On Wed, Mar 04, 2020 at 10:14:20AM +0800, Anand Jain wrote: > > the conversion. > > > > I've tried mkfs.ext4 with 64k block size and it warns and in the > > interactive session wants to confirm that by the user: > > > > $ mkfs.ext4 -b 64k img > > Warning: blocksize 65536 not usable on most systems. > > mke2fs 1.45.5 (07-Jan-2020) > > img contains a ext4 file system > > created on Tue Mar 3 18:41:46 2020 > > Proceed anyway? (y,N) y > > mkfs.ext4: 65536-byte blocks too big for system (max 4096) > > Proceed anyway? (y,N) y > > Warning: 65536-byte blocks too big for system (max 4096), forced to continue > > Creating filesystem with 32768 64k blocks and 32768 inodes > > > > Allocating group tables: done > > Writing inode tables: done > > Creating journal (4096 blocks): done > > Writing superblocks and filesystem accounting information: done > > > > Just warn is reasonable. But I don't think you meant to introduce > interactive part similar to mkfs.ext4 in btrfs-convert? No I haven't meant that. So let's go with the warning.
