DRBD driver (Deprecated)¶
The DRBD driver allows Cinder to use DRBDmanage instances.
Note
The LINBIT DRBDManage volume driver is moving to maintenance mode in Stein Release and will be removed in T Release.
Configuration¶
Set the following option in the cinder.conf file for the DRBD transport:
volume_driver = cinder.volume.drivers.drbdmanagedrv.DrbdManageDrbdDriver
Or use the following for iSCSI transport:
volume_driver = cinder.volume.drivers.drbdmanagedrv.DrbdManageIscsiDriver
The following table contains the configuration options supported by the DRBD drivers:
| Configuration option = Default value | Description |
|---|---|
drbdmanage_devs_on_controller = True |
(Boolean) If set, the c-vol node will receive a useable /dev/drbdX device, even if the actual data is stored on other nodes only. This is useful for debugging, maintenance, and to be able to do the iSCSI export from the c-vol node. |
drbdmanage_disk_options = {"c-min-rate": "4M"} |
(String) Disk options to set on new resources. See http://www.drbd.org/en/doc/users-guide-90/re-drbdconf for all the details. |
drbdmanage_net_options = {"connect-int": "4", "allow-two-primaries": "yes", "ko-count": "30", "max-buffers": "20000", "ping-timeout": "100"} |
(String) Net options to set on new resources. See http://www.drbd.org/en/doc/users-guide-90/re-drbdconf for all the details. |
drbdmanage_redundancy = 1 |
(Integer) Number of nodes that should replicate the data. |
drbdmanage_resize_plugin = drbdmanage.plugins.plugins.wait_for.WaitForVolumeSize |
(String) Volume resize completion wait plugin. |
drbdmanage_resize_policy = {"timeout": "60"} |
(String) Volume resize completion wait policy. |
drbdmanage_resource_options = {"auto-promote-timeout": "300"} |
(String) Resource options to set on new resources. See http://www.drbd.org/en/doc/users-guide-90/re-drbdconf for all the details. |
drbdmanage_resource_plugin = drbdmanage.plugins.plugins.wait_for.WaitForResource |
(String) Resource deployment completion wait plugin. |
drbdmanage_resource_policy = {"ratio": "0.51", "timeout": "60"} |
(String) Resource deployment completion wait policy. |
drbdmanage_snapshot_plugin = drbdmanage.plugins.plugins.wait_for.WaitForSnapshot |
(String) Snapshot completion wait plugin. |
drbdmanage_snapshot_policy = {"count": "1", "timeout": "60"} |
(String) Snapshot completion wait policy. |
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