Date: Tue, 30 Mar 1999 15:03:32 -0800 From: David Greenman <dg@root.com> To: Terry Lambert <tlambert@primenet.com> Cc: unknown@riverstyx.net, dyson@iquest.net, freebsd-chat@FreeBSD.ORG Subject: Re: Linux vs. FreeBSD: The Storage Wars Message-ID: <199903302303.PAA13468@implode.root.com> In-Reply-To: Your message of "Tue, 30 Mar 1999 22:07:43 GMT." <199903302207.PAA05079@usr04.primenet.com>
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I really shouldn't get into this, but a couple of points: 1) According to people who should know, John H. did the implementation and integration of the stackable filesystems support in 4.4BSD himself, so if you have a complaint about they way it was done, then blame him and not anyone else. 2) If (1) "works" in BSD/OS (and after hearing what Mike K. has to say, I'm certainly not convinced of this), it's only because they spent a lot of time making it work. 3) There were/are a lot of architectural problems in the LFS code. That it takes 1MB of RAM per mounted filesystem is one of them. Its amusing buffer management mechanisms are another. Margo knows this as well as anyone. LFS was never production quality; it was written as a proof of concept that worked well enough to get some benchmark numbers from and that's about it. The benchmark numbers weren't that great, so there wasn't sufficient interest to put in that last 10% that takes 90% of the time. 4) The use of the spare time field in FFS for sub-second time keeping is consistent with what BSD/OS (and apparantly Solaris and others) have done. Kirk's of the opinion that we'll have to move to larger inodes anyway due to the limitations of [32bit] block pointers, so using the spare field for sub-second time keeping, rather than Y2038, isn't an issue in his opinion. 5) Kirk is ready to see your generalized "soft updates", so get busy. 6) Regarding IPv6: Time has proven that we made the right decision by waiting. It was sufficient motivation to get the various camps to merge their efforts. The merged IPv6 will be brought into FreeBSD as soon as it is ready. -DG David Greenman Co-founder/Principal Architect, The FreeBSD Project To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the message
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