[Lustre-discuss] need help debuggin an access permission problem

Tina Friedrich Tina.Friedrich at diamond.ac.uk
Thu Sep 23 02:46:44 PDT 2010

Hello List,

I'm after debugging hints...

I have a couple of users that intermittently get I/O errors when trying 
to ls a directory (as in, within half an hour, works -> doesn't work -> 

Users/groups are kept in ldap; as far as I can see/check, the ldap 
information is consistend everywhere (i.e. no replication failure or 

I am trying to figure out what is going on here/where this is going 
wrong. Can someone give me a hint on how to debug this? Specifically, 
how does the MDS look up this sort of information, could there be a 
'list too long' type of error involved, something like that?


Tina Friedrich, Computer Systems Administrator, Diamond Light Source Ltd
Diamond House, Harwell Science and Innovation Campus - 01235 77 8442

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