RHCS配置工具中，DLM与GULM的区别？

techero

在RHCS 4U4 HA 配置过程中，其中有一步是：Choose a Lock Method。共有两个选项，分别是DLM与GULM。问一下各位，这两项有什么区别呢，在实际操作过程中，依据什么来做出选择呢？

lqlboy

顶起，关注中。。。。

nntp

admin guide 有明确说明.  何必又要别人为你重复copy?

cater2002

Red Hat Cluster Suite lock architectures — Via Red Hat Cluster Suite, GFS can use the following lock architectures:


DLM (Distributed Lock Manager), new for Red Hat GFS 6.1 — DLM provides lock management throughout a Red Hat cluster, requiring no nodes to be configured as lock management nodes (contrasted to GULM, which does require certain nodes to be configured as lock management nodes).

GULM (Grand Unified Lock Manager) — A client/server lock architecture that is compatible with Red Hat GFS 6.0.

Nolock — For single node operation only.

joelau

copy了一下

在文件锁定服务上，除了原本6.0版内建的总合式锁定管理员（Grand Unified Lock Manager，GULM）工具外，新版增加分布式锁定管理员，使得每个节点上均能配置独立的文件锁定服务，降低集中式锁定服务器的负载；旧版因为集中在单一服务器时，一旦此部主机停止服务，则各节点也将无法使用文件系统的缺陷。

The master lock server will issue commands directly to the power management interface to power cycle the server node.

The lock manager that is certified for use with Oracle 10gR2 is called GULM (Generic User mode Lock Manager).

[ 本帖最后由 joelau 于 2007-4-6 13:18 编辑 ]