iscsi共享磁盘客户端简易发现方式

 

 

 

 

 

 

 

客户端设置

InitiatorName=iqn.2021-11.com.zzg:client1

一定注意InitiatorName的大小写 不然识别不了

 

 

multipath.con 格式，不要把所有的blkid都写在一个中括号 不然会提示重复的multiapths

 

defaults {
user_friendly_names yes
path_grouping_policy multibus
failback immediate
no_path_retry fail
}

multipaths {
multipath {
wwid 3600140510c39d9123db493a98752b223
alias ocr1
}

multipath {
wwid 3600140525d3aebe803543388a9b337e5
alias ocr2
}

multipath {
wwid 36001405b54554932e874680b0f0e1327
alias ocr3
}

multipath {
wwid 36001405e7e2e6c8ade640519b7c977c8
alias data1
}

multipath {
wwid 360014055826dd1373424226935bfb053
alias data2
}
}

 udev挂载的两种方式，他们指向都是 dm-* 如果dm权限对了 OWNER="grid",GROUP="asmadmin",MODE="0660" 那就对了

第一：
KERNEL=="dm-*",ENV{DM_UUID}=="mpath-14f504e46494c45526c4b3238447a2d385737532d62497a70",SYMLINK+="asmdisk1",OWNER="grid",GROUP="asmadmin",MODE="0660"
KERNEL=="dm-*",ENV{DM_UUID}=="mpath-14f504e46494c45527065327354512d6f4945332d4c495679",SYMLINK+="asmdisk2",OWNER="grid",GROUP="asmadmin",MODE="0660"

第二：

KERNEL=="dm-*",ENV{DM_UUID}=="mpath-14f504e46494c45526c4b3238447a2d385737532d62497a70",RUN+="/bin/sh -c 'mknod /dev/asmdisk1 b $major $minor; chown grid:asmadmin /dev/asmdisk1; chmod 0660 /dev/asmdisk1'"
KERNEL=="dm-*",ENV{DM_UUID}=="mpath-14f504e46494c45527065327354512d6f4945332d4c495679",RUN+="/bin/sh -c 'mknod /dev/asmdisk2 b $major $minor; chown grid:asmadmin /dev/asmdisk2; chmod 0660 /dev/asmdisk2'"

重启UDEV:
systemctl restart systemd-udevd.service
udevadm control --reload-rules
udevadm trigger

 

systemctl start multipathd.service
systemctl reload multipathd.service
systemctl status multipathd.service
systemctl enable multipathd.service
systemctl disable multipathd.service

 

 

如果grid安装找不到asm磁盘 需要清理一下磁头

清理 ASM 磁盘头部信息

dd if=/dev/zero of=/dev/sdb1 bs=1024 count=100 dd if=/dev/zero of=/dev/sdc1 bs=1024 count=100