[OpenAFS] Crash testing OpenAFS

chas williams - CONTRACTOR chas@cmf.nrl.navy.mil
Fri, 12 Aug 2005 16:28:25 -0400

>cp -rvp /afs/.bigcell/foo/* /afs/.home.ted-doris.fam/bar #doesn't work
>Where bigcell is 1.2.11 and home is 1.3.87

both servers running linux?  which kernel?  client is running linux?
which kernel?  which version of afs on the client?

>1. The transfer stops for no apparent reason after transferring for quite a
>while. Looking at TOP - rxlistener, etc just disappear. The OS and afs
>server/clients remained up.

after it stops, on the afs client, run: 

	cmdebug localhost 7001 -long

also, look in /usr/afs/logs on both servers.  in particular, FileLog and

you might also try running 'fstrace setset' (as root) after the cp
stops running properly, wait a minute or two, and then issue 'fstrace
dump' and see if anything is in there.

failing any of that, we will likely need to a tcpdump capture from
the client.  check the archives for proper options.

>3. It appears that the crashing is related to actual stress under load i.e.
>when the 24000 files contain actual data.

about how much data?

>4. cp -rvp /afs/.bigcell/foo/* /afs/.bigcell/bar #does seem to work.

how about:

cp -rvp /afs/.home.ted-doris.fam/foo/* /afs/.home.ted-doris.fam/bar