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[linux-lvm] Expanded virtual disk for LVM: missing space? or free space? or no space?



Greetings gurus:

I do not deal with LVM on a daily basis, and I think my note-taking of previous LVM commands needs to be polished.

== Background ="">
Have a VM with 2 virtual disks, 30G (LVM only on 3rd partition) and 65G (all LVM) respectively.

A single VG on the server: VolGroup00; four LV's: LogVol00 to 03


== Problem ==
The 71G /usr/local (VolGroup00-LogVol02) hit 100%

I shut the server down and increased the 65G virtual disk up to 295G (+230G)  -- the thought process: take /usr/local from 71G to ~300G.

Booted into single and fdisk'ed a new /dev/sdb2

/dev/sda3            4298       30720    27057152   8e  Linux LVM
/dev/sdb1               1        8485    68155731   83  Linux
/dev/sdb2            8486       38509   241167780   83  Linux


Consulted my notes and did the following:

pvcreate /dev/sdb2
umount -vv /usr/local
vgextend VolGroup00 /dev/sdb2
lvextend -L 229.99G /dev/mapper/VolGroup00-LogVol02
e2fsck -f /dev/mapper/VolGroup00-LogVol02
resize2fs /dev/mapper/VolGroup00-LogVol02
mount -vv /usr/local
df -h

/dev/mapper/VolGroup00-LogVol02  227G   68G  148G  32% /usr/local

My confusion came in when I saw 227G total and not 300G.
My suspicion was confirmed with pvdisplay -s (and pvs)

  Device "/dev/sda3" has a capacity of 0
  Device "/dev/sdb1" has a capacity of 0
  Device "/dev/sdb2" has a capacity of 71.83 GiB

 But I am confused even further; I thought pvdisplay was referring to the physical disks, but fdisk does not show a missing 71G for /dev/sdb2

pvs
  PV         VG         Fmt  Attr PSize   PFree
  /dev/sda3  VolGroup00 lvm2 a--   25.80g     0
  /dev/sdb1  VolGroup00 lvm2 a--   65.00g     0
  /dev/sdb2  VolGroup00 lvm2 a--  229.99g 71.83g

vgs
  VG         #PV #LV #SN Attr   VSize   VFree
  VolGroup00   3   4   0 wz--n- 320.79g 71.83g


== Questions ==
Where did I go wrong, or did I go wrong?

It obviously seems like I am missing 71G, but am I missing it and how do I go about reclaiming it?


== Additional data ="">
pvdisplay
  --- Physical volume ---
  PV Name               /dev/sda3
  VG Name               VolGroup00
  PV Size               25.80 GiB / not usable 3.00 MiB
  Allocatable           yes (but full)
  PE Size               4.00 MiB
  Total PE              6605
  Free PE               0
  Allocated PE          6605

  --- Physical volume ---
  PV Name               /dev/sdb1
  VG Name               VolGroup00
  PV Size               65.00 GiB / not usable 2.33 MiB
  Allocatable           yes (but full)
  PE Size               4.00 MiB
  Total PE              16639
  Free PE               0
  Allocated PE          16639

  --- Physical volume ---
  PV Name               /dev/sdb2
  VG Name               VolGroup00
  PV Size               230.00 GiB / not usable 3.41 MiB
  Allocatable           yes
  PE Size               4.00 MiB
  Total PE              58878
  Free PE               18389
  Allocated PE          40489



vgdisplay -v
    Finding all volume groups
    Finding volume group "VolGroup00"
  --- Volume group ---
  VG Name               VolGroup00
  System ID
  Format                lvm2
  Metadata Areas        3
  Metadata Sequence No  9
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                4
  Open LV               4
  Max PV                0
  Cur PV                3
  Act PV                3
  VG Size               320.79 GiB
  PE Size               4.00 MiB
  Total PE              82122
  Alloc PE / Size       63733 / 248.96 GiB
  Free  PE / Size       18389 / 71.83 GiB

  --- Logical volume ---
  LV Path                /dev/VolGroup00/LogVol01
  LV Name                LogVol01
  VG Name                VolGroup00
  LV Write Access        read/write
  LV Creation host, time ,
  LV Status              available
  # open                 1
  LV Size                5.86 GiB
  Current LE             1500
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:1

  --- Logical volume ---
  LV Path                /dev/VolGroup00/LogVol00
  LV Name                LogVol00
  VG Name                VolGroup00
  LV Write Access        read/write
  LV Creation host, time ,
  LV Status              available
  # open                 1
  LV Size                7.32 GiB
  Current LE             1875
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:0

  --- Logical volume ---
  LV Path                /dev/VolGroup00/LogVol03
  LV Name                LogVol03
  VG Name                VolGroup00
  LV Write Access        read/write
  LV Creation host, time ,
  LV Status              available
  # open                 1
  LV Size                5.78 GiB
  Current LE             1480
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:2

  --- Logical volume ---
  LV Path                /dev/VolGroup00/LogVol02
  LV Name                LogVol02
  VG Name                VolGroup00
  LV Write Access        read/write
  LV Creation host, time ,
  LV Status              available
  # open                 1
  LV Size                229.99 GiB
  Current LE             58878
  Segments               3
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:3

  --- Physical volumes ---
  PV Name               /dev/sda3
  PV Status             allocatable
  Total PE / Free PE    6605 / 0

  PV Name               /dev/sdb1
  PV Status             allocatable
  Total PE / Free PE    16639 / 0

  PV Name               /dev/sdb2
  PV Status             allocatable
  Total PE / Free PE    58878 / 18389



lvdisplay -m
  --- Logical volume ---
  LV Path                /dev/VolGroup00/LogVol01
  LV Name                LogVol01
  VG Name                VolGroup00
  LV Write Access        read/write
  LV Creation host, time ,
  LV Status              available
  # open                 1
  LV Size                5.86 GiB
  Current LE             1500
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:1

  --- Segments ---
  Logical extent 0 to 1499:
    Type                linear
    Physical volume     /dev/sda3
    Physical extents    0 to 1499


  --- Logical volume ---
  LV Path                /dev/VolGroup00/LogVol00
  LV Name                LogVol00
  VG Name                VolGroup00
  LV Write Access        read/write
  LV Creation host, time ,
  LV Status              available
  # open                 1
  LV Size                7.32 GiB
  Current LE             1875
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:0

  --- Segments ---
  Logical extent 0 to 1874:
    Type                linear
    Physical volume     /dev/sda3
    Physical extents    1500 to 3374


  --- Logical volume ---
  LV Path                /dev/VolGroup00/LogVol03
  LV Name                LogVol03
  VG Name                VolGroup00
  LV Write Access        read/write
  LV Creation host, time ,
  LV Status              available
  # open                 1
  LV Size                5.78 GiB
  Current LE             1480
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:2

  --- Segments ---
  Logical extent 0 to 1479:
    Type                linear
    Physical volume     /dev/sda3
    Physical extents    3375 to 4854


  --- Logical volume ---
  LV Path                /dev/VolGroup00/LogVol02
  LV Name                LogVol02
  VG Name                VolGroup00
  LV Write Access        read/write
  LV Creation host, time ,
  LV Status              available
  # open                 1
  LV Size                229.99 GiB
  Current LE             58878
  Segments               3
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:3

  --- Segments ---
  Logical extent 0 to 1749:
    Type                linear
    Physical volume     /dev/sda3
    Physical extents    4855 to 6604

  Logical extent 1750 to 18388:
    Type                linear
    Physical volume     /dev/sdb1
    Physical extents    0 to 16638

  Logical extent 18389 to 58877:
    Type                linear
    Physical volume     /dev/sdb2
    Physical extents    0 to 40488


Many thanks in advance!
Ogal





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