Date: Fri, 13 Aug 1999 23:38:03 -0700 (PDT) From: Matthew Jacob <mjacob@feral.com> To: Karl Denninger <karl@Denninger.Net> Cc: Randy Bush <randy@psg.com>, "Justin T. Gibbs" <gibbs@plutotech.com> Subject: Re: dump to dlt gets write error Message-ID: <Pine.BSF.4.05.9908132336020.69432-100000@semuta.feral.com> In-Reply-To: <19990813191646.A57450@Denninger.Net>
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> I've seen this kind of stupidity before and you're not going to like the
> problem or solution.
>
> Put the DLT on a different SCSI bus (different host adapter) from the disks.
>
> Specifically, separate the fast/wide and narrow SCSI devices.
It isn't even fast/wide && narrow- look at the messages- it is claiming
LVD Ultra2 speeds *AND* 5 MB/s sync mode. That cannot possibly be right-
as far as I know you cannot actually do this. Justin?
>
> I've seen both DLTs and other "non-wide" devices have kittens with disks
> running fast/wide on the same SCSI bus. It usually manifests itself as
> an I/O error on the narrow device - which is exactly what you're getting.
>
> My guess is that the hardware on the narrow (and not-so-fast) device gets
> mightily confused by the shorter signal times (even though they're not
> aimed at that target) and randomly "freaks out" enough to botch an
> operation.
>
> Do you get any kind of DMESG log when the write *fails* (check it) or a
> console log of the actual error?
>
> --
> --
> Karl Denninger (karl@denninger.net) Web: childrens-justice.org
> Tired of the broken divorce system in the United States and what it's doing
> to our kids? SIGN the online petition for equal parental - and children's -
> rights at the above URL. Make a difference in a kid's life today.
> Real-time chat now available from the above web page
>
>
> On Fri, Aug 13, 1999 at 05:05:17PM -0700, Randy Bush wrote:
> > asus p2b-ds 2x350mhz, 128mb
> > two barracudas
> > quantum dlt2000
> > 4.0-currnt of 99.04.03
> >
> > rip.psg.com:/# /do-dump
> > ...
> > DUMP: Date of this level 0 dump: Fri Aug 13 16:07:11 1999
> > DUMP: Date of last level 0 dump: the epoch
> > DUMP: Dumping /dev/rccd5c (/usr) to /dev/nrsa0
> > DUMP: mapping (Pass I) [regular files]
> > DUMP: mapping (Pass II) [directories]
> > DUMP: estimated 2951716 tape blocks.
> > DUMP: dumping (Pass III) [directories]
> > DUMP: dumping (Pass IV) [regular files]
> > DUMP: 11.37% done, finished in 0:38
> > DUMP: 25.73% done, finished in 0:28
> > DUMP: 39.41% done, finished in 0:23
> > DUMP: 51.77% done, finished in 0:18
> > DUMP: 64.66% done, finished in 0:13
> > DUMP: 76.19% done, finished in 0:09
> > DUMP: 88.92% done, finished in 0:04
> > DUMP: write error 2700020 blocks into volume 1
> > DUMP: Do you want to restart?: ("yes" or "no")
> >
> > usually a LOT more fits on a tape, like four machines more.
> >
> > i ran the cleaning tape. i tried different tapes from different batches,
> > including one that worked in the past. it breaks at different places, but
> > always much of the way through that partition.
> >
> > clues solicited.
> >
> > randy
> >
> >
> > Copyright (c) 1992-1999 The FreeBSD Project.
> > Copyright (c) 1982, 1986, 1989, 1991, 1993
> > The Regents of the University of California. All rights reserved.
> > FreeBSD 4.0-CURRENT #0: Sun Jun 13 16:30:40 PDT 1999
> > root@rip.psg.com:/usr/src/sys/compile/RIP-SMP
> > Timecounter "i8254" frequency 1193182 Hz
> > CPU: Pentium II/Xeon/Celeron (686-class CPU)
> > Origin = "GenuineIntel" Id = 0x651 Stepping=1
> > Features=0x183fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR>
> > real memory = 134217728 (131072K bytes)
> > config> USERCONFIG
> > Invalid command or syntax. Type `?' for help.
> > config> pnp 1 0 enable os port0 0x220 port1 0x330 port2 0x388 irq0 5 drq0 1 drq1 5
> > config> pnp 1 1 enable os port0 0x200
> > config> pnp 1 2 enable os port0 0x620 port1 0xa20 port2 0xe20
> > config> quit
> > avail memory = 127676416 (124684K bytes)
> > Programming 24 pins in IOAPIC #0
> > FreeBSD/SMP: Multiprocessor motherboard
> > cpu0 (BSP): apic id: 1, version: 0x00040011, at 0xfee00000
> > cpu1 (AP): apic id: 0, version: 0x00040011,
> > at 0xfee00000
> > io0 (APIC): apic id: 2, version: 0x00170011, at 0xfec00000
> > Preloaded elf kernel "kernel" at 0xc02bc000.
> > Preloaded userconfig_script "/kernel.config" at 0xc02bc09c.
> > ccd0-5: Concatenated disk drivers
> > Probing for devices on PCI bus 0:
> > chip0: <Intel 82443BX host to PCI bridge> rev 0x02 on pci0.0.0
> > chip1: <Intel 82443BX host to AGP bridge> rev 0x02 on pci0.1.0
> > chip2: <Intel 82371AB PCI to ISA bridge> rev 0x02 on pci0.4.0
> > chip3: <Intel 82371AB Power management controller> rev 0x02 on pci0.4.3
> > ahc0: <Adaptec aic7890/91 Ultra2 SCSI adapter> rev 0x00 int a irq 19 on pci0.6.0
> > ahc0: aic7890/91 Wide Channel A, SCSI Id=7, 16/255 SCBs
> > fxp0: <Intel EtherExpress Pro 10/100B Ethernet> rev 0x05 int a irq 19 on pci0.9.0
> > fxp0: Ethernet address 00:a0:c9:df:c8:4e
> > bktr0: <BrookTree 878> rev 0x02 int a irq 18 on pci0.10.0
> > bti2c0: <bt848 Hard/Soft I2C controller>
> > iicbb0: <I2C generic bit-banging driver> on bti2c0
> > iicbus0: <Philips I2C bus> on iicbb0 master-only
> > iicsmb0: <I2C to SMB bridge> on iicbus0
> > smbus0: <System Management Bus> on iicsmb0
> > smb0: <SMBus general purpose I/O> on smbus0
> > iic0: <I2C general purpose I/O> on iicbus0
> > smbus1: <System Management Bus> on bti2c0
> > smb1: <SMBus general purpose I/O> on smbus1
> > Hauppauge WinCast/TV, Philips FR1236 NTSC FM tuner, msp3400c stereo.
> > Detected a MSP3430G-A1
> > Probing for devices on PCI bus 1:
> > vga0: <Matrox model 051f graphics accelerator> rev 0x00 int a irq 16 on pci1.0.0
> > Probing for PnP devices:
> > CSN 1 Vendor ID: CTL00c3 [0xc3008c0e] Serial 0x1fd0a682 Comp ID: PNPb02f [0x2fb0d041]
> > pcm1 (SB16pnp <SB16 PnP> sn 0x1fd0a682) at 0x220-0x22f irq 5 drq 1 flags 0x15 on isa
> > Probing for devices on the ISA bus:
> > sc0 on isa
> > sc0: VGA color <4 virtual consoles, flags=0x0>
> > atkbdc0 at 0x60-0x6f on motherboard
> > atkbd0 irq 1 on isa
> > psm0 irq 12 on isa
> > psm0: model Generic PS/2 mouse, device ID 0
> > sio0 at 0x3f8-0x3ff irq 4 flags 0x10 on isa
> > sio0: type 16550A
> > sio1 at 0x2f8-0x2ff irq 3 on isa
> > sio1: type 16550A
> > pcm0 not probed due to drq conflict with pcm1 at 1
> > fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa
> > fdc0: FIFO enabled, 8 bytes threshold
> > fd0: 1.44MB 3.5in
> > wl0 at 0x300-0x30f irq 7 on isa
> > wl0: address 08:00:6a:2b:dd:a7, NWID 0xaaaa
> > vga0 at 0x3b0-0x3df maddr 0xa0000 msize 131072 on isa
> > npx0 on motherboard
> > npx0: INT 16 interface
> > APIC_IO: Testing 8254 interrupt delivery
> > APIC_IO: routing 8254 via pin 2
> > wl0 XXX: driver didn't set ifq_maxlen
> > Waiting 15 seconds for SCSI devices to settle
> > SMP: AP CPU #1 Launched!
> > sa0 at ahc0 bus 0 target 6 lun 0
> > sa0: <DEC DLT2000 8B37> Removable Sequential Access SCSI-2 device
> > sa0: 5.000MB/s transfers (5.000MHz, offset 15)
> > changing root device to da0s1a
> > da0 at ahc0 bus 0 target 0 lun 0
> > da0: <SEAGATE ST34573LW 5702> Fixed Direct Access SCSI-2 device
> > da0: 80.000MB/s transfers (40.000MHz, offset 15, 16bit), Tagged Queueing Enabled
> > da0: 4340MB (8888924 512 byte sectors: 255H 63S/T 553C)
> > da1 at ahc0 bus 0 target 1 lun 0
> > da1: <SEAGATE ST34573LW 5702> Fixed Direct Access SCSI-2 device
> > da1: 80.000MB/s transfers (40.000MHz, offset 15, 16bit), Tagged Queueing Enabled
> > da1: 4340MB (8888924 512 byte sectors: 255H 63S/T 553C)
> > cd0 at ahc0 bus 0 target 4 lun 0
> > cd0: <TEAC CD-ROM CD-532S 1.0A> Removable CD-ROM SCSI-2 device
> > cd0: 20.000MB/s transfers (20.000MHz, offset 16)
> > cd0: Attempt to query device size failed: NOT READY, Medium not present
> > cd1 at ahc0 bus 0 target 5 lun 0
> > cd1: <YAMAHA CRW4416S 1.0f> Removable CD-ROM SCSI-2 device
> > cd1: 8.333MB/s transfers (8.333MHz, offset 31)
> > cd1: cd present [140956 x 2048 byte records]
> >
> >
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