fork2yu/hd_write_verify

hd_write_verify & hd_write_verify_dump is a tool for testing disk stability and verifying data consistency, for example: physical disk: ide/sata/scsi/ssd/iscsi/fc/raid. virtual disk: loop/nbd/lvm/soft raid. virtual machine disk: ide/sata/scsi/virtio-blk/virtio-scsi.