[Rear-users] Rear-users Digest, Vol 8, Issue 1

Schuran, Sven sschuran at maske.de
Fri Nov 28 14:58:43 CET 2008

Hi Schlomo,

sorry for late answer.
What do you mean with rear validate? Is it a feature in rear 1.7.6?



Message: 3
Date: Wed, 15 Oct 2008 15:23:56 +0200
From: Schlomo Schapiro <schlomo at schapiro.org>
Subject: Re: [Rear-users] Rear auf einer SLES10 mit einem DAC960 RAID
To: Discussions about Relax & Recover
	<rear-users at lists.sourceforge.net>
Message-ID: <48F5EEEC.5040407 at schapiro.org>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Hi Sven,

seems like you are the first one with this hardware...

The important info from the log is this:
2008-10-09 15:32:03 Could not guess physical device for '/dev/rd/c0d0p1'
2008-10-09 15:32:03 ERROR Could not guess physical device for '/dev/rd/c0d0p1' 
[48:1] in '/sys/block/rd!c0d0/rd!c0d0p1/dev'.
This is probably a bug in your kernel or in Relax & Recover,
so please file a bug report about this.

Would be interesting to see what '/sys/block/rd!c0d0/rd!c0d0p1/dev' points to ...

To try solving this modify /usr/share/rear/lib/mkdr-functions.sh to read like this:

GuessPhysicalDevice () {
         case "$1" in
                 echo "${1%p*}"
                 Log "Could not guess physical device for '$1'"
                 return 1

Please also do test rear 1.7.6 so that I can make a "tested" 1.8 release. If it 
works then please don't forget "rear validate"

BTW, if you noticed the "!" in the device path. This is how the / is translated 
into sysfs and the addition to handle this gracefully in rear is not yet so old 
(though I don't remember any more when I dealt with this issue, for sure last year).


PS: Thanks for testing the error checking code ... I never tested it due to the 
fact that I don't have unsupported hardware :-)

PPS: Would be nice to see other distros on this RAID controller. The handling of 
! is not identical everywhere. E.g Fedora (in some versions) will also name the 
/dev devices with a ! in the name to match the sysfs name ...

Schuran, Sven wrote:
> Moin,
> Leider will das rear kein Backup erstellen, da er Probleme bei finden der Device ID hat.
> Kann mir da jemand weiterhelfen?
> Danke 
> Sven

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