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Diffstat (limited to 'doc/cephfs/kernel-features.rst')
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diff --git a/doc/cephfs/kernel-features.rst b/doc/cephfs/kernel-features.rst new file mode 100644 index 00000000..edd27bcd --- /dev/null +++ b/doc/cephfs/kernel-features.rst @@ -0,0 +1,40 @@ + +Supported Features of Kernel Driver +======================================== + +Inline data +----------- +Inline data was introduced by the Firefly release. Linux kernel clients >= 3.19 +can read inline data, can convert existing inline data to RADOS objects when +file data is modified. At present, Linux kernel clients do not store file data +as inline data. + +See `Experimental Features`_ for more information. + +Quotas +------ +Quota was first introduced by the hammer release. Quota disk format got renewed +by the Mimic release. Linux kernel clients >= 4.17 can support the new format +quota. At present, no Linux kernel client support the old format quota. + +See `Quotas`_ for more information. + +Multiple filesystems within a Ceph cluster +------------------------------------------ +The feature was introduced by the Jewel release. Linux kernel clients >= 4.7 +can support it. + +See `Experimental Features`_ for more information. + +Multiple active metadata servers +-------------------------------- +The feature has been supported since the Luminous release. It is recommended to +use Linux kernel clients >= 4.14 when there are multiple active MDS. + +Snapshots +--------- +The feature has been supported since the Mimic release. It is recommended to +use Linux kernel clients >= 4.17 if snapshot is used. + +.. _Experimental Features: ../experimental-features +.. _Quotas: ../quota |