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BLOCK_SIZE is (1 << 20), qcow2 cluster size is 65536 by default, this may cause the qcow2 file size to be bigger after migration. This patch checks each cluster, using blk_pwrite_zeroes for each zero cluster. [Initialize cluster_size to BLOCK_SIZE to prevent a gcc uninitialized variable compiler warning. In reality we always initialize cluster_size in a conditional but gcc doesn't know that. --Stefan] Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Lidong Chen <lidongchen@tencent.com> Message-id: 1492050868-16200-1-git-send-email-lidongchen@tencent.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> |
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| .. | ||
| block.c | ||
| colo-comm.c | ||
| colo-failover.c | ||
| colo.c | ||
| exec.c | ||
| fd.c | ||
| Makefile.objs | ||
| migration.c | ||
| postcopy-ram.c | ||
| qemu-file-channel.c | ||
| qemu-file.c | ||
| qjson.c | ||
| ram.c | ||
| rdma.c | ||
| savevm.c | ||
| socket.c | ||
| tls.c | ||
| trace-events | ||
| vmstate.c | ||
| xbzrle.c | ||