dattodb snapshot failed to unmount

Description

We have a Linux server we are backing up (CentOS 6.9), utilizing the dattodb snapshotting method. Occasionally, the snapshots are unable to be unmounted.

UrBackup server: 2.1.19
UrBackup client: 2.1.15 (Binary)

datto on client:
dattobd-utils-0.9.16-11.1.el6.x86_64
dkms-dattobd-0.9.16-11.1.el6.noarch

Log file from server:

Level

Time

Message

Info

5/14/2017 1:03

Starting scheduled incremental file backup...

Info

5/14/2017 1:47

Snapshotting device /dev/mapper/vg_mailvol-storage via dattobd...

Info

5/14/2017 1:47

Using /dev/datto0...

Info

5/14/2017 1:47

Mounting /dev/mapper/wsnap-d7a88c825f621c8d2d6d4b2a4e179efc8a2aaf13c19668fc...

Info

5/14/2017 1:47

"Indexing of ""storage"" done. 108968 filesystem lookups 0 db lookups and 0 db updates"

Info

5/14/2017 1:47

mn-hc-lsurgemail-p1.honeycomb.net: Loading file list...

Info

5/14/2017 1:48

mn-hc-lsurgemail-p1.honeycomb.net: Calculating file tree differences...

Info

5/14/2017 1:49

mn-hc-lsurgemail-p1.honeycomb.net: Calculating tree difference size...

Info

5/14/2017 1:49

mn-hc-lsurgemail-p1.honeycomb.net: Linking unchanged and loading new files...

Info

5/14/2017 3:13

Waiting for file transfers...

Info

5/14/2017 3:13

"Removing snapshot on ""servername"" for path ""storage"" failed: FAILED"

Info

5/14/2017 3:13

Waiting for file hashing and copying threads...

Info

5/14/2017 3:13

Saving file metadata...

Info

5/14/2017 3:18

Writing new file list...

Info

5/14/2017 3:27

All metadata was present

Info

5/14/2017 3:35

Transferred 3.13975 GB - Average speed: 5.22968 MBit/s

\Info|5/14/2017 3:36|Time taken for backing up client servername: 2h 32m 51s|

Info

5/14/2017 3:36

Backup succeeded

From dmesg on client:

After this even, datto snapshotting of this volume no longer works until the server is rebooted.

Environment

None

Assignee

Martin Raiber

Reporter

Ryan Bethke

Labels

None

Priority

Minor
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