[Linux-cluster] Samba failover "impossible" due to missing cifs client reconnect?

Lon Hohberger lhh at redhat.com
Thu Sep 8 18:24:28 UTC 2005


On Wed, 2005-09-07 at 22:15 +0200, Axel Thimm wrote:
> After having setup our workarounds for NFS we are very happy with how
> it's working. Now we're looking at Samba.
> 
> But we have quite a showstopper right at the beginning. The smb/cifs
> clients, be it smbclient or Windows XP, don't like their TCP stream
> being resetted and don't retry/reconnect (contrary to NFS).
> 
> It looks like the protocol has no considerations for retries above the
> TCP/IP level. So when the TCP stream is torn on the server's side due
> to relocation (either due to crash/fencing or soft) any client
> smb/cifs activity is broken at that time.
> 
> This means that any data transfer via smb/cifs shares during the
> relocation will fail, and there is nothing we can do on the server's
> side. Or is there?

Potentially not, in the past, we've always had clients reconnect.

-- Lon





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