ubuntu 经常出现创建kvm虚机时报错ERROR Cannot get interface MTU on 'br0': No such device

admin

root@compute01:/usr/src# virt-install --name=Windows2019_x86  --ram 8192 --vcpus=4 --disk path=/usr/src/Windows2019-x86.qcow2,format=qcow2,size=15,bus=virtio --accelerate --cdrom /usr/src/cn_windows_server_2019_x64_dvd_2d80e042.iso --vnc --vncport=5906 --vnclisten=0.0.0.0 --network bridge=br0,model=virtio --noautoconsole
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Starting install...
2 b9 W- W5 q0 U! G+ @% X4 cERROR    Cannot get interface MTU on 'br0': No such device
9 E5 H/ T+ j6 d( ]+ HDomain installation does not appear to have been successful.
8 [4 _' _0 E% k, GIf it was, you can restart your domain by running:
  virsh --connect qemu:///system start Windows2019_x86
otherwise, please restart your installation.

6 {$ P! u2 J. s/ e1 z创建失败：有问题，检查网卡：
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root@compute01:/usr/src# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2 w% @' ~% z; e2 |* V+ A; _    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
! m' k! U6 T1 B8 x4 g$ s0 q/ |    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
4 S5 U( D8 ~  [& J" w. [6 `* g/ X2: enp8s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether 00:e0:4c:68:10:89 brd ff:ff:ff:ff:ff:ff
5 F8 |/ L* x8 P3: enp9s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether d8:50:e6:4a:41:b2 brd ff:ff:ff:ff:ff:ff
: F# f1 y$ q* l# v# Z2 V    inet 198.192.168.66/24 brd 198.192.168.255 scope global enp9s0
* z" u. x) r1 l7 ~; {  A       valid_lft forever preferred_lft forever
2 K! t* n" s" I! m* o6 X. U    inet6 fe80::da50:e6ff:fe4a:41b2/64 scope link
# {( F6 f) R$ J. Y% I1 s% P$ }6 M. }       valid_lft forever preferred_lft forever
3 L; |" _. x  R. w8 S; I+ N4: enp2s0f0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether 04:25:c5:2a:57:13 brd ff:ff:ff:ff:ff:ff
    inet 192.168.8.66/24 brd 192.168.8.255 scope global enp2s0f0
: r; q( y( U% }" F: O2 Q4 |/ d       valid_lft forever preferred_lft forever
    inet6 fe80::625:c5ff:fe2a:5713/64 scope link
7 ^8 e: r4 e9 @       valid_lft forever preferred_lft forever
5: enp2s0f1: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN group default qlen 1000
    link/ether 04:25:c5:2a:57:14 brd ff:ff:ff:ff:ff:ff
11: vnet2: <BROADCAST,MULTICAST> mtu 1500 qdisc fq_codel state DOWN group default qlen 1000
    link/ether fe:54:00:90:65:d2 brd ff:ff:ff:ff:ff:ff

重新配置网络：

8 j9 J* l# m: L% `root@compute01:/usr/src# netplan apply

** (generate:6407): WARNING **: 13:00:50.842: `gateway4` has been deprecated, use default routes instead.
( n5 Y$ q6 j* p" H* f0 zSee the 'Default routes' section of the documentation for more details.
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** (process:6405): WARNING **: 13:00:51.287: `gateway4` has been deprecated, use default routes instead.
* W  h' f' |& y" G" J2 p6 o1 j5 XSee the 'Default routes' section of the documentation for more details.
7 A5 g( `6 w# D( Z6 U9 @* _
5 m4 d6 r4 e. A2 [0 j** (process:6405): WARNING **: 13:00:51.298: `gateway4` has been deprecated, use default routes instead.
2 ^1 A/ h1 \$ q4 Q* E; K4 S: f; YSee the 'Default routes' section of the documentation for more details.

  r6 u" O8 t( l0 {  z" [8 l** (process:6405): WARNING **: 13:00:51.684: `gateway4` has been deprecated, use default routes instead.
See the 'Default routes' section of the documentation for more details.

** (process:6405): WARNING **: 13:00:51.685: `gateway4` has been deprecated, use default routes instead.
See the 'Default routes' section of the documentation for more details.

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$ ]0 H1 o! U' B. s: Q4 j& Z! E$ n再重试，问题解决。
root@compute01:/usr/src# virt-install --name=Windows2019_x86  --ram 8192 --vcpus=4 --disk path=/usr/src/Windows2019-x86.qcow2,format=qcow2,size=15,bus=virtio --accelerate --cdrom /usr/src/cn_windows_server_2019_x64_dvd_2d80e042.iso --vnc --vncport=5906 --vnclisten=0.0.0.0 --network bridge=br0,model=virtio --noautoconsole
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" X( k# Y! _2 C% `+ X& h: E9 LStarting install...
Creating domain...                                                                                                                                         |    0 B  00:00:00     
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: Q, Z0 J1 G0 h6 t# h4 IDomain is still running. Installation may be in progress.
You can reconnect to the console to complete the installation process.
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admin

ubuntu server 版本经常出现这样的问题。

# lsb_release -a
& P# }& |7 m7 g% @! o( h# K& `No LSB modules are available.
# Q! A  \+ @) ]; Z) iDistributor ID:        Ubuntu
Description:        Ubuntu 22.04.2 LTS
Release:        22.04
Codename:        jammy

不太成熟的版本。