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| author | Peter Lieven <pl@kamp.de> | 2013-07-18 09:48:50 +0200 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2013-07-19 12:29:21 +0800 |
| commit | 323004a39d4d8d33c744a5b108f80bfe6402fca3 (patch) | |
| tree | e232d3657f529de5ac35cd785fa6fa387ab90116 /scripts/qapi-types.py | |
| parent | 8bf9344ad6883e6d85b69bab36d9d76e4257e9ed (diff) | |
| download | focaccia-qemu-323004a39d4d8d33c744a5b108f80bfe6402fca3.tar.gz focaccia-qemu-323004a39d4d8d33c744a5b108f80bfe6402fca3.zip | |
block-migration: efficiently encode zero blocks
this patch adds a efficient encoding for zero blocks by adding a new flag indicating a block is completely zero. additionally bdrv_write_zeros() is used at the destination to efficiently write these zeroes. depending on the implementation this avoids that the destination target gets fully provisioned. Signed-off-by: Peter Lieven <pl@kamp.de> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'scripts/qapi-types.py')
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