Backup failed with exit code -312 after yum update.
CentOS 5.x / 6.x
Red Hat Enterprise Linux 5.x / 6.x
That is because the driver file will remain removed when the snapshot driver related file is updated by yum update.
1) Execute the following command to get the driver's path.
# modinfo dattobd | grep filename
2) Execute the following command on the path you got in 1) to load the driver.
# insmod /lib/modules/<kernel Version>/extra/dattobd.ko
3) If the driver name is returned with the following command, it is loaded correctly.
# lsmod | grep dattobd
- ActiveImage Protector 2018 Linux