Client:
Ubuntu 14.04
UrBackup Client Backend v2.0.33.0
Server:
Ubuntu 16.04
UrBackup Server v2.0.34.1611
My client performed a full backup initially. That finished properly, although I now see in the logs, errors such as:
Creating snapshot of “/www” failed
Snapshotting device /dev/vdd1 via dattobd…
Using /dev/datto1…
driver returned an error performing specified action. check dmesg for more info: Invalid argument
Creating snapshot of “www” failed.
Now my incremental backups are not working. I wonder if there was an issue with dattodb, which could now be resolved. However - I’m not entirely sure how to test dattodb?
An incremental backup fails and I now see the following:
Creating snapshot of “/run/resolvconf/resolv.conf” failed
Snapshotting device tmpfs via dattobd…
Using /dev/datto2…
driver returned an error performing specified action. check dmesg for more info: Invalid argument
Creating snapshot of “/run/network” failed
Snapshotting device tmpfs via dattobd…
Using /dev/datto2…
driver returned an error performing specified action. check dmesg for more info: Invalid argument
Client calculated hash of “/backup/urbackup/puzzle/160923-1720/www/.datto_a6397fb09ab7afc8109af40ee4c432ff7f487e450b640935” differs from server calculated hash. This may be caused by a bug or by random bit flips on the client or server hard disk. Failing backup. (Hash: tree-sparse, client hash: bO8lWFUvGmy3ODP2WC4EkYVjmUig04r7mTvTv4glfwjHpNVlAPFiA5nqieK3JgM0pK5TLX5GYVeB33scX9CQyw==, server hash: tEGgfk51wQ4NvKLJhKzljp810l6zRV4vlIKLv95uJKrcDlvG//4UkO1JRybKqCgAH/a7zhBuynowy8h7cwOLWg==)
Fatal error during backup. Backup not completed
FATAL: Backup failed because of disk problems (see previous messages)
Backup failed
dmesg shows:
[ 1915.969218] EXT4-fs (dm-0): mounted filesystem with ordered data mode. Opts: (null)
[ 1958.526375] EXT4-fs (dm-1): mounted filesystem with ordered data mode. Opts: (null)
[ 1959.190485] datto: illegal to perform setup while unmounted: -22
[ 1959.190523] datto: error during setup ioctl handler: -22
[ 1970.644520] datto: illegal to perform setup while unmounted: -22
[ 1970.644554] datto: error during setup ioctl handler: -22
Is this an issue with datto, or has something else gone wrong?