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发表于 2018-12-8 17:56:58
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virsh start vm1368544020451:" }1 Y. _5 l0 w: {- [
' ?& B! b' f/ U1 \6 g# U, a error: Failed to start domain vm1368544020451
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error: internal error process exited while connecting to monitor: kvm: -drive file=/dev/sp1368155439693/v1368544020461,if=none,id=drive-virtio-disk0,format=qcow2: could not open disk image /dev/sp1368155439693/v1368544020461: Invalid argument; v1 K2 f! _- k- n; P" ]3 f9 H
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镜像格式错误，用qemu-img info 检查镜像和xml配置文件中指定的type是否一致。
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" T& J! ^0 e3 J# Y2 Jerror: Failed to start domain vm0
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error: internal error process exited while connecting to monitor: Could not access KVM kernel module: No such file or directory
: z; n- V/ @$ {! `; tfailed to initialize KVM: No such file or directory/ t# t5 K8 i6 F0 O
No accelerator found!
1 k% D, j) j: F5 s( z上面的提示信息就是因为QEMU在初始化阶段因为无法找到kvm内核模块。' L2 r4 X/ ^2 q5 O
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sudo modprobe kvm #载入指定的模块0 T9 z! |. ^3 _5 n f
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重启电脑，进入bios界面，设置advance选项里面的virtualization标签为Enabled$ C7 @# O. i7 s9 l: b
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通过命令 lsmod | grep kvm #显示已载入的模块( ~( q5 j; V9 t5 r
5 `4 R0 b# r& q. P 虚拟机迁移：- t# W6 f( ] w: z/ Y
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# virsh migrate --live 1 qemu+tcp://192.168.0.121 --p2p --tunnelled --unsafe
7 @$ K! V4 x5 ?5 Terror: operation failed: Failed to connect to remote libvirt URI qemu+tcp://192.168.0.121（在URI后面加上/system，‘system’相当于root用户的访问权限)
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y4 {. s7 `+ \7 j5 ?7 ~ G% u#virsh migrate --live 2 qemu+tcp://192.168.0.121/system --p2p --tunnelled
! z0 T8 Z. [4 n9 q error: Unsafe migration: Migration may lead to data corruption if disks use cache != none（加上--unsafe参数）
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#virsh migrate --live 2 qemu+tcp://192.168.0.121/system --p2p --tunnelled --unsafe
" t7 P) y& _- a; v% j+ derror: Timed out during operation: cannot acquire state change lock (启动虚拟机有时也会遇此错误）,需要重启libvirtd进程
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virsh：
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error: Failed to connect socket to '/var/run/libvirt/libvirt-sock': Connection refused(libvirtd 进程没有启动，libvirtd是一个监听客户端请求的进程）" `6 s8 n$ w6 K- p; S0 S1 k
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$ virsh -c qemu:///system list+ ]& S/ y5 L& @, {/ w
error: Failed to connect socket to '/var/run/libvirt/libvirt-sock': Permission denied
& [5 l7 u# V# u' F2 w# Perror: failed to connect to the hypervisor2 z& y( `2 I. z" J7 b
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（当前用户没有权限，修改/etc/libvirt/libvirtd.conf,unix_sock_rw_perms = 0777,使所有用户都有权限读写）+ E; j! `1 p* @3 G- w
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启动libvirtd进程出错：* y0 ~; Q, o: M5 j9 L' D" p
3 v; J' n' z+ a C /usr/local/sbin/libvirtd -d -l --config /usr/local/etc/libvirt/libvirtd.conf （编译安装的启动方式）/ e6 F9 t9 m( e- e. L
error：/usr/local/sbin/libvirtd: initialization failed
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try to install libpcap-devel RPM and rebuild libvirt http://comments.gmane.org/gmane.comp.emulators.libvirt/58218
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J- m( x, C! A, ]( n* Lapt-get install libpcap-dev
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& L" \% u9 o% U1 t# \5 t6 p8 q上面的方法好像都没有效果，但是尝试了http://wiki.libvirt.org/page/The_daemon_cannot_be_started说的，把配置文件里的
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: b: Y" V) E: Vlisten_tls = 0注释取消（更奇怪的问题，在我的客户端链接不对）
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启动虚拟机：Connection reset by peer/ M+ v/ W! V6 z" `+ @3 f; o5 R/ T
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virsh start vm1355991767186
$ U9 G. N7 A) W% _error: Failed to start domain vm1355991767186
! [+ y" q; {, v, l# }& verror: Unable to read from monitor: Connection reset by peer' p, m7 R4 k6 J( J7 r: H! W
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还有可能是这样提示：+ O" @2 Q! c7 Z7 c2 b/ F5 F
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error: internal error process exited while connecting to monitor: Failed to allocate 16332619776 B: Cannot allocate memory
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1 j0 h5 U0 n/ B& M/ r这个问题可能是因为为VM分配的内存过大（甚至超过的物理主机的内存大小）0 V8 G4 V3 C2 ]% O8 Y
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Unable to load library 'virt': libvirt.so: cannot open shared object file: No such file or directory
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' k& [, x$ S1 U; S( Flinux 环境：
( K' y( e1 j3 k' C- i" g9 R/ ^, `7 ]* K ln -s /usr/lib/libvirt.so.0 /usr/lib/libvirt.so
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# h" b+ I: O# U7 A 将libvirt-0.dll改名为virt.dll
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# virsh undefine vm13546958949903 N9 ^$ |9 K3 N0 y9 l9 Y
error: Refusing to undefine while domain managed save image exists
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http://www.redhat.com/archives/l ... -July/msg01219.html+ U L& n& [! O# J* h# h
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: W; s7 A# B, @5 O0 F" q. @' a解决办法：virsh undefine $domain --managed-save
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在centos下面Define虚拟机时，确实没有/usr/bin/kvm，加软链接. w% v4 r" p! B7 U' L j+ P
error: Failed to define domain from xxx.xml
4 f2 _9 J* Z/ Merror: Cannot find QEMU binary /usr/bin/kvm: No such file or directory
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解决办法：ln -s /usr/libexec/qemu-kvm /usr/bin/kvm/ F6 q& K1 P7 K& a4 M; z5 W
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发表于 2018-12-2 00:02:38