glusterfs split-brain

split-brain种类

• data split-brain
• metadata split-brain
• entry split-brain
• glid-mismatch

解决split-brain步骤

• 确定split-brain文件的路径
  gluster volume heal info split-brain
• 关闭正在open 该文件的app
• 确定脑裂的类型

getfattr -d -m . -e hex <file-path-on-brick>

扩展文件

或者

getfattr -n replica.split-brain-status <path-to-file>
eg.
getfattr -n replica.split-brain-status file100
file: file100
replica.split-brain-status="data-split-brain:no
metadata-split-brain:yes Choices:test-client-0,test-client-1"

• 确定正确的副本，并恢复
  这里，主要说明一下使用cli解决data和metadata的方式

• Select the bigger-file as source
  gluster volume heal <volume> split-brain bigger-file <file>
• Select one replica as source for a particular file
  gluster volume heal <volume> split-brain source-brick <host:brick> <file>
• Trying to heal /dir would fail as it is in entry split-brain
  gluster volume heal <volume> split-brain source-brick <host:brick>