Further followups! We are correlating DEBUG-level output from libvirt with the libvirt 1.2.2 code to try to figure out what libvirt is doing under the hood.
Even though we have the log level set to 1 (info) in our libvirtd.conf, we are not seeing the VIR_DEBUG() [1] statements being printed out. There are tons of other presumably-debug lines of output showing up in our log. We are sort of expecting to see the output from [1] in our logs somewhere, given the type of usb mounting we are trying to do? [1] http://libvirt.org/git/?p=libvirt.git;a=blob;f=src/lxc/lxc_controller.c;h=c05dfec6428cad927cd5751004a4f3afc67899de;hb=HEAD#l1396 On Wed, Apr 16, 2014 at 3:58 PM, Filip Maj <f...@saucelabs.com> wrote: > To follow up on this a little bit, tail'ing kern.log while trying to get > our little container up doesn't yield anything with apparmor complaining, > so, unless I'm looking in the wrong spots for apparmor logs (which I don't > think so, as I see other apparmor-related log entries in kern.log), I am > not entirely sure this is an apparmor issue at this point. > > > On Wed, Apr 16, 2014 at 3:25 PM, Filip Maj <f...@saucelabs.com> wrote: > >> Yeah, AppArmor is enabled, but I put everything (that I could find) into >> complain mode: >> >> $ sudo apparmor_status >> apparmor module is loaded. >> 12 profiles are loaded. >> 3 profiles are in enforce mode. >> lxc-container-default >> lxc-container-default-with-mounting >> lxc-container-default-with-nesting >> 9 profiles are in complain mode. >> /sbin/dhclient >> /usr/bin/lxc-start >> /usr/lib/NetworkManager/nm-dhcp-client.action >> /usr/lib/connman/scripts/dhclient-script >> /usr/lib/libvirt/virt-aa-helper >> /usr/sbin/libvirtd >> /usr/sbin/ntpd >> /usr/sbin/rsyslogd >> /usr/sbin/tcpdump >> 3 processes have profiles defined. >> 0 processes are in enforce mode. >> 2 processes are in complain mode. >> /usr/sbin/libvirtd (30419) >> /usr/sbin/ntpd (3418) >> 1 processes are unconfined but have a profile defined. >> /usr/sbin/rsyslogd (626) >> >> And still get issues. From libvirtd.log: >> >> 2014-04-16 22:19:10.855+0000: 30419: info : libvirt version: 1.2.2 >> 2014-04-16 22:19:10.855+0000: 30419: error : virNetSocketReadWire:1446 : >> Cannot recv data: Connection reset by peer >> 2014-04-16 22:19:10.940+0000: 30420: error : virLXCProcessStart:1299 : >> internal error: guest failed to start: Unable to create device >> //var/run/libvirt/lxc/oshi32134.dev/bus/usb//002//003: Operation not >> permitted >> >> 2014-04-16 22:19:10.964+0000: 30420: warning : >> virLXCDomainReAttachHostUsbDevices:388 : Unable to find device 000.000 in >> list of active USB devices >> >> Thanks in advance for any help, Daniel! >> >> Cheers, >> Fil >> >> >> On Tue, Apr 15, 2014 at 1:33 AM, Daniel P. Berrange >> <berra...@redhat.com>wrote: >> >>> On Fri, Apr 11, 2014 at 05:32:28PM -0700, Filip Maj wrote: >>> > Hi! >>> > >>> > First post, kind of a noobie. I've been working with LXC and libvirt >>> for a >>> > few months now. Trying to do some interesting things with containers >>> and >>> > Android devices :D >>> > Here's my entire domain definition: >>> > >>> > <domain type='lxc'> >>> > <name>oshi32134</name> >>> > <uuid>xxxxx</uuid> >>> > <memory unit='KiB'>3145728</memory> >>> > <currentMemory unit='KiB'>3145728</currentMemory> >>> > <vcpu placement='static'>1</vcpu> >>> > <resource> >>> > <partition>/machine</partition> >>> > </resource> >>> > <os> >>> > <type arch='i686'>exe</type> >>> > <init>/sbin/init</init> >>> > </os> >>> > <clock offset='utc'/> >>> > <on_poweroff>destroy</on_poweroff> >>> > <on_reboot>restart</on_reboot> >>> > <on_crash>destroy</on_crash> >>> > <devices> >>> > <emulator>/usr/lib/libvirt/libvirt_lxc</emulator> >>> > <filesystem type='mount' accessmode='passthrough'> >>> > <source dir='/some/valid/filesystem/location'/> >>> > <target dir='/'/> >>> > </filesystem> >>> > <filesystem type='mount' accessmode='passthrough'> >>> > <source dir='/another/valid/filesystem/location'/> >>> > <target dir='/mnt/android'/> >>> > </filesystem> >>> > <interface type='bridge'> >>> > <mac address='xx:xx:xx:xx:xx:xx'/> >>> > <source bridge='br1'/> >>> > </interface> >>> > <console type='pty'> >>> > <target type='lxc' port='0'/> >>> > </console> >>> > <hostdev mode='capabilities' type='misc'> >>> > <source> >>> > <char>/dev/kvm</char> >>> > </source> >>> > </hostdev> >>> > <hostdev mode='subsystem' type='usb' managed='yes'> >>> > <source> >>> > <vendor id='0x04e8'/> >>> > <product id='0x6860'/> >>> > </source> >>> > </hostdev> >>> > </devices> >>> > </domain> >>> >>> Your config looks fine here. >>> >>> > >>> > Everything worked fine until I added the USB <hostdev> element. I'm >>> > essentially trying to get access to a physical Android device >>> connected to >>> > the host from inside a container. When I go to start the container, I >>> get >>> > an error about Operation not permitted. Here's the relevant bits from >>> > /var/log/libvirt/lxc/machine.log: >>> > >>> > 2014-04-11 22:46:40.491+0000: starting up >>> > PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin >>> > LIBVIRT_DEBUG=3 LIBVIRT_LOG_OUTPUTS=3:stderr >>> /usr/lib/libvirt/libvirt_lxc >>> > --name oshi32134 --console 24 --security=none --handshake 27 >>> --background >>> > --veth vnet1 >>> > 2014-04-11 22:46:40.597+0000: 685: info : libvirt version: 1.2.2 >>> > 2014-04-11 22:46:40.597+0000: 685: error : >>> > virLXCControllerSetupHostdevSubsysUSB:1390 : Unable to create device >>> > //var/run/libvirt/lxc/oshi32134.dev/bus/usb//002//003: Operation not >>> > permitted >>> > Unable to create device >>> > //var/run/libvirt/lxc/oshi32134.dev/bus/usb//002//003: Operation not >>> > permitted >>> >>> Do you have AppArmour enabled on the machine. That seems like the >>> most likely thing that would result in libvirt getting that permission >>> error. >>> >>> Regards, >>> Daniel >>> -- >>> |: http://berrange.com -o- >>> http://www.flickr.com/photos/dberrange/ :| >>> |: http://libvirt.org -o- >>> http://virt-manager.org :| >>> |: http://autobuild.org -o- >>> http://search.cpan.org/~danberr/ :| >>> |: http://entangle-photo.org -o- >>> http://live.gnome.org/gtk-vnc :| >>> >> >> >
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