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Role(master or peer) controls how the domain behaves on migration. For more details about migration with ivshmem, see https://git.qemu.org/?p=qemu.git;a=blob_plain;f=docs/system/ivshmem.rst;hb=HEAD It's a optional attribute in libvirt, and qemu will choose default role for ivshmem device if the user is not specified. With device property 'role', the value can be 'master' or 'peer'. - 'master' (means 'master=on' in qemu), the guest will copy the shared memory on migration to the destination host. - 'peer' (means 'master=off' in qemu), the migration is disabled. Signed-off-by: Martin Kletzander <mkletzan@redhat.com> Signed-off-by: Yang Hang <yanghang44@huawei.com> Signed-off-by: Wang Xin <wangxinxin.wang@huawei.com> Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
7 lines
204 B
XML
7 lines
204 B
XML
<shmem name='shmem0' role='peer'>
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<model type='ivshmem-plain'/>
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<size unit='M'>4</size>
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<alias name='shmem0'/>
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<address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
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</shmem>
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