[mythtv-users] LVM problem

griz_quattro griz_quattro at tx.rr.com
Sun Dec 24 17:47:15 UTC 2006


I am a newb to Linux. Been following FC6 guide at
http://wilsonet.com/mythtv/fcmyth.php but cannot
get my volume group "seen".

Searching and using http://mythtv.org/docs/mythtv-HOWTO.html#toc24.1
and http://tldp.org/HOWTO/LVM-HOWTO/ for answers to where I missed a
step but I am at a loss. Google seemed to point to recovering from a 
failed LVM drive

I setup LVM at install when loading FC6 (Fedora) on two 300gb hdd,
using both for Volume Group called "Video_Vol". First HDD is sda
has the system partitions on sda1 thru sda5, second HDD is sdb
with partition sdb1, and third HDD is sdc with partition sdc1. The
second and third HDD are the Volume Group called "Video_Vol".

I am not certain of what nor how to get the VG "seen". Any pointers
would be appreciated. If I am posting to the wrong list, please,
let me know and I will move on.

*****************************************************************

[root at mythtv /]# pvscan
   PV /dev/sdc1   VG Video_Vol   lvm2 [279.44 GB / 279.44 GB free]
   PV /dev/sdb1   VG Video_Vol   lvm2 [279.44 GB / 279.44 GB free]
   Total: 2 [558.88 GB] / in use: 2 [558.88 GB] / in no VG: 0 [0   ]

*****************************************************************

[root at mythtv /]# lvscan
[root at mythtv /]#

*****************************************************************

[root at mythtv /]# vgscan
   Reading all physical volumes.  This may take a while...
   Found volume group "Video_Vol" using metadata type lvm2

*****************************************************************

[root at mythtv ~]# fdisk -l

Disk /dev/sda: 300.0 GB, 300090728448 bytes
255 heads, 63 sectors/track, 36483 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

    Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          13      104391   83  Linux
/dev/sda2              14        3640    29133877+  83  Linux
/dev/sda3            3641       36199   261530167+  83  Linux
/dev/sda4           36200       36483     2281230    5  Extended
/dev/sda5           36200       36483     2281198+  82  Linux swap / Solaris

Disk /dev/sdb: 300.0 GB, 300069052416 bytes
255 heads, 63 sectors/track, 36481 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

    Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *           1       36481   293033601   8e  Linux LVM

Disk /dev/sdc: 300.0 GB, 300069052416 bytes
255 heads, 63 sectors/track, 36481 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

    Device Boot      Start         End      Blocks   Id  System
/dev/sdc1   *           1       36481   293033601   8e  Linux LVM

*****************************************************************

[root at mythtv ~]# pvdisplay
File descriptor 11 left open
File descriptor 12 left open
File descriptor 13 left open
   --- Physical volume ---
   PV Name               /dev/sdc1
   VG Name               Video_Vol
   PV Size               279.44 GB / not usable 0
   Allocatable           yes
   PE Size (KByte)       32768
   Total PE              8942
   Free PE               8942
   Allocated PE          0
   PV UUID               lEOegI-s050-LvBk-GA8O-aEg5-NCuO-COnWbA

   --- Physical volume ---
   PV Name               /dev/sdb1
   VG Name               Video_Vol
   PV Size               279.44 GB / not usable 0
   Allocatable           yes
   PE Size (KByte)       32768
   Total PE              8942
   Free PE               8942
   Allocated PE          0
   PV UUID               fCzDu6-rlCp-dKyG-0Kh5-VtuP-sdiL-wwAJl7

*****************************************************************

[root at mythtv /]# lvdisplay -vv
       Setting global/locking_type to 1
       Setting global/locking_dir to /var/lock/lvm
       File-based locking enabled.
     Finding all logical volumes
       /dev/ramdisk: No label detected
       /dev/ram: No label detected
       /dev/sda1: No label detected
       /dev/ram2: No label detected
       /dev/root: No label detected
       /dev/ram3: No label detected
       /dev/sda3: No label detected
       /dev/ram4: No label detected
       /dev/ram5: No label detected
       /dev/sda5: No label detected
       /dev/ram6: No label detected
       /dev/ram7: No label detected
       /dev/ram8: No label detected
       /dev/ram9: No label detected
       /dev/ram10: No label detected
       /dev/ram11: No label detected
       /dev/ram12: No label detected
       /dev/ram13: No label detected
       /dev/ram14: No label detected
       /dev/ram15: No label detected
       /dev/sdb1: lvm2 label detected
       /dev/sdc1: lvm2 label detected
       Locking /var/lock/lvm/V_Video_Vol RB
       /dev/sdb1: lvm2 label detected
       /dev/sdc1: lvm2 label detected
       /dev/sdc1: lvm2 label detected
       /dev/sdb1: lvm2 label detected
       /dev/sdc1: lvm2 label detected
       /dev/sdb1: lvm2 label detected
       Unlocking /var/lock/lvm/V_Video_Vol

*****************************************************************

[root at mythtv ~]# vgdisplay
File descriptor 11 left open
File descriptor 12 left open
File descriptor 13 left open
   --- Volume group ---
   VG Name               Video_Vol
   System ID
   Format                lvm2
   Metadata Areas        2
   Metadata Sequence No  1
   VG Access             read/write
   VG Status             resizable
   MAX LV                0
   Cur LV                0
   Open LV               0
   Max PV                0
   Cur PV                2
   Act PV                2
   VG Size               558.88 GB
   PE Size               32.00 MB
   Total PE              17884
   Alloc PE / Size       0 / 0
   Free  PE / Size       17884 / 558.88 GB
   VG UUID               szYlX8-rtrD-tqG8-eLXU-GGHQ-9wr4-LgxRku

*****************************************************************

[root at mythtv ~]# vgchange -a y
File descriptor 11 left open
File descriptor 12 left open
File descriptor 13 left open
   0 logical volume(s) in volume group "Video_Vol" now active
[root at mythtv ~]# vgdisplay
File descriptor 11 left open
File descriptor 12 left open
File descriptor 13 left open
   --- Volume group ---
   VG Name               Video_Vol
   System ID
   Format                lvm2
   Metadata Areas        2
   Metadata Sequence No  1
   VG Access             read/write
   VG Status             resizable
   MAX LV                0
   Cur LV                0
   Open LV               0
   Max PV                0
   Cur PV                2
   Act PV                2
   VG Size               558.88 GB
   PE Size               32.00 MB
   Total PE              17884
   Alloc PE / Size       0 / 0
   Free  PE / Size       17884 / 558.88 GB
   VG UUID               szYlX8-rtrD-tqG8-eLXU-GGHQ-9wr4-LgxRku

*****************************************************************

[root at mythtv ~]# vgchange -a y Video_Vol
File descriptor 11 left open
File descriptor 12 left open
File descriptor 13 left open
   0 logical volume(s) in volume group "Video_Vol" now active
[root at mythtv ~]#

*****************************************************************



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