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sheepdog: implement .bdrv_get_allocated_file_size 

With this patch, qemu-img info sheepdog:image will show disk size for sheepdog
images.

Cc: Kevin Wolf <kwolf@redhat.com>
Cc: Stefan Hajnoczi <stefanha@redhat.com>
Cc: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp>
Signed-off-by: Liu Yuan <namei.unix@gmail.com>
Reviewed-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
master
Liu Yuan 2013-08-07 16:59:53 +08:00 committed by Kevin Wolf
parent f8d1daea6f
commit 8582972227
1 changed files with 19 additions and 0 deletions
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19
block/sheepdog.c
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@ -2407,6 +2407,22 @@ sd_co_get_block_status(BlockDriverState *bs, int64_t sector_num, int nb_sectors,
return ret;
}
static int64_t sd_get_allocated_file_size(BlockDriverState *bs)
{
BDRVSheepdogState *s = bs->opaque;
SheepdogInode *inode = &s->inode;
unsigned long i, last = DIV_ROUND_UP(inode->vdi_size, SD_DATA_OBJ_SIZE);
uint64_t size = 0;
for (i = 0; i < last; i++) {
if (inode->data_vdi_id[i] == 0) {
continue;
}
size += SD_DATA_OBJ_SIZE;
}
return size;
}
static QEMUOptionParameter sd_create_options[] = {
{
.name = BLOCK_OPT_SIZE,
@ -2436,6 +2452,7 @@ static BlockDriver bdrv_sheepdog = {
.bdrv_create = sd_create,
.bdrv_has_zero_init = bdrv_has_zero_init_1,
.bdrv_getlength = sd_getlength,
.bdrv_get_allocated_file_size = sd_get_allocated_file_size,
.bdrv_truncate = sd_truncate,
.bdrv_co_readv = sd_co_readv,
@ -2465,6 +2482,7 @@ static BlockDriver bdrv_sheepdog_tcp = {
.bdrv_create = sd_create,
.bdrv_has_zero_init = bdrv_has_zero_init_1,
.bdrv_getlength = sd_getlength,
.bdrv_get_allocated_file_size = sd_get_allocated_file_size,
.bdrv_truncate = sd_truncate,
.bdrv_co_readv = sd_co_readv,
@ -2494,6 +2512,7 @@ static BlockDriver bdrv_sheepdog_unix = {
.bdrv_create = sd_create,
.bdrv_has_zero_init = bdrv_has_zero_init_1,
.bdrv_getlength = sd_getlength,
.bdrv_get_allocated_file_size = sd_get_allocated_file_size,
.bdrv_truncate = sd_truncate,
.bdrv_co_readv = sd_co_readv,