linux-kernel - Re: mdadm regression tests fail

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Date:   Wed, 5 Jan 2022 09:12:43 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Bruce Dubbs <bruce.dubbs@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-raid@...r.kernel.org
Cc:     "Douglas R. Reno" <renodr2002@...il.com>,
        Pierre Labastie <pierre.labastie@...f.fr>
Subject: Re: mdadm regression tests fail

Hi.
[adding linux-raid mailing list]


On 1/4/22 10:55, Bruce Dubbs wrote:
> I am trying to document the mdadm-4.2 installation procedures for our book,
> https://www.linuxfromscratch.org/blfs/view/svn/postlfs/mdadm.html
> 
> For testing, I am doing a simple:
> 
>   make
>   sudo ./test --keep-going --logdir=test-logs --save-logs
> 
> But I get failures for about half the tests.
> 
> Digging in a bit I just ran:
> 
>  sudo ./test --tests=00raid0 --logdir=test-logs
> 
> This is the first test that fails.  With some hacking, it appears that the first portion of this test that fails is:
> 
>   mdadm -CR $md0 -e0.90 -l0 -n4 $dev0 $dev1 $dev2 $dev3
> 
> This resolves to
> 
>   mdadm -CR /dev/md0 -e0.90 -l0 -n4 /dev/loop0 /dev/loop1 /dev/loop2 /dev/loop3
> 
> There is not a lot of error output in the test, so I manually ran:
> 
>   dd if=/dev/zero of=/tmp/mdtest0 count=20000 bs=1K
>   losetup /dev/loop0 /tmp/mdtest0
> 
> For /dev/loop[0123]
> 
> Then I ran
> 
>   mdadm -CR /dev/md0 -e0.90 -l0 -n4 /dev/loop0 /dev/loop1 /dev/loop2 /dev/loop3
>   mdadm: 0.90 metadata does not support layouts for RAID0
> 
> My question is whether the regression tests in the tarball are valid for mdadm-4.2?
> 
>   -- Bruce Dubbs
>      linuxfromscratch.org
> 
> Note: The kernel is version 5.15.12.

-- 
~Randy