On 04/13/2013 04:58 PM, Dave Jones wrote: > On Sat, Apr 13, 2013 at 03:26:10PM +0200, Toralf Förster wrote: > > tl;dr; > > > > > > Running a recent trinity within a user mode linux guest (3.9-rc6-...) without parameter -N > > yields into an endless loop of the trinity-main process - it occupies 100% CPU time > > > > The last lines of the command line > > > > trinity ~ # ps axf | grep trinity > > 910 ? SNs 0:01 | \_ bash -c pkill -9 trinity; cd ~; T=/mnt/n22/v/victims; mkdir -p $T; for i in $(seq -w 1 100); do touch $T/f$i; mkdir $T/d$i; done; cd $T; trinity --children 4 --victims $T -x mremap -r -q > > 1115 ? SN 0:00 | \_ trinity --children 4 --victims /mnt/n22/v/victims -x mremap -r -q > > 1116 ? SN 0:00 | \_ trinity --children 4 --victims /mnt/n22/v/victims -x mremap -r -q > > 1117 ? RN 257:20 | \_ trinity --children 4 --victims /mnt/n22/v/victims -x mremap -r -q > > 1359 ? SNL 0:01 | \_ trinity --children 4 --victims /mnt/n22/v/victims -x mremap -r -q > > 1377 ? SNL 0:00 | \_ trinity --children 4 --victims /mnt/n22/v/victims -x mremap -r -q > > 1392 ? SNL 0:00 | \_ trinity --children 4 --victims /mnt/n22/v/victims -x mremap -r -q > > 1395 ? SN 0:00 | \_ trinity --children 4 --victims /mnt/n22/v/victims -x mremap -r -q > > 1744 pts/0 S+ 0:00 \_ grep --colour=auto trinity > > ok, all 4 children are stuck sleeping. it would be interesting to get sysrq-T backtraces of those to see where > they're sleeping. > > just to be sure, make sure they aren't sleeping/waking up very quickly by doing a tail -f *.log > If that's not making any progress, we're definitly hung. The culprit of the hung are these directory permissions I fear : # ls -l /mnt/n22/v/ total 0 d--------- 102 tfoerste users 4040 Apr 13 17:16 victims and because I start trinity from within the directory "victims" all processes just stuck b/c trinity locked out itself. IMO trinity shouldn't change the directory permissions above its own log files - and/or should not change the perms of the victims directory -- MfG/Sincerely Toralf Förster pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3 -- To unsubscribe from this list: send the line "unsubscribe trinity" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
