[libvirt-users] correct way to hot-add cdrom ?

[Alexandr Gluzskiy]

Alexandr писал 2013-12-02 09:36:
> Good day to all. i have problems with cdrom hot adding code. currently
> i using virDomainAttachDevice with type=file, device=cdrom, dev=hdc,
> this code works for machine with one ide hdd and one ide cdrom, but
> this not work for machine with only one ide hdd, and i looking for
> solution to hot add cdrom to machine independent of existing devices
> or i need way to determinate which target device can be attached to
> vm. thanks in advance for any help.
> 
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i have tested following

evil-desktop sss # virsh -d 0 attach-disk fuck 
/home/sss/cd/mhdd32ver4.6.iso vdb --type cdrom
attach-disk: domain(optdata): fuck
attach-disk: source(optdata): /home/sss/cd/mhdd32ver4.6.iso
attach-disk: target(optdata): vdb
attach-disk: type(optdata): cdrom
attach-disk: found option <domain>: fuck
attach-disk: <domain> trying as domain NAME
error: Failed to attach disk
error: internal error: No device with bus 'virtio' and target 'vdb'

evil-desktop sss # virsh -d 0 attach-disk fuck 
/home/sss/cd/mhdd32ver4.6.iso vda --type cdrom
attach-disk: domain(optdata): fuck
attach-disk: source(optdata): /home/sss/cd/mhdd32ver4.6.iso
attach-disk: target(optdata): vda
attach-disk: type(optdata): cdrom
attach-disk: found option <domain>: fuck
attach-disk: <domain> trying as domain NAME
error: Failed to attach disk
error: internal error: No device with bus 'virtio' and target 'vda'

evil-desktop sss # virsh -d 0 attach-disk fuck 
/home/sss/cd/mhdd32ver4.6.iso sda --type cdrom
attach-disk: domain(optdata): fuck
attach-disk: source(optdata): /home/sss/cd/mhdd32ver4.6.iso
attach-disk: target(optdata): sda
attach-disk: type(optdata): cdrom
attach-disk: found option <domain>: fuck
attach-disk: <domain> trying as domain NAME
error: Failed to attach disk
error: internal error: No device with bus 'scsi' and target 'sda'

evil-desktop sss # virsh -d 0 attach-disk fuck 
/home/sss/cd/mhdd32ver4.6.iso sda --type cdrom --mode readonly
attach-disk: domain(optdata): fuck
attach-disk: source(optdata): /home/sss/cd/mhdd32ver4.6.iso
attach-disk: target(optdata): sda
attach-disk: type(optdata): cdrom
attach-disk: mode(optdata): readonly
attach-disk: found option <domain>: fuck
attach-disk: <domain> trying as domain NAME
error: Failed to attach disk
error: internal error: No device with bus 'scsi' and target 'sda'

evil-desktop sss # virsh -d 0 attach-disk fuck 
/home/sss/cd/mhdd32ver4.6.iso vda --type cdrom --mode readonly
attach-disk: domain(optdata): fuck
attach-disk: source(optdata): /home/sss/cd/mhdd32ver4.6.iso
attach-disk: target(optdata): vda
attach-disk: type(optdata): cdrom
attach-disk: mode(optdata): readonly
attach-disk: found option <domain>: fuck
attach-disk: <domain> trying as domain NAME
error: Failed to attach disk
error: internal error: No device with bus 'virtio' and target 'vda'

evil-desktop sss # virsh -d 0 attach-disk fuck 
/home/sss/cd/mhdd32ver4.6.iso hda --type cdrom --mode readonly
attach-disk: domain(optdata): fuck
attach-disk: source(optdata): /home/sss/cd/mhdd32ver4.6.iso
attach-disk: target(optdata): hda
attach-disk: type(optdata): cdrom
attach-disk: mode(optdata): readonly
attach-disk: found option <domain>: fuck
attach-disk: <domain> trying as domain NAME
error: Failed to attach disk
error: internal error: Removable media not supported for cdrom device

evil-desktop sss # virsh -d 0 attach-disk fuck 
/home/sss/cd/mhdd32ver4.6.iso hdb --type cdrom --mode readonly
attach-disk: domain(optdata): fuck
attach-disk: source(optdata): /home/sss/cd/mhdd32ver4.6.iso
attach-disk: target(optdata): hdb
attach-disk: type(optdata): cdrom
attach-disk: mode(optdata): readonly
attach-disk: found option <domain>: fuck
attach-disk: <domain> trying as domain NAME
error: Failed to attach disk
error: internal error: No device with bus 'ide' and target 'hdb'

evil-desktop sss # virsh -d 0 attach-disk fuck 
/home/sss/cd/mhdd32ver4.6.iso hdc --type cdrom --mode readonly
attach-disk: domain(optdata): fuck
attach-disk: source(optdata): /home/sss/cd/mhdd32ver4.6.iso
attach-disk: target(optdata): hdc
attach-disk: type(optdata): cdrom
attach-disk: mode(optdata): readonly
attach-disk: found option <domain>: fuck
attach-disk: <domain> trying as domain NAME
Disk attached successfully

with no luck...