[Jfs-discussion] finding how fragment is a file

[<pg...@jf...>]

Some time ago I asked how to check how many extents a file has
got, and there isn't yet a specific JFS utility for that, and
one has to muck around with 'jfs_debugfs'.

However, I just discovered that the 'filefrag' command from
'e2fsprogs' work with JFS and any other file system that
supports the FIBMAP 'ioctl'.

It is a bit crude, but usable.