Hi, On 01/26/2015 04:28 AM, yangwenfang wrote: > > What: > Byte range lock is applied to lock a region of a file to accelerate > reading/writing concurrently. > > Why: > Currently ocfs2 does not support byte range lock. Since multiple nodes > may concurrently update/write at different positions of the same file > in database workloads, the performance(tpmc) of DB+ocfs2 is much poorer > than > DB+GPFS in running TPCC. > Aiming at improving the efficiency of parallel accesses to the same file, > we have implemented a demo of range lock feature which has been supported > by lustre and GPFS, so that a file can be updated by different nodes in > the cluster when they are visiting different blocks.
would this also make cluster aware fcntl(2) locks with the o2cb stack possible? Cheers, David _______________________________________________ Ocfs2-devel mailing list Ocfs2-devel@oss.oracle.com https://oss.oracle.com/mailman/listinfo/ocfs2-devel
