caching relationship, then there must be only one system in the environment
whose ID map role is master and rest all systems must have ID map roles as
subordinate.
Procedure
1. Access the master Storwize V7000 Unified system with the same user (with
whom the access was failing on the subordinate Storwize V7000 Unified
system). You can also run the chkauth -i command on the master system.
Note: Accessing the master Storwize V7000 Unified system (or chkauth -i
command) with a user creates the ID mapping information on the system.
Although, any user from the domain can be used to create the ID maps, it is
advisable (refer to idMapConfig option of cfgad CLI command) to use the same
user.
2. Check whether the ID map is created. Use lsidmap CLI command to display
the ID maps that also contains information about the domain name, SID, and
the ID range.
3. Export the ID mapping information from the master system into an XML file,
which is stored in the /ftdc folder of the active management node.
Note: Use the cfgidmap CLI command to export ID mapping information.
4. Import the ID mapping information in the Storwize V7000 Unified subordinate
system from the XML file.
Note: You can use the scp command to transfer the XML file from master
Storwize V7000 Unified system to the subordinate Storwize V7000 Unified
system. Use the cfgidmap command to import the ID map XML file. The XML
file must be at the /ftdc/files folder.
5. Try to access the data on the subordinate Storwize V7000 Unified system after
the import operation is successfully completed.
Checking client access
Verify that your client workstation can successfully ping the full host name of the
cluster and all of the IP addresses that are associated with it.
About this task
The following example shows how to ping an cluster. When the client connects to
the host name of the cluster, the DNS server responds with IP addresses. You must
then ping each IP address from the client machine.
If clients cannot successfully ping the IP addresses, then they are not able to access
Storwize V7000 Unified whenever the DNS returns the IP address on name
resolution requests. This can cause some clients have access while others do not.
Procedure
1. To obtain the IP addresses of your Storwize V7000 Unified cluster, issue the
nslookup command. .
Information similar to the following example is displayed:
# nslookup yourdomainname
Server: 9.11.136.116
Address: 9.11.136.116#53
Non-authoritative answer:
194 Storwize V7000 Unified: Problem Determination Guide 2073-720
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