Subject: Re: LFS partition limitations
To: None <>
From: Tracy J. Di Marco White <>
List: current-users
Date: 10/03/2000 19:32:09
}2) Use newfs's '-c' option to explicitly set the number of cylinder groups
}   as large as you can.  For any given block size, there will be a maximum
}   number of blocks in a cylinder group; start with something silly like
}   "-c 65536" and work downwards.  A larger block size will get you more
}   cylinders/group.

lyra:~# newfs -c 53338  /dev/rraid0a
Block size and bytes per inode restrict cylinders per group to 405.

I did exactly that.

}Even without changing the blocksize from 8K, you can do a lot better than
}newfs's defaults, which are reasonable only for tiny, ancient disks, if

Any pointers to a guide for choosing reasonable options, tuning guide
or such?

Tracy J. Di Marco White
Project Vincent Systems Manager