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I wanted to double the disk size of the VM
In VMWare I've expanded the HD from 20 to 40 GB.
In TKL apparently I did something different from the instructions here: https://www.turnkeylinux.org/blog/extending-lvm
When running:
root@QuesMail ~# cfdisk -L /dev/sda
Instead of creating sda3, I've expanded sda1 from 20G to 40G.
sda1 is now 40 GB.
Any idea how I can use the full 40G of sda1?
PV is 40 GB, but it isnt recognized as such. Therefore I can't expand the VG, and so on.
Here is the info I've got:
root@QuesMail ~# fdisk -l
Disk /dev/sda: 40 GiB, 42949672960 bytes, 83886080 sectors
Disk model: Virtual disk
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: 0x06b75928
Device Boot Start End Sectors Size Id Type
/dev/sda1 * 123046 83885028 83761983 40G 8e Linux LVM
Disk /dev/mapper/turnkey-root: 17 GiB, 18253611008 bytes, 35651584 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/mapper/turnkey-swap_1: 512 MiB, 536870912 bytes, 1048576 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
root@QuesMail ~# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
fd0 2:0 1 4K 0 disk
sda 8:0 0 40G 0 disk
`-sda1 8:1 0 40G 0 part
|-turnkey-root 254:0 0 17G 0 lvm /
`-turnkey-swap_1 254:1 0 512M 0 lvm [SWAP]
sr0 11:0 1 1024M 0 rom
root@QuesMail ~# vgdisplay
--- Volume group ---
VG Name turnkey
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 <18.57 GiB
PE Size 4.00 MiB
Total PE 4753
Alloc PE / Size 4480 / 17.50 GiB
Free PE / Size 273 / <1.07 GiB
VG UUID 3RRmMS-NlHO-iLFu-Q04W-Q3dS-otr9-jfrdCr
root@QuesMail ~# pvdisplay
--- Physical volume ---
PV Name /dev/sda1
VG Name turnkey
PV Size <18.57 GiB / not usable <1.41 MiB
Allocatable yes
PE Size 4.00 MiB
Total PE 4753
Free PE 273
Allocated PE 4480
PV UUID pqgVaP-UQcj-6Owx-AXFF-MInK-MKTT-kDRQux
root@QuesMail ~# lvextend -L +20G /dev/turnkey/root
Insufficient free space: 5120 extents needed, but only 273 available
root@QuesMail ~# file -s /dev/sda*
/dev/sda: DOS/MBR boot sector
/dev/sda1: LVM2 PV (Linux Logical Volume Manager), UUID: pqgVaP-UQcj-6Owx-AXFF-MInK-MKTT-kDRQux, size: 19937000960
Still have some steps to do! :)
Whilst what you've done so far probably isn't the quickest and easiest way to go, but it's not wrong per se. It's just incomplete. Essentially you've successfully increased the size of the (virtual) physical disk and you've added the extra disk space to the relevant partition.
But now you need to resize the PV. Once that's done, then the VG should automatically see the additional space. Then you can extend the LV and the filesystem itself. The step you appear to be missing is the resizing of the PV.
So to get LVM to see the bigger PV, try this:
Now check that you can see the additional space in your PV and VG. FWIW, in this instance I recommend the 'pvs' and 'vgs' commands, rather than 'pvdisplay' and 'vgdisplay' commands respectively. The shorter commands display less info, but in a more compact way and they will provide the specific info we need, so probably easier to read in this context. Regardless, use whichever command you prefer to confirm that both your PV and VG are now "seeing" the full 40G (or thereabouts).
Assuming that you can now see the additional space, if you wish to use all of the free space available in your VG (i.e. you are not using LVM snapshots etc), then you can just extend it to use 100% like this:
If you wish to leave 10% of the VG free (e.g. if you are using or intend to use LVM snapshots or something else...) then you can use "+90%FREE" instead. Alternatively, you can add the desired size, as per what you tried already (i.e. 'lvextend -L +20G /dev/turnkey/root').
Once that's done, double check that the LV has been increased using either 'lvs' or 'lvdisplay'. Assuming it has, then extend the filesystem:
Then double check that the new space is now visable to the OS:
You should now have ~40GB! :)
Worked perfectly!
Perfect! 40 GB available!
Thanks!
Udo
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