Local disk statistics on compute nodes are irrelevant when ephemeral
disks are stored in RBD. With RBD, local disk space is not consumed when
instances are started on a compute node, yet it is possible for
scheduler to refuse to schedule an instance when combined disk usage of
instances already running on the node exceeds total disk capacity
reported by the hypervisor driver.
Reviewed: https:/ /review. openstack. org/102064 /git.openstack. org/cgit/ openstack/ nova/commit/ ?id=9b559c31b78 1689fb66551f29a 0cb8d10c7bac94
Committed: https:/
Submitter: Jenkins
Branch: master
commit 9b559c31b781689 fb66551f29a0cb8 d10c7bac94
Author: Dmitry Borodaenko <email address hidden>
Date: Mon Jun 23 16:12:18 2014 -0700
Use Ceph cluster stats to report disk info on RBD
Local disk statistics on compute nodes are irrelevant when ephemeral
disks are stored in RBD. With RBD, local disk space is not consumed when
instances are started on a compute node, yet it is possible for
scheduler to refuse to schedule an instance when combined disk usage of
instances already running on the node exceeds total disk capacity
reported by the hypervisor driver.
Change-Id: I9718c727db205b 6f2191f84355833 91584e96e6e
Closes-bug: #1332660
Signed-off-by: Dmitry Borodaenko <email address hidden>