When you're talking about "exists", the account only needs to exist on the clients and the MDS.  The OSSes do not need to be aware of it. 

So, assuming your clients know about this user account, for the MDS it means that user authentication on the MDS (or whatever tool is set in identity_upcall - See the Lustre manual) must recognize the accounts.

- Patrick

On 05/09/2014 11:59 AM, Scott Nolin wrote:
Make sure your UID exists and is consistent on all servers and the clients.

root typically can't have this issue since "uid 0" is everywhere, but user accounts (assuming windows domain accounts) can.

Scott

On 5/8/2014 5:24 PM, Daguman, Brainard R wrote:
Hi All,

I have mixed environment built on lustre v2.4.2 network setup. The
servers are in workgroup IB and eth network (legacy) while clients are
on IB workgroup and domain eth. Currently have issue accessing lustre
files created from clients using root account which has rwx permissions.
When switching over my domain account I’m getting Permissions Denied.

--

Thanks,

Brainard



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