Glusterfs取代分散砖

时间:2019-01-01 01:20:57

标签: distributed-computing glusterfs

我有一个分散的Glusterfs卷,该卷由3x服务器上的3x砖组成。最近,其中一台服务器发生硬盘故障,并退出集群。我正在尝试替换集群中的这块积木,但我无法使其正常工作。

首先是版本信息:

$ glusterfsd --version
glusterfs 3.13.2
Repository revision: git://git.gluster.org/glusterfs.git
Copyright (c) 2006-2016 Red Hat, Inc. <https://www.gluster.org/>
GlusterFS comes with ABSOLUTELY NO WARRANTY.
It is licensed to you under your choice of the GNU Lesser
General Public License, version 3 or any later version (LGPLv3
or later), or the GNU General Public License, version 2 (GPLv2),
in all cases as published by the Free Software Foundation.

它在Ubuntu 18.04上运行。

以下是现有信息:

Volume Name: vol01
Type: Disperse
Volume ID: 061cac4d-1165-4afe-87e0-27b213ea19dc
Status: Started
Snapshot Count: 0
Number of Bricks: 1 x (2 + 1) = 3
Transport-type: tcp
Bricks:
Brick1: srv02:/srv/glusterfs/vol01/brick <-- This is the brick that died
Brick2: srv03:/srv/glusterfs/vol01/brick
Brick3: srv04:/srv/glusterfs/vol01/brick
Options Reconfigured:
nfs.disable: on
transport.address-family: inet

我希望使用以下方法将srv02砖替换为srv05的砖:

gluster volume replace-brick vol01 srv02:/srv/glusterfs/vol01/brick srv05:/srv/glusterfs/vol01/brick commit force

但是,当我以根用户身份运行此命令时,出现此错误:

volume replace-brick: failed: Pre Validation failed on srv05. brick: srv02:/srv/glusterfs/vol01/brick does not exist in volume: vol01

据我所知,srv05已连接:

# gluster peer status
Number of Peers: 3

Hostname: srv04
Uuid: 5bbd6c69-e0a7-491c-b605-d70cb83ebc72
State: Peer in Cluster (Connected)

Hostname: srv02
Uuid: e4e856ba-61df-45eb-83bb-e2d2e799fc8d
State: Peer Rejected (Disconnected)

Hostname: srv05
Uuid: e7d098c1-7bbd-44e1-931f-034da645c6c6
State: Peer in Cluster (Connected)

您可以看到srv05已连接并且在群集中,srv02并未断开连接...

XFS分区上的所有块大小均相同。 srv05上的块为空。

我在做什么错?我希望不必转储整个FS并在可能的情况下对其进行重建...

编辑2019-01-01: 在这里按照本教程进行操作之后:https://support.rackspace.com/how-to/recover-from-a-failed-server-in-a-glusterfs-array/用新的旧砖替换旧的砖(srv02)。

集群可以识别服务器和实体:

# gluster volume status
Status of volume: vol01
Gluster process                             TCP Port  RDMA Port  Online  Pid
------------------------------------------------------------------------------
Brick srv02:/srv/glusterfs/vol01/brick      N/A       N/A        N       N/A
Brick srv03:/srv/glusterfs/vol01/brick      49152     0          Y       21984
Brick srv04:/srv/glusterfs/vol01/brick      49152     0          Y       16681
Self-heal Daemon on localhost               N/A       N/A        Y       2582
Self-heal Daemon on srv04                   N/A       N/A        Y       16703
Self-heal Daemon on srv03                   N/A       N/A        Y       22006

但是,替代品SRV02上的积木没有上线!

经过大量搜索,我在新的srv02的砖块日志中找到了这个:

[2019-01-01 05:50:05.727791] E [MSGID: 138001] [index.c:2349:init] 0-vol01-index: Failed to find parent dir (/srv/glusterfs/vol01/brick/.glusterfs) of index basepath /srv/glusterfs/vol01/brick/.glusterfs/indices. [No such file or directory]

完全不知道如何解决这个问题,因为它是我希望在线上治愈的空白砖块!

1 个答案:

答案 0 :(得分:1)

最后,我通过砖块目录中的以下命令使砖块联机:

# mkdir .glusterfs
# chmod 600 .glusterfs
# cd .glusterfs
# mkdir indices
# chmod 600 indices
# systemctl restart glusterd

砖块上线了,治愈过程开始于:

# gluster volume heal vol01 full

到目前为止,它似乎工作正常。