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qemu: domain: Forbid copy_on_read option also for floppies

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Using copy_on_read for removable disks is a hassle. It also does not
work for CDROMs at all as the image is supposed to be read-only and we
might ignore it for floppies when they are started as empty. Forbid it
for floppies completely rather than trying to support what probably
nobody is using.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Peter Krempa 2019-03-28 17:06:20 +01:00
parent b3736febca
commit e8e51b634f
1 changed files with 15 additions and 5 deletions
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20
src/qemu/qemu_domain.c
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@ -5041,11 +5041,21 @@ qemuDomainDeviceDefValidateDisk(const virDomainDiskDef *disk,
return -1;
}
if (disk->src->readonly && disk->copy_on_read == VIR_TRISTATE_SWITCH_ON) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("copy_on_read is not compatible with read-only disk '%s'"),
disk->dst);
return -1;
if (disk->copy_on_read == VIR_TRISTATE_SWITCH_ON) {
if (disk->src->readonly) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("copy_on_read is not compatible with read-only disk '%s'"),
disk->dst);
return -1;
}
if (disk->device == VIR_DOMAIN_DISK_DEVICE_CDROM ||
disk->device == VIR_DOMAIN_DISK_DEVICE_FLOPPY) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("copy_on_read is not supported with removable disk '%s'"),
disk->dst);
return -1;
}
}
if (disk->geometry.cylinders > 0 &&