lustre-01: 简介
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2. Components
a) MDS
MDS target (MDT).
b) OSS (Object Storage Server)
OSS targets (OSTs)
c) client
Metadata Client (MDC), Object Storage Client (OSC), and a Management Client (MGC).
A Logical Object Volume (LOV), manages file striping across many OSTs.
A group of OSCs are wrapped into a single LOV.
the OSCs provide transparent access to the file system.
Different clients can write to different parts of the same file at the same time, while other clients can read from the file.
d) Lustre Networking (LNET)
LNET interoperates with a variety of network transports through Network Abstraction Layers (NAL).
Lustre Network Drivers (LNDs) are available for a number of commodity and high-end networks, including Infiniband, TCP/IP, Quadrics Elan, Myrinet (MX and GM) and Cray.
In clusters with a Lustre file system, servers and clients communicate with one another over a custom networking API known as Lustre Networking (LNET), while the disk storage behind the MDSs and OSSs is connected to these servers using traditional SAN technologies.
Key features of LNET include:
RDMA, when supported by underlying networks such as Elan, Myrinet and InfiniBand.
Support for many commonly-used network types such as InfiniBand and IP.
High availability and recovery features enabling transparent recovery in conjunction with failover servers.
Simultaneous availability of multiple network types with routing between them.
LNET interoperates with a variety of network transports through Network Abstraction Layers (NAL).
e) Management Server (MGS)
The MGS stores configuration information for all Lustre file systems in a cluster. Each Lustre target contacts the MGS to provide information, and Lustre clients contact the MGS to retrieve information. The MGS requires its own disk for storage. However, there is a provision that allows the MGS to share a disk ("co-locate") with a single MDT. The MGS is not considered "part" of an individual file system; it provides configuration information for all managed Lustre file systems to other Lustre components.
2. Components
a) MDS
MDS target (MDT).
b) OSS (Object Storage Server)
OSS targets (OSTs)
c) client
Metadata Client (MDC), Object Storage Client (OSC), and a Management Client (MGC).
A Logical Object Volume (LOV), manages file striping across many OSTs.
A group of OSCs are wrapped into a single LOV.
the OSCs provide transparent access to the file system.
Different clients can write to different parts of the same file at the same time, while other clients can read from the file.
d) Lustre Networking (LNET)
LNET interoperates with a variety of network transports through Network Abstraction Layers (NAL).
Lustre Network Drivers (LNDs) are available for a number of commodity and high-end networks, including Infiniband, TCP/IP, Quadrics Elan, Myrinet (MX and GM) and Cray.
In clusters with a Lustre file system, servers and clients communicate with one another over a custom networking API known as Lustre Networking (LNET), while the disk storage behind the MDSs and OSSs is connected to these servers using traditional SAN technologies.
Key features of LNET include:
RDMA, when supported by underlying networks such as Elan, Myrinet and InfiniBand.
Support for many commonly-used network types such as InfiniBand and IP.
High availability and recovery features enabling transparent recovery in conjunction with failover servers.
Simultaneous availability of multiple network types with routing between them.
LNET interoperates with a variety of network transports through Network Abstraction Layers (NAL).
e) Management Server (MGS)
The MGS stores configuration information for all Lustre file systems in a cluster. Each Lustre target contacts the MGS to provide information, and Lustre clients contact the MGS to retrieve information. The MGS requires its own disk for storage. However, there is a provision that allows the MGS to share a disk ("co-locate") with a single MDT. The MGS is not considered "part" of an individual file system; it provides configuration information for all managed Lustre file systems to other Lustre components.
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