Bug 29730
Summary: | Installer hangs when mounting IDE CDROM | ||
---|---|---|---|
Product: | [Retired] Red Hat Linux | Reporter: | Mogens Kjaer <mk> |
Component: | kernel | Assignee: | Arjan van de Ven <arjanv> |
Status: | CLOSED RAWHIDE | QA Contact: | Brock Organ <borgan> |
Severity: | medium | Docs Contact: | |
Priority: | medium | ||
Version: | 7.1 | CC: | jmbastia |
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: | 2001-03-21 14:25:24 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
Mogens Kjaer
2001-02-27 12:30:17 UTC
There will at least be an option to disable DMA; our current rawhide kernel has ide<n>=nodma available. Can you do me a favour and past the output of cat /proc/ide/hdc/model here? With that info we can auto-set your cdromdrive as "do not use DMA" Will this help during installation, or only after installation? Both machines (IBM Netvista 6578 and Netfinity 3000) have a drive identified as "CRD-8400B". I tried booting the wolverine CD, specifying "linux ide1=nodma", but it still hangs. Mogens Thanks for the drive ID; it's added to the automatic "do not do DMA" list. As for ide1=nodma, the option didn't work too well and got changed to "ide=nodma" which turns of DMA for all drives... the automatic list is MUCH better... Yes, but is this list used during _installation_? Absolutely. It's an in-kernel list of known-bad devices for which the kernel should not attempt DMA. I have two labs filled with 50 some computers with CRD-8400C and CRD-8480M CD-ROM drives, and the computers freeze when installing from the CD. I got around the problem by installing over the network, however, under normal usage of the computer, the machine freezes when trying to 'mount /mnt/cdrom' As mentioned in the above comments, hdparm fixes the drive. I used different options, though. My rc.local script runs 'hdparm -d1 -X34 /dev/hdc' I'm just letting you know the model numbers and my work-around so you can add them to your "do not do DMA list". jmbastia: there is a "ide=nodma" option you could have used on the syslinux prompt. I'll add the drives to the blacklist. Thanks for reporting. samsung cd-rom sc-140 has the same problem. I could not mount it after CD install until i did hdparm -d0 /dev/hdc. for now everything i know of works. |