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Jasonnash
19
January, 2009

Just a note when changing the hostname on a Celerra…..

So I was playing with SRM in our new Charlotte lab.  I must say, it’s nice having a couple of EMC Celerra NS20s all to yourself.  Anyway…I hit a problem with the SRA when configuring Site Recovery Manager and thought I’d pass along a little note.  The error I got was:

Invalid XML returned from storage array management script: Failed to get attribute 'id' for node 'Array'

This happened when I would configure the SRA and have it query the NS20 on either side.  The problem has to do with changing the hostname on the Celerras before configuring SRM.  If you look at the output below from the “nas_cel -list” command you will see that the name for id 0, the local Celerra, is ns20_prod and not newhost as shown in the prompt.

[[email protected] ~]$ nas_cel -list
id    name          owner mount_dev  channel    net_path        CMU
0     ns20-prod     0                                           APM000838019030000
7     ns20-dr       0                           192.168.1.80    APM000838018980000
[[email protected] ~]$

To correct the problem you need to run the nas_cel -update command after changing the hostname on a Celerra.  For example:

[[email protected] ~]$ nas_cel -update id=0
operation in progress (not interruptible)...
id         = 0
name       = newhost
owner      = 0
device     =
channel    =
net_path   =
celerra_id = APM000838019030000
[[email protected] ~]$

Now you can see that the names match.

[[email protected] ~]$ nas_cel -list
id    name          owner mount_dev  channel    net_path        CMU
0     newhost       0                                           APM000838019030000
7     ns20-dr       0                           192.168.1.80    APM000838018980000
[[email protected] ~]$

Problem solved!  This step isn’t currently in the Install & Configure guide for the Celerra, but it will be soon.

2 thoughts on “Just a note when changing the hostname on a Celerra…..”

  1. I saw your lab Monday. Was at the office for a meeting. It looks pretty good! Except the few Dell servers in there :). The NS series GUI looked great on the plasma! Also, was looking for the trash can and found the Guitar Hero guitar. Thought that was pretty funny.

  2. Hi,

    I am looking for the meaning of “net_path”. In the installation document I read, the guy has an IP in this column whereas, like you, I don’t have anything in this field.

    Do you have any idea for what it can be used to?

    Actually, I’m working on the Celerra Simulator, that is a Celerra VMware image, and I saw a note about the issue you had in it (I can send you the document if you wish).

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