Ideally we would want to toss a cached mapping of an ip address to hostname if we get a EHOSTDOWN or equivalent on the socket connection request (although in some cases NFS server may be exporting on one port, but not Samba or vice versa - still better to remove a cached mapping). On Thu, Jun 23, 2011 at 2:15 PM, Pavel Shilovsky <piastryyy@xxxxxxxxx> wrote: > 2011/6/23 Grazvydas Ignotas <notasas@xxxxxxxxx>: >> Hello, >> >> one of our slave servers have changed it's address, and I can no >> longer access it's shares that are forwarded to by the main server >> using DFS redirection. The slave server resolves correctly when trying >> to access it directly, but when trying to access through a mount on >> the main server, cifsFYI shows dns_resolve_server_name_to_ip returns >> the old address. I've verified slave server names match and windows >> clients can access those DFS shares correctly. It has been several >> days since server address change. I'm running 2.6.38.2 kernel on >> Ubuntu 10.04. >> >> Any way to clear that dns_resolver cache? I have no desire to reboot >> the machine. >> > > It seems that dns_resolver sets expiry timeout to zero here > (http://lxr.free-electrons.com/source/security/keys/key.c#L310) and > doesn't change it - so, it always returns cached value. > > David, can you comment on this problem, please? > > -- > Best regards, > Pavel Shilovsky. > -- Thanks, Steve -- To unsubscribe from this list: send the line "unsubscribe linux-cifs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
