[linux-lvm] volume group not found????

[Christopher Blunck]

The group (sadly) didn't have much info for me.  As
such, I'll relay on to you what I found to work.

I was able to restore my volume group by:
vgcfgrestore -v -d -n group1 /dev/hdg1

For some reason, when I used vgcfgrestore and
specified  the group1.conf file name it didn't work.

I've noticed the error logs generated from the vg*,
pv*, and lv* commands aren't very helpful.  For
example, say you vgextend an additional 30G.  Then if
you lvextend -L+30G the error message you get isn't an
"error:  you attempted to allocate more space to the
LV than exists in the group".  You get something like
"allocation of 688502 physical blocks warning".  Not
very intuitive.

Best of Luck Alexander,
Chris

--- Alexander Bruns <a.bruns at sauerland.de> wrote:
> Hi,
> 
> 
> > It looks like you have hit the bug 193 in
> bugzilla.
> >
> 
> Okey, I read about this Bug. But where do i found a
> way to get on my
> data on the lvm-partition?
> 
> Greetings, Alex
> 
> 
> > /Magnus
> >
> > Alexander Bruns wrote:
> >
> > > Hi,
> > >
> > > I am new to this group an new to lvm. I
> reinstalled my personal
> server
> > > with redhat 7.1 an wanted to get lvm run over my
> three large
> discs.
> > >
> > > I had the following things running for a short
> while:
> > >
> > > - RedHat 7.1 with all updates.
> > > - self-compiled Kernel 2.4.6 with patched lvm
> 0.9.1_beta7
> > >
> > > On my first HD Igave the rest space to hda7 with
> fdisk and set the
> > > partition to "8e" lvm.
> > >
> > > The i followed the howto at sistina at:
> > >
>
file://sistina.com/lvm/doc/lvm_howto/Common_tasks.html
> > >
> > >
> > > - I initalized the Partition:
> > >   pvcreate /dev/hda7
> > >
> > > - I added the partition to a new volume group:
> > >   vgcreate lvm_volume_01 /dev(hda7
> > >
> > > - then o activated the volume group:
> > >   vgchange -a y lvm_volume_01
> > >
> > > - The I put a logical volume on the volume
> group:
> > >   lvcrate -L50G -nlvm_lv_01 lvm_volume_01
> > >
> > > This logical Volume was then at
> /dev/lvm_volume_01/lvm_lv_01 and o
> > > formated it woith reiserfs an mounted it!
> Evething runs fine.
> > >
> > > I copied the old contents of hdb5 and hdc5 of
> the smaller HDs to
> this
> > > logical volume. on hda7.
> > >
> > >
> > >
> > > Then I added deleted the partition on hdc5, made
> a new one, set it
> to
> > > 8e an added it to the volume group as explained
> at:
> > >
>
file://sistina.com/lvm/doc/lvm_howto/Common_tasks.html
> > >
> > >
> > > pvcreate /dev/hdc5
> > > vgextend lvm_volume_01
> > > lvextend -L30G /dev/lvm_volume_01/lvm_lv_01
> > > resize_reiserfs -f /dev/lvm_volume_01/lvm_lv_01
> > >
> > > That was all fine and i could mount the
> lvm_lv_01 without any
> > > problems.
> > >
> > >
> > > The same I then wanted to manage with the thirt
> HD at hdb5, but
> then
> > > something went wrong??
> > >
> > > Resize reiserfs did something but when i wanted
> to mount the LV it
> did
> > > not work. reiserfs-checks did not found a
> problem but the
> mount-binary
> > > told my something about a superblock......
> > >
> > >
> > > Abter a reboot I now have the following:
> > >
> > > [root at holodeck lvmconf]# pvdisplay /dev/hda7
> > > pvdisplay
> > > --- Physical volume ---
> > > PV Name               /dev/hda7
> > > VG Name               lvm_volume_01
> > > PV Size               48.54 GB / NOT usable 1.06
> MB [LVM: 169 KB]
> > > PV#                   1
> > > PV Status             available
> > > Allocatable           yes (but full)
> > > Cur LV                1
> > > PE Size (KByte)       4096
> > > Total PE              12425
> > > Free PE               0
> > > Allocated PE          12425
> > > PV UUID              
> cFFBJX-aqxr-P7kU-71OY-pgpX-rvtA-XxVpoc
> > >
> > > But for /dev/hdb5 and /ev/hdc5 it does not show
> the same.
> NOTHING!!
> > >
> > >
> > >
> > > And becouse I did not write anything to the
> volumegroup or logical
> > > volume after the added two partition al my data
> must still be on
> hda7.
> > > But how do I manage to get on it?
> > >
> > > The following commands say the folling:
> > >
>
#####################################################
> > >
> > >
> > >
> > > [root at holodeck lvmconf]# vgscan
> > > vgscan
> > > vgscan -- reading all physical volumes (this may
> take a while...)
> > > vgscan -- "/etc/lvmtab" and "/etc/lvmtab.d"
> successfully created
> > > vgscan -- WARNING: This program does not do a
> VGDA backup of your
> > > volume group
> > >
> > > lvm_volume_01 is not found
> > >
> > > [root at holodeck lvmconf]# vgchange -a y
> lvm_volume_01
> > > vgchange
> > > vgchange -- volume group "lvm_volume_01" does
> not exist
> > >
> > >
> > >
> > > [root at holodeck lvmconf]# ls -al /dev/lvm*
> > > crw-r-----    1 root     root     109,   0 Jul
> 20 16:39 /dev/lvm
> > >
> > > /dev/lvm_volume_01:
> > > insgesamt 88
> > > dr-xr-xr-x    2 root     root         4096 Jul
> 20 23:06 .
> > > drwxr-xr-x   15 root     root        81920 Jul
> 28 13:12 ..
> > > crw-r-----    1 root     disk     109,   0 Jul
> 20 23:02 group
> > > brw-rw----    1 root     disk      58,   0 Jul
> 20 23:06 lvm_lv_01
> > >
> > >
> > > [root at holodeck lvmconf]# ls -al
> /dev/lvm_volume_01/
> > > insgesamt 88
> > > dr-xr-xr-x    2 root     root         4096 Jul
> 20 23:06 .
> > > drwxr-xr-x   15 root     root        81920 Jul
> 28 13:12 ..
> > > crw-r-----    1 root     disk     109,   0 Jul
> 20 23:02 group
> > > brw-rw----    1 root     disk      58,   0 Jul
> 20 23:06 lvm_lv_01
> > >
> > >
> > >
> > >
> > > SHIT!
> > >
> > > How do I get on my Data at lvm_volume_01 bzw
> lvm_lv_01.
> > > lvm_lv_01 was formated with reiserfs
> > >
> > >
> > >
> > > Greetings from Germany from Alex
> > >
> 
=== message truncated ===


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