extending logical volume in ubuntu
I have the following problem. I ' ve added a 20GB to my ubuntu machine (from 20 to 40gb). Now this is what i get from fdisk -l command :
Disk /dev/sda: 42.9 GB, 42949672960 bytes
255 heads, 63 sectors/track, 5221 cylinders, total 83886080 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 identifier: 0x000881a0
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 499711 248832 83 Linux
/dev/sda2 501758 41940991 20719617 5 Extended
/dev/sda5 501760 41940991 20719616 8e Linux LVM
Disk /dev/mapper/zabbix-root: 20.1 GB, 20124270592 bytes
255 heads, 63 sectors/track, 2446 cylinders, total 39305216 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 identifier: 0x00000000
Disk /dev/mapper/zabbix-root doesn't contain a valid partition table
Disk /dev/mapper/zabbix-swap_1: 1069 MB, 1069547520 bytes
255 heads, 63 sectors/track, 130 cylinders, total 2088960 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 identifier: 0x00000000
I tried to exteng it with this command :
lvextend -L+20G /dev/mapper/zabbix-root
and i got following
Extending logical volume root to 38.74 GiB
Insufficient free space: 5120 extents needed, but only 5 available
Can someone help with what to do to extend my root with 20gb more?
Thanks
UPDATE
Ok i made it up with cfdisk then pvcreate and vgextend , then with lvextend and now i can see 40gb in my volumegroup with vgdisplay command.
next question is. How to refresh also info for commands like df etc.? with df -h there is still only 19gb in here... ill send my outputs from lvdisplay,vgdisplay,fdisk -l, and df -h.
fdisk -l :
Disk /dev/sda: 42.9 GB, 42949672960 bytes
255 heads, 63 sectors/track, 5221 cylinders, total 83886080 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 identifier: 0x000881a0
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 499711 248832 83 Linux
/dev/sda2 501758 83886079 41692161 5 Extended
/dev/sda5 501760 41940991 20719616 8e Linux LVM
/dev/sda6 41941055 83886079 20972512+ 83 Linux
Disk /dev/mapper/zabbix-root: 41.6 GB, 41599107072 bytes
255 heads, 63 sectors/track, 5057 cylinders, total 81248256 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 identifier: 0x00000000
Disk /dev/mapper/zabbix-root doesn't contain a valid partition table
Disk /dev/mapper/zabbix-swap_1: 1069 MB, 1069547520 bytes
255 heads, 63 sectors/track, 130 cylinders, total 2088960 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 identifier: 0x00000000
Disk /dev/mapper/zabbix-swap_1 doesn't contain a valid partition table
df -h :
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/zabbix-root 19G 17G 791M 96% /
udev 489M 8.0K 489M 1% /dev
tmpfs 200M 280K 199M 1% /run
none 5.0M 0 5.0M 0% /run/lock
none 498M 0 498M 0% /run/shm
/dev/sda1 228M 25M 192M 12% /boot
vgdisplay :
--- Volume group ---
VG Name zabbix
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 39.76 GiB
PE Size 4.00 MiB
Total PE 10178
Alloc PE / Size 10173 / 39.74 GiB
Free PE / Size 5 / 20.00 MiB
VG UUID d4I8HJ-Rq2h-CPf1-LKFm-Bsam-3Mqe-9e39F3
lvdisplay :
--- Logical volume ---
LV Name /dev/zabbix/root
VG Name zabbix
LV UUID N4NqWB-P6Hr-L51A-q98I-oAE9-qmvu-wHjQxo
LV Write Access read/write
LV Status available
# open 1
LV Size 38.74 GiB
Current LE 9918
Segments 3
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 252:0
--- Logical volume ---
LV Name /dev/zabbix/swap_1
VG Name zabbix
LV UUID jDDTkD-VpZf-BXng-rQDI-HKSc-I8j2-mOY47c
LV Write Access read/write
LV Status available
# open 2
LV Size 1020.00 MiB
Current LE 255
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 252:1
pvdisplay :
--- Physical volume ---
PV Name /dev/sda5
VG Name zabbix
PV Size 19.76 GiB / not usable 2.00 MiB
Allocatable yes (but full)
PE Size 4.00 MiB
Total PE 5058
Free PE 0
Allocated PE 5058
PV UUID g2jnVt-dFQ6-takf-qz8L-QFf4-VAEQ-QYvp3u
--- Physical volume ---
PV Name /dev/sda6
VG Name zabbix
PV Size 20.00 GiB / not usable 992.50 KiB
Allocatable yes
PE Size 4.00 MiB
Total PE 5120
Free PE 5
Allocated PE 5115
PV UUID Il7KFu-rCa9-3sUE-0Hrz-qtyX-s8eL-eLpOGR
Answer
So i figured it out. At first i needed to enlarge my disk size in vmware enviroment. After that i needed to rescan my ubuntu server with something like :
echo "- - -" > /sys/class/scsi_host/host#/scan
where # i had to replace with numbers for every host in scsi_host. Then i was able to see added space in ubuntu with command :
fdisk -l
In next step i had to prepare or format that freespace with using this command :
cfdisk /dev/sda
-you can format it as u wish (also space) There is a new partition now. - in my case : /dev/sda6
Next step is to use pvcreate for new partition :
pvcreate /dev/sda6
after this is done simply add it to existing volume group using :
vgextend vg_name /dev/sda6
and now we can finally extend my logical volume using :
lvextend -L+20G /dev/zabbix/root
and if now check fdisk -l there is /zabbix-root with +20GB :) bud dont forget to use resize2fs to let filesystem know there is some change. If u will not do this u are not able to use new space.
resize2fs /dev/zabbix/root