Bug 159614

Summary:	SATA drive mapped as a SCSI drive
Product:	Red Hat Enterprise Linux 4	Reporter:	Need Real Name <aewell>
Component:	kernel	Assignee:	Kernel Maintainer List <kernel-maint>
Status:	CLOSED NOTABUG	QA Contact:	Brian Brock <bbrock>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	4.0
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:	2005-06-07 17:39:43 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 Need Real Name 2005-06-06 01:38:53 UTC

From Bugzilla Helper:
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Description of problem:
Hi All,

   I am using White Box Enterprise Linux 4 (WBEL 4).

   My system runs off an LSI SATA-4 RAID controller.
I also have an Adaptec 2047600, SATAConnect 1205SA 
controller that is used with my backup SATA hot swap drives
(cheaper and faster than digital tape).

   Under WBEL 3, the SATA drive was treated as an IDE drive
(/dev/hda).    Under WBEL 4, it is now a SCSI drive. 

  When the removable backup SATA drive is not installed, WBEL 
maps the RAID drive as /dev/sda.  When the removable SATA
drive is installed, it gets mapped as /dev/sda and the RAID drive
gets bumped to /dev/sdb.  Then whoever is responsible for /etc/fstab
at boot goes through and fixes the drive mapping (except the swap
partition, which it misses and I will post under another bug).

   This is a total pain in the neck.  SATA drives are not SCSI drives.
Please map them in the same manner as you did under WBEL 3.

Many thanks,
--Tony

Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1. please see description
2.
3.
  

Additional info:

Comment 1 Harald Hoyer 2005-06-06 13:58:36 UTC

use filesystem labels or udev rules for a symlink... indeed SATA is now
recognized as SCSI...

Comment 2 Need Real Name 2005-06-06 17:22:16 UTC

Dude!  Shall we start calling floppy drives CD-ROM drives? Shall
we call SAS drives ATA drives?  (S)ATA drives are not SCSI drives.
Thne technology is vastly different.

You should only call drives that are connected to SCSI adapters
or adapters that present themselves as SCSI adapters as SCSI drives.  
(This would cover SATA drives in RAID controllers that support both
SAS and SATA).

This is indeed a bug.  Please fix.  I(f you still disagree with me, please
as a senior technican with hardware experience for help.

--Tony

Comment 3 Harald Hoyer 2005-06-07 07:01:25 UTC

I agree, that (S)ATA drives are not SCSI drives. Your solution would be to use
filesystem labels or rename (or better symlink) your drives with udev rules.

For a discussion of why SATA drives are mapped in the SCSI driver layer, I'll
reassign this bug to the component "kernel"