On Mon, Aug 12, 2013 at 9:37 AM, richard -rw- weinberger <richard.weinber...@gmail.com> wrote: > On Sun, Aug 11, 2013 at 7:48 PM, Richard W.M. Jones <rjo...@redhat.com> wrote: >> I found by experimentation that killing (SIGTERM) the first vmlinux >> process only kills part of a UML virtual machine. There are still >> vmlinux processes (or threads?) running. >> >> Compare the process listings below before and after sending the >> SIGTERM signal to the head process (25356). >> >> Is there a way to reliably kill a single UML VM? Note that "killall >> vmlinux" isn't a suitable answer because I don't want to kill every >> UML instance on the host. Also using process groups is difficult >> because it stops ^C (in the parent process) from killing the VM. >> >> I'm thinking perhaps naming the processes using umid=<unique> and >> iterating over the process table ... > > Can you try SIGINT? > SIGTERM should work but I fear you found an issue.
Found the root cause, patch is on the way. > Why do you need to kill UML? > Can't you shutdown it? > > Thanks, > //richard > >> Rich. >> >> Before: >> >> 25356 pts/4 S 0:01 /home/rjones/d/linux/vmlinux mem=500M >> initrd=/home/rjones/d/libguestfs/tmp/.guestfs-1000/initrd.25291 init=/init >> guestfs_noreboot=1 rw panic=1 TERM=xterm-256color selinux=0 >> ubd0=/tmp/test1.img ubd1=/home/rjones/d/libguestfs/tmp/libguestfsUtAePE/cow0 >> root=/dev/ubdb ssl3=fd:6 guestfs_channel=/dev/ttyS3 >> 25364 pts/4 S 0:00 /home/rjones/d/linux/vmlinux mem=500M >> initrd=/home/rjones/d/libguestfs/tmp/.guestfs-1000/initrd.25291 init=/init >> guestfs_noreboot=1 rw panic=1 TERM=xterm-256color selinux=0 >> ubd0=/tmp/test1.img ubd1=/home/rjones/d/libguestfs/tmp/libguestfsUtAePE/cow0 >> root=/dev/ubdb ssl3=fd:6 guestfs_channel=/dev/ttyS3 >> 25365 pts/4 S 0:00 /home/rjones/d/linux/vmlinux mem=500M >> initrd=/home/rjones/d/libguestfs/tmp/.guestfs-1000/initrd.25291 init=/init >> guestfs_noreboot=1 rw panic=1 TERM=xterm-256color selinux=0 >> ubd0=/tmp/test1.img ubd1=/home/rjones/d/libguestfs/tmp/libguestfsUtAePE/cow0 >> root=/dev/ubdb ssl3=fd:6 guestfs_channel=/dev/ttyS3 >> 25366 pts/4 S 0:00 /home/rjones/d/linux/vmlinux mem=500M >> initrd=/home/rjones/d/libguestfs/tmp/.guestfs-1000/initrd.25291 init=/init >> guestfs_noreboot=1 rw panic=1 TERM=xterm-256color selinux=0 >> ubd0=/tmp/test1.img ubd1=/home/rjones/d/libguestfs/tmp/libguestfsUtAePE/cow0 >> root=/dev/ubdb ssl3=fd:6 guestfs_channel=/dev/ttyS3 >> 25367 pts/4 t 0:00 /home/rjones/d/linux/vmlinux mem=500M >> initrd=/home/rjones/d/libguestfs/tmp/.guestfs-1000/initrd.25291 init=/init >> guestfs_noreboot=1 rw panic=1 TERM=xterm-256color selinux=0 >> ubd0=/tmp/test1.img ubd1=/home/rjones/d/libguestfs/tmp/libguestfsUtAePE/cow0 >> root=/dev/ubdb ssl3=fd:6 guestfs_channel=/dev/ttyS3 >> 25388 pts/4 t 0:00 /home/rjones/d/linux/vmlinux mem=500M >> initrd=/home/rjones/d/libguestfs/tmp/.guestfs-1000/initrd.25291 init=/init >> guestfs_noreboot=1 rw panic=1 TERM=xterm-256color selinux=0 >> ubd0=/tmp/test1.img ubd1=/home/rjones/d/libguestfs/tmp/libguestfsUtAePE/cow0 >> root=/dev/ubdb ssl3=fd:6 guestfs_channel=/dev/ttyS3 >> 25437 pts/4 t 0:00 /home/rjones/d/linux/vmlinux mem=500M >> initrd=/home/rjones/d/libguestfs/tmp/.guestfs-1000/initrd.25291 init=/init >> guestfs_noreboot=1 rw panic=1 TERM=xterm-256color selinux=0 >> ubd0=/tmp/test1.img ubd1=/home/rjones/d/libguestfs/tmp/libguestfsUtAePE/cow0 >> root=/dev/ubdb ssl3=fd:6 guestfs_channel=/dev/ttyS3 >> >> After: >> >> 25364 pts/4 S 0:00 /home/rjones/d/linux/vmlinux mem=500M >> initrd=/home/rjones/d/libguestfs/tmp/.guestfs-1000/initrd.25291 init=/init >> guestfs_noreboot=1 rw panic=1 TERM=xterm-256color selinux=0 >> ubd0=/tmp/test1.img ubd1=/home/rjones/d/libguestfs/tmp/libguestfsUtAePE/cow0 >> root=/dev/ubdb ssl3=fd:6 guestfs_channel=/dev/ttyS3 >> 25365 pts/4 S 0:00 /home/rjones/d/linux/vmlinux mem=500M >> initrd=/home/rjones/d/libguestfs/tmp/.guestfs-1000/initrd.25291 init=/init >> guestfs_noreboot=1 rw panic=1 TERM=xterm-256color selinux=0 >> ubd0=/tmp/test1.img ubd1=/home/rjones/d/libguestfs/tmp/libguestfsUtAePE/cow0 >> root=/dev/ubdb ssl3=fd:6 guestfs_channel=/dev/ttyS3 >> 25366 pts/4 S 0:00 /home/rjones/d/linux/vmlinux mem=500M >> initrd=/home/rjones/d/libguestfs/tmp/.guestfs-1000/initrd.25291 init=/init >> guestfs_noreboot=1 rw panic=1 TERM=xterm-256color selinux=0 >> ubd0=/tmp/test1.img ubd1=/home/rjones/d/libguestfs/tmp/libguestfsUtAePE/cow0 >> root=/dev/ubdb ssl3=fd:6 guestfs_channel=/dev/ttyS3 >> >> >> >> -- >> Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones >> virt-df lists disk usage of guests without needing to install any >> software inside the virtual machine. Supports Linux and Windows. >> http://people.redhat.com/~rjones/virt-df/ >> >> ------------------------------------------------------------------------------ >> Get 100% visibility into Java/.NET code with AppDynamics Lite! >> It's a free troubleshooting tool designed for production. >> Get down to code-level detail for bottlenecks, with <2% overhead. >> Download for free and get started troubleshooting in minutes. >> http://pubads.g.doubleclick.net/gampad/clk?id=48897031&iu=/4140/ostg.clktrk >> _______________________________________________ >> User-mode-linux-devel mailing list >> User-mode-linux-devel@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel > > > > -- > Thanks, > //richard -- Thanks, //richard ------------------------------------------------------------------------------ Get 100% visibility into Java/.NET code with AppDynamics Lite! It's a free troubleshooting tool designed for production. Get down to code-level detail for bottlenecks, with <2% overhead. Download for free and get started troubleshooting in minutes. http://pubads.g.doubleclick.net/gampad/clk?id=48897031&iu=/4140/ostg.clktrk _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
