Date: Tue, 23 Nov 1999 00:01:53 -0600 (CST) From: Joe Greco <jgreco@ns.sol.net> To: abial@webgiro.com (Andrzej Bialecki) Cc: dillon@apollo.backplane.com, freebsd-hackers@FreeBSD.ORG Subject: Re: Non-standard FFS parameters Message-ID: <199911230601.AAA04318@aurora.sol.net> In-Reply-To: <Pine.BSF.4.05.9910090007450.77403-100000_freja.webgiro.com@ns.sol.net> from Andrzej Bialecki at "Oct 8, 1999 10:10: 0 pm"
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> On Fri, 8 Oct 1999, Matthew Dillon wrote:
>
> > :>
> > :> Adjusting the bytes-per-inode (-i) specification in newfs should not
> > :> pose a problem.
> > :
> > :IOW now you say it's ok to use very high values of -i... ;-)
> > :
> > :Andrzej Bialecki
> >
> > No, I didn't say that. My recommended maximum is still 262144. Fsck
> > should be reasonably fast with that number and the filesystem should
> > still be able to maintain reasonable efficiency.
>
> Ok, I can live with that, I guess. Thanks a lot for your help!
What's the recommended way to reduce the number of cylinder groups a bit?
-c's maximum limit is affected by combinations of -b and -i, possibly some
others. PHK was talking about new, more sensible values for filesystem
parameters, but I don't know what happened. I just think it's a bit silly
to go generating hundreds of cg's for a 34GB unit... and this _with_ the
max -c setting of 26 (for this fs).
/dev/vinum/rn8: 63700992 sectors in 15552 cylinders of 1 tracks, 4096 sectors
31104.0MB in 599 cyl groups (26 c/g, 52.00MB/g, 256 i/g)
super-block backups (for fsck -b #) at:
32, 106528, 213024, 319520, 426016, 532512, 639008, 745504, 852000, 958496,
... Joe
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Joe Greco - Systems Administrator jgreco@ns.sol.net
Solaria Public Access UNIX - Milwaukee, WI 414/342-4847
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