| Suddenly Failing Backups [message #143895] |
Mon, 17 September 2018 02:45  |
El-Man
Messages: 11
Registered: October 2011
Location: New Zealand
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Hello, all.
A client's Kerio Connect server is suddenly failing to run its backup consistently. The Differentials work now and again, but there hasn't been a successful Full backup for a long time now. Here are the relevant bits from the logs:
Error Log:
[16/Sep/2018 16:10:04] backup.cpp: Cannot write file C:\Program Files\Kerio\MailServer\store/mail/<redacted>/#msgs/0000009e.eml (file size 13.40 MB) to backup ZIP file \\BoundaryNAS\Public\Keriobackup/F20180915T181003Z
[16/Sep/2018 16:10:06] backup.cpp: BACKUP: Backup failed in folder <redacted>, 3632865 MB (3632865 total) of 8501032 MB free on destination disk
Debug Log:
[16/Sep/2018 16:10:05][3448] Compression of message store backup finished. 231478 files were added to the archive \\BoundaryNAS\Public\Keriobackup/F20180915T181003Z in 46 volumes.
[16/Sep/2018 16:10:05][3448] {backup} Connection to folder \\BoundaryNAS\Public\Keriobackup is OK
[16/Sep/2018 16:10:06][3448] {backup} Estimate amount of folders were 3691 and amount of really visited folders is 2524.
As you can see, the backups happen to a NAS, which is connected on a gigabit network. You might think that this connection is unreliable, but Connect says it's okay, and there have been no other connection or disk errors. Nor is it running out of space, there's over 3.5Tb free. It just gets up to that stage saying compression is finished, then that the backup has failed, and deletes all the backup files it just wrote out.
Also, the folder it fails on is always different.
Any ideas?
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