Date: Tue, 11 Dec 2001 00:54:12 -0800 From: Terry Lambert <tlambert2@mindspring.com> To: Greg Lehey <grog@FreeBSD.org> Cc: Hiten Pandya <hitmaster2k@yahoo.com>, current@FreeBSD.org, hackers@FreeBSD.org Subject: Re: [SUGGESTION] - JFS for FreeBSD Message-ID: <3C15C9B4.C74F914@mindspring.com> References: <20011210220153.50612.qmail@web21102.mail.yahoo.com> <3C15AB82.FDF598A8@mindspring.com> <20011211182856.A67986@monorchid.lemis.com>
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Greg Lehey wrote: > Since then, it has become possible for the loader to load modules > before booting the kernel. This means that, theoretically, it would > be possible to have a JFS root file system. Given the strong > opposition to the GPL in some factions of the FreeBSD project, I don't > see this happening any time soon, especially since we still don't know > if it will buy us anything. ? OK, I load the kernel from the JFS. I mount the root FS, which is a JFS. I read the module "jfs.ko" from the JFS so that I can mount the root FS, which is a JFS, so I can read the module "jfs.ko" from the JFS so that I can mount the root FS, which is a JFS, so I can read the module "jfs.ko" from the JFS so that I can mount the root FS, which is a JFS, so I can... Do you see the problem yet? > >> It is used on IBM MainFrames and Enterprise servers > >> for high performance and maximum throughput... > > > > No, it's not. The Linux JFS is derived from the OS/2 JFS code, not > > the good AIX JFS code. > > That's correct, but note that AIX is moving to this code base too, so > it's not as if it's second-rate. From what I've seen of the > structures, JFS2 is *much* better than JFS1. I haven't compared > performance. None of the Web Connections RS/6000 machines ran this OS/2 derived code. I was under the impression that it was there for Linux compatability. My impression is, layout or not, the original JFS is much better code, overall. -- Terry To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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