Re: trinity 1.1-677-g7bbde28 just hangs after creating fd and sockets in a user mode linux

[Dave Jones <davej@redhat.com>]

On Fri, Aug 30, 2013 at 05:54:12PM +0200, Toralf Förster wrote:
 > the last lines are :
 > 
 > fd[376] = domain:1 (PF_LOCAL) type:0x5 protocol:1
 > fd[377] = domain:2 (PF_INET) type:0x2 protocol:17
 > fd[378] = domain:10 (PF_INET6) type:0x1 protocol:0
 > fd[379] = domain:1 (PF_LOCAL) type:0x1 protocol:1
 > fd[380] = domain:2 (PF_INET) type:0x1 protocol:0
 > created 375 sockets
 > fd[380] = domain:2 (PF_INET) type:0x1 protocol:0
 > created 375 sockets
 > fd[5] = pipe
 > fd[381] = pipe
 > fd[382] = pipe
 > fd[383] = pipe
 > 
 > thats' all,  a
 > $> ps axf | grep trinity | grep -v grep
 > 
 > just gives
 > 
 > $ ssh tfoerste@trinity "ps axf | grep trinity | grep -v grep"
 >  1072 ?        Ss     0:00  |       \_ bash -c cd ~; sudo su -c 'if [[ -d ./t3 ]]; then chmod -R a+rwx ./t3; rm -rf ./t3; fi'; mkdir ./t3; cd ./t3; logger M=; if [[ -n "" ]]; then if [[ -d /victims/v1 ]]; then sudo chmod -R a+rwx /victims/v1; sudo rm -rf /victims/v1; fi; mkdir -p /victims/v1/v2; for i in $(seq -w 1 100); do touch /victims/v1/v2/f$i 2>/dev/null; mkdir /victims/v1/v2/d$i 2>/dev/null; done; fi;  trinity -C 1 -N 10000
 >  1080 ?        S      0:00  |           \_ trinity -C 1 -N 10000
 >  1081 ?        S      0:00  |               \_ trinity -C 1 -N 10000
 >  1082 ?        R      2:37  |               \_ trinity -C 1 -N 10000
 > 
 > $ ssh tfoerste@trinity "ls -l ~/t3/*log"
 > -rw-r--r-- 1 tfoerste users     0 Aug 30 17:49 /home/tfoerste/t3/trinity-child0.log
 > -rw-r--r-- 1 tfoerste users 19610 Aug 30 17:49 /home/tfoerste/t3/trinity.log
 > 
 > 
 > Because I updated both trinity and the UML kernel I'm unsure were to start

ah, I think I know what's up here. It's hanging just before it tries to create
some 'perf' fds. I bet that either you have that config'd off in your uml kernel,
or uml doesn't support perf.

I'll add some error handling later today.

	Dave