When a snapshot is taken from out side of qemu (e.g. qemu-img snapshot), write requests to the current vdi return SD_RES_READONLY. In this case, the sheepdog block driver needs to update the current inode to the latest one and resend the write requests. Signed-off-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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Read the documentation in qemu-doc.html or on http://wiki.qemu.org - QEMU team
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