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How to deal with the unlocated storage pool for N8500 file system

Publication Date:  2014-09-16 Views:  156 Downloads:  0
Issue Description
On the ISM, you can see that the name of the storage pool become "unlocated", and it will be failed to delete the pool.

Alarm Information
Handling Process
 First, enter the "support" mode, use the command "vxdisk list -o alldgs" to check if the all the data disks in the problematic storage pool are in the group of "sfsdg", and the status of "(sfsdg)" in the picture below show that the data disks are not in the group. For this situation, to make the data safe, we suggest to restart the device with a maintenance window.

Second, if all the data disks are in the gourp of "sfsdg", we can use the way as below to restore the device online.
1. use the command "vxdisk list datadiskname" to find the site information of the data disk as below:

2. With "support" mode, use the command "" to reset the storage pool.
N8500_02:~ # vxdisk -g sfsdg -f settag site=NLSAS3T_POOL  huawei-s5600t0_8
3. With "master" mode, use the command below to scan the disk again
storage scanbus
Root Cause
Customer delete and add the same data disk to the storage pool repeatly, or they move one data disk between two storage pool frequently, which will make the flag of the storage pool reset.
We suggest to design all the configuration  before initializing the storage.