Hi,
I am seeing a telnet failure in autotest to a win2k8 DC 64 bit guest.
I have tried some debugging and came to a conclusion that
read_nonblocking() is reading only 3 lines. let me first print the
output of manual login
# telnet -l Administrator 10.0.99.100 23
Trying 10.0.99.100...
Connected to ichigo-dom100.linuxperf9025.net (10.0.99.100).
Escape character is '^]'.
Welcome to Microsoft Telnet Service
password:
*===============================================================
Microsoft Telnet Server.
*===============================================================
C:\Users\Administrator>
Now autotest only reads the first 3 lines(upto Escape.....). It seems
windows is doing something nasty here. I have put some debug prints in
the code and here is the output. let me first put the code snippet
from kvm_utils.py with added debug prints.
def read_until_output_matches(self, patterns, filter=lambda(x):x,
timeout=30.0, internal_timeout=3.0,
print_func=None):
<snip>
end_time = time.time() + timeout
while time.time() < end_time:
# Read data from child
newdata = self.read_nonblocking(internal_timeout)
print("DEBUG: Printing data read by read_nonblocking from output:")
print("DEBUG: data read from output is %s" % newdata)
print("DEBUG: Printing data read by read_nonblocking from
output done.")
# Print it if necessary
if print_func and newdata:
map(print_func, newdata.splitlines())
data += newdata
print("DEBUG: Printing accumulated data read from output:")
print("DEBUG: accumulated data read from output is %s" % data)
print("DEBUG: Printing accumulated data read from output done.")
done = False
# Look for patterns
print("DEBUG: Printing data after filter:")
print("DEBUG: filtered data is %s" % filter(data))
print("DEBUG: Printing data after filter done:")
match = self.match_patterns(filter(data), patterns)
if match != None:
done = True
# Check if child has died
if self.poll() != None:
logging.debug("Process terminated with status %d", self.poll())
done = True
# Are we done?
if done: break
<snip>
Here is the output once the guest comes up.
12:27:25 INFO | DEBUG: Printing data read by read_nonblocking from output:
12:27:25 INFO | DEBUG: data read from output is Trying 10.0.99.100...
12:27:25 INFO | Connected to ichigo-dom100.linuxperf9025.net (10.0.99.100).
12:27:25 INFO | Escape character is '^]'.
12:27:25 INFO |
12:27:25 INFO | DEBUG: Printing data read by read_nonblocking from output done.
12:27:25 INFO | DEBUG: Printing accumulated data read from output:
12:27:25 INFO | DEBUG: accumulated data read from output is Trying
10.0.99.100...
12:27:25 INFO | Connected to ichigo-dom100.linuxperf9025.net (10.0.99.100).
12:27:25 INFO | Escape character is '^]'.
12:27:25 INFO |
12:27:25 INFO | DEBUG: Printing accumulated data read from output done.
12:27:25 INFO | DEBUG: Printing data after filter:
12:27:25 INFO | DEBUG: filtered data is Escape character is '^]'.
12:27:25 INFO | DEBUG: Printing data after filter done:
12:27:29 INFO | DEBUG: Printing data read by read_nonblocking from output:
12:27:29 INFO | DEBUG: data read from output is
12:27:29 INFO | DEBUG: Printing data read by read_nonblocking from output done.
12:27:29 INFO | DEBUG: Printing accumulated data read from output:
12:27:29 INFO | DEBUG: accumulated data read from output is Trying
10.0.99.100...
12:27:29 INFO | Connected to ichigo-dom100.linuxperf9025.net (10.0.99.100).
12:27:29 INFO | Escape character is '^]'.
12:27:29 INFO |
12:27:29 INFO | DEBUG: Printing accumulated data read from output done.
12:27:29 INFO | DEBUG: Printing data after filter:
12:27:29 INFO | DEBUG: filtered data is Escape character is '^]'.
12:27:29 INFO | DEBUG: Printing data after filter done:
and so on... timeout elapses and test fails.
I am not able to find out why read_nonblocking() is reading only 3
lines. I have tried increasing the timeouts and internal_timeouts as
well. But no luck.
Here is how my kvm_tests.cfg looks like.
# colorful prompt, so migration_test_command will fail, try with telnet
ssh_prompt = "C:\Users\Administrator>"
ssh_port = 23
use_telnet = yes
Any clues ?
--
Sudhir Kumar
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