Bug 260901 - mdadm comes before readonly-root in rc.sysinit so diskless boot cannot have mdadm.conf specify homehost
mdadm comes before readonly-root in rc.sysinit so diskless boot cannot have m...
Product: Fedora
Classification: Fedora
Component: mdadm (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Doug Ledford
Fedora Extras Quality Assurance
Depends On:
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Reported: 2007-08-28 12:41 EDT by Alexander Aminoff
Modified: 2008-06-16 22:15 EDT (History)
1 user (show)

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Last Closed: 2008-06-16 22:15:32 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Alexander Aminoff 2007-08-28 12:41:25 EDT
Description of problem:

On a stateless booting system, rc.sysinit runs mdadm -A -s before loading up all
the remote state information, including /etc/mdadm.conf. Therefore mdadm has no
way of knowing what the homehost is supposed to be, so does not start any of the

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


How reproducible:


Steps to Reproduce:
1. Create an array with --homehost=`hostname`, or update an array with

2. Reboot the system. (If the system boots from local disk, you can reproduce
this problem by just removing /etc/mdadm.conf).

3. array is not started.
Actual results:

Expected results:

Additional info:

For a system booting from local disk this is no problem - just put HOMEHOST in
/etc/mdadm.conf and you're done. However, if you want a system to boot stateless
over tftp/pxelinux/NFS, and then automatically start up arrays, there is no
simple way to do it.

It seems to me that there are 2 ways to fix this, depending on whether you
consider the bug to be in mdadm or in initscripts.

mdadm could default to using the current hostname as the HOMEHOST if not
otherwise set.

Or you could change rc.sysinit to run mdadm -A -s after all the readonly-root
stateless stuff. Or, just run it twice - I don't think that would hurt anything.
Comment 1 Bug Zapper 2008-05-14 10:08:45 EDT
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Comment 2 Bug Zapper 2008-06-16 22:15:30 EDT
Fedora 7 changed to end-of-life (EOL) status on June 13, 2008. 
Fedora 7 is no longer maintained, which means that it will not 
receive any further security or bug fix updates. As a result we 
are closing this bug. 

If you can reproduce this bug against a currently maintained version 
of Fedora please feel free to reopen this bug against that version.

Thank you for reporting this bug and we are sorry it could not be fixed.

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