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Re: kern/54470: Adapt FFS to work with HP-UX UFS1 variant
The following reply was made to PR kern/54470; it has been noted by GNATS.
From: mlelstv%serpens.de@localhost (Michael van Elst)
Subject: Re: kern/54470: Adapt FFS to work with HP-UX UFS1 variant
Date: Sun, 18 Aug 2019 05:58:59 -0000 (UTC)
perseant%hhhh.org@localhost (Konrad Schroder) writes:
> Â Â Â #define BTODB(size) ((size) >> dev_bshift)
> Â Â Â #define DBTOB(size) ((size) << dev_bshift)
>and change the value of dev_bsize, if necessary, in the setup.Â The
>kernel would do the same, but storing the dev_bshift value in struct
>ump.Â Would this address your concern?
I wouldn't call it dev_bshift to avoid confusion with DEV_BSHIFT and
also would use functions to compute the di_blocks value.
But I'm also not sure if HP-UX really uses the physical sector size
as unit for di_blocks.
Can you verify that it's not the fragment size ? That would be
the most natural value and, by default, is 1024 for HP-UX. On
the other hand, I haven't seen any HP-UX system that would
use 1024 byte physical sectors.
Michael van Elst
"A potential Snark may lurk in every tree."
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