I'm a newbie to linux and partitioning and apologies in advance if this has been answered before; I've searched extensively on the web for answer, and after being unsuccessful I decided to post a question. With that out of the way, here is the problem description:
Running Ubuntu server 14.10 bare metal on a server with hardware raid which was configured in the BIOS. During installation I went with the default partitioning which ended up allocating most of the space to /root. First thing I did was to resize root partition, moving the /swap to be adjacent to /root, shrink the pv and vg successfully thanks to couple of posts here on the site. Now I'm not able to find way to use the new freed space as a new partition. Here are the details
~# fdisk --list
Disk /dev/sda: 1.6 TiB, 1796997120000 bytes, 3509760000 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x0f179d27
Device Boot Start End Sectors Size Id Type
/dev/sda1 * 2048 499711 497664 243M 83 Linux
/dev/sda2 501758 3509757951 3509256194 1.6T 5 Extended
/dev/sda5 501760 3509757951 3509256192 1.6T 8e Linux LVM
Disk /dev/mapper/bce--os--cpy--vg-root: 10 GiB, 10737418240 bytes, 20971520 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/sdd: 7.5 GiB, 8004304896 bytes, 15633408 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x00000000
Device Boot Start End Sectors Size Id Type
/dev/sdd1 * 2 15633407 15633406 7.5G c W95 FAT32 (LBA)
Disk /dev/mapper/bce--os--cpy--vg-swap_1: 64 GiB, 68719476736 bytes, 134217728 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
When using GParted it shows that sda5 is a subset of sda2, which lead me to believe that sda2 here is my RAID. Gparted was only helpful to visualize the disk, other than that I couldn't utilize it and my understanding is that it doesn't support LVM. Also, I couldn't use system-config-lvm package because it's deprecated as I understand it.
here is the vgdisplay, pvdisplay, and lvdisplay details
~# vgdisplay
--- Volume group ---
VG Name bce-os-cpy-vg
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 7
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 75.00 GiB
PE Size 4.00 MiB
Total PE 19199
Alloc PE / Size 18944 / 74.00 GiB
Free PE / Size 255 / 1020.00 MiB
VG UUID dO1C4A-WdnE-KdSf-U1Cs-9iOP-fg4P-KwSGFd
~# pvdisplay -m
--- Physical volume ---
PV Name /dev/sda5
VG Name bce-os-cpy-vg
PV Size 75.00 GiB / not usable 3.00 MiB
Allocatable yes
PE Size 4.00 MiB
Total PE 19199
Free PE 255
Allocated PE 18944
PV UUID SNkWK0-tkXG-Akza-qoDs-BcT3-3MEk-L53L0B
--- Physical Segments ---
Physical extent 0 to 2559:
Logical volume /dev/bce-os-cpy-vg/root
Logical extents 0 to 2559
Physical extent 2560 to 18943:
Logical volume /dev/bce-os-cpy-vg/swap_1
Logical extents 0 to 16383
Physical extent 18944 to 19198:
FREE
~# lvdisplay -m
--- Logical volume ---
LV Path /dev/bce-os-cpy-vg/root
LV Name root
VG Name bce-os-cpy-vg
LV UUID 8u1Eqf-6FPF-DXzh-vBds-cUyq-c1Fm-ewuhxk
LV Write Access read/write
LV Creation host, time bce-os-cpy, 2015-03-10 23:13:58 -0400
LV Status available
# open 1
LV Size 10.00 GiB
Current LE 2560
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 252:0
--- Segments ---
Logical extent 0 to 2559:
Type linear
Physical volume /dev/sda5
Physical extents 0 to 2559
--- Logical volume ---
LV Path /dev/bce-os-cpy-vg/swap_1
LV Name swap_1
VG Name bce-os-cpy-vg
LV UUID H7wmEp-Aw90-aWV1-aGrd-2yMr-ZBkH-sS1Zty
LV Write Access read/write
LV Creation host, time debian, 2015-03-23 18:38:31 -0400
LV Status available
# open 2
LV Size 64.00 GiB
Current LE 16384
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 252:1
--- Segments ---
Logical extent 0 to 16383:
Type linear
Physical volume /dev/sda5
Physical extents 2560 to 18943
This is vgs,pvs,and lvs output
~# vgs
VG #PV #LV #SN Attr VSize VFree
bce-os-cpy-vg 1 2 0 wz--n- 75.00g 1020.00m
root@bce-os-cpu:~# pvs
PV VG Fmt Attr PSize PFree
/dev/sda5 bce-os-cpy-vg lvm2 a-- 75.00g 1020.00m
root@bce-os-cpu:~# lvs
LV VG Attr LSize Pool Origin Data% Move Log Copy% Convert
root bce-os-cpy-vg -wi-ao--- 10.00g
swap_1 bce-os-cpy-vg -wi-ao--- 64.00g
fstab
~# cat /etc/fstab
#
/dev/mapper/bce--os--cpy--vg-root / ext4 errors=remount-ro 0 1
# /boot was on /dev/sda1 during installation
UUID=e24ff838-71c8-42b1-a381-d89c6daf3be1 /boot ext2 defaults 0 2
/dev/mapper/bce--os--cpy--vg-swap_1 none swap sw 0 0
So as you can see the disk size is 1.6T as shown in the fdisk output and after successfully (I think) shrinking vg,pv, and lv I have only used 75G and I want to use the freed space (how to find it?) to create a new partition.
sda is your hardware raid. sda5 is a subset of sda2 because sda2 is your extended partition, and sda5 is a logical partition. If you want to free up space for a new partition, you just need to shrink sda5 using gparted from a livecd.
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