guest_config_minidisks is to update a minidisk, so the vdev should be required to specify which disk to update.
Current code would each time use root_vdev+1 as the first disk and /mnt/ephemaral0 as the first mount point. So when the guest_config_minidisks is called for more than one time, unless user specify the vdev and mnt point explicitly, would lead to conflict.
def process_additional_minidisks(self, userid, disk_info):
'''Generate and punch the scripts used to process additional disk into
target vm's reader.
'''
for idx, disk in enumerate(disk_info):
vdev = disk.get('vdev') or self.generate_disk_vdev(
offset = (idx + 1))
fmt = disk.get('format')
mount_dir = disk.get('mntdir') or ''.join(['/mnt/ephemeral',
str(idx)])
From users' perspective, I think this is unreasonable.
It's from openstack driver's requirement that we can't specify the vdev as required, since openstack driver doesn't know the vdev of ephemeral disk, it just know the format.
We can update doc to recommend customer to specify the vdev, format and mountpoint explicitly, since if customer want to configure these disk, he already the info for the disk he want to configure. Will update doc for it.