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vmdk: Use bdrv_(p)write_sync for metadata writes 

Use bdrv_(p)write_sync to ensure metadata integrity in case of a crash.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2010-06-18 16:22:00 +02:00
parent 8b3b720620
commit b8852e87d9
1 changed files with 5 additions and 5 deletions
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10
block/vmdk.c
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@ -150,7 +150,7 @@ static int vmdk_write_cid(BlockDriverState *bs, uint32_t cid)
pstrcat(desc, sizeof(desc), tmp_desc);
}
if (bdrv_pwrite(bs->file, 0x200, desc, DESC_SIZE) != DESC_SIZE)
if (bdrv_pwrite_sync(bs->file, 0x200, desc, DESC_SIZE) < 0)
return -1;
return 0;
}
@ -471,14 +471,14 @@ static int vmdk_L2update(BlockDriverState *bs, VmdkMetaData *m_data)
BDRVVmdkState *s = bs->opaque;
/* update L2 table */
if (bdrv_pwrite(bs->file, ((int64_t)m_data->l2_offset * 512) + (m_data->l2_index * sizeof(m_data->offset)),
&(m_data->offset), sizeof(m_data->offset)) != sizeof(m_data->offset))
if (bdrv_pwrite_sync(bs->file, ((int64_t)m_data->l2_offset * 512) + (m_data->l2_index * sizeof(m_data->offset)),
&(m_data->offset), sizeof(m_data->offset)) < 0)
return -1;
/* update backup L2 table */
if (s->l1_backup_table_offset != 0) {
m_data->l2_offset = s->l1_backup_table[m_data->l1_index];
if (bdrv_pwrite(bs->file, ((int64_t)m_data->l2_offset * 512) + (m_data->l2_index * sizeof(m_data->offset)),
&(m_data->offset), sizeof(m_data->offset)) != sizeof(m_data->offset))
if (bdrv_pwrite_sync(bs->file, ((int64_t)m_data->l2_offset * 512) + (m_data->l2_index * sizeof(m_data->offset)),
&(m_data->offset), sizeof(m_data->offset)) < 0)
return -1;
}