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The pNFS client still accesses one meta-data server for traversal or interaction with the namespace; when the client moves data to and from the server it may directly interact with the set of data servers belonging to the pNFS server collection. The NFSv4.1 client can be enabled to be a direct participant in the exact location of file data and ...
The client requests an IP address, and tftp image to boot from, both are provided by the DRBL server. The client boots the initial RAM disk provided by the DRBL server via tftp, and proceeds to mount an nfs share (also provided by the DRBL server) as its root (/) partition. From there, the client boots either the linux distribution on which the ...
These are designed to be easy to set up on commodity PC hardware, and are typically configured using a web browser. They can run from a virtual machine, Live CD, bootable USB flash drive , or from one of the mounted hard drives. They run Samba (an SMB daemon), NFS daemon, and FTP daemons which are freely available for those operating systems.
Some researchers have made a functional and experimental analysis of several distributed file systems including HDFS, Ceph, Gluster, Lustre and old (1.6.x) version of MooseFS, although this document is from 2013 and a lot of information are outdated (e.g. MooseFS had no HA for Metadata Server at that time).
There are Linux-compatible NBD implementations for FreeBSD and other operating systems. The term 'network block device' is sometimes also used generically. Technically, a network block device is realized by three components: the server part, the client part, and the network between them.
FUSE was merged into the mainstream Linux kernel tree in kernel version 2.6.14. [8] The userspace side of FUSE, the libfuse library, generally followed the pace of Linux kernel development while maintaining "best effort" compatibility with BSD descendants. This is possible because the kernel FUSE reports its own "feature levels", or versions.
Unlike NFS (before version 4), the RFS server maintains state to keep track of how many times a file has been opened, or the locks established on a file or device. RFS provides complete UNIX/POSIX file semantics for all file types, including special devices, and named pipes.
Server is only running arbitrary storage protocol like SFTP, SMB, NFS, etc. All synchronization logic is handled by client. This is generally good, because cheap cloud storage usually does not allow users to run custom software on storage server, they only provide access to storage.