Confirmed on ubuntu 14.04 kernel 3.13.0-27-generic with NFSv4 mounts to an Isilon filesystem - even with very high values for the various kernel.keys parameters, we still get sporadic failures for UID/username mappings resulting in user or group IDs on new files showing up as 4294967294 rather than the correct value.
Our LDAP has < 250 users, and I've set these sysctl values on the NFS clients:
Confirmed on ubuntu 14.04 kernel 3.13.0-27-generic with NFSv4 mounts to an Isilon filesystem - even with very high values for the various kernel.keys parameters, we still get sporadic failures for UID/username mappings resulting in user or group IDs on new files showing up as 4294967294 rather than the correct value.
Our LDAP has < 250 users, and I've set these sysctl values on the NFS clients:
kernel. keys.gc_ delay = 300 keys.maxbytes = 20000 keys.persistent _keyring_ expiry = 259200 keys.root_ maxbytes = 400000 keys.root_ maxkeys = 10000
kernel.
kernel.keys.maxkeys = 10000
kernel.
kernel.
kernel.