On Thu, 15 Jul 2010 12:12:13 -0400, Chris Mason <chris.ma...@oracle.com> wrote: >>>> It seems that the btrfs doesn't support the sectorsize which is >>>> greater than the page size just like ext2/3/4, though we can use >>>> mkfs.btrfs to make a filesystem with a big sectorsize. Am I right? >>>> >>>> If yes, we must do more check in the mkfs.btrfs. >>>> >>> >>> yes, btrfs doesn't support the sectorsize> PAGE_size. >>> >> >> So we must do more check in the mkfs.btrfs to avoid misuse, and I'll >> add some check of the sectorsize into the mkfs.btrfs. > > Yes, but this is fixed up with the raid code, we'll allow different page > sizes.
Is the raid code that you said the initialization code for the block devices? just like this: fs/btrfs/volumes.c:1430 int btrfs_init_new_device(struct btrfs_root *root, char *device_path) { [snip] set_blocksize(device->bdev, 4096); [snip] } If yes, it uses a hard-code value to initialize the blocksize of the block device, not the blocksize of the btrfs, so the btrfs doesn't check the blocksize of the btrfs. Thanks Miao Xie -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html