背景
tgt作为一种经典的iSCSI代理，在SAN和分布式块存储上都得到广泛应用。实际工作中可能会碰到tgt部署、运行的各种问题，下面总结了笔者碰到的几个问题和大家一起分享解决办法。
找不到General.pm
- 现象
Can’t locate Config/General.pm in @INC (@INC contains: /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5 .) at /usr/sbin/tgt-admin line 10.
BEGIN failed–compilation aborted at /usr/sbin/tgt-admin line 10. -
解决办法
这是缺乏perl的一些基础库，安装上就好：
yum install perl-Config-General
yum install libibverbs, And whatever dependencies yum asked for ..
安装依赖的驱动报Deprecated config file
[root@bsi]# modprobe iscsi_tcp
WARNING: Deprecated config file /etc/modprobe.conf, all config files belong into /etc/modprobe.d/.
FATAL: Module iscsi_tcp.ko not found.
[root@bsi]# ls /etc/modprobe.conf
/etc/modprobe.conf
* 解决办法
去掉 /etc/modprobe.conf：
[root@bsi]# mv /etc/modprobe.conf /tmp/
[root@bsi]# modprobe iscsi_tcp
[root@bsi]# lsmod | grep iscsi
iscsi_tcp 18333 0
libiscsi_tcp 24176 1 iscsi_tcp
libiscsi 54705 2 iscsi_tcp,libiscsi_tcp
scsi_transport_iscsi 97405 2 iscsi_tcp,libiscsi
找不到前端initiator命令
- 现象
利用tgtadmin 等命令去discover\login 后端导出的逻辑卷的时候，命令出错，提示找不到命令。
解决方法
确认前端iscsi工具没有安装，安装一个就好：
[root@bsi]# yum search iscsi
Loaded plugins: aliases, downloadonly, fastestmirror, priorities, security
Loading mirror speeds from cached hostfile
======================================== N/S Matched: iscsi =========================================
iscsi-initiator-utils.i686 : iSCSI daemon and utility programs
iscsi-initiator-utils.x86_64 : iSCSI daemon and utility programs
iscsi-initiator-utils-devel.i686 : Development files for iscsi-initiator-utils
iscsi-initiator-utils-devel.x86_64 : Development files for iscsi-initiator-utils
Name and summary matches only, use “search all” for everything.
[root@bsi]# yum install iscsi-initiator-utils.x86_64 iscsi-initiator-utils-devel.x86_64