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

Axel Thimm Axel.Thimm at ATrpms.net
Wed Sep 7 20:15:37 UTC 2005


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?
-- 
Axel.Thimm at ATrpms.net
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