Bug 56326

Summary:	Cannot from /dev/md2 to /dev/md1
Product:	[Retired] Red Hat Linux	Reporter:	Renato <renato>
Component:	raidtools	Assignee:	Dave Jones <davej>
Status:	CLOSED WONTFIX	QA Contact:	David Lawrence <dkl>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	7.2	CC:	pfrields, volker
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:	2004-11-25 07:09:55 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 Renato 2001-11-15 17:23:48 UTC

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Description of problem:
I created 3 raid partitions - md0, md1, md2. I remove md1 and try to swap 
md2 to md1. It doesn't work.

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


How reproducible:
Always

Steps to Reproduce:
1. Create 3 'raid 1' partitions: md0, md1, md2
2. Remove /dev/md1 from /etc/raidtab
3. Change /dev/md2 to /dev/md1 in /etc/raidtab	
4. Reboot the machine

Actual Results:  I see the message:
Starting RAID devices: md0 md1
Checking Filesystem
Could this be a zero-length partition ?
fsck.ext2: Attempt to read block from filesystem resulted in short read 
while trying to open /dev/md1

Additional info:

The partition that composes original /dev/md2 are no AUTORAID detection. 
Even though, it seems kernel starting the raid before it gets to the 
script ( rc.sysinit ). 

After the error I described above, when it jumps me to the prompt and I do 
a 'cat /proc/mdtstat', I see md0 and md2. I run 'raidstop /dev/md2' and 
then 'raidstart /dev/md1', look at 'cat /proc/mdstat' and md2 is there 
again !!!