基于三角模糊数改进的块存储调度算法

摘要

OpenStack作为当前应用最广泛的开源云平台得到了业界的普遍认可,随之带来其块存储模块Cinder的应用也越来越广泛,但Cinder的调度算法以剩余存储空间作为节点调度的条件,这种调度显然并不能达到对综合性能最优节点的调度.文中提出了一种基于三角模糊数的调度算法,该算法同时考虑多个对存储节点的评价因素,可以实现对综合性能最优节点的调度.同时由于三角模糊数的引入,定性指标可以使用定量的方法进行描述,使得调度模型更加健壮.%OpenStack is widely used and brought block storage used more and more widely.Cinder is the block storage module for OpenStack.However,Cinder only considers scheduling the node which has the largest remaining storage capacity.This method does not has the ability to get node which has the best overall performance.Therefore,this paper proposed a scheduling method based on triangular fuzzy number.This method can consider multiple evaluation factors.At the same time the introduction of triangular fuzzy numbers leads to qualitative indicators can be described using quantitative methods.