devices: block: add block_size option for disks

This allows overriding the default logical block size (512 bytes) with
other values, such as 4096 for 4K block size disks.

BUG=chromium:942700
TEST=crosvm run -r vm_rootfs,block_size=4096 vm_kernel
TEST=verify block size with lsblk --output-all

Change-Id: Ia6db05f369a76557a2afb8b48b5cc2b66cf84b01
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1954220
Reviewed-by: Zach Reizner <zachr@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Commit-Queue: Daniel Verkamp <dverkamp@chromium.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/linux.rs b/src/linux.rs
index 006af42..a9a3445 100644
--- a/src/linux.rs
+++ b/src/linux.rs
@@ -386,6 +386,7 @@ fn create_block_device(
         disk_file,
         disk.read_only,
         disk.sparse,
+        disk.block_size,
         Some(disk_device_socket),
     )
     .map_err(Error::BlockDeviceNew)?;