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[linux-lvm] volume group is no longe be found after lvextend........ ;-(((



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:
//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:
//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 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 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 holodeck lvmconf]# vgchange -a y lvm_volume_01
vgchange
vgchange -- volume group "lvm_volume_01" does not exist



[root 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 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



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