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doc: suppored features of kernel client

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Fixes: http://tracker.ceph.com/issues/27209
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
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Yan, Zheng 2018-08-24 17:30:18 +08:00
parent 9bef451aa7
commit f7ace59e53
2 changed files with 41 additions and 0 deletions
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doc/cephfs/index.rst
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@ -75,6 +75,7 @@ authentication keyring.
Mount CephFS as FUSE <fuse>
Mount CephFS in fstab <fstab>
Use the CephFS Shell <cephfs-shell>
Supported Features of Kernel Driver <kernel-features>
Manpage ceph-fuse <../../man/8/ceph-fuse>
Manpage mount.ceph <../../man/8/mount.ceph>
Manpage mount.fuse.ceph <../../man/8/mount.fuse.ceph>

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doc/cephfs/kernel-features.rst Normal file
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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