Bug 58719

Summary:	Boot troubles with IDE
Product:	[Retired] Red Hat Linux	Reporter:	Michal Jaegermann <michal>
Component:	kernel	Assignee:	Beth Uptagrafft <bhu>
Status:	CLOSED DUPLICATE	QA Contact:	Beth Uptagrafft <bhu>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	7.3
Target Milestone:	---
Target Release:	---
Hardware:	alpha
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2002-02-05 00:37:12 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:

Description Michal Jaegermann 2002-01-23 18:46:00 UTC

Description of Problem:

With kernel 2.4.9-14a used on UP1100 with the following IDE devices:

hda: Maxtor 31024H2, ATA DISK drive
hdb: IBM-DJNA-370910, ATA DISK drive
hdc: Maxtor 51536H2, ATA DISK drive
hdd: CREATIVE CD5233E, ATAPI CD/DVD-ROM drive

DMA gets turned on (only) for hdb and I am getting immediately
"not ready for a command" and timeouts when trying to access hdb.
I have to pass 'ide=nodma' to be able to boot at all.  Once booted
I see:

hda: 20010816 sectors (10246 MB) w/512KiB Cache, CHS=19852/16/63
hdb: 17803440 sectors (9115 MB) w/1966KiB Cache, CHS=17662/16/63
hdc: 30015216 sectors (15368 MB) w/2048KiB Cache, CHS=29777/16/63

If I am using 2.4.9-14a hacked to boot on UP1500 (see #58498)
or 2.4.17 then for some reasons DMA is not turned on and I can boot.

When using 2.4.17 with Andre Hedrick patches and no manual
interventions I get

hda: 20010816 sectors (10246 MB) w/512KiB Cache, CHS=19852/16/63, UDMA(66)
hdb: 17803440 sectors (9115 MB) w/1966KiB Cache, CHS=17662/16/63, UDMA(33)
hdc: 30015216 sectors (15368 MB) w/2048KiB Cache, CHS=29777/16/63, UDMA(66)

na no problems when booting or using this kernel.  With various kernels
from "ac" series, like 2.4.5-ac8 or 2.4.13-ac8 I even observe

hda: 20010816 sectors (10246 MB) w/512KiB Cache, CHS=19852/16/63, UDMA(66)
hdb: 17803440 sectors (9115 MB) w/1966KiB Cache, CHS=17662/16/63, UDMA(66)
hdc: 30015216 sectors (15368 MB) w/2048KiB Cache, CHS=29777/16/63, UDMA(66)

which is possibly aggresive but still trouble free and disks perform
quite a bit better. :-)

Comment 1 Jeff Wiedemeier 2002-02-04 15:39:47 UTC

Michal,

Can you try rebuilding 2.4.9-14a with the ALi15x3 driver enabled to confirm
whether or not this solves the problem on your up1100 (see bug 59276)

Comment 2 Michal Jaegermann 2002-02-05 00:37:06 UTC

Turning on ALi15x3 support indeed does solve the problem.  Actually DMA
is turned on automatically for all IDE drives and they perform as expected.
But for a change something new shows up.  See #59312.

Comment 3 Beth Uptagrafft 2002-02-08 20:53:19 UTC

Since this issue was resolved by turning on ALi15x3 support (see bug 59276), 
this issue will be marked as a duplicate of 59276, since that case states the 
details on what's needed. The new problem encountered is described in #59312.
 

*** This bug has been marked as a duplicate of 59276 ***