diff options
| author | Lennart Poettering <lennart@poettering.net> | 2015-01-17 18:11:45 +0100 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2015-01-19 20:24:09 +0100 |
| commit | 1c7dd82563ff2e71a067aea20d2acb2d0553644b (patch) | |
| tree | f26693719aeea09d4ab0f94e503bf82de96fa241 /src/import/qcow2-util.c | |
| parent | 1e20b41187ff7d27477b5322690e447753c66ace (diff) | |
qcow2: when dissecting qcow2, use btrfs clone ioctls for reflinking blocks to target
Diffstat (limited to 'src/import/qcow2-util.c')
| -rw-r--r-- | src/import/qcow2-util.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/import/qcow2-util.c b/src/import/qcow2-util.c index c84c6aa0d7..9b0c23bb14 100644 --- a/src/import/qcow2-util.c +++ b/src/import/qcow2-util.c @@ -24,6 +24,7 @@ #include "util.h" #include "sparse-endian.h" #include "qcow2-util.h" +#include "btrfs-util.h" #define QCOW2_MAGIC 0x514649fb @@ -85,6 +86,11 @@ static int copy_cluster( void *buffer) { ssize_t l; + int r; + + r = btrfs_clone_range(sfd, soffset, dfd, doffset, cluster_size); + if (r >= 0) + return r; l = pread(sfd, buffer, cluster_size, soffset); if (l < 0) |