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authorPaolo Bonzini <pbonzini@redhat.com>2013-09-04 19:00:36 +0200
committerStefan Hajnoczi <stefanha@redhat.com>2013-09-06 15:25:09 +0200
commitf5f7abcfd50bca38ae278a9c7a3ed60fba3d76dc (patch)
treed7aa127458c42711ccf252cd8ab56b451a240cc0 /block
parent63390a8d14c9006f42bdaab22291c9c97676322d (diff)
downloadhqemu-f5f7abcfd50bca38ae278a9c7a3ed60fba3d76dc.zip
hqemu-f5f7abcfd50bca38ae278a9c7a3ed60fba3d76dc.tar.gz
raw-posix: report unwritten extents as zero
These are created for example with XFS_IOC_ZERO_RANGE. Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'block')
-rw-r--r--block/raw-posix.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/block/raw-posix.c b/block/raw-posix.c
index d011cfd..1b41ea3 100644
--- a/block/raw-posix.c
+++ b/block/raw-posix.c
@@ -1128,6 +1128,9 @@ static int64_t coroutine_fn raw_co_get_block_status(BlockDriverState *bs,
} else {
data = f.fe.fe_logical;
hole = f.fe.fe_logical + f.fe.fe_length;
+ if (f.fe.fe_flags & FIEMAP_EXTENT_UNWRITTEN) {
+ ret |= BDRV_BLOCK_ZERO;
+ }
}
#elif defined SEEK_HOLE && defined SEEK_DATA
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