Re: [xfstests-bld PATCH] test-appliance: support f2fs-tools v1.9 and later

[Eric Biggers <ebiggers@google.com>]

On Fri, Apr 06, 2018 at 09:30:36AM -0400, Theodore Y. Ts'o wrote:
> On Thu, Apr 05, 2018 at 03:21:41PM -0700, Eric Biggers wrote:
> > Pass the -f option to mkfs.f2fs when it appears to support it.  This is
> > required by f2fs-tools v1.9 and later in order to format the filesystem
> > even when an existing filesystem is detected.  But earlier versions did
> > not accept this option.
> > 
> > Signed-off-by: Eric Biggers <ebiggers@google.com>
> 
> Applied for now, but ugh.  Grepping strings out of binaries is not
> something I really like to depend upon.  Can we convince the f2fs
> folks to provide a "/sbin/mkfs.f2fs -V" which prints a version string,
> or some such?
> 

Yes, it's ugly.  As something maybe a bit better, I've proposed

	mkfs.f2fs --help |& grep -q "[[:space:]]-f[[:space:]|]"
	
in v2 of the xfstests patch to common/config.  So if that gets accepted into
xfstests I'll change this to use the same method.

Thanks,

Eric