Date: Tue, 25 Nov 2008 11:02:43 +0100 From: Luigi Rizzo <rizzo@iet.unipi.it> To: Rink Springer <rink@freebsd.org> Cc: current@freebsd.org Subject: Re: small newfs_msdos addition Message-ID: <20081125100243.GA19436@onelab2.iet.unipi.it> In-Reply-To: <20081125094635.GA64854@rink.nu> References: <20081125094125.GA18669@onelab2.iet.unipi.it> <20081125094635.GA64854@rink.nu>
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On Tue, Nov 25, 2008 at 10:46:35AM +0100, Rink Springer wrote:
> Hi Luigi,
>
> On Tue, Nov 25, 2008 at 10:41:25AM +0100, Luigi Rizzo wrote:
> > If there are no objections I'd like to commit the small patch below
> > to newfs_msdos.c -- all it does is create a fake geometry if
> > it cannot get the media size, which is handy when you want to
> > create a filesystem image on a regular file.
>
> Hmm, what about adding this as a seperate option, or perhaps printing a
> message that it made a wild guess?
Right now it does this:
> newfs_msdos /tmp/aaa
newfs_msdos: warning: /tmp/aaa is not a character device
/tmp/aaa: 20424 sectors in 2553 FAT12 clusters (4096 bytes/cluster)
bps=512 spc=8 res=1 nft=2 rde=512 sec=20480 mid=0xf0 spf=8 spt=64 hds=32 hid=0
so the warning is there already.
I am a bit reluctant to add one more option -- the whole goal was to
make it easy to use, otherwise one could just exploit the existing flags.
> When I create a md(4), I may have accidently forgotten to specify the
> geometry and I would like to be reminded that it made something up,
well, the whole geometry thing (and disktab) is a relic of the past.
These days it is completley meaningless -- hard disks always have a fake
geometry (63sec/255heads), same for flash memories...
cheers
luigi
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