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Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!nntp.coast.net!howland.erols.net!news.mathworks.com!fu-berlin.de!irz401!orion.sax.de!uriah.heep!news From: j@uriah.heep.sax.de (J Wunsch) Newsgroups: comp.unix.bsd.freebsd.misc Subject: Re: Timeouts on CD-Rom changer Date: 6 Oct 1996 18:11:56 GMT Organization: Private BSD site, Dresden Lines: 32 Message-ID: <538spc$90e@uriah.heep.sax.de> References: <53521a$m9@ionews.ionet.net> Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) NNTP-Posting-Host: localhost.heep.sax.de Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Newsreader: knews 0.9.6 X-Phone: +49-351-2012 669 X-PGP-Fingerprint: DC 47 E6 E4 FF A6 E9 8F 93 21 E0 7D F9 12 D6 4E rsamples@texhoma.net (Ryan Samples) wrote: > I run a Pioneer DRM-602X SCSI Cd-Rom changer. > > Here is the problem, I run a mount_cd9660 /dev/cd0a /cdrom and the first drive > mounts fine, however when I do a mount_cd9660 /dev/cd1a /cdrom2 for disk 2 the > SCSI card times out while the disk is switching. Many timeouts inside the `cd' driver are too low for changer devices. You can try bumping them, just to give it a try. (Look at the calls to the function `scsi_scsi_cmd()'.) > It appears that mabey the SCSI card is taking control of the cpu while the disk Nope. This is unrelated to the CPU. > is changing. I have the SCSI_DELAY set to 25 however the timeout I am This won't change anything, it only increases the initial timeout during the device probe. > experiencing is at 10 seconds. Where and how can I change this timeout say 15 > or 20 seconds? See above. The source file in question is /sys/scsi/cd.c. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)