Failure Recovery in the Linux Cluster File System SANiqueTM
Gyu-Ung Lee · The KIPS Transactions PartA · 2001
This paper overviews the design of SANique -a shred file system for Linux cluster based on SAN environment. SANique has the capability of transferring user data from network-attached SAN disks to client applcations directly without the control of centralized file server system. The paper also presents the characteristics of each SANique subsystem: CFM(Cluster File Manager), CVM(Cluster Volume Manager), CLM(Cluster Lock Manager), CBM(Cluster Buffer Manager) and CRM(Cluster Recovery Manager). Under the SANique design layout, then, the syndrome of '||'&'||'quot;split-brain'||'&'||'quot; in shared file system environments is described and defined. The work first generalizes and illustrates possible situations in each of which a shared file system environment may split into two or more pieces of separate brain. Finally, the work describes the SANique approach to the given split-brainproblem using SAN disk named split-brain and develops the overall recovery procedure of shared file systems.