Date: Thu, 20 Sep 2001 19:47:26 +0300 From: Ruslan Ermilov <ru@FreeBSD.ORG> To: Ollivier Robert <roberto@eurocontrol.fr> Cc: freebsd-arch@FreeBSD.ORG Subject: Re: New option for newfs Message-ID: <20010920194726.A61491@sunbay.com> In-Reply-To: <20010920181423.A99633@caerdonn.eurocontrol.fr>; from roberto@eurocontrol.fr on Thu, Sep 20, 2001 at 06:14:23PM %2B0200 References: <20010920181423.A99633@caerdonn.eurocontrol.fr>
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On Thu, Sep 20, 2001 at 06:14:23PM +0200, Ollivier Robert wrote:
> I want to add a new option to newfs in order to maximise the number of
> cylinders per cg (to reduce fragmentation and head movement).
>
> Right now, one can use '-c' to specify another value but
>
> 1. the default is 22 (calculated for a 8k/1k FS) regardless of the FS
> (i.e. it will still be 22 even though you choose a 16k/2k FS).
>
> 2. newfs barfs when '-c' argument is too high.
>
> Proposal: a new option ('-M') that says: ignore -c if present, calculate
> the maxcpg allowed for the given argument to newfs and use that.
>
Umm, how about just making ``-c max'' DTRT? You can strcasecmp(optarg, "max")
and set Mflag = 1 if it matches. No need for -M and (ugly) MAXCPG then.
Cheers,
--
Ruslan Ermilov Oracle Developer/DBA,
ru@sunbay.com Sunbay Software AG,
ru@FreeBSD.org FreeBSD committer,
+380.652.512.251 Simferopol, Ukraine
http://www.FreeBSD.org The Power To Serve
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