creating FFS2 file-system with makefs on linux

[Pierre-Philipp Braun <pbraun%nethence.com@localhost>]

Hello.  I would like to create netbsd XEN/PV domU guests from gnu/linux dom0s therefore create FFS2 file-systems from there.  First, I tried adding `newfs` to tools/Makefile but I realized it's not possible (many header files to add and probably lots of porting required).  So I tried with `makefs` instead, and it seems we're good!  The following command did work and the guest is up and running already.

/var/tmp/usr/tools/bin/nbmakefs -t ffs -o v=2,o=time -s 2g slime9.ffs2 tree/

However when I increase the size of the image, it fails at higher volumes 3GB, 4GB, 5GB e.g.

/var/tmp/usr/tools/bin/nbmakefs -t ffs -o v=2,o=time -s 5g slime9.ffs2 tree/

Calculated size of `slime9.ffs2': 5368709120 bytes, 21246 inodes
Extent size set to 8192
slime9.ffs2: 5120.0MB (10485760 sectors) block size 8192, fragment size 1024
        using 93 cylinder groups of 55.19MB, 7064 blks, 256 inodes.
super-block backups (for fsck -b #) at:
       32,   113056,   226080,   339104,   452128,   565152,   678176,
   791200,   904224,  1017248,  1130272,  1243296,  1356320,  1469344,
  1582368,  1695392,  1808416,  1921440,  2034464,  2147488,  2260512,
  2373536,  2486560,  2599584,  2712608,  2825632,  2938656,  3051680,
  3164704,  3277728,  3390752,  3503776,  3616800,  3729824,  3842848,
  3955872,  4068896,  4181920,nbmakefs: ffs_wtfs: seek error for sector 4294944: Invalid argument

Any thoughts?

Many thanks^^
-- 
Pierre-Philipp