[linux-lvm] FW: Unrecognised segment type mirror

[linux-lvm] FW: Unrecognised segment type mirror

[Roger Lucas]

Forwarded on behalf of Jose (reasons below) and it doesn't look like the
usual spam in my inbox :-)

-----Original Message-----
From: Jose Massa [mailto:firulo@googlemail.com] 
Sent: 17 February 2006 16:02
To: Roger Lucas
Subject: Unrecognised segment type mirror

Dear Roger,
I'm sorry to bother you with this, but I honestly don't know whom else
to ask regarding an LVM problem that I'm having. I've subscribed to
the LVM list, confirmed my email address, posted twice, but the email
doesn't get through. I've also email the list administrator about the
problem, and he has not replied to my email either. Maybe they are
blocking all googlemail account? Not sure.

But I've thought that maybe you could post it for me (just got a post
from you today so I've thought why not ask...)
If you don't feel comfortable don't worry, I'd understand. But if you
don't mind, I'll really appreciate. I haven't found a reference to
this issue anywhere else so it's one of my last hopes.
Thanks a lot,
-Jose

---------- Forwarded message ----------
From: Jose Massa <firulo@googlemail.com>
Date: Feb 15, 2006 4:39 PM
Subject: Unrecognised segment type mirror
To: linux-lvm@redhat.com

I'm having some strange error with lvm2.
During booting, a pvscan, lvscan, or pretty much any lvm2 command I
get the message "Unrecognised segment type mirror".

My system still works (I hope fine), but I don't like this messages
and I'm not sure what the cause is or whether it could cause
corruption. Anyone has a clue?
The following lines show the console output

mafalda julian # lvscan
 Unrecognised segment type mirror
 Unrecognised segment type mirror
 ACTIVE            '/dev/vg2/misc' [40.00 GB] inherit
 ACTIVE            '/dev/vg2/backup' [43.76 GB] inherit
 Unrecognised segment type mirror
 Unrecognised segment type mirror
 Unrecognised segment type mirror
 Unrecognised segment type mirror
 Unrecognised segment type mirror
 Unrecognised segment type mirror
 Unrecognised segment type mirror
 Unrecognised segment type mirror
 Unrecognised segment type mirror
 ACTIVE            '/dev/vg1/home' [9.71 GB] inherit
 ACTIVE            '/dev/vg1/multimedia' [87.74 GB] inherit
 Unrecognised segment type mirror
 Unrecognised segment type mirror
 Unrecognised segment type mirror
 Unrecognised segment type mirror
 ACTIVE            '/dev/vg0/var' [10.00 GB] inherit
 ACTIVE            '/dev/vg0/opt' [5.00 GB] inherit
 ACTIVE            '/dev/vg0/tmp' [2.00 GB] inherit
 ACTIVE            '/dev/vg0/usr' [15.00 GB] inherit
mafalda julian #

vg0 is running on top of a software RAID-0 device combining two disks.
Vg1 is a concatenation of LVM partitions on the first disk, and vg2 is
a concatenation of LVM partions on the second disk.

thanks

Re: [linux-lvm] FW: Unrecognised segment type mirror

[Jose Massa]

This is what I've tried: I've move all data from an LV somewhere else,
remove the LV, but the errors (or warnings, whatever they are) still
showed up. Then I've recreated the LV, and they are still there. Maybe
I will try doing a full backup and recreating the whole drive. The
point is that before I spend time doing that, I would like to know if
this is some warning or bug present in the code, or whether it is
really some corruption in my hard drive. Will I have the messages
after recreating everything? Did I configure something wrong in my
lvm.conf? I've followed the standard Gentoo LVM installation...

Interesting enough, there is only one post in all google regarding
this (without an answer). It seems to be something very strange, and
I'm afraid that only one of the devs knows what this really means.

I'm just scared about hard drive corruption...
Any thoughts? Thanks,
-Jose