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block/vdi.c: Fix several bugs 

* The code for option '-static' was wrong, so image creation
  always created static images.

* Static images created with qemu-img did not set header entry
  blocks_allocated.

* The size of the block map must be rounded to the next multiple
  of SECTOR_SIZE, otherwise the block map is only read partially
  for block map sizes which are not a multiple of SECTOR_SIZE.

Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Stefan Weil 2009-08-14 21:50:02 +02:00 committed by Anthony Liguori
parent d1cd4bf419
commit 6eea90eba4
1 changed files with 9 additions and 4 deletions
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13
block/vdi.c
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@ -437,9 +437,9 @@ static int vdi_open(BlockDriverState *bs, const char *filename, int flags)
s->header = header;
bmap_size = header.blocks_in_image * sizeof(uint32_t);
s->bmap = qemu_malloc(bmap_size);
if (bdrv_read(s->hd, s->bmap_sector,
(uint8_t *)s->bmap, bmap_size / SECTOR_SIZE) < 0) {
bmap_size = (bmap_size + SECTOR_SIZE - 1) / SECTOR_SIZE;
s->bmap = qemu_malloc(bmap_size * SECTOR_SIZE);
if (bdrv_read(s->hd, s->bmap_sector, (uint8_t *)s->bmap, bmap_size) < 0) {
goto fail_free_bmap;
}
@ -817,7 +817,9 @@ static int vdi_create(const char *filename, QEMUOptionParameter *options)
#endif
#if defined(CONFIG_VDI_STATIC_IMAGE)
} else if (!strcmp(options->name, BLOCK_OPT_STATIC)) {
image_type = VDI_TYPE_STATIC;
if (options->value.n) {
image_type = VDI_TYPE_STATIC;
}
#endif
}
options++;
@ -845,6 +847,9 @@ static int vdi_create(const char *filename, QEMUOptionParameter *options)
header.disk_size = bytes;
header.block_size = block_size;
header.blocks_in_image = blocks;
if (image_type == VDI_TYPE_STATIC) {
header.blocks_allocated = blocks;
}
uuid_generate(header.uuid_image);
uuid_generate(header.uuid_last_snap);
/* There is no need to set header.uuid_link or header.uuid_parent here. */