Bug 885268 - dracut corrupts raid1 metadata when set to load md-raid and dm-raid
dracut corrupts raid1 metadata when set to load md-raid and dm-raid
Product: Fedora
Classification: Fedora
Component: mdadm (Show other bugs)
All Linux
unspecified Severity medium
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Assigned To: Jes Sorensen
Fedora Extras Quality Assurance
Depends On:
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Reported: 2012-12-07 19:51 EST by Joshua Covington
Modified: 2013-07-31 21:08 EDT (History)
7 users (show)

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2013-07-31 21:08:12 EDT
Type: Bug
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Description Joshua Covington 2012-12-07 19:51:29 EST
Description of problem:
When I boot without rd.md=0 and rd.dm=0 then dracut properly detects my raid1 but it somehow marks the metadata of the array as durty which makes it resync itself. In addtition to this the detected array partitions cannot be accessed. No error messages are shown. mdadm just freezes and I cannot mount any of the detected raid partitions.

When I boot with rd.md=0 and rd.dm=0 then the array is properly set but each hdd partition is listed 3 times (1x sda1; 1x sdb1; 1x md126p1) in konqueror und gnome (I don't know the name its file manager). In this case I can properly access each partion but if I intentionally touch any of the raid-disks, then they start resyncing.

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

How reproducible:
Boot with any imsm raid1 array and without rd.md=0 and rd.dm=0

Steps to Reproduce:
Actual results:
Paritions either not accessable or listed more than once.

Expected results:
The raid should be detected and porperly initiallized at startup without making it resync itself. Then only the raid partitions should be visible in any file manager, not the actual hdd-paritions.

Additional info:
I'm not sure if this is really a dracut bug or should be filed against udev or udevadm or maybe mdadm? This also happens with f18 and rawhide.
Comment 1 Harald Hoyer 2012-12-14 04:38:23 EST
If your root or /usr device is not on raid, you should always have "rd.md=0 rd.dm=0" on your kernel command line.

Anyway, the problem will soon go away, as we will not autoassemble devices anymore in future dracut versions.
Comment 2 Joshua Covington 2012-12-14 06:01:47 EST
Will there be another helpers (or so) that will do the assembling at startup? What should I do in the mean time? As I said the partitions are listed 3 times in the file explorer.

If I manually deassemble and then reassemble the array after startup then everything is fine in the file explorerr...
Comment 3 Joshua Covington 2013-01-06 04:11:41 EST
Will anyone EVER take a look at this??? It's a month without any useful comments!
Comment 4 Jes Sorensen 2013-01-24 06:00:09 EST
Well we have other bugs to look at as well. Second your bug report is
incomplete. You haven't provided any information about the actual raid
configuration and partition layouts such as /proc/mounts and /proc/mdstat
output, and do you use LVM or not?

As Harald already stated, if you don't have / or /usr on raid, it should
not auto-assemble the array in the initrd, and the assembly then depends
on your /etc/mdadm.conf settings

Please start out by trying the fixes listed in

Comment 5 Jes Sorensen 2013-04-29 05:01:43 EDT
Did you get this resolved based on the above fixes or is this still an issue?

Comment 6 Fedora End Of Life 2013-07-03 18:55:16 EDT
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Comment 7 Fedora End Of Life 2013-07-31 21:08:17 EDT
Fedora 17 changed to end-of-life (EOL) status on 2013-07-30. Fedora 17 is 
no longer maintained, which means that it will not receive any further 
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