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authorEric Blake <eblake@redhat.com>2017-06-05 15:38:45 -0500
committerKevin Wolf <kwolf@redhat.com>2017-07-10 13:18:05 +0200
commit544daf6679cef4c0fac8b4a07deef305021a22c1 (patch)
tree523f39b206ebd37910959df41f6f2ebef1a6b06d /block
parentd5254033daf524fb2eee862eb8377b9ddc81000a (diff)
blkdebug: Support .bdrv_co_get_block_status
Without a passthrough status of BDRV_BLOCK_RAW, anything wrapped by blkdebug appears 100% allocated as data. Better is treating it the same as the underlying file being wrapped. Update iotest 177 for the new expected output. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block')
-rw-r--r--block/blkdebug.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/block/blkdebug.c b/block/blkdebug.c
index a1b24b9b0d..b25856c49c 100644
--- a/block/blkdebug.c
+++ b/block/blkdebug.c
@@ -641,6 +641,16 @@ static int coroutine_fn blkdebug_co_pdiscard(BlockDriverState *bs,
return bdrv_co_pdiscard(bs->file->bs, offset, bytes);
}
+static int64_t coroutine_fn blkdebug_co_get_block_status(
+ BlockDriverState *bs, int64_t sector_num, int nb_sectors, int *pnum,
+ BlockDriverState **file)
+{
+ *pnum = nb_sectors;
+ *file = bs->file->bs;
+ return BDRV_BLOCK_RAW | BDRV_BLOCK_OFFSET_VALID |
+ (sector_num << BDRV_SECTOR_BITS);
+}
+
static void blkdebug_close(BlockDriverState *bs)
{
BDRVBlkdebugState *s = bs->opaque;
@@ -915,6 +925,7 @@ static BlockDriver bdrv_blkdebug = {
.bdrv_co_flush_to_disk = blkdebug_co_flush,
.bdrv_co_pwrite_zeroes = blkdebug_co_pwrite_zeroes,
.bdrv_co_pdiscard = blkdebug_co_pdiscard,
+ .bdrv_co_get_block_status = blkdebug_co_get_block_status,
.bdrv_debug_event = blkdebug_debug_event,
.bdrv_debug_breakpoint = blkdebug_debug_breakpoint,