On Thu, 2005-May-26 22:03:39 -0600, Scott Long wrote: >A few people have suggested modifying UFS to fill this role. It probably >is just as much work as porting GFS, if not more, since UFS/FFS is >closely tied to the buffer cache and block layers on BSD, and divorcing >probably would be quite difficult. It's probably worth noting that (AFAIK) none of the commercial vendors have managed to build a multi-master shared UFS filesystem. This suggests that the effort is considerable. Solaris clustering routes all I/O to a shared filesystem to a single 'master' node, which is responsible for all physical I/O to the disk. This would significantly simplify cache coherency management. Tru64 clustering only really supports AdvFS. Limited UFS support was added in 5.1B - all the cluster members can mount a UFS filesystem but only one can have a R/W mount and all I/O is routed through a single "master" node. -- Peter JeremyReceived on Fri May 27 2005 - 07:25:53 UTC
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