Hello All, This might be some basic mistake I would be doing with respect to different poolmetadata size. When I am trying to create thinpool with poolmetadatasize as 4m it fails but similar is successful when I try to create with 5m. Default poolmetadatasize can be 2m to 16g so I am not sure what is error I am enforcing it to fail. Kindly help me out with this issue. Case 1: poolmetadatasize as 4m #script to create thinpool with poolmetadatasize 4m [root@rahul ~]# cat temp pvcreate /dev/vdb pvcreate /dev/vdc pvcreate /dev/vdd pvcreate /dev/vde vgcreate snap_vg0 /dev/vdb /dev/vdc /dev/vdd /dev/vde lvcreate -L 90G --poolmetadatasize 4m -T /dev/snap_vg0/snap_thin_pool0 #lvcreate -L 90G -T /dev/snap_vg0/snap_thin_pool0 lvcreate -V90G -T /dev/snap_vg0/snap_thin_pool0 -n snap_thin_vol0 [root@rahul ~]# [root@rahul ~]# Case 2: poolmetadatasize as 5m #script to create thinpool with poolmetadatasize 5m [root@rahul ~]# cat temp pvcreate /dev/vdb pvcreate /dev/vdc pvcreate /dev/vdd pvcreate /dev/vde vgcreate snap_vg0 /dev/vdb /dev/vdc /dev/vdd /dev/vde lvcreate -L 90G --poolmetadatasize 5m -T /dev/snap_vg0/snap_thin_pool0 #lvcreate -L 90G -T /dev/snap_vg0/snap_thin_pool0 lvcreate -V90G -T /dev/snap_vg0/snap_thin_pool0 -n snap_thin_vol0 [root@rahul ~]# [root@rahul ~]# #Creation Success [root@rahul ~]# ./temp Physical volume "/dev/vdb" successfully created Physical volume "/dev/vdc" successfully created Physical volume "/dev/vdd" successfully created Physical volume "/dev/vde" successfully created Volume group "snap_vg0" successfully created Rounding up size to full physical extent 8.00 MiB Logical volume "lvol0" created Logical volume "snap_thin_pool0" created Logical volume "snap_thin_vol0" created [root@rahul ~]# Please find the attachment with detailed outputs of different lv commands Thanks, Rahul
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poolmetadatasize_5m
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poolmetadatasize_4m
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