs):
         default = kwargs.pop('default', None)
@@ -885,6 +889,13 @@ class VmCreateDiskForm(OperationForm):
                                           " KB or MB!"))
         return int(size_in_kbytes) / 1024
     
+    def clean_cluster_size(self):
+        size_in_kbytes = self.cleaned_data.get("cluster_size")
+        if not size_in_kbytes.isdigit() and len(size_in_kbytes) > 0:
+            raise forms.ValidationError(_("Invalid format, you can use "
+                                          " KB or MB!"))
+        return int(size_in_kbytes) / 1024
+
 
 class VmDiskExportForm(OperationForm):
     exported_name = forms.CharField(max_length=100, label=_('Filename'))

circle/storage/models.py

@@ -150,6 +150,9 @@ class Disk(TimeStampedModel):
     cache_size = IntegerField(default=1024,
                             help_text=_("Disk metadata cache max size (Kbyte)"),
                             verbose_name=_('cache size'))
+    cluster_size = IntegerField(default=64,
+                            help_text=_("Disk cluster (block) size (Kbyte)"),
+                            verbose_name=_('cluster size'))
 
     class Meta:
         ordering = ['name']
@@ -350,7 +353,7 @@ class Disk(TimeStampedModel):
             'target_device': self.device_type + self.dev_num,
             'target_bus': self.device_bus,
             'disk_device': 'cdrom' if self.type == 'iso' else 'disk',
-            'cache_size': self.cache_size
+            'cache_size': self.cache_size,
         }
 
     def get_disk_desc(self):
@@ -365,6 +368,7 @@ class Disk(TimeStampedModel):
             'type': 'snapshot' if self.base else 'normal',
             'cache_size': self.cache_size,
             'base_dir':  self.base.datastore.path if self.base else None,
+            'cluster_size': self.cluster_size
         }
 
     def get_remote_queue_name(self, queue_id='storage', priority=None,

circle/vm/operations.py

@@ -292,7 +292,7 @@ class CreateDiskOperation(InstanceOperation):
     accept_states = ('STOPPED', 'PENDING', 'RUNNING')
     concurrency_check = False
 
-    def _operation(self, user, size, activity, datastore, name=None, cache_size=1024):
+    def _operation(self, user, size, activity, datastore, name=None, cache_size=1024, cluster_size=64):
         from storage.models import Disk
 
         if not name: