[Pkg-samba-maint] [Bug 7381] "Weird" (according to user) CIFS packet fragmentation

samba-bugs at samba.org samba-bugs at samba.org
Wed Aug 31 08:10:11 UTC 2011


--- Comment #1 from perwool <perwool at seznam.cz> 2011-08-31 08:10:10 UTC ---
As I see, no hot discussion about this bug is here, neither the appologize,
neither the buggless future is promissed. 

I experimented with Jumbo packet, too. I found that the server setting does not
have a noticable influence - the server runs simultaneously more services (nfs,
httpd ... , and samba) but the client side, running on Linux (Debian Squeeze,
Wheezy, Fedora 15,14,11 wee tested), crashes nearly to freeze if only use any
other mtu setting of the default 1500. 

The Windows client (XP prof was the only available) does not mention any
changes if the mtu is changing - does not freeze neither improves the speed.

Most frequent error notice appeared in <dmesg> is 

CIFS VFS: Send error in read = -11 

I do not have any idea how to explain this behavior. The switch was originaly
suspected because it does not supported Jumbo frames. But the bug was
reproduced and tested even on the direct server client cable connect 


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