GlusterFS内部文件标识符（GFID）是一个uuid，对于整个集群中的每个文件都是唯一的。这类似于普通文件系统中的索引节点号。文件的GFID存储在名为的xattr中trusted.gfid
[root@k8s ~]# kubectl get pod -o wide NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES glusterfs-cz45m 1/1 Running 14 (26h ago) 3d2h 10.0.2.34 k8s.node.worker.01glusterfs-gnpsk 1/1 Running 14 (26h ago) 3d2h 10.0.2.34 k8s.node.worker.02 glusterfs-xtlmp 1/1 Running 14 (26h ago) 3d6h 10.0.2.35 k8s.node.worker.03 [root@k8s ~]# heketi-cli --user=admin --secret='My Secret' --server=http://10.1.241.85:8080 volume info d4c379a9fd02de7a9bc1a59ac3ece02b Name: vol_d4c379a9fd02de7a9bc1a59ac3ece02b Size: 1 Volume Id: d4c379a9fd02de7a9bc1a59ac3ece02b Cluster Id: 563efc153a15e62560fd0afedd3a61fd Mount: 10.0.2.35:vol_d4c379a9fd02de7a9bc1a59ac3ece02b ### 挂载点 Mount Options: backup-volfile-servers=10.0.2.34,10.0.2.33 Block: false Free Size: 0 Reserved Size: 0 Block Hosting Restriction: (none) Block Volumes: [] Durability Type: replicate Distribute Count: 1 Replica Count: 2 Snapshot Factor: 1.00 ############ 10.0.2.35 宿主机 ############## [root@k8s ~]# mkdir /testgfid [root@k8s ~]# mount -t glusterfs -o aux-gfid-mount 10.0.2.35:vol_d4c379a9fd02de7a9bc1a59ac3ece02b /testgfid [root@k8s ~]# cd /testgfid/ [root@k8s testgfid]# ll total 8 drwxr-sr-x 259 root 2003 8192 Jan 24 23:42 data drwxr-sr-x 2 root 2003 26 Jan 26 23:28 logs [root@k8s testgfid]# ll -a total 8 drwxrwsr-x 5 root 2003 48 Jan 24 23:36 . dr-xr-xr-x. 18 root root 260 Jan 28 01:25 .. drwxr-sr-x 259 root 2003 8192 Jan 24 23:42 data drwxr-sr-x 2 root 2003 26 Jan 26 23:28 logs [root@k8s testgfid]# getfattr -n glusterfs.gfid.string /testgfid/data/00/00/CgACImHuyn2AS_CWAAAAMT6WPfM4496987 getfattr: Removing leading '/' from absolute path names # file: testgfid/data/00/00/CgACImHuyn2AS_CWAAAAMT6WPfM4496987 glusterfs.gfid.string="c49afbc3-48db-4ee1-9538-1b0643d056dc" ############# ############ [root@k8s /]# gluster volume info vol_d4c379a9fd02de7a9bc1a59ac3ece02b Volume Name: vol_d4c379a9fd02de7a9bc1a59ac3ece02b Type: Replicate Volume ID: 19558c08-c2b9-4500-a2e6-2c73660f9fc5 Status: Started Snapshot Count: 0 Number of Bricks: 1 x 2 = 2 Transport-type: tcp Bricks: Brick1: 10.0.2.35:/var/lib/heketi/mounts/vg_f47e1d26a2086bb2121f00512259f0e0/brick_00313ded6f8f323b6eea103d84b6f43b/brick Brick2: 10.0.2.33:/var/lib/heketi/mounts/vg_250a0c9d90faa2ad4b39b9dbe6c98866/brick_3bd9d75ae41f4c845408f4d06dca4641/brick Options Reconfigured: performance.client-io-threads: off nfs.disable: on transport.address-family: inet user.heketi.id: d4c379a9fd02de7a9bc1a59ac3ece02b [root@k8s /]# ########### glusterfs pod节点 gfid 对应########### ### gfid: c49afbc3-48db-4ee1-9538-1b0643d056dc ### 每个brick有个隐藏文件夹 .glusterfs | gfid 前两个字母:c4 、第34字母: 9a 对应 .glusterfs/c4/9a 目录 ################################ [root@k8s 9a]# pwd /var/lib/heketi/mounts/vg_250a0c9d90faa2ad4b39b9dbe6c98866/brick_3bd9d75ae41f4c845408f4d06dca4641/brick/.glusterfs/c4/9a [root@k8s 9a]# ll total 4 lrwxrwxrwx 1 root 2003 51 Jan 24 15:39 c49a8d79-e4da-4118-b236-346c566519df -> ../../9d/19/9d192590-124a-49b1-861b-746c636c37eb/86 -rw-r--r-- 2 root 2003 49 Jan 24 15:49 c49afbc3-48db-4ee1-9538-1b0643d056dc [root@k8s 9a]# cat c49afbc3-48db-4ee1-9538-1b0643d056dc documentation is available at http://nginx.org [root@k8s 9a]#
参考：
https://www.cnblogs.com/vman/articles/5080375.html
https://qastack.cn/server/823523/glusterfs-split-brain-with-no-path-what-does-it-mean
https://docs.gluster.org/en/latest/Troubleshooting/gfid-to-path/
