Date: Tue, 19 Dec 1995 15:39:48 +0800 (WST) From: Julian Elischer <julian@jhome.DIALix.COM> To: m.sapsed@bangor.ac.uk (Martin Sapsed) Cc: freebsd-questions@FreeBSD.ORG, freebsd-bugs@FreeBSD.ORG, m.sapsed@bangor.ac.uk Subject: Re: Problem with FreeBSD 2.1.0-RELEASE Message-ID: <199512190739.PAA13531@jhome.DIALix.COM> In-Reply-To: <Pine.OSF.3.90.951218105438.10176A-100000@thunder> from "Martin Sapsed" at Dec 18, 95 05:08:19 pm
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Wowo an interesting system.. there is always someone trying to stretch the boundaries..:) compile the kernel with options DDB and also posibly in such a way to allow it to dump core so we can look ata coredump.. there is a FAQ entry about how to do this.. julian > > > Hi all, > > I'm have loaded FreeBSD 2.1.0-RELEASE onto a P75 which I want to use as a > cd-rom server. It has 16 mb RAM and 18 Panasonic quad speed SCSI cd-rom > drives connected to 3 Adaptec Ultra 2940 PCI SCSI cards. I have rebuilt > the kernel using the config file below and created devices (by adding the > extra numbers to the line in MAKEDEV), a sample of which appear below > also. I can access the first few cd drives (tried nos 1 and 2 > particularly) and can access the other drives as far as mounting them (ro > and cd9660) and cd'ing to them is concerned but prolonged access to them > (du on a large-ish CD) produces various errors like (the numbers in [ ] > are basically the same error printout but with 2 differences). > > Fatal trap 12: page fault while in kernel mode > fault virtual address = 0x5d [0x4c] > fault code = supervisor read, page not present > instruction pointer = 0x8:0xf01244dc > code segment = base 0x0, limit 0xfffff, type 0x1b > = DPL 0, pres 1, def32 1, gran 1 > processor eflags = interrupt enabled, resume, IOPL = 0 > current process = 186 (du) [197] > interrupt mask = bio > panic: page fault > > syncing disks... 7 7 7 7 7...7 7 giving up > > and on another occasion > > panic: bremfree: removing a buffer when not on a queue > > > I wanted the cd's tied to particular device numbers and think I've done > this. As I said limited access to the later cds is possible. > > What have I done wrong? Do I need to alter something somewhere? > > Help! > > Martin > > Please include me in any reply as I'm not on the lists yet! > > ---------------------------------------------------------------------- > Martin Sapsed Tel: +44 (0)1248 382409 > Microcomputer Support Officer Fax: +44 (0)1248 383826 > UCNW Computing Lab > Bangor, N. Wales, LL57 2DG "Who do you say I am?" > m.sapsed@bangor.ac.uk Jesus of Nazareth > ---------------------------------------------------------------------- > > A sample of entries in /dev look like > > brw-r----- 1 root wheel 6, 0 Dec 14 10:32 /dev/cd0a > brw-r----- 1 root wheel 6, 2 Dec 14 10:32 /dev/cd0c > brw-r----- 1 root wheel 6, 8 Dec 14 14:28 /dev/cd1a > brw-r----- 1 root wheel 6, 10 Dec 14 14:28 /dev/cd1c > brw-r----- 1 root wheel 6, 80 Dec 18 10:40 /dev/cd10a > brw-r----- 1 root wheel 6, 82 Dec 18 10:40 /dev/cd10c > brw-r----- 1 root wheel 6, 112 Dec 18 10:40 /dev/cd14a > brw-r----- 1 root wheel 6, 114 Dec 18 10:40 /dev/cd14c > crw------- 1 root wheel 15, 536870912 Dec 14 10:32 /dev/rcd0.ctl > crw-r----- 1 root wheel 15, 0 Dec 14 10:32 /dev/rcd0a > crw-r----- 1 root wheel 15, 2 Dec 14 10:32 /dev/rcd0c > crw------- 1 root wheel 15, 536870920 Dec 14 14:28 /dev/rcd1.ctl > crw-r----- 1 root wheel 15, 8 Dec 14 14:28 /dev/rcd1a > crw-r----- 1 root wheel 15, 10 Dec 14 14:28 /dev/rcd1c > crw------- 1 root wheel 15, 536870992 Dec 18 10:40 /dev/rcd10.ctl > crw-r----- 1 root wheel 15, 80 Dec 18 10:40 /dev/rcd10a > crw-r----- 1 root wheel 15, 82 Dec 18 10:40 /dev/rcd10c > crw------- 1 root wheel 15, 536871024 Dec 18 10:40 /dev/rcd14.ctl > crw-r----- 1 root wheel 15, 112 Dec 18 10:40 /dev/rcd14a > crw-r----- 1 root wheel 15, 114 Dec 18 10:40 /dev/rcd14c > > and the kernel was rebuilt with > > ##################### > machine "i386" > cpu "I586_CPU" > ident "CDROM3" > maxusers 10 > > options INET #InterNETworking > options FFS #Berkeley Fast Filesystem > options NFS #Network Filesystem > options MSDOSFS #MSDOS Filesystem > options "CD9660" #ISO 9660 Filesystem > options PROCFS #Process filesystem > options "COMPAT_43" #Compatible with BSD 4.3 > options "SCSI_DELAY=15" #Be pessimistic about Joe SCSI device > options BOUNCE_BUFFERS #include support for DMA bounce buffers > options UCONSOLE #Allow users to grab the console > > options SYSVSHM > options SYSVSEM > options SYSVMSG > > config kernel root on sd0 > > controller isa0 > controller pci0 > > controller fdc0 at isa? port "IO_FD1" bio irq 6 drq 2 vector fdintr > disk fd0 at fdc0 drive 0 > > controller ahc0 > controller ahc1 at isa? bio irq ? vector ahcintr > controller ahc2 at isa? bio irq ? vector ahcintr > > controller scbus0 at ahc0 > controller scbus1 at ahc1 bus 0 > controller scbus2 at ahc2 bus 0 > > device sd0 at scbus0 target 0 unit 0 > > device cd0 at scbus0 target 3 > device cd1 at scbus0 target 4 > device cd2 at scbus0 target 5 > device cd3 at scbus0 target 6 > > device cd7 at scbus1 target 0 > device cd8 at scbus1 target 1 > device cd9 at scbus1 target 2 > device cd10 at scbus1 target 3 > device cd11 at scbus1 target 4 > device cd12 at scbus1 target 5 > device cd13 at scbus1 target 6 > > device cd14 at scbus2 target 0 > device cd15 at scbus2 target 1 > device cd16 at scbus2 target 2 > device cd17 at scbus2 target 3 > device cd18 at scbus2 target 4 > device cd19 at scbus2 target 5 > device cd20 at scbus2 target 6 > > device sc0 at isa? port "IO_KBD" tty irq 1 vector scintr > > device npx0 at isa? port "IO_NPX" irq 13 vector npxintr > > device sio0 at isa? port "IO_COM1" tty irq 4 vector siointr > device sio1 at isa? port "IO_COM2" tty irq 3 vector siointr > device sio2 at isa? port "IO_COM3" tty irq 5 vector siointr > device sio3 at isa? port "IO_COM4" tty irq 9 vector siointr > > device lpt0 at isa? port? tty irq 7 vector lptintr > > device ed0 at isa? port 0x280 net irq 5 iomem 0xd8000 vector edintr > > pseudo-device loop > pseudo-device ether > pseudo-device log > pseudo-device sl 1 > pseudo-device tun 1 > pseudo-device pty 16 > pseudo-device gzip # Exec gzipped a.out's > ############################ > > > >
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