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Bug 61844 - RFE: create/use degraded RAID1 partitions
RFE: create/use degraded RAID1 partitions
Product: Red Hat Linux
Classification: Retired
Component: anaconda (Show other bugs)
i386 Linux
medium Severity medium
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Assigned To: Jeremy Katz
Mike McLean
: FutureFeature
: 70063 1129300 (view as bug list)
Depends On:
  Show dependency treegraph
Reported: 2002-03-25 01:42 EST by Alexandre Oliva
Modified: 2014-08-13 10:38 EDT (History)
1 user (show)

See Also:
Fixed In Version:
Doc Type: Enhancement
Doc Text:
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Clone Of:
Last Closed: 2003-07-28 18:55:16 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Alexandre Oliva 2002-03-25 01:42:11 EST
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.9) Gecko/20020310

Description of problem:
It would be nice if it were possible to create and/or use degraded RAID1
partitions with Anaconda.  Currently, there's no way to add /dev/null as some of
the replicas, as it is possible to do in /etc/inittab, and it refuses to create
a perfectly-valid RAID1 device out of a single partition.

The reason for me to want such a set up is that I like to keep root and boot
partitions replicated across my disks, but when I want to try a new release, I
like to install it from scratch, and then, when I'm confident I can switch to
it, I remove the old RAID devices and spread the new ones such that the space
that would be otherwise unused until the next release can actually be used for
something useful, namely, speeding up access to the root partition.

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

How reproducible:

Steps to Reproduce:
1.Create a single RAID partition
2.Try to create a RAID1 device out of it

Actual Results:  Disk druid refuses to create a 1-disk RAID1 device, and doesn't
offer any way to add more `failed' partitions to the array.

Expected Results:  I'd love to be able to create a RAID1 with say 1 failed
replica, such that I could just raidhotadd my old system partition whenever I
figured I wouldn't need the old root partition any more.

Additional info:
Comment 1 Matt Wilson 2002-03-25 15:11:09 EST
This is a very specialized and confusing case.  I may find some way to implement
it when all other work is done...
Comment 2 Jeremy Katz 2002-07-30 00:41:15 EDT
*** Bug 70063 has been marked as a duplicate of this bug. ***
Comment 3 Jeremy Katz 2003-07-28 18:55:16 EDT
Comment 4 Chris Lumens 2014-08-13 10:38:46 EDT
*** Bug 1129300 has been marked as a duplicate of this bug. ***

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