Hi.
I have Centos 7 (updated) running as my host, and I’m using Qemu and KVM, version 2.0.0 and 2.6.0.
I have a Trendnet TU-S9 USB serial dongle attached to the host, which uses the Prolific 2303 chipset.
I blacklisted the pl2303 driver so the host doesn’t grab the device, and want to expose it to the guest.
On the client, I see 2 USB hubs (3.0 and 2.0), and I see 2 USB endpoints (even though 3 are configured). So the USB CF card readers are visible, but not the USB dongle, even though it’s plugged in.
Here’s what I see on the host:
[philipp@kvm1 ~]$ ps -f -p13468
UID PID PPID C STIME TTY TIME CMD
qemu 13468 1 2 14:51 ? 00:02:39 /usr/libexec/qemu-kvm -name guest=ubuntu16.04-2,debug-threads=on -S -object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-2-ubuntu16.04-2/master-key.aes -machine pc-i440fx-rhel7.3.0,accel=kvm,usb=off -cpu Broadwell,+vme,+ds,+acpi,+ss,+ht,+tm,+pbe,+dtes64,+monitor,+ds_cpl,+vmx,+smx,+est,+tm2,+xtpr,+pdcm,+dca,+osxsave,+f16c,+rdrand,+arat,+tsc_adjust,+xsaveopt,+pdpe1gb,+abm,+rtm,+hle -m 8192 -realtime mlock=off -smp 8,maxcpus=12,sockets=12,cores=1,threads=1 -uuid a9590ac8-e532-4dce-b6ef-d3b35c0db865 -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/domain-2-ubuntu16.04-2/monitor.sock,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc,driftfix=slew -global kvm-pit.lost_tick_policy=discard -no-hpet -no-shutdown -global PIIX4_PM.disable_s3=1 -global PIIX4_PM.disable_s4=1 -boot strict=on -device nec-usb-xhci,id=usb,bus=pci.0,addr=0x5 -device ich9-usb-ehci1,id=usb1,bus=pci.0,addr=0xa.0x7 -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x6 -drive file=/var/lib/libvirt/images/ubuntu16.04-2.img,format=raw,if=none,id=drive-virtio-disk0 -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x7,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -drive if=none,id=drive-ide0-0-0,readonly=on -device ide-cd,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -chardev spicevmc,id=charchannel0,name=vdagent -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.spice.0 -spice port=5900,addr=127.0.0.1,disable-ticketing,image-compression=off,seamless-migration=on -device qxl-vga,id=video0,ram_size=67108864,vram_size=67108864,vram64_size_mb=0,vgamem_mb=16,bus=pci.0,addr=0x2 -device intel-hda,id=sound0,bus=pci.0,addr=0x4 -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -chardev spicevmc,id=charredir0,name=usbredir -device usb-redir,chardev=charredir0,id=redir0,bus=usb.0,port=1 -cha
rdev spicevmc,id=charredir1,name=usbredir -device usb-redir,chardev=charredir1,id=redir1,bus=usb.0,port=2 -device usb-host,hostbus=3,hostaddr=13,id=hostdev1,bus=usb.0,port=3 -device usb-host,hostbus=3,hostaddr=12,id=hostdev2,bus=usb.0,port=4 -device usb-host,hostbus=3,hostaddr=15,id=hostdev3,bus=usb1.0,port=1 -device vfio-pci,host=07:10.0,id=hostdev0,bus=pci.0,addr=0x3 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x8 -msg timestamp=on
[philipp@kvm1 ~]$ sudo lsof -p 13468 -n -P
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
qemu-kvm 13468 qemu cwd DIR 253,0 242 64 /
qemu-kvm 13468 qemu rtd DIR 253,0 242 64 /
qemu-kvm 13468 qemu txt REG 253,0 8883768 100834619 /usr/libexec/qemu-kvm
qemu-kvm 13468 qemu mem REG 253,0 19984 34091991 /usr/lib64/sasl2/libplain.so.3.0.0
qemu-kvm 13468 qemu mem REG 253,0 19984 34091988 /usr/lib64/sasl2/liblogin.so.3.0.0
qemu-kvm 13468 qemu mem REG 253,0 57888 33916680 /usr/lib64/sasl2/libdigestmd5.so.3.0.0
qemu-kvm 13468 qemu mem REG 253,0 24160 33916677 /usr/lib64/sasl2/libcrammd5.so.3.0.0
qemu-kvm 13468 qemu mem REG 253,0 1846280 100701718 /usr/lib64/libdb-5.3.so
qemu-kvm 13468 qemu mem REG 253,0 28200 33627120 /usr/lib64/sasl2/libsasldb.so.3.0.0
qemu-kvm 13468 qemu mem REG 253,0 19952 33627117 /usr/lib64/sasl2/libanonymous.so.3.0.0
qemu-kvm 13468 qemu mem REG 253,0 62184 100664409 /usr/lib64/libnss_files-2.17.so
qemu-kvm 13468 qemu mem REG 253,0 68192 100701681 /usr/lib64/libbz2.so.1.0.6
qemu-kvm 13468 qemu mem REG 253,0 99952 100701712 /usr/lib64/libelf-0.166.so
qemu-kvm 13468 qemu mem REG 253,0 398264 100701630 /usr/lib64/libpcre.so.1.2.0
qemu-kvm 13468 qemu mem REG 253,0 28360 100702508 /usr/lib64/libogg.so.0.8.0
qemu-kvm 13468 qemu mem REG 253,0 189256 100882393 /usr/lib64/libvorbis.so.0.4.6
qemu-kvm 13468 qemu mem REG 253,0 2944120 100882395 /usr/lib64/libvorbisenc.so.2.0.9
qemu-kvm 13468 qemu mem REG 253,0 285608 100882391 /usr/lib64/libFLAC.so.8.3.0
qemu-kvm 13468 qemu mem REG 253,0 48848 100960245 /usr/lib64/libgsm.so.1.0.12
qemu-kvm 13468 qemu mem REG 253,0 113584 100664401 /usr/lib64/libnsl-2.17.so
qemu-kvm 13468 qemu mem REG 253,0 157424 100701670 /usr/lib64/liblzma.so.5.2.2
qemu-kvm 13468 qemu mem REG 253,0 65648 101002376 /usr/lib64/libXi.so.6.1.0
qemu-kvm 13468 qemu mem REG 253,0 75848 101002374 /usr/lib64/libXext.so.6.4.0
qemu-kvm 13468 qemu mem REG 253,0 15512 100984172 /usr/lib64/libXau.so.6.0.0
qemu-kvm 13468 qemu mem REG 253,0 301576 100701829 /usr/lib64/libdw-0.166.so
qemu-kvm 13468 qemu mem REG 253,0 155744 100701646 /usr/lib64/libselinux.so.1
qemu-kvm 13468 qemu mem REG 253,0 15624 100701842 /usr/lib64/libgmodule-2.0.so.0.4600.2
qemu-kvm 13468 qemu mem REG 253,0 32304 100701834 /usr/lib64/libffi.so.6.0.1
qemu-kvm 13468 qemu mem REG 253,0 11384 100667805 /usr/lib64/libfreebl3.so
qemu-kvm 13468 qemu mem REG 253,0 23824 101229361 /usr/lib64/libasyncns.so.0.3.1
qemu-kvm 13468 qemu mem REG 253,0 378904 100960252 /usr/lib64/libsndfile.so.1.0.25
qemu-kvm 13468 qemu mem REG 253,0 42520 100702401 /usr/lib64/libwrap.so.0.7.6
qemu-kvm 13468 qemu mem REG 253,0 24104 101002378 /usr/lib64/libXtst.so.6.1.0
qemu-kvm 13468 qemu mem REG 253,0 32312 100826893 /usr/lib64/libSM.so.6.0.1
qemu-kvm 13468 qemu mem REG 253,0 100472 100826878 /usr/lib64/libICE.so.6.3.0
qemu-kvm 13468 qemu mem REG 253,0 141080 101002368 /usr/lib64/libxcb.so.1.1.0
qemu-kvm 13468 qemu mem REG 253,0 1318920 101002372 /usr/lib64/libX11.so.6.3.0
qemu-kvm 13468 qemu mem REG 253,0 6848 101002370 /usr/lib64/libX11-xcb.so.1.0.0
qemu-kvm 13468 qemu mem REG 253,0 15688 100702424 /usr/lib64/libkeyutils.so.1.5
qemu-kvm 13468 qemu mem REG 253,0 62744 100667837 /usr/lib64/libkrb5support.so.0.1
qemu-kvm 13468 qemu mem REG 253,0 19384 100701739 /usr/lib64/libgpg-error.so.0.10.0
qemu-kvm 13468 qemu mem REG 253,0 48672 100984118 /usr/lib64/libunwind.so.8.0.1
qemu-kvm 13468 qemu mem REG 253,0 285296 100702506 /usr/lib64/libjpeg.so.62.1.0
qemu-kvm 13468 qemu mem REG 253,0 334904 100701844 /usr/lib64/libgobject-2.0.so.0.4600.2
qemu-kvm 13468 qemu mem REG 253,0 1595056 100701838 /usr/lib64/libgio-2.0.so.0.4600.2
qemu-kvm 13468 qemu mem REG 253,0 62688 100882399 /usr/lib64/libcelt051.so.0.0.0
qemu-kvm 13468 qemu mem REG 253,0 139008 100664438 /usr/lib64/libnl-3.so.200.23.0
qemu-kvm 13468 qemu mem REG 253,0 444832 100664446 /usr/lib64/libnl-route-3.so.200.23.0
qemu-kvm 13468 qemu mem REG 253,0 494440 100702458 /usr/lib64/libgmp.so.10.2.0
qemu-kvm 13468 qemu mem REG 253,0 160776 100702524 /usr/lib64/libhogweed.so.2.5
qemu-kvm 13468 qemu mem REG 253,0 82176 100702502 /usr/lib64/libtasn1.so.6.2.3
qemu-kvm 13468 qemu mem REG 253,0 465360 101027983 /usr/lib64/libtspi.so.1.2.0
qemu-kvm 13468 qemu mem REG 253,0 290864 100702407 /usr/lib64/libp11-kit.so.0.0.0
qemu-kvm 13468 qemu mem REG 253,0 41080 100664395 /usr/lib64/libcrypt-2.17.so
qemu-kvm 13468 qemu mem REG 253,0 111080 100664419 /usr/lib64/libresolv-2.17.so
qemu-kvm 13468 qemu mem REG 253,0 20024 100701747 /usr/lib64/libcap.so.2.22
qemu-kvm 13468 qemu mem REG 253,0 304576 100701679 /usr/lib64/libdbus-1.so.3.7.4
qemu-kvm 13468 qemu mem REG 253,0 502608 375140 /usr/lib64/pulseaudio/libpulsecommon-6.0.so
qemu-kvm 13468 qemu mem REG 253,0 45456 100701728 /usr/lib64/libjson-c.so.2.0.1
qemu-kvm 13468 qemu mem REG 253,0 454008 100702586 /usr/lib64/libssl.so.1.0.1e
qemu-kvm 13468 qemu mem REG 253,0 2025760 100702584 /usr/lib64/libcrypto.so.1.0.1e
qemu-kvm 13468 qemu mem REG 253,0 19888 100701744 /usr/lib64/libattr.so.1.1.0
qemu-kvm 13468 qemu mem REG 253,0 15608 100702497 /usr/lib64/libboost_system-mt.so.1.53.0
qemu-kvm 13468 qemu mem REG 253,0 94320 100702518 /usr/lib64/libboost_thread-mt.so.1.53.0
qemu-kvm 13468 qemu mem REG 253,0 344280 100868642 /usr/lib64/libldap-2.4.so.2.10.3
qemu-kvm 13468 qemu mem REG 253,0 61872 100868640 /usr/lib64/liblber-2.4.so.2.10.3
qemu-kvm 13468 qemu mem REG 253,0 15848 100701657 /usr/lib64/libcom_err.so.2.1
qemu-kvm 13468 qemu mem REG 253,0 202568 100667824 /usr/lib64/libk5crypto.so.3.1
qemu-kvm 13468 qemu mem REG 253,0 959008 100667833 /usr/lib64/libkrb5.so.3.3
qemu-kvm 13468 qemu mem REG 253,0 324888 100667817 /usr/lib64/libgssapi_krb5.so.2.2
qemu-kvm 13468 qemu mem REG 253,0 19776 100664397 /usr/lib64/libdl-2.17.so
qemu-kvm 13468 qemu mem REG 253,0 251784 101017300 /usr/lib64/libnspr4.so
qemu-kvm 13468 qemu mem REG 253,0 20048 101017301 /usr/lib64/libplc4.so
qemu-kvm 13468 qemu mem REG 253,0 15744 101017302 /usr/lib64/libplds4.so
qemu-kvm 13468 qemu mem REG 253,0 186216 100706671 /usr/lib64/libnssutil3.so
qemu-kvm 13468 qemu mem REG 253,0 1236840 100702603 /usr/lib64/libnss3.so
qemu-kvm 13468 qemu mem REG 253,0 164040 100702605 /usr/lib64/libsmime3.so
qemu-kvm 13468 qemu mem REG 253,0 315080 101072314 /usr/lib64/libssl3.so
qemu-kvm 13468 qemu mem REG 253,0 208920 100701832 /usr/lib64/libidn.so.11.6.11
qemu-kvm 13468 qemu mem REG 253,0 534768 100667864 /usr/lib64/libgcrypt.so.11.8.2
qemu-kvm 13468 qemu mem REG 253,0 2118128 100664059 /usr/lib64/libc-2.17.so
qemu-kvm 13468 qemu mem REG 253,0 143944 100664417 /usr/lib64/libpthread-2.17.so
qemu-kvm 13468 qemu mem REG 253,0 88720 100663365 /usr/lib64/libgcc_s-4.8.5-20150702.so.1
qemu-kvm 13468 qemu mem REG 253,0 1141928 100664399 /usr/lib64/libm-2.17.so
qemu-kvm 13468 qemu mem REG 253,0 999944 100667871 /usr/lib64/libstdc++.so.6.0.19
qemu-kvm 13468 qemu mem REG 253,0 44448 100664421 /usr/lib64/librt-2.17.so
qemu-kvm 13468 qemu mem REG 253,0 6944 100701846 /usr/lib64/libgthread-2.0.so.0.4600.2
qemu-kvm 13468 qemu mem REG 253,0 305168 100984122 /usr/lib64/libtcmalloc.so.4.2.6
qemu-kvm 13468 qemu mem REG 253,0 31904 100827014 /usr/lib64/libusbredirparser.so.1.0.0
qemu-kvm 13468 qemu mem REG 253,0 99528 100826629 /usr/lib64/libusb-1.0.so.0.1.0
qemu-kvm 13468 qemu mem REG 253,0 1287896 100701840 /usr/lib64/libglib-2.0.so.0.4600.2
qemu-kvm 13468 qemu mem REG 253,0 49800 100702607 /usr/lib64/libcacard.so.0.0.0
qemu-kvm 13468 qemu mem REG 253,0 1230208 100749039 /usr/lib64/libspice-server.so.1.10.1
qemu-kvm 13468 qemu mem REG 253,0 80096 101153158 /usr/lib64/libibverbs.so.1.0.0
qemu-kvm 13468 qemu mem REG 253,0 92032 101153164 /usr/lib64/librdmacm.so.1.0.0
qemu-kvm 13468 qemu mem REG 253,0 266680 100984135 /usr/lib64/libseccomp.so.2.3.1
qemu-kvm 13468 qemu mem REG 253,0 23800 100826840 /usr/lib64/libsnappy.so.1.1.4
qemu-kvm 13468 qemu mem REG 253,0 135112 100702462 /usr/lib64/liblzo2.so.2.0.0
qemu-kvm 13468 qemu mem REG 253,0 1292416 101027989 /usr/lib64/libgnutls.so.28.41.16
qemu-kvm 13468 qemu mem REG 253,0 201296 100702526 /usr/lib64/libnettle.so.4.7
qemu-kvm 13468 qemu mem REG 253,0 121296 100701724 /usr/lib64/libsasl2.so.3.0.0
qemu-kvm 13468 qemu mem REG 253,0 179296 100768842 /usr/lib64/libpng15.so.15.13.0
qemu-kvm 13468 qemu mem REG 253,0 320984 101017286 /usr/lib64/libpulse.so.0.18.0
qemu-kvm 13468 qemu mem REG 253,0 1033536 100826787 /usr/lib64/libasound.so.2.0.0
qemu-kvm 13468 qemu mem REG 253,0 50712 100702422 /usr/lib64/libnuma.so.1
qemu-kvm 13468 qemu mem REG 253,0 14872 100664425 /usr/lib64/libutil-2.17.so
qemu-kvm 13468 qemu mem REG 253,0 698744 100826854 /usr/lib64/libpixman-1.so.0.34.0
qemu-kvm 13468 qemu mem REG 253,0 174088 100826406 /usr/lib64/libssh2.so.1.0.1
qemu-kvm 13468 qemu mem REG 253,0 20040 100706670 /usr/lib64/libuuid.so.1.3.0
qemu-kvm 13468 qemu mem REG 253,0 99304 100794835 /usr/lib64/libgfxdr.so.0.0.1
qemu-kvm 13468 qemu mem REG 253,0 115088 100794833 /usr/lib64/libgfrpc.so.0.0.1
qemu-kvm 13468 qemu mem REG 253,0 896344 100794837 /usr/lib64/libglusterfs.so.0.0.1
qemu-kvm 13468 qemu mem REG 253,0 150056 100826654 /usr/lib64/libgfapi.so.0.0.0
qemu-kvm 13468 qemu mem REG 253,0 37056 100701754 /usr/lib64/libacl.so.1.1.0
qemu-kvm 13468 qemu mem REG 253,0 5342808 100841989 /usr/lib64/librados.so.2.0.0
qemu-kvm 13468 qemu mem REG 253,0 5789632 100768762 /usr/lib64/librbd.so.1.0.0
qemu-kvm 13468 qemu mem REG 253,0 435120 100842007 /usr/lib64/libcurl.so.4.3.0
qemu-kvm 13468 qemu mem REG 253,0 125336 33843740 /usr/lib64/iscsi/libiscsi.so.2.0.10900
qemu-kvm 13468 qemu mem REG 253,0 6264 100702465 /usr/lib64/libaio.so.1.0.1
qemu-kvm 13468 qemu mem REG 253,0 90664 100701649 /usr/lib64/libz.so.1.2.7
qemu-kvm 13468 qemu mem REG 253,0 155464 100664052 /usr/lib64/ld-2.17.so
qemu-kvm 13468 qemu mem REG 0,9 6936 anon_inode:[vfio-device] (stat: No such file or directory)
qemu-kvm 13468 qemu mem REG 253,0 162552 100706665 /usr/lib64/libsystemd.so.0.6.0
qemu-kvm 13468 qemu mem REG 253,0 83208 100706667 /usr/lib64/libudev.so.1.6.2
qemu-kvm 13468 qemu DEL REG 0,4 37202 /dev/zero
qemu-kvm 13468 qemu DEL REG 0,4 37201 /dev/zero
qemu-kvm 13468 qemu mem REG 0,18 4024 38290 /dev/shm/spice.13468
qemu-kvm 13468 qemu DEL REG 0,4 38287 /dev/zero
qemu-kvm 13468 qemu 0u CHR 1,3 0t0 1028 /dev/null
qemu-kvm 13468 qemu 1w FIFO 0,8 0t0 45255 pipe
qemu-kvm 13468 qemu 2w FIFO 0,8 0t0 45255 pipe
qemu-kvm 13468 qemu 3r CHR 1,9 0t0 1033 /dev/urandom
qemu-kvm 13468 qemu 4u a_inode 0,9 0 6936 [signalfd]
qemu-kvm 13468 qemu 5u a_inode 0,9 0 6936 [eventpoll]
qemu-kvm 13468 qemu 6u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 7u a_inode 0,9 0 6936 [eventpoll]
qemu-kvm 13468 qemu 8u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 9u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 10u unix 0xffff88102b7c1000 0t0 38284 /var/lib/libvirt/qemu/domain-2-ubuntu16.04-2/monitor.sock
qemu-kvm 13468 qemu 11u CHR 5,2 0t0 1158 /dev/ptmx
qemu-kvm 13468 qemu 12u CHR 10,232 0t0 12724 /dev/kvm
qemu-kvm 13468 qemu 13u a_inode 0,9 0 6936 kvm-vm
qemu-kvm 13468 qemu 14u unix 0xffff88102b7c3c00 0t0 38288 socket
qemu-kvm 13468 qemu 15u unix 0xffff88102b7c2800 0t0 38289 socket
qemu-kvm 13468 qemu 16u REG 0,18 4024 38290 /dev/shm/spice.13468
qemu-kvm 13468 qemu 17u IPv4 38293 0t0 TCP 127.0.0.1:5900 (LISTEN)
qemu-kvm 13468 qemu 18u REG 253,1 171825168384 1074520646 /var/lib/libvirt/images/ubuntu16.04-2.img
qemu-kvm 13468 qemu 19u a_inode 0,9 0 6936 kvm-vcpu
qemu-kvm 13468 qemu 20u a_inode 0,9 0 6936 kvm-vcpu
qemu-kvm 13468 qemu 21u a_inode 0,9 0 6936 kvm-vcpu
qemu-kvm 13468 qemu 22u a_inode 0,9 0 6936 kvm-vcpu
qemu-kvm 13468 qemu 23u a_inode 0,9 0 6936 kvm-vcpu
qemu-kvm 13468 qemu 24u a_inode 0,9 0 6936 kvm-vcpu
qemu-kvm 13468 qemu 25u a_inode 0,9 0 6936 kvm-vcpu
qemu-kvm 13468 qemu 26u a_inode 0,9 0 6936 kvm-vcpu
qemu-kvm 13468 qemu 27u unix 0xffff881026898000 0t0 40135 socket
qemu-kvm 13468 qemu 28u unix 0xffff88102689f400 0t0 40136 socket
qemu-kvm 13468 qemu 29u netlink 0t0 40137 KOBJECT_UEVENT
qemu-kvm 13468 qemu 30r FIFO 0,8 0t0 40138 pipe
qemu-kvm 13468 qemu 31w FIFO 0,8 0t0 40138 pipe
qemu-kvm 13468 qemu 32r FIFO 0,8 0t0 40139 pipe
qemu-kvm 13468 qemu 33w FIFO 0,8 0t0 40139 pipe
qemu-kvm 13468 qemu 34u a_inode 0,9 0 6936 [timerfd]
qemu-kvm 13468 qemu 35u CHR 245,0 0t0 22111 /dev/vfio/30
qemu-kvm 13468 qemu 36u CHR 10,196 0t0 11903 /dev/vfio/vfio
qemu-kvm 13468 qemu 37u a_inode 0,9 0 6936 kvm-vfio
qemu-kvm 13468 qemu 38u a_inode 0,9 0 6936 [vfio-device]
qemu-kvm 13468 qemu 39u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 40u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 41u unix 0xffff88102de37000 0t0 40140 /var/lib/libvirt/qemu/domain-2-ubuntu16.04-2/monitor.sock
qemu-kvm 13468 qemu 42u CHR 189,268 0t0 11444 /dev/bus/usb/003/013
qemu-kvm 13468 qemu 43u CHR 189,267 0t0 11441 /dev/bus/usb/003/012
qemu-kvm 13468 qemu 44u unix 0xffff88102d675c00 0t0 47483 socket
qemu-kvm 13468 qemu 45u unix 0xffff88102689a400 0t0 40142 socket
qemu-kvm 13468 qemu 46u unix 0xffff88102d674400 0t0 47488 socket
qemu-kvm 13468 qemu 47u unix 0xffff880e32a7a400 0t0 44457 socket
qemu-kvm 13468 qemu 48u unix 0xffff88102b200c00 0t0 45264 socket
qemu-kvm 13468 qemu 49u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 50u unix 0xffff8810392a1000 0t0 22123 socket
qemu-kvm 13468 qemu 51u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 52u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 53u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 54u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 55u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 56u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 57u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 58u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 59u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 60u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 61u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 62u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 63u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 64u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 65u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 66u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 67u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 68u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 69u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 70u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 71u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 72u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 73u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 74u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 75u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 76u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 77u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 78u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 79u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 80u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 81u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 82u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 83u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 84u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 85u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 86u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 87u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 88u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 89u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 90u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 91u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 92u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 93u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 94u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 95u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 96u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 97u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 98u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 99u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 100u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 101u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 102u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 103u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 104u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 105u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 106u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 107u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 108u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 109u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 110u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 111u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 112u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 113u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 114u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 115u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 116u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 117u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 118u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 119u a_inode 0,9 0 6936 [eventfd]
qemu-kvm 13468 qemu 120u a_inode 0,9 0 6936 [eventfd]
[philipp@kvm1 ~]$ lsusb
Bus 002 Device 002: ID 8087:8000 Intel Corp.
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:8008 Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 003: ID 1058:25da Western Digital Technologies, Inc.
Bus 004 Device 002: ID 2109:8110 VIA Labs, Inc. Hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 007: ID 0557:2419 ATEN International Co., Ltd
Bus 003 Device 004: ID 0557:7000 ATEN International Co., Ltd Hub
Bus 003 Device 015: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port
Bus 003 Device 013: ID 05dc:ba04 Lexar Media, Inc.
Bus 003 Device 012: ID 0bda:0309 Realtek Semiconductor Corp.
Bus 003 Device 009: ID 051d:0002 American Power Conversion Uninterruptible Power Supply
Bus 003 Device 006: ID 1a40:0101 Terminus Technology Inc. Hub
Bus 003 Device 011: ID 045e:000b Microsoft Corp. Natural Keyboard Elite
Bus 003 Device 010: ID 046d:c016 Logitech, Inc. Optical Wheel Mouse
Bus 003 Device 008: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub
Bus 003 Device 005: ID 0451:2046 Texas Instruments, Inc. TUSB2046 Hub
Bus 003 Device 003: ID 05e3:0610 Genesys Logic, Inc. 4-port hub
Bus 003 Device 002: ID 2109:2811 VIA Labs, Inc. Hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
[philipp@kvm1 ~]$ sudo cat /etc/libvirt/qemu/ubuntu16.04-2.xml
<!--
WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE
OVERWRITTEN AND LOST. Changes to this xml configuration should be made using:
virsh edit ubuntu16.04-2
or other application using the libvirt API.
-->
<domain type='kvm'>
<name>ubuntu16.04-2</name>
<uuid>a9590ac8-e532-4dce-b6ef-d3b35c0db865</uuid>
<memory unit='KiB'>8388608</memory>
<currentMemory unit='KiB'>8388608</currentMemory>
<vcpu placement='static' current='8'>12</vcpu>
<os>
<type arch='x86_64' machine='pc-i440fx-rhel7.3.0'>hvm</type>
<boot dev='hd'/>
</os>
<features>
<acpi/>
<apic/>
</features>
<cpu mode='host-model'>
<model fallback='allow'/>
</cpu>
<clock offset='utc'>
<timer name='rtc' tickpolicy='catchup'/>
<timer name='pit' tickpolicy='delay'/>
<timer name='hpet' present='no'/>
</clock>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<pm>
<suspend-to-mem enabled='no'/>
<suspend-to-disk enabled='no'/>
</pm>
<devices>
<emulator>/usr/libexec/qemu-kvm</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='raw'/>
<source file='/var/lib/libvirt/images/ubuntu16.04-2.img'/>
<target dev='vda' bus='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
</disk>
<disk type='file' device='cdrom'>
<driver name='qemu' type='raw'/>
<target dev='hda' bus='ide'/>
<readonly/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
<controller type='pci' index='0' model='pci-root'/>
<controller type='ide' index='0'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
</controller>
<controller type='virtio-serial' index='0'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
</controller>
<controller type='usb' index='0' model='nec-xhci'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
</controller>
<controller type='usb' index='1' model='ich9-ehci1'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x0a' function='0x7'/>
</controller>
<interface type='network'>
<mac address='52:54:00:fc:0f:5e'/>
<source network='hostdev-net0'/>
<model type='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</interface>
<serial type='pty'>
<target port='0'/>
</serial>
<console type='pty'>
<target type='serial' port='0'/>
</console>
<channel type='spicevmc'>
<target type='virtio' name='com.redhat.spice.0'/>
<address type='virtio-serial' controller='0' bus='0' port='1'/>
</channel>
<input type='mouse' bus='ps2'/>
<input type='keyboard' bus='ps2'/>
<graphics type='spice' autoport='yes'>
<listen type='address'/>
<image compression='off'/>
</graphics>
<sound model='ich6'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
</sound>
<video>
<model type='qxl' ram='65536' vram='65536' vgamem='16384' heads='1' primary='yes'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
</video>
<hostdev mode='subsystem' type='usb' managed='yes'>
<source>
<vendor id='0x05dc'/>
<product id='0xba04'/>
</source>
<address type='usb' bus='0' port='3'/>
</hostdev>
<hostdev mode='subsystem' type='usb' managed='yes'>
<source>
<vendor id='0x0bda'/>
<product id='0x0309'/>
</source>
<address type='usb' bus='0' port='4'/>
</hostdev>
<hostdev mode='subsystem' type='usb' managed='yes'>
<source>
<vendor id='0x067b'/>
<product id='0x2303'/>
</source>
<address type='usb' bus='1' port='1'/>
</hostdev>
<redirdev bus='usb' type='spicevmc'>
<address type='usb' bus='0' port='1'/>
</redirdev>
<redirdev bus='usb' type='spicevmc'>
<address type='usb' bus='0' port='2'/>
</redirdev>
<memballoon model='virtio'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/>
</memballoon>
</devices>
</domain>
[philipp@kvm1 ~]$
and here’s what I see on the guest:
philipp@ubuntu16:~$ lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 0bda:0309 Realtek Semiconductor Corp.
Bus 001 Device 002: ID 05dc:ba04 Lexar Media, Inc.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
philipp@ubuntu16:~$
I’m not sure what I’m missing.
How do I verify that the parameters in the .xml domain definition are correct, and that they’re resulting in the correct args being passed to qemu-kvm when it gets exec’d?
And why do the args:
-device usb-host,hostbus=3,hostaddr=15,id=hostdev3,bus=usb1.0,port=1
seem to be silently ignored? I understand that USB is inherently pluggable and hence the device may or may not be present at the time that Qemu gets kicked off…
Looking at https://github.com/esminc/qemu/blob/master/Source/device-qemu/android/android-goldfish-2.6.29/Documentation/usb/usb-serial.txt it claims that the PL2303 driver is supported.
What am I missing? I need to access serial ports from several of my guest VMs, and my host doesn’t have built-in serial ports to USB dongles are my only option.
Thanks,
-Philip
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