virsh kvm虚机动态添加磁盘等设备

admin

动态挂载硬盘

6 N% `5 Z$ l: ?5 Gvirsh list
7 M( M4 o1 ?7 B: F: x8 ]+ S Id   Name              State
& ^% M% V5 I3 c& z---------------------------------

9    Windows2019_x86   running



编辑挂在硬盘xml
& U; @2 x4 v. Evim attach.xml
8 y7 X# v- s* B9 N; ?( u7 O8 e<disk type='file' device='disk'>
8 g1 N; W) d  O8 q7 |, Q  <driver name='qemu' type='qcow2'/>
  <source file='/usr/src/CloudbaseInitSetup_1_1_2_x86.msi.iso'/>
  <target dev='sdc' bus='virtio'/>
</disk>
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使用命令挂载
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' b8 Z: u8 e, n$ {+ fsudo virsh attach-device Windows2019_x86 attach.xml
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virsh attach-device Windows2019_x86 attach.xml
+ q: E% c+ |  a9 u# j1 F# v: D# Oerror: Failed to attach device from attach.xml
error: internal error: unable to execute QEMU command 'blockdev-add': Image is not in qcow2 format
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: R$ K" m6 M( e修改
vim attach.xml
<disk type='file' device='disk'>
* o. i; U4 y$ ^  <driver name='qemu' type='raw'/>
  <source file='/usr/src/CloudbaseInitSetup_1_1_2_x86.msi.iso'/>
  <target dev='sdc' bus='virtio'/>
</disk>
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( z7 }5 {7 l( s7 J# A7 groot@compute01:/usr/src# virsh attach-device Windows2019_x86 attach.xml
Device attached successfully
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+ N, p" n% G) e! D为了马上识别到文件信息：

9 d; e1 N3 j% _8 t# V  U  \" j3 w <disk type='file' device='cdrom'>
& `+ x" b1 I- P" D5 t   <driver name='qemu' type='raw'/>
   <source file='/usr/src/CloudbaseInitSetup_1_1_2_x86.msi.iso'/>
" b! O0 \1 S" f   <target dev='sdc' bus='sata'/>
   <readonly/>
   <address type='drive' controller='0' bus='0' target='0' unit='1'/>
</disk>


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admin

virsh detach-device Windows2019_x86 attach.xml
1 V2 L( ^! P& XDevice detached successfully

<disk type='file' device='cdrom'>
% o% d5 s  Y! h& q   <driver name='qemu' type='raw'/>
   <source file='/usr/src/CloudbaseInitSetup_1_1_2_x86.msi.iso'/>
   <target dev='sdc' bus='sata'/>
0 F0 l3 v; ?1 y0 `; Q2 r4 E  N   <readonly/>
   <address type='drive' controller='0' bus='0' target='0' unit='1'/>
3 a6 J  s' |4 A( N </disk>
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admin

virsh attach-device Windows2019_x86 attach.xml
error: Failed to attach device from attach.xml
error: unsupported configuration: readonly sata disks are not supported

admin

root@compute01:~# virsh change-media Windows2019_x86 sdb --eject
; W# L5 d. j& F$ s4 [Successfully ejected media.
root@compute01:~# virsh change-media Windows2019_x86 sdb --
( i( y: M/ |% Q! T- I& P--block      --config     --current    --eject      --force      --insert     --live       --print-xml  --source     --update     
# s2 q7 E" _% A( G2 Sroot@compute01:~# virsh change-media Windows2019_x86 sdb --
% }1 g. h3 y& _! S3 T2 E/ u8 ]--block      --config     --current    --eject      --force      --insert     --live       --print-xml  --source     --update     
* j# _) m' ~8 M4 }. S% w5 yroot@compute01:~# virsh change-media Windows2019_x86 sdb --insert /usr/src/CloudbaseInitSetup_1_1_2_x86.msi.iso
1 t6 x0 M( \  r0 P7 l* {: }Successfully inserted media.
4 u. p% L  r( W1 ~+ T! C9 G1 yroot@compute01:~#

终于用命令解决了。

admin

root@compute01:/usr/src# virsh change-media Windows2019_x86 sdb --insert /usr/src/CloudbaseInitSetup.iso
error: The disk device 'sdb' already has media

- _/ B6 g6 G1 X4 ^9 e6 L# Kroot@compute01:/usr/src# virsh change-media Windows2019_x86 sdb --eject
Successfully ejected media.
" b, O" V' `; ^root@compute01:/usr/src# virsh change-media Windows2019_x86 sdb --insert /usr/src/CloudbaseInitSetup.iso
+ K6 b! v( X2 KSuccessfully inserted media.
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