diff options
| author | Eric Blake <eblake@redhat.com> | 2017-06-05 15:38:45 -0500 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2017-07-10 13:18:05 +0200 |
| commit | 544daf6679cef4c0fac8b4a07deef305021a22c1 (patch) | |
| tree | 523f39b206ebd37910959df41f6f2ebef1a6b06d /block/blkdebug.c | |
| parent | d5254033daf524fb2eee862eb8377b9ddc81000a (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/blkdebug.c')
| -rw-r--r-- | block/blkdebug.c | 11 |
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, |