New info about frezzes on Suse

[Mauricio Teixeira (netmask)]

Tonight I was installing some packages and I got the infamous Smart
freeze on my Suse box. After this:

   8:Installing autoconf
###################################################################
[ 47%]

It freezes. Then I went to another terminal:

# strace -f -p 23016
(...)
[pid 23070] read(12, 0xbc6b904, 16384)  = -1 EAGAIN (Resource
temporarily unavailable)
[pid 23070] futex(0xbac12f0, FUTEX_WAKE, 1) = 0
[pid 23070] futex(0xbad2f70, FUTEX_WAKE, 1) = 0
[pid 23070] futex(0xbac12f0, FUTEX_WAKE, 1) = 0
[pid 23070] select(0, NULL, NULL, NULL, {1, 0}) = 0 (Timeout)
[pid 23070] futex(0xbac12f0, FUTEX_WAKE, 1) = 0
[pid 23070] futex(0xbac12f0, FUTEX_WAKE, 1) = 0
[pid 23070] read(12, 0xbc6b904, 16384)  = -1 EAGAIN (Resource
temporarily unavailable)
(...)

This error repeated over and over for about 30 minutes. After long time
waiting, I got this:

--- SIGSTOP (Stopped (signal)) @ 0 (0) ---
--- SIGSTOP (Stopped (signal)) @ 0 (0) ---

And the smart term shows:

Traceback (most recent call last):
  File "/usr/lib/python2.4/site-packages/smart/backends/rpm/pm.py", line
253, in _rpmoutthread
    time.sleep(1)
IOError: [Errno 514] Unknown error 514

Then it freezes again, but strace stops and nothing shows after that.

I can reproduce it. Whenever I try to install this set of packages:

  autoconf-2.59-82 at i586         libstdc++-devel-4.0.2_20050901-3 at i586
  automake-1.9.6-2 at i586         ncurses-devel-5.4-71 at i586
  bison-1.875-56 at i586           pkgconfig-0.19-6 at i586
  ctags-2004.11.15-4 at i586       slang-devel-1.4.9-127 at i586
  flex-2.5.4a-297 at i586          task-c
++-devel-100-1.netmask.suse100 at noarch
  gcc-4.0.2_20050901-3 at i586
task-c-devel-100-1.netmask.suse100 at noarch
  gcc-c++-4.0.2_20050901-3 at i586 texinfo-4.8-9.2 at i586
  glib2-devel-2.8.4-3 at i586     zlib-devel-1.2.3-3 at i586
  glibc-devel-2.3.5-40 at i686

Unfortunately it freezes randomly. Each time I run this transaction it
freezes on a different package. Also, note that task-c-devel and task-c
++-devel don't really exist, they're just two packages I'm porting from
Conectiva.

Does this help on something?

If I understand correctly, it was waiting for an external thread (in
this case an rpm thread) that never ended (or did, but smart couldn't
see it).

-- 
% Mauricio Teixeira (netmask)
% mteixeira{a}webset{d}net <> Maceio/AL/BR
% TI+Telecom Analyst <> Linux Specialist
% http://mteixeira.webset.net <> http://pmping.sf.net
% [D0CE 6BD4 526B B7D1 6F4E  85FA A7A0 1A6F B23A A9EE]