Description of problem:
the error reported by libguestfs api resize2fs-M is wrong,

without trace,

><fs> resize2fs-M /dev/vda1
libguestfs: error: resize2fs_M: you need to run e2fsck with the correct and/or forceall options first


with trace, can see it's cause by the size of the disk,

><fs> resize2fs-M /dev/vda1
libguestfs: send_to_daemon: 60 bytes: 00 00 00 38 | 20 00 f5 f5 | 00 00 00 04 | 00 00 01 19 | 00 00 00 00 | ...
guestfsd: main_loop: proc 304 (e2fsck) took 0.16 seconds
guestfsd: main_loop: new request, len 0x38
resize2fs -M /dev/vda1
resize2fs 1.41.12 (17-May-2010)
resize2fs: Not enough space to build proposed filesystem while trying to resize /dev/vda1
Please run 'e2fsck -fy /dev/vda1' to fix the filesystem
after the aborted resize operation.
guestfsd: error: you need to run e2fsck with the correct and/or forceall options first
guestfsd: main_loop: proc 281 (resize2fs_M) took 0.04 seconds
libguestfs: recv_from_daemon: 120 bytes: 20 00 f5 f5 | 00 00 00 04 | 00 00 01 19 | 00 00 00 01 | 00 12 34 1a | ...
libguestfs: error: resize2fs_M: you need to run e2fsck with the correct and/or forceall options first


i think libguestfs need to return different error message according to resize2fs's error message, but not all " you need to run e2fsck with the correct and/or forceall options first"

Version-Release number of selected component (if applicable):
libguestfs-1.16.8-1.el6.x86_64

How reproducible:
always

Steps to Reproduce:
1.guestfish -N -fs 
2.resize2fs-M /dev/vda1
3.
  
Actual results:


Expected results:
show the resize2fs error " Not enough space to build proposed filesystem while trying to resize /dev/vda1" instead " resize2fs_M: you need to run e2fsck with the correct and/or forceall options first"

Additional info: