EMC cx4-480重新划分lun

思考的牛

EMC cx4－480如何重新划分lun

1、首先将lun从存储组里面取出来，选择“Storage groups”,右键主机名，选择“Select LUNS”，在弹出的页面中“Selected LUNs”里面选择lun后点击“Remove”，就可以从存储组里移除lun。

2、选择storage pools－－RAID Groups－－RAID Groups n,选中lun（shift或ctr－左键可以选中多个）右键lun名，选择Destroy lun。这样lun就被删除掉了。

3、重新建lun的时候可以点击标签栏上的工具，然后选择批量建lun。

重新划分lun后，在主机上执行一下操作：

1.执行powermt remove dev=all
－－是为了防止powerpath记录以前的信息，导致认盘状态不对！所以要先删除之前的认盘信息！在去执行powermt config
2.执行powermt config
3.执行powermt save
4.执行powermt display dev=all
看下盘符状态，对比几台机器之间的盘符是否正确
emcpadm 上面有更改盘符的提示！

释放powermt display dev=all未列出但emcpadm getusedpseudos列出在使用的pseudo name：

1. emcpadm getusedpseudos

It will show all the pseudo names available in "powermt display dev=all" command.


2. emcpadm getfreepseudos

It will show the first available free pseudo (emcpower name)


3. emcpadm getfreepseudos -n 60

It will show 60 available pseudo names sequentially (Customer can even use 1000 instead of 60 if required ). We can use pipe grep with this command to find out any exact pseudo name (emcpower) is available or not.

4. powermt release
It will release the pseudo names (those are not in "powermt display dev=all" command output) from the EMC PowerPath database.

5. emcpadm renamepseudo -s emcpowerxx -t emcpoweryy

It will rename the emcpowerxx to emcpoweryy (I assumed the concerned pseudo name is emcpowerxx, in Customer place it can be different)

6. powermt display dev=all | grep emcpoweryy

It will show, that emcpoweryy is in the "powermt dispay dev=all" command output or not.

7. powermt save