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POSIX typically only refreshes the user's supplementary group information upon login. Since NFS servers may often refresh their concept of the user supplementary group membership at their own cadence, it is possible for the NFS client's access cache to become stale due to the user's group membership changing on the server after the user has already logged in on the client. While it is reasonable to expect that such group membership changes are rare, and that we do not want to optimise the cache to accommodate them, it is also not unreasonable for the user to expect that if they log out and log back in again, that the staleness would clear up. Reviewed-by: Benjamin Coddington <bcodding@redhat.com> Tested-by: Benjamin Coddington <bcodding@redhat.com> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> |
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