From owner-freebsd-hackers Sat Jul 18 13:44:56 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id NAA25989 for freebsd-hackers-outgoing; Sat, 18 Jul 1998 13:44:56 -0700 (PDT) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from ifi.uio.no (0@ifi.uio.no [129.240.64.2]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id NAA25974 for ; Sat, 18 Jul 1998 13:44:52 -0700 (PDT) (envelope-from dag-erli@ifi.uio.no) Received: from hrotti.ifi.uio.no (2602@hrotti.ifi.uio.no [129.240.64.15]) by ifi.uio.no (8.8.8/8.8.7/ifi0.2) with ESMTP id WAA22651 for ; Sat, 18 Jul 1998 22:44:30 +0200 (MET DST) Received: (from dag-erli@localhost) by hrotti.ifi.uio.no ; Sat, 18 Jul 1998 22:44:29 +0200 (MET DST) Mime-Version: 1.0 To: hackers@FreeBSD.ORG Subject: Dump device with DEVFS? Organization: University of Oslo, Department of Informatics X-url: http://www.stud.ifi.uio.no/~dag-erli/ X-other-addresses: 'finger dag-erli@ifi.uio.no' for a list X-disclaimer-1: The views expressed in this article are mine alone, and do X-disclaimer-2: not necessarily coincide with those of any organisation or X-disclaimer-3: company with which am or have been affiliated. X-Stop-Spam: http://www.cauce.org/ From: dag-erli@ifi.uio.no (Dag-Erling Coidan =?iso-8859-1?Q?Sm=F8rgrav?= ) Date: 18 Jul 1998 22:44:28 +0200 Message-ID: Lines: 257 X-Mailer: Gnus v5.5/Emacs 19.34 Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG It seems to be impossible to enable a dump device with DEVFS. The following code in setdumpdev() in sys/i386/i386/autoconf.c is the culprit: if (dkpart(dev) != SWAP_PART) return (ENODEV); dkpart(dev) is #defined to (minor(dev) & 7) in disklabel.h, and SWAP_PART is #defined to 1 in the same file. Now MAKEDEV will assign minor numbers with the lower nybble 0x1 to swap partitions ([fosw]d?b or something like that) so it will work fine, but Helen's swap partition (/dev/wd0s1b) has minor number 11 (lower nybble 0x3), and Niobe's swap partition (/dev/sd0b) has minor number 20 (lower nybble 0x4), neither of which is acceptable to setdumpdev(). The only partition I have which is eligible as a dump device (due to its minor number being 25) is /dev/sd0h, aka. /usr/src. Am I missing something here? Is this a bug or a feature? How do I set a dump device on a DEVFS system? And anyway, shouldn't setdumpdev() just trust the user to know what he's doing even if the selected partition doesn't seem to be a swap partition? BTW, I just had a panic trying to umount an msdosfs floppy - probably thanks to soft updates, all my file systems except /var came up clean although I was cvsupping at the time of the panic. For completeness' sake, here is my dmesg, kernel config and a listing of /dev/sd*: Copyright (c) 1992-1998 FreeBSD Inc. Copyright (c) 1982, 1986, 1989, 1991, 1993 The Regents of the University of California. All rights reserved. FreeBSD 3.0-CURRENT #9: Fri Jul 17 18:26:15 CEST 1998 finrod@niobe.ewox.org:/usr/src/sys/compile/niobe Timecounter "i8254" frequency 1193182 Hz cost 2278 ns Timecounter "TSC" frequency 166193751 Hz cost 137 ns CPU: Pentium/P54C (166.19-MHz 586-class CPU) Origin = "GenuineIntel" Id = 0x52c Stepping=12 Features=0x1bf real memory = 134217728 (131072K bytes) FreeBSD Kernel Configuration Utility - Version 1.1 Type "help" for help or "visual" to go to the visual configuration interface (requires MGA/VGA display or serial terminal capable of displaying ANSI graphics). config> quit avail memory = 127885312 (124888K bytes) DEVFS: ready for devices Probing for devices on PCI bus 0: chip0: rev 0x03 on pci0.0.0 chip1: rev 0x01 on pci0.7.0 de0: rev 0x22 int a irq 15 on pci0.9.0 de0: ACCTON EN1207 21140A [10-100Mb/s] pass 2.2 de0: address 00:00:e8:4a:83:63 de0: enabling 100baseTX port vga0: rev 0x70 int a irq 9 on pci0.10.0 ahc0: rev 0x00 int a irq 12 on pci0.11.0 ahc0: aic7880 Wide Channel, SCSI Id=7, 16 SCBs scbus0 at ahc0 bus 0 sd0 at scbus0 target 2 lun 0 sd0: type 0 fixed SCSI 2 sd0: Direct-Access 4341MB (8890760 512 byte sectors) sd0: with 5899 cyls, 10 heads, and an average 150 sectors/track ahc0:A:4: refuses WIDE negotiation. Using 8bit transfers sd1 at scbus0 target 4 lun 0 sd1: type 0 fixed SCSI 2 sd1: Direct-Access 6180MB (12657717 512 byte sectors) sd1: with 7068 cyls, 8 heads, and an average 223 sectors/track ahc1: rev 0x00 int a irq 11 on pci0.12.0 ahc1: aic7870 Single Channel, SCSI Id=7, 16 SCBs scbus1 at ahc1 bus 0 st0 at scbus1 target 3 lun 0 st0: type 1 removable SCSI 2 st0: Sequential-Access density code 0x0, drive empty sd2 at scbus1 target 4 lun 0 sd2: type 0 fixed SCSI 2 sd2: Direct-Access 1030MB (2110812 512 byte sectors) sd2: with 3658 cyls, 6 heads, and an average 96 sectors/track cd0 at scbus1 target 5 lun 0 cd0: type 5 removable SCSI 2 cd0: CD-ROM cd present [258777 x 2048 byte records] od0 at scbus1 target 6 lun 0 od0: type 7 removable SCSI 2 od0: Optical 217MB (446325 512 byte sectors) od0: with approximate 217 cyls, 64 heads, and 32 sectors/track Probing for PnP devices: Probing for devices on the ISA bus: sc0 at 0x60-0x6f irq 1 on motherboard sc0: VGA color <12 virtual consoles, flags=0x0> psm0 not found at 0x60 sio0 at 0x3f8-0x3ff irq 4 flags 0x10 on isa sio0: type 16550A sio1 at 0x2f8-0x2ff irq 3 on isa sio1: type 16550A lpt0 at 0x378-0x37f irq 7 on isa lpt0: Interrupt-driven port lp0: TCP/IP capable interface pcm0 not found fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa fdc0: FIFO enabled, 8 bytes threshold fd0: 1.44MB 3.5in 1 3C5x9 board(s) on ISA found at 0x300 ep0 at 0x300-0x30f irq 10 on isa ep0: aui/bnc[*BNC*] address 00:60:8c:61:df:38 npx0 on motherboard npx0: INT 16 interface Intel Pentium F00F detected, installing workaround DEVFS: ready to run IP packet filtering initialized, divert disabled, rule-based forwarding disabled, logging limited to 256 packets/entry sd0: probing for MBR.. rejected.. Slice includes MBR sd0: probing for disklabel.. part a, start=0, size=131072 part b, start=131072, size=1048576 part d, start=3932160, size=4958600 part e, start=1179648, size=131072 part f, start=1310720, size=524288 part g, start=1835008, size=1048576 part h, start=2883584, size=1048576 sd1: probing for MBR.. rejected.. Slice includes MBR sd1: probing for disklabel.. part e, start=0, size=524288 part f, start=524288, size=1572864 part g, start=2097152, size=10560565 sd2: probing for MBR.. part 1, start=63, size=2104452 sd2s1: attaching disklabel.. part e, start=0, size=524288 part f, start=524288, size=1580164 fd0: probing for MBR.. WOULD SELECT /sd0a And it exists WARNING: / was not properly dismounted. fd0: Operation timeout fd0: hard error, block 0 (No status) ffs_mountfs: superblock updated ffs_mountfs: superblock updated ffs_mountfs: superblock updated ffs_mountfs: superblock updated ffs_mountfs: superblock updated ffs_mountfs: superblock updated ffs_mountfs: superblock updated ffs_mountfs: superblock updated # # Kernel configuration for niobe.ewox.org # machine "i386" cpu "I586_CPU" ident niobe maxusers 64 # # Networking options INET options IPFIREWALL options IPFIREWALL_VERBOSE options "IPFIREWALL_VERBOSE_LIMIT=256" options "NMBCLUSTERS=4096" # # File system options DEVFS options FFS options FFS_ROOT # Boot from FFS options NFS options PROCFS options SLICE # Use devfs for devices options SOFTUPDATES # # XFree86 support options SYSVMSG options SYSVSEM options SYSVSHM options UCONSOLE # # Misc. kernel options options "AUTO_EOI_1" options "AUTO_EOI_2" options "COMPAT_43" options "MD5" options BOUNCE_BUFFERS options INCLUDE_CONFIG_FILE options USERCONFIG options USERCONFIG_BOOT options USER_LDT options VISUAL_USERCONFIG # config kernel root on sd0 # # Buses controller isa0 controller pci0 controller pnp0 # # Numeric processor extensions device npx0 at isa? port "IO_NPX" irq 13 vector npxintr # # Floppy controller controller fdc0 at isa? port "IO_FD1" bio irq 6 drq 2 vector fdintr disk fd0 at fdc0 drive 0 # # SCSI controllers controller ahc0 controller scbus0 device sd0 device od0 device st0 device cd0 pseudo-device su pseudo-device ssc options "SCSI_DELAY=1" options SCSI_REPORT_GEOMETRY # # System console and mouse device sc0 at isa? port "IO_KBD" tty irq 1 vector scintr options "MAXCONS=12" options "SC_HISTORY_SIZE=4096" options "MSGBUF_SIZE=32768" device psm0 at isa? port "IO_KBD" conflicts tty irq 12 vector psmintr # # I/O ports device sio0 at isa? port "IO_COM1" flags 0x10 tty irq 4 vector siointr device sio1 at isa? port "IO_COM2" tty irq 3 vector siointr device lpt0 at isa? port? tty irq 7 vector lptintr # # Network adapters device de0 device ep0 at isa? port 0x300 net irq 10 vector epintr # # Networking pseudo-devices pseudo-device loop pseudo-device ether pseudo-device tun 4 pseudo-device bpfilter 4 # # Other pseudo-devices pseudo-device gzip pseudo-device pty 64 pseudo-device vn 4 # # Sound hardware (Luigi Rizzo) device pcm0 at isa? port? tty irq 5 drq 1 flags 0x15 vector pcmintr # root@niobe # ll /dev/sd* brw------- 1 root operator 14, 8 Jul 18 21:56 /dev/sd0 brw------- 1 root operator 14, 19 Jul 18 21:56 /dev/sd0a brw------- 1 root operator 14, 20 Jul 18 21:56 /dev/sd0b brw------- 1 root operator 14, 21 Jul 18 21:56 /dev/sd0d brw------- 1 root operator 14, 22 Jul 18 21:56 /dev/sd0e brw------- 1 root operator 14, 23 Jul 18 21:56 /dev/sd0f brw------- 1 root operator 14, 24 Jul 18 21:56 /dev/sd0g brw------- 1 root operator 14, 25 Jul 18 21:56 /dev/sd0h brw------- 1 root operator 14, 9 Jul 18 21:56 /dev/sd1 brw------- 1 root operator 14, 26 Jul 18 21:56 /dev/sd1e brw------- 1 root operator 14, 27 Jul 18 21:56 /dev/sd1f brw------- 1 root operator 14, 28 Jul 18 21:56 /dev/sd1g brw------- 1 root operator 14, 10 Jul 18 21:56 /dev/sd2 brw------- 1 root operator 14, 29 Jul 18 21:56 /dev/sd2s1 brw------- 1 root operator 14, 30 Jul 18 21:56 /dev/sd2s1e brw------- 1 root operator 14, 31 Jul 18 21:56 /dev/sd2s1f DES -- One two, one two, one two. 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