【问题】
折腾：
期间，去通过QEMU启动内核，结果出错：
crifan@ubuntu:etc$ sudo /opt/qemu/bin/qemu-system-arm -M versatilepb -nographic -net nic -net tap,ifname=tap0 -kernel /home/crifan/develop/crosscompile/uboot/u-boot-2013.07/u-boot /sbin/ifdown: interface eth0 not configured /etc/qemu-ifup: 19: /etc/qemu-ifup: /usr/sbin/openvpn: not found /etc/qemu-ifup: 24: /etc/qemu-ifup: /usr/sbin/brctl: not found /etc/qemu-ifup: 25: /etc/qemu-ifup: /usr/sbin/brctl: not found /etc/qemu-ifup: 26: /etc/qemu-ifup: /usr/sbin/brctl: not found /etc/qemu-ifup: 30: /etc/qemu-ifup: /usr/sbin/brctl: not found SIOCSIFADDR: No such device br0: ERROR while getting interface flags: No such device SIOCSIFNETMASK: No such device SIOCSIFBRDADDR: No such device br0: ERROR while getting interface flags: No such device SIOCADDRT: Network is unreachable /etc/qemu-ifup: 39: /etc/qemu-ifup: /sbin/service: not found /etc/qemu-ifup: could not launch network script qemu-system-arm: -net tap,ifname=tap0: Device 'tap' could not be initialized
即：
| /etc/qemu-ifup: 19: /etc/qemu-ifup: /usr/sbin/openvpn: not found |
【解决过程】
1.去确认了普通用户和sudo都有eth0：
crifan@ubuntu:qemu$ ifconfig
eth0 Link encap:Ethernet HWaddr 00:0c:29:e4:c8:06
inet6 addr: fe80::20c:29ff:fee4:c806/64 Scope:Link
UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1
RX packets:1019 errors:0 dropped:0 overruns:0 frame:0
TX packets:579 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:812145 (812.1 KB) TX bytes:80433 (80.4 KB)
Interrupt:19 Base address:0x2000
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:195 errors:0 dropped:0 overruns:0 frame:0
TX packets:195 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:29594 (29.5 KB) TX bytes:29594 (29.5 KB)
crifan@ubuntu:qemu$ sudo ifconfig
eth0 Link encap:Ethernet HWaddr 00:0c:29:e4:c8:06
inet6 addr: fe80::20c:29ff:fee4:c806/64 Scope:Link
UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1
RX packets:1019 errors:0 dropped:0 overruns:0 frame:0
TX packets:579 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:812145 (812.1 KB) TX bytes:80433 (80.4 KB)
Interrupt:19 Base address:0x2000
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:195 errors:0 dropped:0 overruns:0 frame:0
TX packets:195 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:29594 (29.5 KB) TX bytes:29594 (29.5 KB)2.然后突然发现：
/usr/sbin/openvpn: not found
很明显，没找到。
所以去看看：
crifan@ubuntu:qemu$ ls /usr/sbin/ aa-status cupsreject install-docs pppd update-default-aspell accept cytune install-info pppdump update-default-ispell accessdb delgroup install-sgmlcatalog pppoeconf update-default-wordlist acpid deluser invoke-rc.d pppoe-discovery update-dictcommon-aspell addgroup dmidecode ip6tables-apply pppstats update-dictcommon-hunspell add-shell dnsmasq iptables-apply pptp update-fonts-alias adduser dpkg-divert irqbalance pptpsetup update-fonts-dir alsactl dpkg-preconfigure ispell-autobuildhash pwck update-fonts-scale anacron dpkg-reconfigure kerneloops pwconv update-grub apparmor_status dpkg-statoverride laptop-detect pwunconv update-grub2 aptd e2freefrag ldattach radeontool update-grub-gfxpayload arp e4defrag lightdm readprofile update-gsfontmap arpd fdformat lightdm-session reject update-icon-caches aspell-autobuildhash filefrag locale-gen remove-default-ispell update-icon-caches.gtk2 avahi-autoipd gconf-schemas logrotate remove-default-wordlist update-inetd avahi-daemon gnome-menus-blacklist lpadmin remove-shell update-info-dir avivotool groupadd lpc rfkill update-initramfs bccmd groupdel lpdomatic rmt update-java-alternatives biosdecode groupmod lpinfo rmt-tar update-locale bluetoothd grpck lpmove rsyslogd update-mime chat grpconv luksformat rtcwake update-passwd chgpasswd grpunconv make-ssl-cert rtkitctl update-rc.d chpasswd grub-bios-setup mkinitramfs safe_finger update-software-center chroot grub-install mklost+found saned update-usbids ck-log-system-restart grub-mkconfig mksmbpasswd select-default-ispell update-xmlcatalog ck-log-system-start grub-mkdevicemap modem-manager select-default-wordlist upgrade-from-grub-legacy ck-log-system-stop grub-mknetdir netscsid service usb_modeswitch console-kit-daemon grub-probe NetworkManager setvesablank usb_modeswitch_dispatcher cpgr grub-reboot newusers smbd usbmuxd cppw grub-set-default nmbd tarcat useradd cracklib-check guest-account nologin tcpd userdel cracklib-format hciattach ntpdate tcpdchk usermod cracklib-packer hciconfig ntpdate-debian tcpdmatch uuidd cracklib-unpacker hciemu ownership tcpdump validlocale create-cracklib-dict hplj1000 pam-auth-update toshsat1800-irdasetup vbetool cron hplj1005 pam_getenv try-from vcstime cupsaccept hplj1018 pam_timestamp_check tunelp vigr cupsaddsmb hplj1020 paperconfig tzconfig vipw cups-browsed hpljP1005 pm-hibernate ufw visudo cupsctl hpljP1006 pm-powersave unity-greeter vmtoolsd cupsd hpljP1007 pm-suspend update-alternatives vmware-checkvm cupsdisable hpljP1008 pm-suspend-hybrid update-apt-xapian-index vmware-rpctool cupsenable hpljP1505 popcon-largest-unused update-ca-certificates vmware-vmblock-fuse cupsfilter hpssd popularity-contest update-catalog vpddecode cups-genppdupdate iconvconfig pppconfig update-cracklib zic crifan@ubuntu:qemu$
所以的确是没有openvpn。
3.然后注意到之前的教程：
中说的那句：
| make two files: qemu-ifup and qemu-ifdown, but do not need openvpn line |
所以，再去修改之前自己此处的qemu-ifdown把openvpn去掉：
#!/bin/sh # # Script to bring down and delete bridge br0 when QEMU exits # # Bring down eth0 and br0 # /sbin/ifdown eth0 /sbin/ifdown br0 /sbin/ifconfig br0 down # # Delete the bridge # /usr/sbin/brctl delbr br0 # # bring up eth0 in "normal" mode # /sbin/ifconfig eth0 -promisc /sbin/ifup eth0 # # delete the tap device # #/usr/sbin/openvpn --rmtun --dev $1 # # start firewall again # /sbin/service firestarter start
同时也把ifup中的openvpn去掉：
#!/bin/sh # # script to bring up the tun device in QEMU in bridged mode # first parameter is name of tap device (e.g. tap0) # # some constants specific to the local host - change to suit your host # ETH0IPADDR=192.168.0.3 GATEWAY=192.168.0.1 BROADCAST=192.168.0.255 # # First take eth0 down, then bring it up with IP address 0.0.0.0 # /sbin/ifdown eth0 /sbin/ifconfig eth0 0.0.0.0 promisc up # # Bring up the tap device (name specified as first argument, by QEMU) # #/usr/sbin/openvpn --mktun --dev $1 --user `id -un` /sbin/ifconfig $1 0.0.0.0 promisc up # # create the bridge between eth0 and the tap device # /usr/sbin/brctl addbr br0 /usr/sbin/brctl addif br0 eth0 /usr/sbin/brctl addif br0 $1 # # only a single bridge so loops are not possible, turn off spanning tree protocol # /usr/sbin/brctl stp br0 off # # Bring up the bridge with ETH0IPADDR and add the default route # /sbin/ifconfig br0 $ETH0IPADDR netmask 255.255.255.0 broadcast $BROADCAST /sbin/route add default gw $GATEWAY # # stop firewall - comment this out if you don't use Firestarter # /sbin/service firestarter stop
4.然后把修改后的拷贝到etc下：
crifan@ubuntu:ifup_ifdown$ gedit qemu-ifdown crifan@ubuntu:ifup_ifdown$ sudo cp qemu-ifup qemu-ifdown /etc/ crifan@ubuntu:ifup_ifdown$ gedit qemu-ifup crifan@ubuntu:ifup_ifdown$ sudo cp qemu-ifup /etc/
再重新去运行，看看结果，结果还有其他问题：
crifan@ubuntu:ifup_ifdown$ sudo /opt/qemu/bin/qemu-system-arm -M versatilepb -nographic -net nic -net tap,ifname=tap0 -kernel /home/crifan/develop/crosscompile/uboot/u-boot-2013.07/u-boot /sbin/ifdown: interface eth0 not configured /etc/qemu-ifup: 24: /etc/qemu-ifup: /usr/sbin/brctl: not found /etc/qemu-ifup: 25: /etc/qemu-ifup: /usr/sbin/brctl: not found /etc/qemu-ifup: 26: /etc/qemu-ifup: /usr/sbin/brctl: not found /etc/qemu-ifup: 30: /etc/qemu-ifup: /usr/sbin/brctl: not found SIOCSIFADDR: No such device br0: ERROR while getting interface flags: No such device SIOCSIFNETMASK: No such device SIOCSIFBRDADDR: No such device br0: ERROR while getting interface flags: No such device SIOCADDRT: Network is unreachable /etc/qemu-ifup: 39: /etc/qemu-ifup: /sbin/service: not found /etc/qemu-ifup: could not launch network script qemu-system-arm: -net tap,ifname=tap0: Device 'tap' could not be initialized
即，
/usr/sbin/brctl: not found
的错误。
5.结果去一搜，发现貌似brctl，也是和openvpn相关的东西。
然后再去掉试试：
ipdown：
#!/bin/sh # # Script to bring down and delete bridge br0 when QEMU exits # # Bring down eth0 and br0 # /sbin/ifdown eth0 /sbin/ifdown br0 /sbin/ifconfig br0 down # # Delete the bridge # #/usr/sbin/brctl delbr br0 # # bring up eth0 in "normal" mode # /sbin/ifconfig eth0 -promisc /sbin/ifup eth0 # # delete the tap device # #/usr/sbin/openvpn --rmtun --dev $1 # # start firewall again # /sbin/service firestarter start
ifup：
#!/bin/sh # # script to bring up the tun device in QEMU in bridged mode # first parameter is name of tap device (e.g. tap0) # # some constants specific to the local host - change to suit your host # ETH0IPADDR=192.168.0.3 GATEWAY=192.168.0.1 BROADCAST=192.168.0.255 # # First take eth0 down, then bring it up with IP address 0.0.0.0 # /sbin/ifdown eth0 /sbin/ifconfig eth0 0.0.0.0 promisc up # # Bring up the tap device (name specified as first argument, by QEMU) # #/usr/sbin/openvpn --mktun --dev $1 --user `id -un` /sbin/ifconfig $1 0.0.0.0 promisc up # # create the bridge between eth0 and the tap device # #/usr/sbin/brctl addbr br0 #/usr/sbin/brctl addif br0 eth0 #/usr/sbin/brctl addif br0 $1 # # only a single bridge so loops are not possible, turn off spanning tree protocol # #/usr/sbin/brctl stp br0 off # # Bring up the bridge with ETH0IPADDR and add the default route # /sbin/ifconfig br0 $ETH0IPADDR netmask 255.255.255.0 broadcast $BROADCAST /sbin/route add default gw $GATEWAY # # stop firewall - comment this out if you don't use Firestarter # /sbin/service firestarter stop
6.然后再去试试，至少解决了此处的问题，没有openvpn相关的错误了：
【总结】
此处，当出现：
/etc/qemu-ifup: 19: /etc/qemu-ifup: /usr/sbin/openvpn: not found |
应该还是参考QEMU教程中，把相关的openvpn的东西，都去掉，包括openvpn和brctl。
结果继续还是剩下的那些“SIOCSIFADDR: No such device ”错误：
【未解决】Ubuntu下用QEMU启动内核时出错：SIOCSIFADDR: No such device
转载请注明：在路上 » 【已解决】Ubuntu下QEMU启动内核时出错：/etc/qemu-ifup: 19: /etc/qemu-ifup: /usr/sbin/openvpn: not found