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Add imageFeatures parameter for RBD volume plugin, which is used to

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customize RBD image format 2 features.
Update RBD docs in examples/persistent-volume-provisioning/README.md.
This commit is contained in:
Yecheng Fu
2017-06-16 12:11:35 +00:00
parent 2632bdd5e0
commit 0c7cdf773b
3 changed files with 33 additions and 13 deletions
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5
examples/persistent-volume-provisioning/README.md
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@@ -209,6 +209,7 @@ parameters:
pool: kube
userId: kube
userSecretName: ceph-secret-user
imageFormat: "1"
```
* `monitors`: Ceph monitors, comma delimited. It is required.
@@ -218,6 +219,10 @@ parameters:
* `pool`: Ceph RBD pool. Default is "rbd".
* `userId`: Ceph client ID that is used to map the RBD image. Default is the same as `adminId`.
* `userSecretName`: The name of Ceph Secret for `userId` to map RBD image. It must exist in the same namespace as PVCs. It is required.
* `imageFormat`: Ceph RBD image format, "1" or "2". Default is "1".
* `imageFeatures`: Ceph RBD image format 2 features, comma delimited. This is optional, and only be used if you set `imageFormat` to "2". For a complete list of available image features, please refer to [RBD docs](http://docs.ceph.com/docs/master/man/8/rbd/). By default, all features (except for striping) will be enabled.
NOTE: If you want to use RBD image format 2, you may need to disable some image features, because some of them are not supported by [Ceph kernel module](https://github.com/ceph/ceph-client). For example, only "layering" feature is supported on Linux 4.9 LTS version, so you need to specify `imageFeatures` to "layering", if set `imageFormat` to "2".
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