[LU-20055] NFSv4: NFS client read stale data from a file after another NFS client has updated the same file

• Type: Bug
• Resolution: Unresolved
• Priority: Medium
• Severity: 3
• Assignee: Xiao Yang
• Reporter: Xiao Yang

Description

1. NFS Client1 and NFS Client2 mount different NFS servers which are based the same Lustre filesystem.

Topology:

Lustre Server  ->  Lustre Client1(NFS Server1) -> NFS Client1
              ->  Lustre Client2(NFS Server2) -> NFS Client2

2. NFS Client1 create a file by echo "aaa":

# echo aaa > file
# cat file
aaa

3. NFS Client2 read data from the same file:

# cat file
aaa 

4. NFS Client1 update data into the same file:

# echo bbb > file
# cat file
bbb

5. NFS Client2 read stale data from the same file again:

# cat file
aaa

Issue Links

• is related to: LU-19237 NFS v4 reexport support