Cloud Storage with Red Hat Ceph Storage
In this chapter, you learned:
You can distinguish the different characteristics for file-based, block-based, and object-based storage.
CephFS is a POSIX-compliant file system that is built on top of RADOS to provide file-based storage.
CephFS requires at least one Metadata Server that is separate from file data.
Deploying CephFS requires multiple steps:
Create two pools, one for CephFS data and another for CephFS metadata.
Start the MDS service on the hosts.
Create a CephFS file system.
You can mount CephFS file systems with either of the two available clients:
The kernel client, which does not support quotas but is faster.
The FUSE client, which supports quotas as ACLs but is slower.
NFS Ganesha is a user space NFS file server for accessing Ceph storage.
CephFS supports multisite geo-replication with snapshots.
You can determine which OSDs store a file's objects.
You can modify the RADOS layout to control how files are mapped to objects.
CephFS enables asynchronous snapshots by creating a folder in the hidden
.snapfolder.You can schedule snapshots for your CephFS file system.
