Could the /dev/dasdb2 filesystem have been an LVM "volume group"?

/dev/mapper/VolGroup00-LogVol00 would be the type of things you might see
for LVM volumes.

My system shows the following in df (truncated because I love loop-back
mounts...)

rockhopper:~ # df
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/mapper/system-rockhopper
                       8589044   7863536    725508  92% /
tmpfs                   405156         4    405152   1% /dev/shm
/dev/dasda1              86380     14756     67168  19% /boot
/dev/mapper/vg_iso-lv_media
                      27355500  25573528   1504100  95% /iso
/dev/mapper/vg_local-lv_ibmitm
                       6713132    220156   6492976   4% /opt/IBM/ITM

/dev/dasda1 is my /boot, and everything else are LVM volumes.

Try the command "pvdisplay /dev/dasdb2" to see if it is a physical volume
that was part of a volume group. If it was, then possibly try "vgscan" to
see if it finds /dev/dasdb2 as part of a volume group. The big problem might
come if the volume group has the same name as the one on the system you've
attached it to....
--
   .~.    Robert P. Nix             Mayo Foundation
   /V\    RO-OC-1-13              200 First Street SW
 / ( ) \  507-284-0844           Rochester, MN 55905
^^-^^   -----
        "In theory, theory and practice are the same, but
         in practice, theory and practice are different."


> From: "Jones, Russell" <[EMAIL PROTECTED]>
> Reply-To: Linux on 390 Port <LINUX-390@VM.MARIST.EDU>
> Date: Wed, 17 Jan 2007 08:39:47 -0600
> To: <LINUX-390@VM.MARIST.EDU>
> Conversation: New HOWTO: Cloning Red Hat Linux Running in an LPAR
> 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
>
>
>
> -----Original Message-----
> From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of
> Post, Mark K
> Sent: Tuesday, January 16, 2007 6:17 PM
> To: LINUX-390@VM.MARIST.EDU
> Subject: Re: New HOWTO: Cloning Red Hat Linux Running in an LPAR
>
> Whatever the partition number on the source volume, will be the
> partition number on the target volume.  So, if your root partition is
> /dev/dasda2 on the source, then in your case the root partition will be
> /dev/dasdb2 on the system where you are modifying it.  If it was
> /dev/dasda3, then use /dev/dasdb3.
>
>
> Mark Post
>
> -----Original Message-----
> From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of
> Jones, Russell
> Sent: Tuesday, January 16, 2007 5:01 PM
> To: LINUX-390@VM.MARIST.EDU
> Subject: Re: New HOWTO: Cloning Red Hat Linux Running in an LPAR
>
> I have been working through the HowTo on Cloning Red Hat Linux. I copied
> my Linux dasd volume using MVS. I brought the new volume online, and it
> showed up as dasdb. When I mount /dev/dasdb1, I seems to be mounting the
> boot partition and not the root file system. Any suggestions would be
> appreciated.
>
> Thanks,
>
> Russ Jones
>
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