virsh kvm虚机动态添加磁盘等设备

admin

动态挂载硬盘

8 u* E* z3 ?  y8 N1 f# u5 p8 B. F& ~: zvirsh list
Id   Name              State
---------------------------------
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- j) t" R3 p+ f2 q( e* ~. A 9    Windows2019_x86   running



编辑挂在硬盘xml
vim attach.xml
& x/ y. Z9 q; E& |* b  }6 w5 j<disk type='file' device='disk'>
  <driver name='qemu' type='qcow2'/>
  <source file='/usr/src/CloudbaseInitSetup_1_1_2_x86.msi.iso'/>
  <target dev='sdc' bus='virtio'/>
4 l* p" V% a( g  y4 e% |/ n8 L5 t</disk>
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使用命令挂载
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  G  E1 G% Q6 e. F6 y$ N) isudo virsh attach-device Windows2019_x86 attach.xml
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1 p$ S% T2 j/ n) c$ avirsh attach-device Windows2019_x86 attach.xml
error: Failed to attach device from attach.xml
. f: T& _, ~& T& P+ kerror: internal error: unable to execute QEMU command 'blockdev-add': Image is not in qcow2 format
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修改
7 O1 T: T- T0 V4 [0 z- C7 tvim attach.xml
<disk type='file' device='disk'>
  <driver name='qemu' type='raw'/>
; ~) o# h; V+ K% [, ]  <source file='/usr/src/CloudbaseInitSetup_1_1_2_x86.msi.iso'/>
' o) p9 |/ ~1 \+ K% T. @  <target dev='sdc' bus='virtio'/>
</disk>

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root@compute01:/usr/src# virsh attach-device Windows2019_x86 attach.xml
0 F- ^9 k( i6 s) D8 A/ _8 ~0 @Device attached successfully

4 q( _7 Y$ ~! K: Y5 c# r5 y为了马上识别到文件信息：
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" ^' n! `1 ?5 K* B, p* v <disk type='file' device='cdrom'>
# n, c) E8 q# Z) J0 w" \( g4 [   <driver name='qemu' type='raw'/>
   <source file='/usr/src/CloudbaseInitSetup_1_1_2_x86.msi.iso'/>
   <target dev='sdc' bus='sata'/>
   <readonly/>
1 T" _. A: |5 w$ x: [4 x) T   <address type='drive' controller='0' bus='0' target='0' unit='1'/>
</disk>

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admin

virsh detach-device Windows2019_x86 attach.xml
Device detached successfully
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) d/ W% N+ i( J2 W <disk type='file' device='cdrom'>
9 }. ]( [0 d2 C% n4 A4 \' m7 o1 u   <driver name='qemu' type='raw'/>
- u* Z0 R3 J/ J' W   <source file='/usr/src/CloudbaseInitSetup_1_1_2_x86.msi.iso'/>
   <target dev='sdc' bus='sata'/>
7 J2 O( h! M0 z  N# N* H: x   <readonly/>
2 p3 t. s# l0 w5 b9 {% j; x   <address type='drive' controller='0' bus='0' target='0' unit='1'/>
) p/ M/ v: I0 F* N' { </disk>

# r0 s- v" z. z3 G# s" [4 m5 J

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
Successfully ejected media.
) U+ g& Y  z0 Croot@compute01:~# virsh change-media Windows2019_x86 sdb --
* K- o+ W! f" H/ g* z- p--block      --config     --current    --eject      --force      --insert     --live       --print-xml  --source     --update     
) n  |) k: L. ^* @2 Zroot@compute01:~# virsh change-media Windows2019_x86 sdb --
. ?- }3 G4 ]* `* D! Q* ]3 E--block      --config     --current    --eject      --force      --insert     --live       --print-xml  --source     --update     
" j- ^' o$ ?6 B( aroot@compute01:~# virsh change-media Windows2019_x86 sdb --insert /usr/src/CloudbaseInitSetup_1_1_2_x86.msi.iso
Successfully inserted media.
8 |3 o# S) H& S: kroot@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
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; C1 U9 `6 J' |  G2 ?/ o; ^root@compute01:/usr/src# virsh change-media Windows2019_x86 sdb --eject
Successfully ejected media.
root@compute01:/usr/src# virsh change-media Windows2019_x86 sdb --insert /usr/src/CloudbaseInitSetup.iso
Successfully inserted media.
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