-----Original Message-----
From: Morten Berg <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
Date: Sunday, July 09, 2000 2:26 AM
Subject: [expert] SMP, UDMA, REISERFS, 32GB+
>Hello, I have trouble with my system to use UDMA, works 100%
with dma
>disable....
>
>I have mandrake 7.1, ABIT BP6 (dual celeron 366) with htp366
controller
>(not-overclock) and some large disks.
>
>Well the systems hangs BAD when I enable UDMA transfer, no
logs off the
>error just total freeze.
>After hours (and lots of coffee) searching for answer, I
found this on the
>reiser FAQ:
>
>- Can I use 32GB+ IDE Hard Drives with reiserfs ?
>-Yes, but you need a patch to work it properly.
>-Although, you have to turn DMA off.
>
>So is this true, I have tried to rmod reiserfs and umount
disks using reiser
>but the problem still occurs, must I compile a new kernel
without reiserfs
>support???
>
>Have others problem with the htp366 controller when its full
(4 disk)???
> The system worked with udma when I had 7.0, "only" two 27
gigs and no
>reiserfs.
>
>I have tried this without any success....:-(
>
> - new kernel update 2.2.16 from mandrake
> - kernel 2.4.0-test2 (with reiserfs)
> - noapic to boot parameter
>
>System stats:
>File system (all jumpers are correct, quadrople checked)
>
>Filesystem Size Used Avail Use% Mounted on
>/dev/hda1 2.8G 1.6G 1.1G 60% / (ext2)
>/dev/hde1 42G 27G 15G 65% /mnt/disk0
(reiserfs)
>/dev/hdf1 25G 1.6G 22G 7% /mnt/disk1
(ext2)
>/dev/hdg1 42G 11G 31G 27% /mnt/disk2
(reiserfs)
>/dev/hdh1 25G 23G 1.2G 95% /mnt/disk3 (ext2)
>/dev/hdc1 1.2G 1014M 209M 83% /mnt/utskiftbar
(vfat)
>
>some drive stats:
>
>hdparm -i /dev/hde
>
>/dev/hde: (& /dev/hdg)
>
> Model=WDC WD450AA, FwRev=10.09K11, SerialNo=WD-WMA2E1006211
> Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed
DTR>5Mbs FmtGapReq }
> RawCHS=16383/16/63, TrkSize=57600, SectSize=600, ECCbytes=40
> BuffType=DualPortCache, BuffSize=2048kB, MaxMultSect=16,
MultSect=16
> CurCHS=65535/1/63, CurSects=4128705, LBA=yes,
LBAsects=87930864
> IORDY=on/off, tPIO={min:120,w/IORDY:120},
tDMA={min:120,rec:120}
> PIO modes: pio0 pio1 pio2 pio3 pio4
> DMA modes: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4
>
>/dev/hdf:
>
> Model=IBM-DPTA-372730, FwRev=P78OA30A, SerialNo=JRYJRFF7950
> Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
> RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=34
> BuffType=DualPortCache, BuffSize=1961kB, MaxMultSect=16,
MultSect=16
> CurCHS=65535/1/63, CurSects=4128705, LBA=yes,
LBAsects=53464320
> IORDY=on/off, tPIO={min:240,w/IORDY:120},
tDMA={min:120,rec:120}
> PIO modes: pio0 pio1 pio2 pio3 pio4
> DMA modes: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4
>
>/dev/hdh:
>
> Model=WDC WD273BA, FwRev=P78OA30A, SerialNo=WD-WT9630024232
> Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
> RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=34
> BuffType=DualPortCache, BuffSize=1961kB, MaxMultSect=16,
MultSect=16
> CurCHS=65535/1/63, CurSects=4128705, LBA=yes,
LBAsects=53464320
> IORDY=on/off, tPIO={min:240,w/IORDY:120},
tDMA={min:120,rec:120}
> PIO modes: pio0 pio1 pio2 pio3 pio4
> DMA modes: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4
>
>
Very large Reiserfs might(tm) be ONE of your problems, but the
reason I believe you might be experiencing hard locks is here
http://kt.linuxcare.com/kt20000214_54.epl 2nd article
This is from February, yet nothing indicates that the hardware
manufacturer has changed anything since.
To see if that might be the source of our problem, try
compiling in 386 code for the kernel. You may avoid the
hard-lock that way.
Civileme
