How Do I Handle a Service Failure Reported During a Listing Operation in a General-Purpose File System?
Symptom
Both client A and client B mount the same directory of an NFS general-purpose file system. When client A performs a listing operation for this directory, client B deletes some files or directories from the same directory at the same time, and then client A receives a service failure (Unknown error 523).
Possible Cause
NFS lists directory contents with chunks and uses a cookie to keep track of where the client is in a directory listing. During a listing, if the cookie required in the next chunk is deleted by a concurrent operation, the server side returns NFS3ERR_BAD_COOKIE, and the NFS client retries. If the preceding scenario occurs after several retries, a client-side error is reported.
Solution
When listing a directory of an NFS general-purpose file system, avoid creating or deleting files or directories in that directory at the same time. For details, see NFS Version 3 Protocol Specification.
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