On Wed, Dec 03, 2003 at 10:22:16AM +0100, Niklas Saers Mailinglistaccount wrote: > Hi all, > > I'm running CURRENT and set up a jail where I want to install SUN JDK > 1.4.2. In the process, linux emulation needs to be installed. While > installing emulators/linux_base, I get the following: > > ===> Installing for linux_base-7.1_5 > Un-mounting linprocfs... > umount: retrying using path instead of file system ID > ===> Generating temporary packing list > ===> Checking if emulators/linux_base already installed > mknod: /compat/linux/dev/null: Operation not permitted > *** Error code 1 > > While Linux-emulation is already up and running on the host-machine, it > seems the jail is not allowed to create what it needs to run it. I > understand allowing mknod(8) within a jail is dangerous in the case where > you allow untrusted users to be root. Is there some way to either say "I > don't let untrusted users be root" thus allowing this or to compile > emulators/linux_base more jail-friendly, possibly setting things up from > outside the jail?
"jail where I trust users not to try to take over my system" = "chroot". > About compiles, btw, they seem to drag out forever in a jail. Especially > configure takes ridiculous long time. I was under the impression that the > overhead of running a jail should be very small, yet compiling > shells/bash2 in a fresh jail took 8 minutes and 8.6 seconds while > compiling it on the host system took 54.9 seconds. Are there options that > may affect jail-performance I can tune? That's weird..it shouldn't be doing that. What scheduler are you running, what does top show, have you tried to trace the processes using ktrace, etc? Kris
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