Messages in this thread | | | Date | Fri, 7 Nov 2014 10:23:13 +0100 | From | Karel Zak <> | Subject | Re: [PATCH 5/5] brd: Add getgeo to block ops for fdisk |
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On Wed, Nov 05, 2014 at 04:10:50PM +0200, Boaz Harrosh wrote: > From: Boaz Harrosh <boaz@plexistor.com> > > Now when fdisk is run on brd it will ask some cryptic > questions about CHS. This is because the getgeo block operation > is not implemented.
Again, what fdisk (util-linux) version?
> I have done a quick audit of the fdisk code. The CHS calculation > is very convoluted but at the end it comes out with a number. > Which is taken into consideration in first-sector to allow. With > all 1(s) this numbers is very small and other numbers come into > account. Also note that if the device is big like 1G (not sure what > is the threshold) fdisk will offer 1M (2048) as possible first- > sector, and it does not matter what numbers we give here.
oh.. sounds like archeology, CHS calculation does not mater in the current code, it follows I/O limits (including crazy alignment offset).
Karel
-- Karel Zak <kzak@redhat.com> http://karelzak.blogspot.com
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