Date: Wed, 21 Jan 2004 10:49:10 -0800 From: Darcy Buskermolen <darcy@wavefire.com> To: Robert Watson <rwatson@freebsd.org> Cc: freebsd-fs@freebsd.org Subject: Re: 32k directory limit Message-ID: <200401211049.10168.darcy@wavefire.com> In-Reply-To: <Pine.NEB.3.96L.1040121132519.20699H-100000@fledge.watson.org> References: <Pine.NEB.3.96L.1040121132519.20699H-100000@fledge.watson.org>
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On January 21, 2004 10:34 am, Robert Watson wrote: > On Wed, 21 Jan 2004, Darcy Buskermolen wrote: > > Problem is some brain dead software (to which I don't have source) > > creating these dirs all under one dir and not nesting them in a way to > > ensure that the 32k number isn't broken. > > The largest number of files (not directories) I have in a single directory > appears to be about 1.1 million. Other than the link count, there's no > real reason there couldn't be more, although you might well bump into > other scalability limits (I have to remember not to let ls sort the > directory listing for that directory, for example). Changing the link > count would be a binary layout change, however. We have more reserve > fields in the UFS2 inode, and it might well not be hard to experiment > with. But we'd need to be very careful if deploying that change more > broadly. I wouldn't be against trying/testing such a solution/hack in my environment any hints/patches would be most usefull. > > Robert N M Watson FreeBSD Core Team, TrustedBSD Projects > robert@fledge.watson.org Senior Research Scientist, McAfee Research > > > On January 20, 2004 06:28 pm, Greg 'groggy' Lehey wrote: > > > On Friday, 16 January 2004 at 12:05:53 -0800, Darcy Buskermolen wrote: > > > > Is there a way i can bump up the limit of 32k directories in a > > > > directory on either 4.9 or 5.2 ? > > > > > > I don't think so. It's really the link count that's biting you, and > > > it's a signed 16 bit number. FWIW, System V limits to 1000. > > > > > > Why do you want that many directories? UNIX directories aren't > > > designed to be that big, whether the entries point to files or > > > directories. > > > > > > Greg > > > -- > > > See complete headers for address and phone numbers. > > > > -- > > Darcy Buskermolen > > Wavefire Technologies Corp. > > ph: 250.717.0200 > > fx: 250.763.1759 > > http://www.wavefire.com > > > > _______________________________________________ > > freebsd-fs@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-fs > > To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org" > > _______________________________________________ > freebsd-fs@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-fs > To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org" -- Darcy Buskermolen Wavefire Technologies Corp. ph: 250.717.0200 fx: 250.763.1759 http://www.wavefire.com
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