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Old 11-12-2009, 07:38 AM
Martin Bretschneider
Default LVM not recognized, Part II


I still have to same problem that newer kernels from Debian do not
recognize a LVM during boot. I already send this problem to this mailing
list 7 weeks ago (see below) but did not get any answer.

Today, I wanted to upgrade a etch'n'half kernel from
"linux-image-2.6.24-etchnhalf.1-686_2.6.24-6~etchnhalf.8_i386" to
"linux-image-2.6.24-etchnhalf.1-686_2.6.24-6~etchnhalf.9etch1_i386" and
got the same result. So, the kernel or the configuration is not the
problem (/boot/condfig) is the same. It must be something different. It
looks that it depends when the kernel has been compiled or installed...

Here is an overview which kernels are OK:

LVM works:

LVM does not work:

Do you know any solution since I do not know any?

TIA Martin

-------- Original-Nachricht --------
Betreff: LVM on Lenny's 2.6.26 not recognized
Weitersenden-Datum: Mon, 21 Sep 2009 14:33:11 +0000 (UTC)
Weitersenden-Von: debian-kernel@lists.debian.org
Datum: Mon, 21 Sep 2009 16:09:19 +0200
Von: Martin Bretschneider <martin.bretschneider@imr.uni-hannover.de>
An: debian-kernel@lists.debian.org


I updated a server from Etch to Lenny. It uses a external storage
solution to store a lot of data that is connected via SCSI. The server
has a PCI card that is used by the sym53c8xx kernel module. On the
storage solution are several physical disk that are combined by LVM on
the server.

But when I rebooted the server with now Lennys 2.6.26er kernel and the
userspace apps the LVM volume was not regonized.

However, if I ignored the errors that the volume could not be mounted
and used the login and did the following

/sbin/vgchange -a y

the volume was recognized and useable. I wondered why this worked and
had a closer look at the startup script of lvm in /etc/init.d/ but they
looked sufficient. I also put the two commands in an additional script
that is run after the normal lvm scripts and before S30checkfs.sh and
S35mountall.sh but it also did not worked.

If I boot a kernel from Etch the volume is recognized.

So I guess that it is a bug of the kernel or the packaging... What do
you think?

TIA Martin

Dipl.-Wirtsch.-Ing. Martin Bretschneider

Institut für Mess- und Regelungstechnik
Leibniz Universität Hannover
Nienburger Straße 17
30167 Hannover

Telefon: +49 511 762-4456
Fax: +49 511 762-3234

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