Path: utzoo!utgpu!cunews!bnrgate!brchh104!brchs1!bnr.ca!rice.edu!sun-spots-request
From: jms@tardis.tymnet.com (Joe Smith)
Newsgroups: comp.sys.sun
Subject: Re: Inode density problem
Keywords: No Digest Subjects during Flush
Message-ID: <3982@brchh104.bnr.ca>
Date: 27 Jun 91 20:22:00 GMT
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Approved: sun-spots@rice.edu
X-Original-Date:    Wed, 12 Jun 91 14:58:20 PDT

In article <3434@brchh104.bnr.ca> you write:
>I'm having trouble achieving an acceptable inode density on a 1GB+
>external SCSI disk drive. The system is a 3/80 running SunOS 4.0.3.
>The OS has a compiled-in maximum number of inodes per cylinder group,
>called MAXIPG. This is given in <ufs/fs.h> as 2048.

One of the major differences between 4.0.3 and 4.1.1 is the solution
to this very problem.  If you can't upgrade to SunOS-4.1.1, there is
a way around it, by lying to the formatter.

Create an entry in /etc/format.dat such that 'ncyl' is 2 or 3 times the
real value, and the product of nhead * nsect is 1/2 or 1/3 the real value.
Then 'mkfs' will create more cylinder groups, with a reasonable number
of inodes per group.

>    bret@codonics.com
>    uunet!codonics!bret
>    Bret Orsburn


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