[linux-cifs-client] Re: problems with cifs

[Steven French]

Strange ... the debug log that you sent shows no - zero - pending 
requests, but the session disconnected.

What I would do at this point is confirm (with the tool netstat e.g.) that 
the tcp session to port 445 or 139 is in state connected (established?, I 
forget the exact name that it is displayed as in netstat) - and that run a 
quick network trace (also turn on /proc/fs/cifs/cifsFYI to 1), then do a 
single cd command, stop the trace, turn off cifsFYI,   then kill the cd 
command then send the hopefullly small dmesg (ie of just the single cd 
command which is hanging trying to reestablish a session presumably) and 
send the small network trace.


FYI - Also find the problem with cifs_dir_notify - the fcntl for change 
notify was incorrectly changed from its default of off by another kernel 
change (outside cifs) - so cifs_dir_notify has some problems which I am 
fixing but it should be off by default - so the references to 
cifs_dir_notify in fs/cifs/cifsfs.c (in the file ops) should be removed 
which I am doing (actually putting within the config_cifs_experimental or 
making enabling it a mount option).   Also noticed that Samba 3 and 4 seem 
to have incorrect flags in their header for the notify "filter" (although 
ok for the events themselves)


Steve French
Senior Software Engineer
Linux Technology Center - IBM Austin
phone: 512-838-2294
email: sfrench at-sign us dot ibm dot com
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