>>>>> "Boaz" == Boaz Harrosh <boaz@xxxxxxxxxxxxx> writes: Boaz, Boaz> Note that blk_queue_physical_block_size() also trashes io_min, but Boaz> we can leave this one to be 512. io_min as opposed to Boaz> physical_block_size will actually change Kernel behavior >> Care to elaborate? I wanted you to elaborate on how io_min changes kernel behavior. >> Also, fdisk and parted should be aligning on 1MB by default >> regardless of block size. So I'm also not sure why you need to trick >> fdisk to align by setting the pbs. Boaz> fdisk will not align partition-start on 1M, only the very Boaz> first-sector, libgparted and cfdisk are as you say, but with fdisk Boaz> if you put any odd numbered partition-size, the next start-sector Boaz> will just be the sum, but with this patch it will offer a small Boaz> hole and will align the partition-start on 4K. (And even with Boaz> this patch user can enter bad values) It really sounds like either your fdisk is way too old or you are running it in DOS compat mode. I don't have a fundamental issue reporting pbs of 4K. But if you are only doing it to force a certain partition alignment then it sounds like a kernel fix for a userland problem. I've CC:ed Karel who can comment on fdisk partition alignment issues. -- Martin K. Petersen Oracle Linux Engineering -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
