backup client v2.1.5 armv7 block device image backup failed with "Error: blkgetsize64"

[tonypang1228]

I have compiled the armv7 backup client from the source code at github. It works great for file backup but failed for block device image mode:

root@odroid:~# proxmox-backup-client.sh backup odroid.img:/dev/mmcblk1 --verbose
Error: blkgetsize64 failed for "/dev/mmcblk1" - EINVAL: Invalid argument

root@odroid:# cat /etc/*-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=18.04
DISTRIB_CODENAME=bionic
DISTRIB_DESCRIPTION="Ubuntu 18.04.6 LTS"
NAME="Ubuntu"
VERSION="18.04.6 LTS (Bionic Beaver)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 18.04.6 LTS"
VERSION_ID="18.04"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=bionic
UBUNTU_CODENAME=bionic
root@odroid:# uname -a
Linux odroid 4.14.180-178 #1 SMP PREEMPT Wed Sep 2 12:39:45 -03 2020 armv7l armv7l armv7l GNU/Linux

[ayufan]

I have compiled the armv7 backup client from the source code at github. It works great for file backup but failed for block device image mode:

Sorry, but this is not very well supported. I only tested this backuping files, and I still continue to use older release.