redhat4下iSCSI安装配置与问题.doc

Linux下iSCSI安装配置-1 概述:环境：安装环境：Redhat Enterprise Linux 4（AS4）内核版本：linux-2.6.9_34.EL准备： 下载iSCSI启动器和目标器的rpm包1.启动器的rpm包在redhat linux安装盘里面就有:（32位CPU）iscsi-initiator-utils--3.i386.rpm（64位CPU）iscsi-initiator-utils--3.x86_64.rpm2.目标器的rpm包网上下载：/developer/iscsitarget-0.4.12-6.src.rpm二Iscsi-initiator安装32位机器#rpm -ivh iscsi-initiator-utils--3.i386.rpm64位机器#rpm -ivh iscsi-initiator-utils--3.x86_64.rpm三Iscsi-target安装1.首先通过rpmbuild将下载的iscsitarget-0.4.12-6.src.rpm包重建成3个rpm包#rpmbuild -rebuild iscsitarget-0.4.12-6.src.rpm重建之后生成以下3个rpm包，32位机器在/usr/src/redhat/RPMS/i386/目录下，64位机器在/usr/src/redhat/RPMS/x86_64/目录下。32位机器的3个rpm包如下：/usr/src/redhat/RPMS/i386/iscsitarget-0.4.12-6.i386.rpm/usr/src/redhat/RPMS/i386/iscsitarget-debuginfo-0.4.12-6.i386.rpm/usr/src/redhat/RPMS/i386/iscsitarget-kernel-0.4.12-6_2.6.9_34.EL.i386.rpm2.安装iscsitarget-kernel-0.4.12-6_2.6.9_34.EL.i386.rpm#rpm -ivh iscsitarget-kernel-0.4.12-6_2.6.9_34.EL.i386.rpm3.安装iscsitarget-0.4.12-6.i386.rpm#rpm -ivh iscsitarget-0.4.12-6.i386.rpm4.源码包的安装如下： 解压 make make install四iscsi-target配置1.检查配置(可以不要）#chkconfig -add iscsi-target#chkconfig -level 2345 iscsi-target onor #chkconfig iscsi-target on2.对target的文件/etc/ietd.conf进行修改Target iqn.2001-04.vod0:storage.disk2 IncomingUsernssl nssl #配置用户名密码#OutgoingUser Lun 0 Path=/dev/sdb,Type=fileio #配置路径#（必须） AliasVOD0 （别名） MaxConnections 6 #最大连接数#3.开启target服务# ./etc/init.d/iscsi target configuration# ./etc/init.d/iscsi-target start(restart,stop等等)五. iscsi-initiator配置1.对initiator的文件/etc/iscsi.conf进行修改DiscoveryAddress=7 #target的IP地址#(lxh:必须） OutgoingUserName=nssl #登陆用户名# OutgoingPassword=nssl #登陆密码# LoginTimeout=15 #登录时间限制#2.开启initiator服务# service iscsi start3.检查target是否挂载# cat /proc/scsi/scsi显示结果如下：Attached devices:Host: scsi0 Channel: 00 Id: 00 Lun: 00 Vendor: VMware, Model: VMware Virtual S Rev: 1.0 Type: Direct-Access ANSI SCSI revision: 02Host: scsi1 Channel: 00 Id: 00 Lun: 00 Vendor: IET Model: VIRTUAL-DISK Rev: 0 Type: Direct-Access ANSI SCSI revision: 044.# iscsi-ls显示结果如下*S.Net iSCSI Driver Version .4:0.1.11(12-Jan-2005)*TARGET NAME : iqn.2001-04.vod0:storage.disk2TARGET ALIAS :HOST ID : 1BUS ID : 0TARGET ID : 0TARGET ADDRESS : 7:3260,1SESSION STATUS : ESTABLISHED AT ThuMay31 16:22:37 EST 2007SESSION ID : ISID 00023d000001 TSIH 100*六Iscsi-target配置文件/etc/iscsi.conf配置详解# =# iSCSI Configuration File Sample - see iscsi.conf(5)# =# # All of the configuration parameters described in this file are applied# globally to all targets, unless they are overridden by a local setting. The# three types of local categories that can override the global settings are:#【lxh注】局部设置可覆盖全局设置的选项有：#【lxh注】目标名#【lxh注】网络描述（子网和地址）#【lxh注】SCSI路由选项（如地址）# Target Name (i.e., TargetName)# Network (i.e., Subnet or Address)# SCSI Routing Instance (i.e., DiscoveryAddress)# 【lxh注】局部设置要在新的一行用space键或tab键开头缩进，如果没有缩进的话，会被当作全局设置看待。# All parameters that are localized to one of the categories above must be# indented by at least one white space or a tab character. If the parameter is# not indented, it will be interpreted as a global parameter (see examples for# each parameter).#【lxh注】如果对于一个参数在配制文件里不止一次定义（全局或是局部），以最后一次为准。# If more that one entry exists for any given parameter (either global or# local), the last entry has precedence.#【lxh注】如果在网络设置下的参数设置与discovery address和target name下的同参数配置不同，那么以网络设置下的参数设置为准。# If a parameter setting under the network category conflicts with a different# setting of the same parameter under the discovery address or target name# category (for the same target), the network setting will have precedence.#【lxh注】如果参数没有在iscsi.conf中说明，则执行默认的配置。默认的值在readme文件中可以看到。# If a parameter is not specified in the iscsi.conf file, the default setting is# used. The default values for all parameters can be found in the readme file.# In the sample settings shown below, the following definitions apply:# = any alpha-numeric text string# = any numeric text string# = valid IP address of the form a.b.c.d/e# = valid portal address of the form a.b.c.d:e#【lxh注】网络配置# -# Network Category# -# To localize parameters to targets on a particular network (i.e., to# override the global settings), you need to use either the Subnet or# Address settings. The format for the Subnet setting is a.b.c.d/e. An# example of these settings would be:#Subnet=/24# The format for Address is a.b.c.d. An example of these settings would be:#Address=# # The following parameters can be specified using the network category:#【lxh注】网络配置的参数有：1） 连接延时设置2） 错误处理延时设置3） TCP设置# 1) Connection Timeout Settings# 2) Error Handling Timeout Settings# 3) TCP Settings#【lxh注】Discovery Address Category设置# -# Discovery Address Category# -# To localize parameters to targets found on a particular discovery address# (i.e., to override the global settings), you need to use the# DiscoveryAddress setting. The format for the DiscoveryAddress setting is# a.b.c.d, a.b.c.d:e (where e is a TCP port number), or an instance name. An# example of these settings would be:#DiscoveryAddress=# or#DiscoveryAddress=:3260# or#DiscoveryAddress=scisrouter1# The following parameters can be specified using the discovery address# category:#【lxh注】可以设置的参数有1） 权限设置2） 连接延时设置3） 持续发现设置4） 异步事件通知设置# 1) Authentication Settings# 2) ConnectionTimeout Settings# 3) Continuous Discovery settings# 4) AsyncEvent Notification Settings#【lxh注】Target name 参数# -# Target Name Category# -# To localize parameters to targets identified by a particular target name# (i.e., to override the global settings), you need to use the# TargetName setting. The format for the TargetName setting is# either the iqn or eui format. An example of these settings would be:#TargetName=.cisco:00.0d1d898e8d66.t0# The following parameters can be specified using the target name category:#【lxh注】1） CRC校验设置2） iSCSI操作参数设置3） 连接延持限制4） Session时间延持限制5） 错误处理时间延持限制6） TCP设置7） Enable/Disable targets# 1) CRC Settings# 2) iSCSI Operational Parameter settings# 3) Connection Timeout Settings# 4) Session Timeout Settings# 5) Error Handling Timeout Settings# 6) TCP Settings# 7) Enable/Disable targets# =# PARAMETERS# =#【lxh设置】权限设置# -# AUTHENTICATION SETTINGS# -#【lxh注】全局的设置用户名和密码，方便initiator对target进行权限验证# To globally configure a CHAP username and password for initiator# authentication by the target(s), uncomment the following lines:#OutgoingUsername=#OutgoingPassword=# # The maximum length for both the password and username is 256 characters.#【lxh注】设置用户名和密码的例子# An example username and password would be:# #OutgoingUsername=alice#OutgoingPassword=nty57nbe #【lxh注】全局的设置用户名和密码，方便target对initiator进行权限验证# To globally configure a CHAP username and password for target(s)# authentication by the initiator, uncomment the following lines:#IncomingUsername=#IncomingPassword=# # The maximum length for both the password and username is 256 characters.# An example username and password would be:# #IncomingUsername=bill#IncomingPassword=ghot67 #【lxh注】？# The global authentication settings can be overridden on a per discovery# address basis. An example of a unique username and password for all targets# found at address 4 would be:#DiscoveryAddress=4# OutgoingUsername=fred# OutgoingPassword=uhyt6h # and/or#DiscoveryAddress=4# IncomingUsername=mary# IncomingPassword=kdhjkd9l#DiscoveryAddress=4#DiscoveryAddress=3【lxh注】摘要设置？# -# DIGEST SETTINGS# -# To globally enable CRC32C digest checking for the header and/or data part of# iSCSI PDUs, uncomment one or both of the following lines:#HeaderDigest=always#DataDigest=always# To globally disable digest checking for the header and/or data part of# iSCSI PDUs, uncomment one or both of the following lines:#HeaderDigest=never#DataDigest=never# To globally allow the targets to control the setting of the digest checking,# with the initiator requesting a preference of enabling the checking, uncomment# one or both of the following lines: #HeaderDigest=prefer-on#DataDigest=prefer-on# To globally allow the targets to control the setting of the digest checking,# with the initiator requesting a preference of disabling the checking,# uncomment one or both of the following lines:#HeaderDigest=prefer-off#DataDigest=prefer-off# The global digest settings can be overridden on a per target name basis. An# example of enabling header and data digest checking just for target iqn.1987-# 05.com.cisco:00.0d1d898e8d66.t0 would be:#TargetName=.cisco:00.0d1d898e8d66.t0# HeaderDigest=always# DataDigest=always#【lxh注】如果initiator和target设置不一致，则login失败# It should also be noted that if the initiator and the target have incompatible# settings (e.g., target set for always and initiator set for never), the# login will fail.#【lxh注】ENABLE/DISABLE TARGETS# -# ENABLE/DISABLE TARGETS# -# To globally enable/disable group of targets use the following option.# TargetNames mentioned after the below entry will be enabled by default.#Enabled=yes# TargetNames mentioned after the below entry will be disabled by default.#Enabled=no# # To specifically enable/disable a target, use the following entry# under Targetname.#TargetName=.cisco:00.0d1d898e8d66.t0# Enabled=yes#【lxh注】连接时间延迟# -# CONNECTION TIMEOUT SETTINGS# - # To globally specify the time to wait for a login PDU to be received from# the target in response to a login request sent by the initiator before failing# the connection attempt, uncomment the following line:#LoginTimeout=# where is in seconds. A setting of 0 will result in commands never# being timed out.# IdleTimeout and ActiveTimeout determine when a ping has to be sent to check# the status of the connection when there is no traffic on the connection from# the target.# To globally specify the time to wait on a connection with no tasks active in# the session, uncomment the following line:#【lxh注】空闲时间延迟#IdleTimeout=# where is in seconds. A setting of 0 will result in a ping never# being sent.# To globally specify the time to wait on a connection with tasks active in the# session, uncomment the following line:#【lxh注】活动时间延迟#ActiveTimeout=# where is in seconds. A setting of 0 will result in a ping never# being sent.# To globally specify the time to wait for a ping response after a ping has been# sent to a target before failing the existing connection and initiating a new# one, uncomment the following line:#【lxh注】ping时间延迟#PingTimeout=# where is in seconds. A setting of 0 will result in the ping command# never timing out.#【lxh注】登录时间延迟# The global connection timeout settings can be overridden on a per target name,# discovery address or IP address basis. An example of setting the# LoginTimeout value to 12 seconds for just target iqn.1987-# 05.com.cisco:00.0d1d898e8d66.t0 would be:#TargetName=.cisco:00.0d1d898e8d66.t0# LoginTimeout=12# An example of setting the PingTimeout value to 8 seconds for just all# targets found at address 4 would be:#DiscoveryAddress=4# PingTimeout=8# An example of setting the IdleTimeout value to 3 seconds for just all# targets found on subnet 4 would be:#Subnet=/24# IdleTimeout=3#【lxh注】session时间延迟# -# SESSION TIMEOUT SETTINGS# -【lxh注】当SCSI命令执行失败时，session重建时间延迟设置# To globally specify the length of time to wait for session re-establishment# before failing SCSI commands back to the application, uncomment the# following line:# #ConnFailTimeout=# where is in seconds. A setting of 0 will result in commands never# being failed back due to connection failure.# The global session timeout settings can be overridden on a per target name# basis. An example of setting the ConnFailTimeout value to 5 seconds for# just target .cisco:00.0d1d898e8d66.t0 would be:#TargetName=.cisco:00.0d1d898e8d66.t0# ConnFailTimeout=5# If a third party multipathing application is being used,# then the ConnFailTimeout should be set to smaller value# such as 15. This value is just a guideline so the actual value will be# dependent on the users operating environment.#【lxh注】错误处理时间延持设置# -# ERROR HANDLING TIMEOUT SETTINGS# -【lxh注】全局的说明？# To globally specify the length of time to wait for an abort command to# complete before declaring the abort command has failed, uncomment the# following line:#AbortTimeout=# where is in seconds. A setting of 0 will result in commands never# being timed out.# To globally specify the length of time to wait for a reset command to complete# before declaring that the reset command has failed, uncomment the following# line:#ResetTimeout=# where is in seconds. A setting of 0 will result in commands never# being timed out.# The global error handling timeout settings can be overridden on a per target# name or per IP address basis. An example of setting the AbortTimeout value# to 10 seconds for just target .cisco:00.0d1d898e8d66.t0 would# be:#TargetName=.cisco:00.0d1d898e8d66.t0# AbortTimeout=10# An example of setting the ResetTimeout value to 6 seconds for just all# targets found on portal 4 would be:#Subnet=/24# ResetTimeout=6#【lxh注】continuous discovery设置# -# CONTINUOUS DISCOVERY SETTINGS# -【lxh注】所有的session一直保持打开状态。# To globally specify that all discovery sessions be kept open, uncomment the# following line:#Continuous=yes#【lxh注】所有的session一直保持关闭状态。# To globally specify that all discovery sessions be closed once discovery is# completed, uncomment the following line:#Continuous=no# The global continuous discovery setting can be overridden on a per target# basis. An example of setting Continuous to no for just target iqn.1987-# 05.com.cisco:00.0d1d898e8d66.t0 would be:#TargetName=.cisco:00.0d1d898e8d66.t0# Continuous=no #【lxh注】异步事件通知设置？# -# ASYNC EVENT NOTIFICATION SETTINGS# -# To globally specify that the initiator wants to receive vendor specific async # events from the target(s), uncomment the following line:#SendAsyncText=yes# To globally specify that the initiator does not want to receive vendor # specific async events from the target(s), uncomment the following line:#SendAsyncText=no# The SendAsyncText key can be specified for a particular Discovery Address.# The global async event notification setting can be overridden on a per target# basis. An example of setting SendAsyncText to no for just target iqn.1987-# 05.com.cisco:00.0d1d898e8d66.t0 would be:#TargetName=.cisco:00.0d1d898e8d66.t0# SendAysncText=no# 【lxh注】iSCSI OPERATIONAL PARAMETER SETTINGS# -# iSCSI OPERATIONAL PARAMETER SETTINGS# -# To globally enable R2T flow control (i.e., the initiator must wait for an R2T# command before sending any data), uncomment the following line:#InitialR2T=yes # To globally disable R2T flow control (i.e., the initiator has an implied# initial R2T of FirstBurstLength at offset 0), uncomment the following line:#InitialR2T=no # To globally enable immediate data (i.e., the initiator sends unsolicited data# with the iSCSI command packet), uncomment the following line:#ImmediateData=yes# To globally disable immediate data (i.e., the initiator does not send# unsolicited data with the iSCSI command PDU), uncomment the following line:#ImmediateData=no#【lxh注】数据包的最大字节数# To globally specify the maximum number of data bytes the initiator can receive# in an iSCSI P