I have the following setup:
An LVM volume group over 12 drives on a hardware RAID with one thinpool and one logical volume on a Red Hat Gluster Server. It looks as follows:
root@server:pts/1 - [17:33]
~ % pvs
PV VG Fmt Attr PSize PFree
/dev/sdb vg0 lvm2 a-- 36.38t 0
root@server:pts/1 - [17:34]
~ % vgs
VG #PV #LV #SN Attr VSize VFree
vg0 1 2 0 wz--n- 36.38t 0
root@server:pts/1 - [17:34]
~ % lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
gluster vg0 Vwi-aot--- 30.02t tp0 7.06
tp0 vg0 twi-aot--- 36.35t 5.83 0.36
And now the tricky part as with Googling I did not get any solution. I want to resize the LV "gluster" which is in a thinpool with the virtual size of 30 TB. I tried all the extend and resize functions and I did not see anything in the man pages of LVM. So maybe you know how to help here?
You can resize a thin pooled logical volume as follows to have it resized from 30TB to 35TB:
lvextend -L 35T vg0/gluster
This info was found in man lvmthin:
Manually manage free data space of thin pool LV
The available free space in a thin pool LV can be displayed with the lvs command. Free space can be added by extending the thin pool LV.
Command to extend thin pool data space:
lvextend -L Size VG/ThinPoolLV
Example
1. A thin pool LV is using 26.96% of its data blocks.
# lvs
LV VG Attr LSize Pool Origin Data%
pool0 vg twi-a-tz-- 10.00g 26.96
2. Double the amount of physical space in the thin pool LV.
# lvextend -L+10G vg/pool0
3. The percentage of used data blocks is half the previous value.
# lvs
LV VG Attr LSize Pool Origin Data%
pool0 vg twi-a-tz-- 20.00g 13.48
Other methods of increasing free data space in a thin pool LV include removing a thin LV and its related snapsots, or running fstrim on the file system using a thin LV.