Re: sun blade 100 hard disk
On Fri, 17 Jun 2005, Admar Schoonen wrote:
On Fri, Jun 17, 2005 at 12:36:49PM +0200, Olivier BERT wrote:
I'm sorry to post many messages but I have have another problem.
It concerns IDE devices. My Debian is installed now but when copy large
files for example or when I make several disk operations at the same time,
errors appears in my file system. For example, some null characters appear
in some files.
I am about to think that it is a DMA problem. But my knowledge concerning
hardware is a bit limited.
- Is it an hardware problem ?
- may be a problem of connections between the disk and the IDE bus on the
moter board ?
- is it a software or hardware problem ?
I don't know. I never noticed any problems with my 20 GB and 120 GB drives (both
seagate fwiw) in my blade 100; not with Solaris 8 neither with Linux 2.6.x
(using ufs in Solaris and ext3 in Linux). I never did any tricks with hdparm to
set the DMA level or something.
Things that come to mind:
- do you use a proper cable? I'm not sure if it's an ATA66 or ATA100 controller
in the blade 100, so I use an ATA100 cable to connect the 120 GB drive (20 GB
still uses the default cable that came with the box). I'm not sure if ATA66
and ATA100 cables differ, but for at least ATA100 it is required that every
signal wire has it's own ground wire iirc (thus, a 40 pin cable has actually
- what filesystem do you use? I've read somewhere that there could be problems
with Reiserfs on sparc, though I don't know any details.
There is also a strange thing. In my dmesg, as in hdparm, my hard disk is
seen as a 40GB. But I am nearly sure that it is a 20GB (as detected in
fdisk) and as it is written on the internet.
I attach the output of my hdparm -I.
What is the real size of my disk ?
ATA device, with non-removable media
Model Number: WDC WD400BB-23DEA0
Serial Number: WD-WMAD1E447435
Firmware Revision: 05.03E05
Supported: 5 4 3 2
Likely used: 6
Logical max current
cylinders 16383 16383
heads 16 16
sectors/track 63 63
CHS current addressable sectors: 16514064
LBA user addressable sectors: 78165360
device size with M = 1024*1024: 38166 MBytes
device size with M = 1000*1000: 40020 MBytes (40 GB)
LBA, IORDY(can be disabled)
bytes avail on r/w long: 40 Queue depth: 1
Standby timer values: spec'd by Standard, with device specific minimum
R/W multiple sector transfer: Max = 16 Current = 16
Recommended acoustic management value: 128, current value: 254
DMA: mdma0 mdma1 mdma2 udma0 udma1 *udma2 udma3 udma4 udma5
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns IORDY flow control=120ns
* READ BUFFER cmd
* WRITE BUFFER cmd
* Host Protected Area feature set
* Power Management feature set
Security Mode feature set
* SMART feature set
* Device Configuration Overlay feature set
Automatic Acoustic Management feature set
SET MAX security extension
* DOWNLOAD MICROCODE cmd
* SMART self-test
* SMART error logging
not expired: security count
not supported: enhanced erase
HW reset results:
CBLID- above Vih
Device num = 0 determined by CSEL