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Diffstat (limited to 'nova/conf/workarounds.py')
| -rw-r--r-- | nova/conf/workarounds.py | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/nova/conf/workarounds.py b/nova/conf/workarounds.py index 4d315ebc81..366744ad23 100644 --- a/nova/conf/workarounds.py +++ b/nova/conf/workarounds.py @@ -290,12 +290,36 @@ Enabling this workaround option will cause Nova to use the legacy dm-crypt based os-brick encryptor to decrypt the LUKSv1 volume. Note that enabling this option while using volumes that do not provide a host -block device such as Ceph will result in a failure to either boot from or -attach the volume. +block device such as Ceph will result in a failure to boot from or attach the +volume to an instance. See the ``[workarounds]/rbd_block_device`` option for a +way to avoid this for RBD. Related options: * ``compute_driver`` (libvirt) +* ``rbd_block_device`` (workarounds) +"""), + cfg.BoolOpt('rbd_volume_local_attach', + default=False, + help=""" +Attach RBD Cinder volumes to the compute as host block devices. + +When enabled this option instructs os-brick to connect RBD volumes locally on +the compute host as block devices instead of natively through QEMU. + +This workaround does not currently support extending attached volumes. + +This can be used with the disable_native_luksv1 workaround configuration +option to avoid the recently discovered performance issues found within the +libgcrypt library. + +This workaround is temporary and will be removed during the W release once +all impacted distributions have been able to update their versions of the +libgcrypt library. + +Related options: +* ``compute_driver`` (libvirt) +* ``disable_qemu_native_luksv1`` (workarounds) """), ] |