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 ... 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
