Re: [libvirt-users] caps->nguests == 0?
On 06/19/2012 03:20 AM, Zhihua Che wrote:
First, I'm sorry I forgot to mention that I installed my
qemu-system-x86_64 in a non-default path, that is, NOT in /usr/bin,
/usr/local/bin etc.
In this case, if I started up libvirtd with sudo, qemuCapsInitGuest
failed to add hvm guest os type to driver->capabilities because it
can't find qemu-system-x86_64 by searching environmental variable
PATH!.
But, the most confusing thing happened here. I've added the
qemu-system-x86_64 in PATH by editing the /etc/bash.bashrc. Why can't
it still find the qemu?. I found in
qemuCapsInitGuest->virFindFileInPath(info->binary) that the call to
getenv("PATH") didn't return the path I added myself!
Remember, 'sudo' sanitizes PATH. Just because you added the directory
to _your_ PATH, under your uid, does not mean that the sanitized PATH
used by sudo and user root is the same, unless you take explicit actions
to set PATH as part of your sudo environment setup.
--
Eric Blake eblake(a)redhat.com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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