yahoo-eng-team team mailing list archive

[likai <1917721@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

The scsi controller unit number only increases without decreasing, and
there is no recycling.

virt/libvirt/driver.py
```
    def _get_scsi_controller_next_unit(self, guest):
        """Returns the max disk unit used by scsi controller"""
        xml = guest.get_xml_desc()
        tree = etree.fromstring(xml)
        addrs = "./devices/disk[target/@bus='scsi']/address[@type='drive']"

        ret = []
        for obj in tree.xpath(addrs):
            ret.append(int(obj.get('unit', 0)))
        return max(ret) + 1 if ret else 0
```

** Affects: nova
     Importance: Undecided
         Status: New

** Project changed: cinder => nova

-- 
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to OpenStack Compute (nova).
https://bugs.launchpad.net/bugs/1917721

Title:
  nova volume attach scsi controller unit allocation  bug

Status in OpenStack Compute (nova):
  New

Bug description:
  The scsi controller unit number only increases without decreasing, and
  there is no recycling.

  virt/libvirt/driver.py
  ```
      def _get_scsi_controller_next_unit(self, guest):
          """Returns the max disk unit used by scsi controller"""
          xml = guest.get_xml_desc()
          tree = etree.fromstring(xml)
          addrs = "./devices/disk[target/@bus='scsi']/address[@type='drive']"

          ret = []
          for obj in tree.xpath(addrs):
              ret.append(int(obj.get('unit', 0)))
          return max(ret) + 1 if ret else 0
  ```

To manage notifications about this bug go to:
https://bugs.launchpad.net/nova/+bug/1917721/+subscriptions