[lustre-discuss] Moving MGT to new host

[Michael Watters]

The issue is I don't want to change the NID, I want to *move* the NID
from one server to another along with the IP address. 


On 01/19/2018 04:53 PM, Dilger, Andreas wrote:
> On Jan 18, 2018, at 09:00, Michael Watters <wattersm at watters.ws> wrote:
>> What is the proper way to move an MGT from one server to another?  I
>> tried moving the disk between VMs and remounting it however the NID for
>> the target never comes up.  Is there a way to add a new NID using a
>> secondary IP with lnetctl?  I don't see a command to do so listed in the
>> man page.
> There is "lctl replace_nids"?
>
> The manual also mentions:
>
>     38.18.4. Examples
>
>     Change the MGS's NID address. (This should be done on each target disk,
>     since they should all contact the same MGS.)
>
>         tunefs.lustre --erase-param --mgsnode=<new_nid> --writeconf /dev/sda
>
> Cheers, Andreas
> --
> Andreas Dilger
> Lustre Principal Architect
> Intel Corporation
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