vzdump 101 --mode snapshot --compress gzip --dumpdir /backups --mailto me@gmail.com
INFO: starting new backup job: vzdump 101 --dumpdir /backups --mailto me@gmail.com --mode snapshot --compress gzip
INFO: Starting Backup of VM 101 (openvz)
INFO: CTID 101 exist mounted running
INFO: status = running
INFO: backup mode: snapshot
INFO: ionice priority: 7
INFO: trying to remove stale snapshot '/dev/pve/vzsnap-ip-0'
INFO: umount: /mnt/vzsnap0: device is busy.
INFO: (In some cases useful info about processes that use
INFO: the device is found by lsof(8) or fuser(1))
ERROR: command 'umount /mnt/vzsnap0' failed: exit code 1
INFO: device-mapper: remove ioctl on failed: Device or resource busy
INFO: device-mapper: remove ioctl on failed: Device or resource busy
INFO: device-mapper: remove ioctl on failed: Device or resource busy
INFO: device-mapper: remove ioctl on failed: Device or resource busy
INFO: device-mapper: remove ioctl on failed: Device or resource busy
INFO: device-mapper: remove ioctl on failed: Device or resource busy
INFO: device-mapper: remove ioctl on failed: Device or resource busy
INFO: device-mapper: remove ioctl on failed: Device or resource busy
INFO: device-mapper: remove ioctl on failed: Device or resource busy
INFO: device-mapper: remove ioctl on failed: Device or resource busy
INFO: device-mapper: remove ioctl on failed: Device or resource busy
INFO: device-mapper: remove ioctl on failed: Device or resource busy
INFO: device-mapper: remove ioctl on failed: Device or resource busy
INFO: device-mapper: remove ioctl on failed: Device or resource busy
INFO: device-mapper: remove ioctl on failed: Device or resource busy
INFO: device-mapper: remove ioctl on failed: Device or resource busy
INFO: device-mapper: remove ioctl on failed: Device or resource busy
INFO: device-mapper: remove ioctl on failed: Device or resource busy
INFO: device-mapper: remove ioctl on failed: Device or resource busy
INFO: device-mapper: remove ioctl on failed: Device or resource busy
INFO: device-mapper: remove ioctl on failed: Device or resource busy
INFO: device-mapper: remove ioctl on failed: Device or resource busy
INFO: device-mapper: remove ioctl on failed: Device or resource busy
INFO: device-mapper: remove ioctl on failed: Device or resource busy
INFO: device-mapper: remove ioctl on failed: Device or resource busy
INFO: Unable to deactivate pve-vzsnap--ip--0 (253:1)
INFO: Unable to deactivate logical volume "vzsnap-ip-0"
ERROR: command 'lvremove -f /dev/pve/vzsnap-ip-0' failed: exit code 5
INFO: creating lvm snapshot of /dev/mapper/pve-lv1 ('/dev/pve/vzsnap-ks37765-0')
INFO: Logical volume "vzsnap-ip-0" already exists in volume group "pve"