Date: Fri, 12 Mar 1999 01:16:30 -0600 From: Chris Csanady <cc@137.org> To: freebsd-scsi@freebsd.org Subject: SCSI disk oddities and Buslogic problems.. Message-ID: <19990312071630.5163DB1@friley-185-205.res.iastate.edu>
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I recently purchased a two new disks, and have noticed some odd behavior.
The drives are IBM DDRS-34560D's. Anyways, whenever I get new disks, I
like to benchmark them.
In this case, I have found that while running the following commands that
the data transfer is very erratic.
dd if=/dev/rda2s3 of=/dev/null bs=128k (or any place on the disk..)
iostat -w 1 da2
Are the statistics output by iostat accurate? The values output by iostat
usually range from 4 to 9MB/s for the DDRS drives. Although it seems
random, it it is consistent in the same place on the drives. Does anyone
else have any input on the DDRS drives? I'm sure it is harmless, but I
can't help but to be bothered by this behavior..
I was just wondering if this is typical with some hard drives. I do not see
this on the seagates that we have at work--the values are near constant.
The other thing problem I have is with a Buslogic 946c. Are these controllers
just really crappy? It is only a interim solution, so it is not a big
deal to me if it gets fixed.. The reason I bring it up is that the errors are
similar to those in the "CAM Ate my Machine" thread. The filesystems in
this case were completely trashed..
Chris Csanady
Here is the output from my current dmesg.
Copyright (c) 1992-1999 FreeBSD Inc.
Copyright (c) 1982, 1986, 1989, 1991, 1993
The Regents of the University of California. All rights reserved.
FreeBSD 4.0-CURRENT #2: Fri Mar 12 00:41:20 CST 1999
ccsanady@friley-185-205.res.iastate.edu:/usr/src/sys/compile/xSMP
Timecounter "i8254" frequency 1193182 Hz
CPU: Pentium Pro (686-class CPU)
Origin = "GenuineIntel" Id = 0x619 Stepping=9
Features=0xfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV
>
real memory = 134217728 (131072K bytes)
avail memory = 127696896 (124704K bytes)
Programming 24 pins in IOAPIC #0
FreeBSD/SMP: Multiprocessor motherboard
cpu0 (BSP): apic id: 0, version: 0x00040011, at 0xfec08000
cpu1 (AP): apic id: 12, version: 0x00040011, at 0xfec08000
io0 (APIC): apic id: 13, version: 0x00170011, at 0xfec00000
Preloaded elf kernel "kernel.quirk" at 0xc02aa000.
Preloaded elf module "ccd.ko" at 0xc02aa0a4.
Preloaded elf module "procfs.ko" at 0xc02aa140.
Preloaded elf module "ntfs.ko" at 0xc02aa1e0.
Preloaded elf module "cd9660.ko" at 0xc02aa27c.
Preloaded elf module "linux.ko" at 0xc02aa31c.
ccd0-3: Concatenated disk drivers
Probing for devices on PCI bus 0:
chip0: <Intel 82440FX (Natoma) PCI and memory controller> rev 0x02 on pci0.0.0
fxp0: <Intel EtherExpress Pro 10/100B Ethernet> rev 0x02 int a irq 18 on
pci0.6.
0
fxp0: Ethernet address 00:a0:c9:55:9e:4f
chip1: <Intel 82371SB PCI to ISA bridge> rev 0x01 on pci0.7.0
ahc0: <Adaptec aic7880 Ultra SCSI adapter> rev 0x00 int a irq 17 on pci0.9.0
ahc0: aic7880 Wide Channel A, SCSI Id=7, 16/255 SCBs
vga0: <Matrox MGA 2064W graphics accelerator> rev 0x01 int a irq 16 on
pci0.11.0
bt0: <Buslogic Multi-Master SCSI Host Adapter> rev 0x00 int a irq 17 on
pci0.15.
0
bt0: BT-946C FW Rev. 4.28D Narrow SCSI Host Adapter, SCSI ID 7, 100 CCBs
bktr0: <BrookTree 848a> rev 0x12 int a irq 18 on pci0.17.0
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
smbus1: <System Management Bus> on bti2c0
Hauppauge WinCast/TV, Philips FR1236 NTSC FM tuner, dbx stereo.
fxp1: <Intel EtherExpress Pro 10/100B Ethernet> rev 0x04 int a irq 19 on
pci0.19
.0
fxp1: Ethernet address 00:a0:c9:c8:d3:44
Probing for devices on the ISA bus:
sc0 on isa
sc0: VGA color <16 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 on isa
sio0: type 16550A
sio1 at 0x2f8-0x2ff irq 3 on isa
sio1: type 16550A
pcm0 at 0x530 irq 5 drq 1 flags 0xa610 on isa
mss_attach <mss>0 at 0x530 irq 5 dma 1:0 flags 0xa610
fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa
fdc0: FIFO enabled, 8 bytes threshold
vga0 at 0x3b0-0x3df maddr 0xa0000 msize 131072 on isa
npx0 on motherboard
npx0: INT 16 interface
ntfs_init():
APIC_IO: routing 8254 via 8259 on pin 0
Waiting 2 seconds for SCSI devices to settle
SMP: AP CPU #1 Launched!
da0 at bt0 bus 0 target 0 lun 0
da0: <QUANTUM FIREBALL ST3.2S 0F04> Fixed Direct Access SCSI-2 device
bt0: btfetchtransinfo - Inquire Sync Info Failed 0x7
da0: 3.300MB/s transfers, Tagged Queueing Enabled
da0: 3090MB (6328861 512 byte sectors: 255H 63S/T 393C)
da1 at bt0 bus 0 target 1 lun 0
da1: <QUANTUM FIREBALL ST3.2S 0F04> Fixed Direct Access SCSI-2 device
bt0: btfetchtransinfo - Inquire Setup Info Failed
da1: 216268.800MB/s transfers (524288bit), Tagged Queueing Enabled
da1: 3090MB (6328861 512 byte sectors: 255H 63S/T 393C)
da3 at ahc0 bus 0 target 1 lun 0
da3: <IBM DDRS-34560D DC1B> Fixed Direct Access SCSI-2 device
da3: 40.000MB/s transfers (20.000MHz, offset 8, 16bit)
da3: 4357MB (8925000 512 byte sectors: 255H 63S/T 555C)
da2 at ahc0 bus 0 target 0 lun 0
da2: <IBM DDRS-34560D DC1B> Fixed Direct Access SCSI-2 device
da2: 40.000MB/s transfers (20.000MHz, offset 8, 16bit)
da2: 4357MB (8925000 512 byte sectors: 255H 63S/T 555C)
cd0 at bt0 bus 0 target 6 lun 0
cd0: <NAKAMICH MJ-5.16S 1.07> Removable CD-ROM SCSI-2 device
bt0: btfetchtransinfo - Inquire Sync Info Failed 0x7
cd0: 3.300MB/s transfers
cd0: Attempt to query device size failed: NOT READY, Medium not present
cd1 at bt0 bus 0 target 6 lun 1
cd1: <NAKAMICH MJ-5.16S 1.07> Removable CD-ROM SCSI-2 device
bt0: btfetchtransinfo - Inquire Setup Info Failed
cd1: 216268.800MB/s transfers (524288bit)
cd1: Attempt to query device size failed: NOT READY, Medium not present
cd2 at bt0 bus 0 target 6 lun 2
cd2: <NAKAMICH MJ-5.16S 1.07> Removable CD-ROM SCSI-2 device
cd2: 10.000MB/s transfers (10.000MHz, offset 15)
cd2: Attempt to query device size failed: NOT READY, Medium not present
ffs_mountfs: superblock updated for soft updates
ffs_mountfs: superblock updated for soft updates
ffs_mountfs: superblock updated for soft updates
cd3 at bt0 bus 0 target 6 lun 3
cd3: <NAKAMICH MJ-5.16S 1.07> Removable CD-ROM SCSI-2 device
bt0: btfetchtransinfo - Inquire Sync Info Failed 0x7
cd3: 3.300MB/s transfers
cd3: Attempt to query device size failed: NOT READY, Medium not present
(cd4:bt0:0:6:4): CCB 0xc5920240 - timed out
(cd4:bt0:0:6:4): CCB 0xc5920240 - timed out
bt0: No longer in timeout
cd4 at bt0 bus 0 target 6 lun 4
cd4: <NAKAMICH MJ-5.16S 1.07> Removable CD-ROM SCSI-2 device
bt0: btfetchtransinfo - Inquire Sync Info Failed 0x7
cd4: 3.300MB/s transfers
cd4: Attempt to query device size failed: NOT READY, Logical unit is in
process
of becoming ready
(da0:bt0:0:0:0): CCB 0xc5920240 - timed out
bt0: No longer in timeout
ffs_mountfs: superblock updated for soft updates
ffs_mountfs: superblock updated for soft updates
ffs_mountfs: superblock updated for soft updates
ffs_mountfs: superblock updated for soft updates
ffs_mountfs: superblock updated for soft updates
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