> uml:~# mount -oloop -r ext3.img /mnt/img/
> uml:~# losetup /dev/loop2 ovl.img
> uml:~# /host/store/git/e2fsprogs/misc/mke2fs -O whiteout,fallthru /dev/loop2
> mke2fs 1.41.12 (17-May-2010)
> Filesystem label=
> OS type: Linux
> Block size=1024 (log=0)
> Fragment size=1024 (log=0)
> Stride=0 blocks, Stripe width=0 blocks
> 1280 inodes, 10240 blocks
> 512 blocks (5.00%) reserved for the super user
> First data block=1
> Maximum filesystem blocks=10485760
> 2 block groups
> 8192 blocks per group, 8192 fragments per group
> 640 inodes per group
> Superblock backups stored on blocks:
> 8193
>
> Allocating group tables: done
> Writing inode tables: done
> Writing superblocks and filesystem accounting information: done
>
> This filesystem will be automatically checked every 24 mounts or
> 180 days, whichever comes first. Use tune2fs -c or -i to override.
> uml:~# mmount -b 8 -t ext2 /dev/loop2 /mnt/img/
> uml:~# "ls" /mnt/img
> lost+found union
> uml:~# "ls" /mnt/img/union
> 1 2 3
> uml:~# umount /mnt/img
> uml:~# mmount -b 8 -t ext2 /dev/loop2 /mnt/img/
> uml:~# ls -l /mnt/img/
> total 13
> drwx------ 2 root root 12288 Aug 13 13:42 lost+found
> drwxr-xr-x 2 root root 1024 Aug 13 13:42 union
> uml:~# ls -la /mnt/img/union/
> total 2
> drwxr-xr-x 2 root root 1024 Aug 13 13:42 .
> drwxr-xr-x 4 root root 1024 Aug 13 13:42 ..
> uml:~# grep /mnt/img /proc/self/mountinfo
> 21 12 7:0 / /mnt/img ro,relatime - ext3 /dev/loop0 ro,errors=continue,barrier=0,data=writeback
> 22 21 7:2 / /mnt/img rw,relatime,union - ext2 /dev/loop2 rw,errors=continue
>
> Thanks,
> Miklos
> --
> To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
> the body of a message to
majordomo@vger.kernel.org
> More majordomo info at
http://vger.kernel.org/majordomo-info.html
