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Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!nntp.coast.net!fu-berlin.de!zrz.TU-Berlin.DE!cs.tu-berlin.de!informatik.uni-bremen.de!newscaster-1.mcast.net!news.mathworks.com!hunter.premier.net!news.uoregon.edu!vixen.cso.uiuc.edu!usenet From: Vlad <roubtsov@uiuc.edu> Newsgroups: comp.unix.bsd.misc Subject: Re: Q: fast file system Date: Fri, 14 Jun 1996 22:28:52 -0500 Organization: Baphomet's Throne Lines: 19 Message-ID: <31C22DE5.41C67EA6@uiuc.edu> References: <31BDB7F7.41C67EA6@uiuc.edu> <31BE51CC.41C67EA6@uiuc.edu> <31C0B472.37FEDA0E@lambert.org> <31C10FB0.41C67EA6@uiuc.edu> <4prv02$j36@necco.harvard.edu> NNTP-Posting-Host: mossberg-73.slip.uiuc.edu Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Mailer: Mozilla 3.0b4 (X11; I; FreeBSD 2.1.0-RELEASE i386) Margo Seltzer wrote: > > Consider an 11 KB file. It would have two block pointers, the first > would point to a whole 8KB block; the second would point to 3, 1KB > fragments, contiguously allocated. > Let's say this was our only file so far and it has 2 "block" pointers, they are equal to (ignore inodes reserved for any purposes) 0 and 1 (8k-block #0 taken completely and first 3 1k-fragments of block #1 are taken too). Possible so far ? Or would they be equal to 0 and 4 (whole block starting at fragment #0 is taken + 3 fragments starting at fragment #4) ? It looks like 2nd scenario is the only one possible. Please confirm. Vlad. -- До