DistOS 2023W 2023-02-01
Revision as of 15:11, 1 February 2023 by Soma (talk | contribs) (Created page with "==Notes== <pre> LOCUS & NFS notes ----------------- NFS: file servers & file clients (few servers, many clients) - files live on the servers LOCUS: every computer has files, not all files are on all computers - so each computer could be a server or a client - or just have local access could have replicas but logically should act like one file - so replicas have to by synchronized - did centralized sync via a designated host - all updates would go there, and th...")
Notes
LOCUS & NFS notes ----------------- NFS: file servers & file clients (few servers, many clients) - files live on the servers LOCUS: every computer has files, not all files are on all computers - so each computer could be a server or a client - or just have local access could have replicas but logically should act like one file - so replicas have to by synchronized - did centralized sync via a designated host - all updates would go there, and then it would distributed the updates to the replicas Is LOCUS very fault tolerant? files could only be as big as any disk - really, idea was small files, not large ones Partitioning was a concern, they have recovery methods, but really individual hosts going down would not lead to good performance - would try to recover, but fundamentally fragile LOCUS tried for transparency, but faults would break that model fast NFS did too, mostly worked, except with faults or if you unlinked open files