linux-kernel - Re: 2.6.24-rc2=another train wreck with amanda

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Message-Id: <20071107103028.f5166fd3.akpm@linux-foundation.org>
Date:	Wed, 7 Nov 2007 10:30:28 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Gene Heskett <gene.heskett@...il.com>
Cc:	linux-kernel@...r.kernel.org, Stephen Smalley <sds@...ho.nsa.gov>,
	James Morris <jmorris@...ei.org>
Subject: Re: 2.6.24-rc2=another train wreck with amanda

> On Wed, 07 Nov 2007 06:49:01 -0500 Gene Heskett <gene.heskett@...il.com> wrote:
> Greetings;
> 
> I have this line in my /etc/modprobe.conf:
> options dm-mod major=238
> 
> And I had a fsckup while building 2.6.24-rc2 cuz I thought it needed to be 
> based on 2.6.23.1 that has made 2.6.24-rc2 the only kernel that will boot 
> without a panic, killing init message.
> 
> I can survive that, but amanda (tar) went bonkers last night and tried to do a 
> level 0 on everything, which is about 50GB, but its virtual tape size is only 
> 11GB.
> 
> The last time this happened that line above fixed the device mapper to a 
> stable address at a major of 238 which tar was happy with.
> 
> An ls -l of /dev/mapper:
> [root@...ote /]# ls -l /dev/mapper
> total 0
> crw------- 1 root root  10, 62 Nov  6 23:40 control
> brw-rw---- 1 root disk 238,  0 Nov  6 23:40 VolGroup00-LogVol00
> brw-rw---- 1 root disk 238,  1 Nov  6 23:40 VolGroup00-LogVol01
> 
> So that hasn't changed, so what did?  Amanda itself hasn't been changed in 
> several months, running the 20070727 snapshot of amanda-2.5.2p1 all this 
> time.  Tar was updated by smart or yumex 2 or 3 days back, so it worked 
> correctly after the update.  That leaves something in 2.6.24-rc2.  I didn't 
> build rc1.
> 
> Other than that, rc2 seems stable.  But auditd failed to start in the bootup 
> sequence. I think that's minor and may predate this particular kernel.  
> However, selinux did a relabel before it booted, could that be the cause?
> 

An selinux relabelling could well have caused a full backup by amanda.

There's a way of forcing a relabelling so that you can confirm this, but I
forget what it is (cc's added, please).

But we don't know why the relabelling happened, do we?
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