That's Red Hat putting the root file system on an LVM logical volume.
Ugh.  I hate when that is done.

You might have a shot at getting something to mount if you do this for
starters:
pvscan
vgscan
lvscan

If LVM finds the logical volume, and there aren't any conflicts, it
might create a device node for it.  You should then be able to mount the
resulting logical volume.


Mark Post

-----Original Message-----
From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of
Jones, Russell
Sent: Wednesday, January 17, 2007 9:40 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: New HOWTO: Cloning Red Hat Linux Running in an LPAR

The df command shows the following:

[EMAIL PROTECTED] dev]# df
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
                       6676408   1430704   4906556  23% /
/dev/dasda1              99168     14560     79492  16% /boot
none                     61260         0     61260   0% /dev/shm

The following are present in the /dev directory:

brw-rw----  1 root disk  94,  0 Jan 16 11:37 dasda
brw-rw----  1 root disk  94,  1 Jan 16 11:37 dasda1
brw-rw----  1 root disk  94,  2 Jan 16 11:37 dasda2
brw-rw----  1 root disk  94,  4 Jan 16 11:43 dasdb
brw-rw----  1 root disk  94,  5 Jan 16 11:43 dasdb1
brw-rw----  1 root disk  94,  6 Jan 16 11:43 dasdb2

dasdb1 in the only one that I can get to mount. When I try to mount
dasdb2 I get:

[EMAIL PROTECTED] dev]# mount /dev/dasdb2 /mnt/322C
mount: you must specify the filesystem type

When I try to specify type ext3 I get:

[EMAIL PROTECTED] dev]# mount /dev/dasdb2 /mnt/322C -t ext3
mount: wrong fs type, bad option, bad superblock on /dev/dasdb2,
       or too many mounted file systems

Does Centos/RedHat Enterprise 4 use a different filesytem type, and if
so, how do I find out what it is?
Also, I am curious why df shows the root file system at
/dev/mapper/VolGroup00-LogVol00.

Thanks for your patience with me,

Russ Jones

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