Adding drive with LVM to the exisitng system
 

//I posted this in software forum. But i guess it was a wrong choice

Hello,
I'm new to the LVM thoug silly quesitons. Appreciate any help.

situation is simple.
I have RH3 with LVM on it.
Plus i have external USB ide drive with Fedore 3 ( or whatever the lastest one is ).
The story goes like this :
1. we used to have fedore running on PC.
2. We got server with preinstalled RH3.
3. the PC has been taken away and hard drive left for our purpises.

Task is :
to mount said hard drive.

i can see it under devices ( /dev/sde):

[ZZ]$ sudo /sbin/fdisk -l

Disk /dev/sda: 146.8 GB, 146815733760 bytes
255 heads, 63 sectors/track, 17849 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/sda1 1 7 56196 de Dell Utility
/dev/sda2 8 334 2626627+ 83 Linux
/dev/sda3 * 335 359 200812+ 83 Linux
/dev/sda4 360 17849 140488425 f Win95 Ext'd (LBA)
/dev/sda5 360 1633 10233373+ 83 Linux
/dev/sda6 1634 1894 2096451 83 Linux
/dev/sda7 1895 3168 10233373+ 83 Linux
/dev/sda8 3169 3299 1052226 83 Linux
/dev/sda9 3300 3553 2040223+ 82 Linux swap
/dev/sda10 3554 17849 114832588+ 83 Linux
<skip>
Disk /dev/sdd: 146.8 GB, 146815733760 bytes
255 heads, 63 sectors/track, 17849 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/sdd1 1 17849 143372061 83 Linux

Disk /dev/sde: 200.0 GB, 200049647616 bytes
255 heads, 63 sectors/track, 24321 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

[ZZ]$ mount
/dev/sda6 on / type ext3 (rw)
none on /proc type proc (rw)
none on /dev/pts type devpts (rw,gid=5,mode=620)
usbdevfs on /proc/bus/usb type usbdevfs (rw)
/dev/sda3 on /boot type ext2 (rw)
none on /dev/shm type tmpfs (rw)
/dev/sda8 on /tmp type ext3 (rw)
/dev/sda5 on /usr type ext3 (rw)
/dev/sda7 on /var type ext3 (rw)
/dev/apps/u01 on /u01 type ext3 (rw)
/dev/backup/oraback on /oraback type ext3 (rw)
/dev/sda2 on /home type ext3 (rw)
oracleasmfs on /dev/oracleasm type oracleasmfs (rw)

[ZZ]$ sudo /sbin/lvmdiskscan
lvmdiskscan -- reading all disks / partitions (this may take a while...)
lvmdiskscan -- /dev/sda1 [ 54.88 MB] free whole disk
lvmdiskscan -- /dev/sdb1 [ 100 GB] free whole disk
lvmdiskscan -- /dev/sdc1 [ 100 GB] free whole disk
lvmdiskscan -- /dev/sdd1 [ 136.73 GB] USED LVM whole disk
lvmdiskscan -- /dev/sde1 [ 298.05 MB] free whole disk
lvmdiskscan -- 5 disks
lvmdiskscan -- 5 whole disks
lvmdiskscan -- 0 loop devices
lvmdiskscan -- 0 multiple devices
lvmdiskscan -- 0 network block devices
lvmdiskscan -- 17 partitions
lvmdiskscan -- 0 LVM physical volume partitions


[ZZ]$ sudo /sbin/pvscan
pvscan -- reading all physical volumes (this may take a while...)
pvscan -- ACTIVE PV "/dev/sda10" of VG "apps" [109.47 GB / 60.62 GB free]
pvscan -- ACTIVE PV "/dev/sdd1" of VG "backup" [136.69 GB / 63.44 GB free]
pvscan -- total: 2 [246.24 GB] / in use: 2 [246.24 GB] / in no VG: 0 [0]




--
so to my inexperienced eye - the device is there, but i lvm doesn't think(see it ) it is there.
Please advise.
thank you.

The first thing to do is to enable all VGs :
vgchange -ay
After that, you should be able to see your LVM partitions, I think.

Also, make sure that the LVM module (dm_mod) are loaded on startup.

NB : There's is an LVM related document in the gentoo.org documentations.
This is not your distrib, but maybe it would help too...

HTH
Flupke

no luck.
i even mounted the sde1 - which used ot be a / partitions on old machine.
[ZZ]$ mount
/dev/sda6 on / type ext3 (rw)
none on /proc type proc (rw)
none on /dev/pts type devpts (rw,gid=5,mode=620)
usbdevfs on /proc/bus/usb type usbdevfs (rw)
/dev/sda3 on /boot type ext2 (rw)
none on /dev/shm type tmpfs (rw)
/dev/sda8 on /tmp type ext3 (rw)
/dev/sda5 on /usr type ext3 (rw)
/dev/sda7 on /var type ext3 (rw)
/dev/apps/u01 on /u01 type ext3 (rw)
/dev/backup/oraback on /oraback type ext3 (rw)
/dev/sda2 on /home type ext3 (rw)
oracleasmfs on /dev/oracleasm type oracleasmfs (rw)
<B>/dev/sde1 on /mnt/usb type ext3 (rw)</B>
[ZZ]$ sudo /sbin/pvscan
Password:
pvscan -- reading all physical volumes (this may take a while...)
pvscan -- ACTIVE PV "/dev/sda10" of VG "apps" [109.47 GB / 60.62 GB free]
pvscan -- ACTIVE PV "/dev/sdd1" of VG "backup" [136.69 GB / 63.44 GB free]
pvscan -- total: 2 [246.24 GB] / in use: 2 [246.24 GB] / in no VG: 0 [0]

[ZZ]$ sudo /sbin/lvmdiskscan
lvmdiskscan -- reading all disks / partitions (this may take a while...)
lvmdiskscan -- /dev/sda1 [ 54.88 MB] free whole disk
lvmdiskscan -- /dev/sdb1 [ 100 GB] free whole disk
lvmdiskscan -- /dev/sdc1 [ 100 GB] free whole disk
lvmdiskscan -- /dev/sdd1 [ 136.73 GB] USED LVM whole disk
lvmdiskscan -- /dev/sde1 [ 298.05 MB] free whole disk
lvmdiskscan -- 5 disks
lvmdiskscan -- 5 whole disks
lvmdiskscan -- 0 loop devices
lvmdiskscan -- 0 multiple devices
lvmdiskscan -- 0 network block devices
lvmdiskscan -- 17 partitions
lvmdiskscan -- 0 LVM physical volume partitions


I don't see nay new/different info from before.

UPdate:
If i go into /proc/lvm :

[ZZ]$ cat ./global
LVM module LVM version 1.0.8-2(26/05/2004)

Total: 2 VGs 2 PVs 2 LVs (2 LVs open 2 times)

Global: 69766 bytes malloced IOP version: 10 23 days 7:46:52 active

VG: apps [1 PV, 1 LV/1 open] PE Size: 32768 KB
Usage [KB/PE]: 114786304 /3503 total 51216384 /1563 used 63569920 /1940 free
PV: [AA] sda10 114786304 /3503 51216384 /1563 63569920 /1940
LV: [AWDL ] u01 51216384 /1563 1x open

VG: backup [1 PV, 1 LV/1 open] PE Size: 32768 KB
Usage [KB/PE]: 143327232 /4374 total 76808192 /2344 used 66519040 /2030 free
PV: [AA] sdd1 143327232 /4374 76808192 /2344 66519040 /2030
LV: [AWDL ] oraback 76808192 /2344 1x open
[ZZ]$ cd VGs/
[]$ ls -l
total 0
dr-xr-xr-x 4 root root 0 Jun 12 19:01 apps
dr-xr-xr-x 4 root root 0 Jun 12 19:01 backup

so damn thing can see only 2 VG.

this is smth more interesting:
[ZZ /]$ sudo /sbin/pvdata -a /dev/sde2
--- NEW Physical volume ---
PV Name /dev/sde2
VG Name
PV Size 0 [0 secs]
PV# 0
PV Status NOT available
Allocatable NO
Cur LV 0
PE Size (KByte) 0
Total PE 0
Free PE 0
Allocated PE 0
PV UUID none


--- List of logical volumes ---

Segmentation fault