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author | 2018-01-04 13:43:33 +0800 | |
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committer | 2018-01-05 11:59:39 +0800 | |
commit | 812ff6ca9fcd3e629e49d4328905f33eee8ca3f5 (patch) | |
tree | 04ece7b4da00d9d2f98093774594f4057ae561d4 /src/ceph/doc/mgr/localpool.rst | |
parent | 15280273faafb77777eab341909a3f495cf248d9 (diff) |
initial code repo
This patch creates initial code repo.
For ceph, luminous stable release will be used for base code,
and next changes and optimization for ceph will be added to it.
For opensds, currently any changes can be upstreamed into original
opensds repo (https://github.com/opensds/opensds), and so stor4nfv
will directly clone opensds code to deploy stor4nfv environment.
And the scripts for deployment based on ceph and opensds will be
put into 'ci' directory.
Change-Id: I46a32218884c75dda2936337604ff03c554648e4
Signed-off-by: Qiaowei Ren <qiaowei.ren@intel.com>
Diffstat (limited to 'src/ceph/doc/mgr/localpool.rst')
-rw-r--r-- | src/ceph/doc/mgr/localpool.rst | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/src/ceph/doc/mgr/localpool.rst b/src/ceph/doc/mgr/localpool.rst new file mode 100644 index 0000000..5779b7c --- /dev/null +++ b/src/ceph/doc/mgr/localpool.rst @@ -0,0 +1,35 @@ +Local pool plugin +================= + +The *localpool* plugin can automatically create RADOS pools that are +localized to a subset of the overall cluster. For example, by default, it will +create a pool for each distinct rack in the cluster. This can be useful for some +deployments that want to distribute some data locally as well as globally across the cluster . + +Enabling +-------- + +The *localpool* module is enabled with:: + + ceph mgr module enable localpool + +Configuring +----------- + +The *localpool* module understands the following options: + +* **subtree** (default: `rack`): which CRUSH subtree type the module + should create a pool for. +* **failure_domain** (default: `host`): what failure domain we should + separate data replicas across. +* **pg_num** (default: `128`): number of PGs to create for each pool +* **num_rep** (default: `3`): number of replicas for each pool. + (Currently, pools are always replicated.) +* **min_size** (default: none): value to set min_size to (unchanged from Ceph's default if this option is not set) +* **prefix** (default: `by-$subtreetype-`): prefix for the pool name. + +These options are set via the config-key interface. For example, to +change the replication level to 2x with only 64 PGs, :: + + ceph config-key set mgr/localpool/num_rep 2 + ceph config-key set mgr/localpool/pg_num 64 |