Bug 56575
| Summary: | harddisks configuration limited to disks | ||
|---|---|---|---|
| Product: | [Retired] Red Hat Linux | Reporter: | Neil Darlow <neil> |
| Component: | initscripts | Assignee: | Bill Nottingham <notting> |
| Status: | CLOSED RAWHIDE | QA Contact: | Brock Organ <borgan> |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | 7.2 | CC: | curtis, rvokal |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | i386 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2002-01-25 09:19:30 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
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Description
Neil Darlow
2001-11-21 08:38:48 UTC
Arjan: isn't DMA disabling on CD-ROM/tape being done automatically? Apparently not. I've used hdparm /dev/hdb and hdparm /dev/hdd to report the configuration of my IDE CDROM and HP Colorado Tape drive respectively and they both say that DMA is enabled. I've experienced problems with the IDE CDROM returning busy statuses and being reset and the ide-tape module behaves badly if DMA is enabled (the tape drive isn't DMA capable anyway). With these sorts of things happening I think a simple method of tuning the parameters is needed. DMA is only off for cdroms in the installer kernel. Most cdrom drives are fine with dma, only a small number (well, 20% or so) is actually broken (they advertise DMA capability to the kernel but don't actually support it). Most of those are already on the blacklist and DMA is off for those; it appears that your drive isn't on the blacklist yet.... For tapes it depends on the chipset it appears; we know of 1 specific problem so far with a serverworks chipset vs a seagate tapedrive... If it's of any use the hdparm -I output for my CDROM and Tape drives follows.
I think the CDROM drive manufacturer is Delta and the Tape drive is an HP
Colorado 8GB.
Model=TAPA I84 XDCOR M , FwRev=EV-R.303,
SerialNo=84CXRDMOV re.303
Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic }
RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=0kB, MaxMultSect=0
(maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0
IORDY=yes, tPIO={min:227,w/IORDY:120}, tDMA={min:120,rec:150}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: *mdma0 mdma1 mdma2 *udma0 udma1 udma2
AdvancedPM=no
Model=PH OCOLAROD8 BG , FwRev=.2600020,
SerialNo=XM00392967
Config={ SpinMotCtl Removeable DTR<=5Mbs nonMagnetic }
RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=0kB, MaxMultSect=0
(maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0
IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: sdma0 sdma1 sdma2 mdma0 mdma1 *mdma2
AdvancedPM=no
Either way, you can put hdparm -d 0 /dev/hdd in /etc/rc.local .... This will be changed in 6.64-1; it will tweak non-disks, but only if there is an /etc/sysconfig/harddisk<device> for that explicit device. Since 6.64 isn't public yet...
I know not the wisdom, but this simple patch allowed me to tweak cdrom in
sysconfig.
--- rc.sysinit-5.84.1-1 Fri Sep 21 08:58:58 2001
+++ rc.sysinit Mon Jan 21 03:13:11 2002
@@ -350,7 +350,7 @@
fi
if [ -e "/proc/ide/${disk[$device]}/media" ] ; then
hdmedia=`cat /proc/ide/${disk[$device]}/media`
- if [ "$hdmedia" = "disk" ]; then
+ if [ "$hdmedia" = "disk" -o "$hdmedia" = "cdrom" ]; then
if [ -n "${HDFLAGS[$device]}" ]; then
action $"Setting hard drive parameters for ${disk
[$device]}: " /sbin/hdparm ${HDFLAGS[$device]} /dev/${disk[$device]}
fi
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