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Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!news.cs.su.oz.au!metro!metro!munnari.OZ.AU!spool.mu.edu!howland.erols.net!newsfeed.internetmci.com!newsfeed1.telenordia.se!news1.telenordia.se!news From: torbjorn.carlsson@unilog.se (Torbjörn Carlsson) Newsgroups: comp.unix.bsd.freebsd.misc Subject: Weird CCD behaviour... Date: Fri, 14 Feb 1997 10:33:28 GMT Organization: Unilog Systems AB Lines: 59 Message-ID: <33043926.5218743@news1.telenordia.se> References: <33018D70.773C2448@doc.ic.ac.uk> <5durp6$f21$1@polaris.eurocontrol.fr> NNTP-Posting-Host: humus.unilog.se Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Newsreader: Forte Agent .99f/32.299 Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:35690 On 13 Feb 1997 10:52:22 GMT, roberto@eurocontrol.fr (Ollivier Robert) wrote: > [courtesy cc of this posting sent to cited author via email] > >In article <33018D70.773C2448@doc.ic.ac.uk>, >Paul Dias <pbd@doc.ic.ac.uk> wrote: >> Can anyone tell me what the largest filesystem size supported by FreeBSD >> is, please? > >A few TB I think. We got rid of the 2 GB limitation a while ago. >-- Hmm... Looks like I've run into some remains of that limitation. We are trying to build a News spool using the ccd driver that comes with 2.1.6 Hardware: Adaptec 3940UWD SCSI adapter, and Micropolis 3391 WS Diskdrives. (9.1 GB) When using the standard /dev/sd2 devices there is no problems with making 1 partition out of the whole disk and then running newfs on that partition. But when we're trying to use the ccd and map the single large partition the machine crashes with an error-message like this: Feb 7 15:28:19 news1 /kernel: ahc1: ahc_scsi_cmd: more than 256 DMA segs Feb 7 15:28:19 news1 /kernel: sd2: oops not queued Feb 7 15:28:19 news1 /kernel: biodone: buffer already done And from there the only response we get from the machine is when the reset button is pressed. The only way we've been able to use the disks in a ccd-configuration is to partition them down to 2GB partitions and then use ccd to concatenate the partitions. Partitions slightly larger than 2GB crashes the machine in the same way as the single large one. The adaptec driver itself seems to be working, but the combination of adaptec and ccd does not really work. Question: Has anyone else seen this behaviour ? What about other brands of SCSI-adapters ? /Torbjörn -- Torbjörn Carlsson Phone: +46 18 13 20 10 Mobile: +46 705 27 01 11 Unilog Systems AB Fax: +46 18 13 20 11 Email: tc@unilog.se Kungsängsvägen 29 WWW: http://www.unilog.se/tc.html S-753 23 Uppsala, Sweden