RedHat5.4上iscsi+multipath多路径存储配置

最新推荐文章于 2021-05-04 06:44:14 发布

dbcommando

最新推荐文章于 2021-05-04 06:44:14 发布

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分类专栏： Oracle High Availability--RAC 文章标签： redhat 存储 path session disk interface

本文链接：https://blog.youkuaiyun.com/dbcommando/article/details/7639152

本文档详细介绍了在RedHat 5.4系统上配置iscsi+multipath多路径存储的过程，包括安装iscsi包、启用iscsi设备、建立接口文件、连接iscsi目标、配置multipath服务以及验证配置的步骤，旨在为搭建Oracle 11g RAC提供参考。

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最近在RedHat上搭建Oracle 11g r2 RAC，其中存储管理是采用iscsi+multipath的方式，所以将这部分的管理配置单独拿出来另写一篇，仅供参考。

概要

一：安装iscsi包。

二：启用iscsi设备。

三：安装Multipath包。

四：配置Multipath参数。

五：重启multipathd 服务，验证配置

正文

一：安装iscsi包

安装scsi initiator包。安装包可从安装光盘中找到

[root@rac122 ~]# rpm -qa | grep iscsi
iscsi-initiator-utils-6.2.0.871-0.10.el5

二：启用iscsi设备

新建接口文件，接口文件保存在/var/lib/iscsi/ifaces目录下：

[root@rac122 ~]# ls /var/lib/iscsi/ifaces
bnx2i.00:00:00:00:00:00

[root@rac122 ~]# iscsiadm -m iface -I eth0 -o new
New interface eth0 added
[root@rac122 ~]# ls /var/lib/iscsi/ifaces
bnx2i.00:00:00:00:00:00 eth0
[root@rac122 ~]# cat /var/lib/iscsi/ifaces/eth0
# BEGIN RECORD 2.0-871
iface.iscsi_ifacename = eth0
iface.transport_name = tcp
# END RECORD
[root@rac122 ~]# iscsiadm -m iface -I eth0 --op=update -n iface.net_ifacename -v eth0
eth0 updated.
[root@rac122 ~]# cat /var/lib/iscsi/ifaces/eth0
# BEGIN RECORD 2.0-871
iface.iscsi_ifacename = eth0
iface.net_ifacename = eth0
iface.transport_name = tcp
# END RECORD

建完接口文件重启iscsi服务

[root@rac122 ~]# service iscsi restart
Stopping iSCSI daemon:
iscsid dead but pid file exists
[ OK ]off network shutdown. Starting iSCSI daemon: [ OK ]
[ OK ]
Setting up iSCSI targets: iscsiadm: No records found!
[ OK ]

根据提供的IP收索iscsi target
[root@rac122 ~]# iscsiadm -m discovery -t st -p 10.1.252.148:3260
10.1.252.148:3260,1 iqn.2001-05.com.equallogic:0-8a0906-dcced9007-10d000000c74cc10-vol-rac7
10.1.252.148:3260,1 iqn.2001-05.com.equallogic:0-8a0906-495ed9007-b68000000ca4cc4d-vol-rac8
10.1.252.148:3260,1 iqn.2001-05.com.equallogic:0-8a0906-fdded9007-b80000000c44cb23-vol-rac6
10.1.252.148:3260,1 iqn.2001-05.com.equallogic:0-8a0906-fc7ed9007-6b1000000c14cb23-vol-rac5
10.1.252.148:3260,1 iqn.2001-05.com.equallogic:0-8a0906-668ed9007-1ca000000a34ca57-vol-rac2
10.1.252.148:3260,1 iqn.2001-05.com.equallogic:0-8a0906-631ed9007-a93000000a04ca57-vol-rac1
10.1.252.148:3260,1 iqn.2001-05.com.equallogic:0-8a0906-697ed9007-251000000a64ca57-vol-rac3
10.1.252.148:3260,1 iqn.2001-05.com.equallogic:0-8a0906-6b1ed9007-b7c000000a94ca57-vol-rac4

与搜素到的target建立连接

  [root@rac122 ~]# iscsiadm -m node -l
  Logging in to [iface: eth0, target: iqn.2001-05.com.equallogic:0-8a0906-dcced9007-10d000000c74cc10-vol-rac7, portal: 10.1.252.148,3260]
  Logging in to [iface: eth0, target: iqn.2001-05.com.equallogic:0-8a0906-495ed9007-b68000000ca4cc4d-vol-rac8, portal: 10.1.252.148,3260]
  Logging in to [iface: eth0, target: iqn.2001-05.com.equallogic:0-8a0906-fdded9007-b80000000c44cb23-vol-rac6, portal: 10.1.252.148,3260]
  Logging in to [iface: eth0, target: iqn.2001-05.com.equallogic:0-8a0906-fc7ed9007-6b1000000c14cb23-vol-rac5, portal: 10.1.252.148,3260]
  Logging in to [iface: eth0, target: iqn.2001-05.com.equallogic:0-8a0906-668ed9007-1ca000000a34ca57-vol-rac2, portal: 10.1.252.148,3260]
  Logging in to [iface: eth0, target: iqn.2001-05.com.equallogic:0-8a0906-631ed9007-a93000000a04ca57-vol-rac1, portal: 10.1.252.148,3260]
Logging in to [iface: eth0, target: iqn.2001-05.com.equallogic:0-8a0906-697ed9007-251000000a64ca57-vol-rac3, portal: 10.1.252.148,3260]
  Logging in to [iface: eth0, target: iqn.2001-05.com.equallogic:0-8a0906-6b1ed9007-b7c000000a94ca57-vol-rac4, portal: 10.1.252.148,3260]
  Login to [iface: eth0, target: iqn.2001-05.com.equallogic:0-8a0906-dcced9007-10d000000c74cc10-vol-rac7, portal: 10.1.252.148,3260]: successful
  Login to [iface: eth0, target: iqn.2001-05.com.equallogic:0-8a0906-495ed9007-b68000000ca4cc4d-vol-rac8, portal: 10.1.252.148,3260]: successful
  Login to [iface: eth0, target: iqn.2001-05.com.equallogic:0-8a0906-fdded9007-b80000000c44cb23-vol-rac6, portal: 10.1.252.148,3260]: successful
  Login to [iface: eth0, target: iqn.2001-05.com.equallogic:0-8a0906-fc7ed9007-6b1000000c14cb23-vol-rac5, portal: 10.1.252.148,3260]: successful
  Login to [iface: eth0, target: iqn.2001-05.com.equallogic:0-8a0906-668ed9007-1ca000000a34ca57-vol-rac2, portal: 10.1.252.148,3260]: successful
  Login to [iface: eth0, target: iqn.2001-05.com.equallogic:0-8a0906-631ed9007-a93000000a04ca57-vol-rac1, portal: 10.1.252.148,3260]: successful
  Login to [iface: eth0, target: iqn.2001-05.com.equallogic:0-8a0906-697ed9007-251000000a64ca57-vol-rac3, portal: 10.1.252.148,3260]: successful
  Login to [iface: eth0, target: iqn.2001-05.com.equallogic:0-8a0906-6b1ed9007-b7c000000a94ca57-vol-rac4, portal: 10.1.252.148,3260]: successful

  [root@rac122 ~]# iscsiadm -m session
  tcp: [1] 10.1.252.148:3260,1 iqn.2001-05.com.equallogic:0-8a0906-dcced9007-10d000000c74cc10-vol-rac7
  tcp: [2] 10.1.252.148:3260,1 iqn.2001-05.com.equallogic:0-8a0906-495ed9007-b68000000ca4cc4d-vol-rac8
  tcp: [3] 10.1.252.148:3260,1 iqn.2001-05.com.equallogic:0-8a0906-fdded9007-b80000000c44cb23-vol-rac6
  tcp: [4] 10.1.252.148:3260,1 iqn.2001-05.com.equallogic:0-8a0906-fc7ed9007-6b1000000c14cb23-vol-rac5
  tcp: [5] 10.1.252.148:3260,1 iqn.2001-05.com.equallogic:0-8a0906-668ed9007-1ca000000a34ca57-vol-rac2
  tcp: [6] 10.1.252.148:3260,1 iqn.2001-05.com.equallogic:0-8a0906-631ed9007-a93000000a04ca57-vol-rac1
  tcp: [7] 10.1.252.148:3260,1 iqn.2001-05.com.equallogic:0-8a0906-697ed9007-251000000a64ca57-vol-rac3
  tcp: [8] 10.1.252.148:3260,1 iqn.2001-05.com.equallogic:0-8a0906-6b1ed9007-b7c000000a94ca57-vol-rac4

[root@rac122 ~]# iscsiadm -m session -P3
iSCSI Transport Class version 2.0-871
version 2.0-871
Target: iqn.2001-05.com.equallogic:0-8a0906-dcced9007-10d000000c74cc10-vol-rac7
Current Portal: 10.1.252.149:3260,1
Persistent Portal: 10.1.252.148:3260,1
**********
Interface:
**********
Iface Name: eth0
Iface Transport: tcp
Iface Initiatorname: iqn.1994-05.com.redhat:b9e5bb909ae1
Iface IPaddress: 10.1.252.122
Iface HWaddress: <empty>
Iface Netdev: eth0
SID: 1
iSCSI Connection State: LOGGED IN
iSCSI Session State: LOGGED_IN
Internal iscsid Session State: NO CHANGE
************************
Negotiated iSCSI params:
************************
HeaderDigest: None
DataDigest: None
MaxRecvDataSegmentLength: 262144
MaxXmitDataSegmentLength: 65536
FirstBurstLength: 65536
MaxBurstLength: 262144
ImmediateData: Yes
InitialR2T: No
MaxOutstandingR2T: 1
************************
Attached SCSI devices:
************************
Host Number: 20 State: running
scsi20 Channel 00 Id 0 Lun: 0
Attached scsi disk sdk State: running
Target: iqn.2001-05.com.equallogic:0-8a0906-495ed9007-b68000000ca4cc4d-vol-rac8
Current Portal: 10.1.252.150:3260,1
Persistent Portal: 10.1.252.148:3260,1
**********
Interface:
**********
Iface Name: eth0
&nb