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由 Eric Blake 提交于
Ultimately, we want to avoid read()ing a file while qemu is running. We still have to open() block devices to determine their physical size, but that is safer. This patch rearranges code to group together all code that reads the image, to make it easier for later patches to skip the metadata collection when possible. * src/qemu/qemu_driver.c (qemuDomainGetBlockInfo): Check for empty disk up front. Place metadata reading next to use. Signed-off-by: NEric Blake <eblake@redhat.com>
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