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My problem is very similar to Trouble resizing LVM volume after expanding Areca 1220 RAID 5 array; however, my 2 LVs are created on a unpartitioned raid volume:

# pvdisplay
--- Physical volume ---
  PV Name               /dev/sdc
  VG Name               vg01
  PV Size               15.46 TiB / not usable 2.25 MiB
  Allocatable           yes (but full)
  PE Size               4.00 MiB
  Total PE              4053115
  Free PE               0
  Allocated PE          4053115
  PV UUID               Fhznif-hQeK-1jrG-q0w8-JCvV-79nB-LwyGfx

# lvdisplay
  --- Logical volume ---
  LV Name                /dev/vg01/REPO
  VG Name                vg01
  LV UUID                2ieM0T-Vwht-igEM-cDft-vdt5-TgMd-1nEGZt
  LV Write Access        read/write
  LV Status              available
  # open                 1
  LV Size                5.00 TiB
  Current LE             1310720
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:0

  --- Logical volume ---
  LV Name                /dev/vg01/backup
  VG Name                vg01
  LV UUID                NTQDQy-XtbI-8AGT-fWkw-ddLh-QDFw-nJpeNI
  LV Write Access        read/write
  LV Status              available
  # open                 1
  LV Size                10.46 TiB
  Current LE             2742395
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:1

# vgdisplay
  --- Volume group ---
  VG Name               vg01
  System ID             
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  3
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                2
  Open LV               2
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               15.46 TiB
  PE Size               4.00 MiB
  Total PE              4053115
  Alloc PE / Size       4053115 / 15.46 TiB
  Free  PE / Size       0 / 0   
  VG UUID               OIoHRD-HfxH-a1Ys-md93-mrRs-zVFJ-8rdMuL

The Areca cli reports the expanded array (was 17000GB):

# ./cli64 vsf info
  # Name             Raid Name       Level   Capacity Ch/Id/Lun  State         
===============================================================================
  1 ARC-1280-VOL#00  Raid Set # 00   Raid6   19000.0GB 00/00/00   Normal
===============================================================================

The drive is used for online backups; I have disaster recovery tapes but will lose all versions (about 10TB) that are not dumped to tape if I repartition and restore.

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1  
Are you running a 32bit kernel? There is a mention that there is a 16TB maximum for LVM on 32 bit systems. tldp.org/HOWTO/LVM-HOWTO/lvm2faq.html#AEN407 –  Zoredache May 2 '13 at 19:26
1  
It seems I am a bit confused: What is the problem you want help for? –  Hauke Laging May 2 '13 at 22:12
    
- I do have a 64 bit kernel. The help I am hoping for is that there is something I can do to have the OS (OpenSuse 11.3 -- yes I know it is old!) recognize the additional disk space so I can use it. –  Richard May 3 '13 at 12:51
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