FSPM Architecture

Oracle FS Path Manager (FSPM) manages the Linux multipath framework and communicates with Oracle FS System systems on a control path, which is separate from the data path. The Linux multipath framework manages the LUN data access paths.

The following figure illustrates how the FSPM software installed on a SAN host interacts with a Oracle FS System system. The following table describes meanings of the lines and colors used in the figure.
Table 1 Line and color key for FSPM interaction diagram
Graphic element Description
 alternate image text  Data path
 alternate image text  Control path
 alternate image text  Oracle FS System hardware and software
 alternate image text  Other hardware and software
 alternate image text  SAN host kernel space
 alternate image text  SAN host user space
Figure 1 FSPM interaction with an Oracle FS System  FSPM interaction with an Oracle FS System  
Legend
1  User 10  Linux multipath framework
2  User application 11 iSCSI software initiator (iSCSI)
3  SAN host 12 TCP/IP driver (iSCSI)
4 A Linux Multipath daemon with FSPM plug-ins and 4B FSPM daemon 13 HBA driver (FC, FCoE, or CNA) or NIC driver (iSCSI)
5  Control path (all dashed lines) 14  HBA (FC) or NIC (iSCSI)
6  Oracle FS System administrator 15  SCSI over FC (FC) or iSCSI over IP (iSCSI)
7  Oracle FS System CLI or GUI 16  Data path (all solid lines)
8  Encrypted messages over TCP/IP 17  Oracle FS System
9  Network card 18  Drive Enclosure storage pool