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-rw-r--r--block/vmdk.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/block/vmdk.c b/block/vmdk.c
index 51067c774f..0f2e453bf5 100644
--- a/block/vmdk.c
+++ b/block/vmdk.c
@@ -426,10 +426,15 @@ static int vmdk_add_extent(BlockDriverState *bs,
return -EFBIG;
}
if (l1_size > 512 * 1024 * 1024) {
- /* Although with big capacity and small l1_entry_sectors, we can get a
+ /*
+ * Although with big capacity and small l1_entry_sectors, we can get a
* big l1_size, we don't want unbounded value to allocate the table.
- * Limit it to 512M, which is 16PB for default cluster and L2 table
- * size */
+ * Limit it to 512M, which is:
+ * 16PB - for default "Hosted Sparse Extent" (VMDK4)
+ * cluster size: 64KB, L2 table size: 512 entries
+ * 1PB - for default "ESXi Host Sparse Extent" (VMDK3/vmfsSparse)
+ * cluster size: 512B, L2 table size: 4096 entries
+ */
error_setg(errp, "L1 size too big");
return -EFBIG;
}