diff options
Diffstat (limited to 'src/copy.c')
| -rw-r--r-- | src/copy.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/copy.c b/src/copy.c index 9b53127c4..f6f9ea6f2 100644 --- a/src/copy.c +++ b/src/copy.c @@ -398,7 +398,10 @@ extent_copy (int src_fd, int dest_fd, char *buf, size_t buf_size, /* Treat an unwritten but allocated extent much like a hole. I.E. don't read, but don't convert to a hole in the destination, unless SPARSE_ALWAYS. */ - if (scan.ext_info[i].ext_flags & FIEMAP_EXTENT_UNWRITTEN) + /* For now, do not treat FIEMAP_EXTENT_UNWRITTEN specially, + because that (in combination with no sync) would lead to data + loss at least on XFS and ext4 when using 2.6.39-rc3 kernels. */ + if (0 && (scan.ext_info[i].ext_flags & FIEMAP_EXTENT_UNWRITTEN)) { empty_extent = true; last_ext_len = 0; |