[linux-cifs-client] CIFS doesn't cope well with
network interruptions
Dave Stahl
dave_stahl at symantec.com
Tue Apr 19 23:54:23 GMT 2005
I have seen this as well, particularly if a few operations are attempted
while the server is down for
some reason, reboot, whatever.
a.nielsen at research.uq.edu.au
Sent by: linux-cifs-client-bounces+dave_stahl=symantec.com at lists.samba.org
04/19/2005 04:36 PM
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[linux-cifs-client] CIFS doesn't cope well with network interruptions
Hi all,
I've come across a slightly annoying problem with CIFS and dodgy networks.
If you have a network set up like this:
Client <--A--> Router <--B--> Samba
If one of the links goes down (e.g. the cable providing connection A is
physically unplugged for ~5 seconds) when the link comes back up again
TCP/IP traffic resumes immediately but any applications using CIFS lock up
for anything up to five minutes before resuming. Even running "ls" on the
share locks that tty (e.g. Ctrl+\ and Ctrl+Z won't even work.)
What's worse is that after doing this a few times and getting a few
processes stuck as well, it seems to lock up the entire kernel - even the
magic SysRq key stops responding (although there is a possibility this is
due to my network card driver.)
Has anyone else experienced this problem?
Thanks,
Adam.
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