Convoy backup create, gives error "Error response from server, Failed to execute: convoy-pdata_tools [

Convoy
1

devicemapper as the storage driver. Create a volume group vg001 and logical volume mythinpool.
The creating snapshot snap1 command went through fine.

[~]# convoy backup create snap1 --dest s3:///
ERRO[0000] Error response from server, Failed to execute: convoy-pdata_tools [thin_delta --snap1 2 --snap2 2 /dev/mapper/vg001-mythinpool], output bad checksum in superblock
Usage: thin_delta [options]
Options:
{–thin1, --snap1}
{–thin2, --snap2}
{-m, --metadata-snap} [block#]
{–verbose}
{-h|–help}
{-V|–version}
, error exit status 1

{
“Error”: “Error response from server, Failed to execute: convoy-pdata_tools [thin_delta --snap1 2 --snap2 2 /dev/mapper/vg001-mythinpool], output bad checksum in superblock\nUsage: thin_delta [options] \u003cdevice or file\u003e\nOptions:\n {–thin1, --snap1}\n {–thin2, --snap2}\n {-m, --metadata-snap} [block#]\n {–verbose}\n {-h|–help}\n {-V|–version}\n, error exit status 1\n”
}
[~]# convoy info
{
“General”: {
“Root”: “/var/lib/convoy”,
“DriverList”: [
“devicemapper”
],
“DefaultDriver”: “devicemapper”,
“MountNamespaceFD”: “”,
“IgnoreDockerDelete”: false
},
“devicemapper”: {
“DataDevice”: “/dev/mapper/vg001-mythinpool”,
“DefaultVolumeSize”: “107374182400”,
“Driver”: “devicemapper”,
“MetadataDevice”: “/dev/mapper/vg001-mythinpool”,
“Root”: “/var/lib/convoy/devicemapper”,
“ThinpoolBlockSize”: “2097152”,
“ThinpoolDevice”: “/dev/mapper/convoy-pool”,
“ThinpoolSize”: “64424509440”
}
}
[ ~]# convoy list
{
“39b63b05-7eb2-4921-81bc-390d4047bfde”: {
“UUID”: “39b63b05-7eb2-4921-81bc-390d4047bfde”,
“Name”: “clusterfs”,
“Driver”: “devicemapper”,
“MountPoint”: “”,
“CreatedTime”: “Mon Apr 11 15:34:05 -0500 2016”,
“DriverInfo”: {
“DevID”: “1”,
“Device”: “/dev/mapper/39b63b05-7eb2-4921-81bc-390d4047bfde”,
“Driver”: “devicemapper”,
“MountPoint”: “”,
“Size”: “107374182400”
},
“Snapshots”: {
“7f0f537c-6863-4404-8ebc-c6a81e929694”: {
“UUID”: “7f0f537c-6863-4404-8ebc-c6a81e929694”,
“Name”: “snap1”,
“CreatedTime”: “Mon Apr 11 17:06:37 -0500 2016”,
“DriverInfo”: {
“DevID”: “2”,
“Driver”: “devicemapper”,
“Size”: “107374182400”,
“UUID”: “7f0f537c-6863-4404-8ebc-c6a81e929694”,
“VolumeUUID”: “39b63b05-7eb2-4921-81bc-390d4047bfde”
}
}
}
}
}