Ceph Filesystem

The Ceph Filesystem (Ceph FS) is a POSIX-compliant filesystem that uses a Ceph Storage Cluster to store its data. The Ceph filesystem uses the same Ceph Storage Cluster system as Ceph Block Devices, Ceph Object Storage with its S3 and Swift APIs, or native bindings (librados).

Important

CephFS currently lacks a robust ‘fsck’ check and repair function. Please use caution when storing important data as the disaster recovery tools are still under development. For more information about using CephFS today, see CephFS for early adopters

Using the Ceph Filesystem requires at least one Ceph Metadata Server in your Ceph Storage Cluster.

Step 1: Metadata Server To run the Ceph Filesystem, you must have a running Ceph Storage Cluster with at least one Ceph Metadata Server running. Add/Remove MDS MDS Configuration Journaler Configuration Manpage ceph-mds

Step 2: Mount CephFS Once you have a healthy Ceph Storage Cluster with at least one Ceph Metadata Server, you may create and mount your Ceph Filesystem. Ensure that you client has network connectivity and the proper authentication keyring. Create CephFS Mount CephFS Mount CephFS as FUSE Mount CephFS in fstab Manpage cephfs Manpage ceph-fuse Manpage mount.ceph

Additional Details Using Ceph with Hadoop libcephfs cephfs-journal-tool File layouts Client eviction Handling full filesystems Troubleshooting Disaster recovery