GlusterFS PERFORMANCE TUNING

众所周知，glusterfs对小文件而言，就是个鸡肋，特别是在一个目录下有过W的小文件图片时，ls简单就是个坑，下面我对线上的glusterfs参数做一些优化调整，调整的命令：

gluster volume set VOLNAME OPTION PARAMETER

参数如下：

cluster.data-self-heal-algorithm      ( full/diff )
cluster.min-free-disk                 ( Required minimum free disk space as a percentage like 30%)
cluster.self-heal-window-size         ( 0 < data-self-heal-window-size < 1025)
cluster.stripe-block-size             (size in bytes )
cluster.quorum-type                   (quorum method)
cluster.quorum-count                  (# needed for quorum)
diagnostics.brick-log-level           ( DEBUG|INFO|WARNING|ERROR|CRITICAL|NONE|TRACE )
diagnostics.client-log-level          (DEBUG|INFO|WARNING|ERROR|CRITICAL|NONE|TRACE )
diagnostics.latency-measurement       ( ON|OFF )
diagnostics.dump-fd-stats             ( ON|OFF )
features.quota-timeout          ( 0 < 3600 secs )
geo-replication.indexing          ( ON|OFF )
network.frame-timeout          ( 1800 secs)
network.ping-timeout          ( 42 secs)
performance.cache-max-file-size       ( size in bytes )
performance.cache-min-file-size       ( size in bytes )
performance.cache-refresh-timeout     ( 0 < cache-timeout < 61 )
performance.cache-size