Hello, I'm running oVirt with several data centers, some with NFS storage and some with local storage. I had problems in the past with a large pool and local storage. The problem was nodectl showed the pool being too full (I think >80%), but it was only the images that made the pool "full" -- and this storage was carefully setup such that there was no chance it would actually fill. The LVs for oVirt itself were all under 20%, yet nodectl still reported the pool was too full. My solution so far has been to use our RAID card tools, so that sda is the oVirt node install, and sdb is for images. There are probably other good reasons for me to handle it this way, for example being able to use different RAID levels, but I'm hoping someone can confirm my partitioning below doesn't have some risk I'm now yet aware of. I setup a new volume group for images, as below: [root@node4-g8-h4 multipath]# pvs PV VG Fmt Attr PSize PFree /dev/mapper/3600508b1001c7e172160824d7b204c3b2 onn_node4-g8-h4 lvm2 a-- <119.00g <22.85g /dev/sdb1 data lvm2 a-- 1.13t <361.30g [root@node4-g8-h4 multipath]# vgs VG #PV #LV #SN Attr VSize VFree data 1 1 0 wz--n- 1.13t <361.30g onn_node4-g8-h4 1 13 0 wz--n- <119.00g <22.85g [root@node4-g8-h4 multipath]# lvs LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert images_main data -wi-ao---- 800.00g home onn_node4-g8-h4 Vwi-aotz-- 1.00g pool00 4.79 ovirt-node-ng-4.2.5.1-0.20180816.0 onn_node4-g8-h4 Vwi---tz-k 64.10g pool00 root ovirt-node-ng-4.2.5.1-0.20180816.0+1 onn_node4-g8-h4 Vwi---tz-- 64.10g pool00 ovirt-node-ng-4.2.5.1-0.20180816.0 ovirt-node-ng-4.2.6-0.20180903.0 onn_node4-g8-h4 Vri---tz-k 64.10g pool00 ovirt-node-ng-4.2.6-0.20180903.0+1 onn_node4-g8-h4 Vwi-aotz-- 64.10g pool00 ovirt-node-ng-4.2.6-0.20180903.0 4.83 pool00 onn_node4-g8-h4 twi-aotz-- 91.10g 8.94 0.49 root onn_node4-g8-h4 Vwi---tz-- 64.10g pool00 swap onn_node4-g8-h4 -wi-ao---- 4.00g tmp onn_node4-g8-h4 Vwi-aotz-- 1.00g pool00 4.87 var onn_node4-g8-h4 Vwi-aotz-- 15.00g pool00 3.31 var_crash onn_node4-g8-h4 Vwi-aotz-- 10.00g pool00 2.86 var_log onn_node4-g8-h4 Vwi-aotz-- 8.00g pool00 3.57 var_log_audit onn_node4-g8-h4 Vwi-aotz-- 2.00g pool00 4.89 The images_main is setup as "Block device for filesystems" with ext4. Is there any reason I should consider pool for thinly provisioned volumes? I don't need to over-allocate storage and it seems to me like a fixed partition is ideal. Please confirm or let me know if there's anything else I should consider. Thanks Matt