Posted Jul 20, 2005 3:41 UTC (Wed) by daniel
Parent article: Kernel Summit 2005: Clustering
"Distributed lock management appears to be a kernel task, however"
To be precise, we determined that distributed lock managers used by cluster filesystems may reasonably be implemented in kernel space to reduce the number of context switches required by a cluster filesystem (GFS has can use either a user space or a kernel lock manger; the latter performs better).
We also determined that it is possible for multiple distributed lock managers to operate simultaneously, including in kernel and user space at the same time, but that they should all share a single (user space) membership/fencing infrastructure.
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