We have several Dl360 G6's in the field. They had 2x 146G disks in a raid 1. After LVM, this shows up as a 136G volume (7% loss to filesystem).
This was carved into 100M /boot, and the remainder an LVM PV. The volgroup contained 2 logical volumes, one 54G dedicated to swap (yes, it's a lot, yes, it's by design), and 81G dedicated to /.
As of today we added 2x 300G disks in a raid 1. This shows up in the OS, and after being added to LVM it shows as 279G (7% loss to filesystem). This showed up as /dev/cciss/c0d1.
I ran these commands -
Make new array an LVM volume -
pvcreate /dev/cciss/c0d1
Add the volume to the existing volume group -
vgextend VolGroup00 /dev/cciss/c0d1
Extend the root partition logical volume to use 100% of the new space -
lvextend -l 100%FREE /dev/VolGroup00/LogVol01
Resize the volume -
resize2fs -p /dev/VolGroup00/LogVol01
The problem is, we seem to be missing a lot of space. About 90G to be exact. The output of vgdisplay shows about 82G of physical extents free (Free PE / Size 2642 / 82.56 GB), as if it ignored that I had included 100%FREE.
Am I misreading something here? Did I do something incorrectly? Any help would be appreciated. I'm wondering if the possibility of losing space to LVM formatting, and then losing space a second time to the ext3 filesystem on top of that causes a "double" loss of usable space. But that doesn't seem to explain what I see in pvdisplay and vgdisplay.
Here are dumps of the LVM commands on the host:
[root@bass01 ~]# pvs
PV VG Fmt Attr PSize PFree
/dev/cciss/c0d0p2 VolGroup00 lvm2 a- 136.59G 0
/dev/cciss/c0d1 VolGroup00 lvm2 a- 279.34G 82.56G
[root@bass01 ~]# lvs
LV VG Attr LSize Origin Snap% Move Log Copy% Convert
LogVol00 VolGroup00 -wi-ao 54.00G
LogVol01 VolGroup00 -wi-ao 279.38G
[root@bass01 ~]# vgs
VG #PV #LV #SN Attr VSize VFree
VolGroup00 2 2 0 wz--n- 415.94G 82.56G
[root@bass01 ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol01
271G 18G 240G 7% /
/dev/cciss/c0d0p1 97M 19M 73M 21% /boot
tmpfs 36G 0 36G 0% /dev/shm
[root@bass01 ~]# free -g
total used free shared buffers cached
Mem: 70 12 58 0 9 0
-/+ buffers/cache: 1 68
Swap: 53 0 53
[root@bass01 ~]# pvdisplay
--- Physical volume ---
PV Name /dev/cciss/c0d0p2
VG Name VolGroup00
PV Size 136.60 GB / not usable 7.45 MB
Allocatable yes (but full)
PE Size (KByte) 32768
Total PE 4371
Free PE 0
Allocated PE 4371
PV UUID nh7cgk-3pr7-gZst-Pz6o-PAWt-X1wZ-GH4TmI
--- Physical volume ---
PV Name /dev/cciss/c0d1
VG Name VolGroup00
PV Size 279.37 GB / not usable 22.29 MB
Allocatable yes
PE Size (KByte) 32768
Total PE 8939
Free PE 2642
Allocated PE 6297
PV UUID tHEAfR-HsNd-jNUT-mOwj-Ettb-N76X-fXIf0Q
[root@bass01 ~]# vgdisplay
--- Volume group ---
VG Name VolGroup00
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 5
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 2
Max PV 0
Cur PV 2
Act PV 2
VG Size 415.94 GB
PE Size 32.00 MB
Total PE 13310
Alloc PE / Size 10668 / 333.38 GB
Free PE / Size 2642 / 82.56 GB
VG UUID dcPGvL-SUCl-l99e-pQJN-e6sA-xEKZ-Q5ZT1G
[root@bass01 ~]# lvdisplay
--- Logical volume ---
LV Name /dev/VolGroup00/LogVol01
VG Name VolGroup00
LV UUID p7of6A-poAR-1iXs-Tgpq-lJRh-qae3-VNxBTO
LV Write Access read/write
LV Status available
# open 1
LV Size 279.38 GB
Current LE 8940
Segments 3
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:0
--- Logical volume ---
LV Name /dev/VolGroup00/LogVol00
VG Name VolGroup00
LV UUID X4iAo4-kKd8-ZZvJ-vfqq-fdMo-HaEM-YIsGE7
LV Write Access read/write
LV Status available
# open 1
LV Size 54.00 GB
Current LE 1728
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:1
