Hello, I need some help in understanding the linux raid-0 and raid-1. If in raid-0 , i have two device (/dev/sda and /dev/sdb and the chunk size is 4k, which part of the code is responsible for deciding that the first 4k goes into /dev/sda and then second write of 4K goes into /dev/sdb.How does md driver knows the layout of the disk. Does it leave to the ide or scsi driver. Also while reading the data, it needs to read from /dev/sda first and then from /dev/sdb. which routine is responsible for tracking the blocks and lba. also Which routine is responsible for queuing the md driver data and command. where can i find the documentation for raid source code. All help appreciated. Thanks Jay Note: Please email the response to my email id. I am not a subscriber of linux-raid group. - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html