I've Googled until my fingers ache. For some reason, I can't seem to grow my LV after adding an additional (identical) disk to my VG.

I think I've successfully added my fourth disk into the array. Every disk is the same WD 10TB drive (formats down to 9.1TB). My original array is 3 disks. So currently I have 18.2TB of available space. The disks are /dev/sdc, /dev/sdd, /dev/sde and I am adding /dev/sdf.

When I do a vgdisplay, the result us as follows:

--- Volume group --- VG Name data System ID Format lvm2 Metadata Areas 4 Metadata Sequence No 30 VG Access read/write VG Status resizable MAX LV 0 Cur LV 1 Open LV 1 Max PV 0 Cur PV 4 Act PV 4 VG Size 36.38 TiB PE Size 4.00 MiB Total PE 9537532 Alloc PE / Size 7153149 / <27.29 TiB Free PE / Size 2384383 / <9.10 TiB VG UUID 4eex8c-TZo3-P7N0-pp8m-jQ9c-uTf2-lZe1XN

The way I read this is that the number of LV's is 1 (which is correct), and the number of PV's is 4 (also correct). As I read this, the total VG size is 36.4TB or 4 x 9.1TB (also correct), and the available PE is ~27.3 TB (also correct).

But this is where everything falls down ...

I did a

lvextend -l +100%FREE /dev/data/data

and

lvextend --extents +100%FREE /dev/data/data

Both commands returns the following:

 Using stripesize of last segment 64.00 KiB Size of logical volume data/data unchanged from 18.19 TiB (4768764 extents). Logical volume data/data successfully resized.

and when I do a

resize2fs /dev/data/data

it returns

resize2fs 1.45.5 (07-Jan-2020)
The filesystem is already 4883214336 (4k) blocks long. Nothing to do!

When I do a

df -h

I get

/dev/mapper/data-data 19T 15T 2.7T 85% /mnt/sdc

Finally, a

lsblk

gives:

sdc 8:32 0 9.1T 0 disk
├─data-data_rmeta_2 253:6 0 4M 0 lvm
│ └─data-data 253:8 0 18.2T 0 lvm /mnt/sdc
└─data-data_rimage_2 253:7 0 9.1T 0 lvm └─data-data 253:8 0 18.2T 0 lvm /mnt/sdc
sdd 8:48 0 9.1T 0 disk
├─data-data_rmeta_1 253:4 0 4M 0 lvm
│ └─data-data 253:8 0 18.2T 0 lvm /mnt/sdc
└─data-data_rimage_1 253:5 0 9.1T 0 lvm └─data-data 253:8 0 18.2T 0 lvm /mnt/sdc
sde 8:64 0 9.1T 0 disk
├─data-data_rmeta_0 253:2 0 4M 0 lvm
│ └─data-data 253:8 0 18.2T 0 lvm /mnt/sdc
└─data-data_rimage_0 253:3 0 9.1T 0 lvm └─data-data 253:8 0 18.2T 0 lvm /mnt/sdc
sdf 8:80 0 9.1T 0 disk

So I'm stumped. Can anyone help me please? I'm quickly running out of space.

Thanks a lot in advance!!

b

3

1 Answer

I had a similar problem, manged to resolve it by changing the allocation policy (mine was set to contiguous instead of the default normal)

lvextend /dev/UPLOADS/data /dev/sdd1 --alloc normal

2

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