Bug 83560
| Summary: | ATA100 doesn't work; only getting ATA33. Missing "ide=ata66"????? | ||
|---|---|---|---|
| Product: | [Retired] Red Hat Linux | Reporter: | Aaron Freed <vmorgo> |
| Component: | kernel | Assignee: | Arjan van de Ven <arjanv> |
| Status: | CLOSED DUPLICATE | QA Contact: | Brian Brock <bbrock> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 7.3 | ||
| 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: | 2006-02-21 18:51:37 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: | |||
*** This bug has been marked as a duplicate of 83546 *** Changed to 'CLOSED' state since 'RESOLVED' has been deprecated. |
Description of problem: Unable to get true ATA100 performance from RedHat 7.3. No matter what I do with hdparm, I still get about 22 MB/sec transfer rate from the ATA100 IDE drive, which is about what I get from my other two systems, both of which are only ATA33-capable. Version-Release number of selected component (if applicable): How reproducible: Guaranteed. Cannot get any better performance! ;-< Steps to Reproduce: 1.Install RedHat 7.3 2.Boot. 3.Run hdparm -t /dev/hda1 as root 4.See poor result. 5.Be disappointed. I seem to recall that there was a parameter I could pass to the kernel during the boot process, by appending it to the end of the appropriate line in /etc/grub.conf like this: (added parameter highlighted by "^^^^^^^^^" title Red Hat Linux (2.4.18-24.7.xbigmem) root (hd0,0) kernel /vmlinuz-2.4.18-24.7.xbigmem ro root=/dev/hda2 hdc=ide-scsi ide=ata66 ^^^^^^^^^ initrd /initrd-2.4.18-24.7.xbigmem.img Actual results: Have not tried it, yet. Don't want to trash the central server with an incorrect parameter! Expected results: data transfer rate of > 40 MB/s, as reported by hdparm -t /dev/hda Additional info: I know I reported this once before and Dave Ledford (I think?) kindly sent me the instructions regarding a parameter similar to the above that fixed all my problems and brought about World Peace (almost), but I cannot find that e-mail or the original bug. I'm really sorry to bother you with this again, and I really do appreciate it!