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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 /os-posix.c | |
| parent | 8bf9344ad6883e6d85b69bab36d9d76e4257e9ed (diff) | |
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 'os-posix.c')
0 files changed, 0 insertions, 0 deletions