Failed to create volume snapshot on CentOS

[davide.depaoli]

Hello,
I've just downloaded veeam agent, installed centOS on a vsphere vm, installed all os dependencies and finally started veeam agent.
As veeam repository have added a new local disk and mounted as a standard filesystem.
Have configure veeam as Volume level backup, excluding a filesystem acting as repository.
The job fails with:
"failed to create volume snapshot"
"child execution has failed. Exit code: 1"

I'm not a linux guru, and I don't know how to solve the problem.
Thank you
Davide

[nielsengelen]

How did you format the new repository? Is this an ext4 disk?

[davide.depaoli]

Yes, it is ext4 formatted, using following command: "/sbin/mkfs.ext4 -L /backup /dev/sdb1"

[davide.depaoli]

Extracted from job logfile

Code: Select all

Adding LVM volume group object into snapshot set. Volume group: [centos].
[11.07.2016 10:45:26] <140116363777792> lpbcore|       Device: [253:0].
[11.07.2016 10:45:26] <140116363777792> lpbcore|       Device: [253:1].
[11.07.2016 10:45:28] <140116363777792> lpbcore| WARN|Method invocation was not finalized. Method id [0]. Class: [N10lpbcorelib11interaction17IResourcesServiceE]
[11.07.2016 10:45:28] <140116363777792> lpbcore| ERR |Child execution has failed. Exit code: [1].
[11.07.2016 10:45:28] <140116363777792> lpbcore| >>  |--tr:Failed to execute [modprobe].
[11.07.2016 10:45:28] <140116363777792> lpbcore| >>  |Failed to load module [veeamsnap] with parameters [deferiocache=0 debuglogging=0].
[11.07.2016 10:45:28] <140116363777792> lpbcore| >>  |--tr:Unable to create snapshot for session [{9dbdf1e3-ae44-4b64-9d42-b591205ca6d8}].
[11.07.2016 10:45:28] <140116363777792> lpbcore| >>  |--tr:Failed to execute method [0] for class [N10lpbcorelib11interaction9proxystub21CResourcesServiceStubE].
[11.07.2016 10:45:28] <140116363777792> lpbcore| >>  |--tr:Failed to invoke method [0] in class [N10lpbcorelib11interaction17IResourcesServiceE].
[11.07.2016 10:45:28] <140116363777792> lpbcore| >>  |An exception was thrown from thread [1645680384].
[11.07.2016 10:45:28] <140116363777792> lpbcore|   BackupJobPerformer: Taking snapshot. Failed.
[11.07.2016 10:45:28] <140116363777792> lpbcore|   BackupJobPerformer: Releasing snapshot.
[11.07.2016 10:45:28] <140116363777792> lpbcore|   BackupJobPerformer: Releasing snapshot. ok.
[11.07.2016 10:45:28] <140116363777792> lpbcore| BackupJobPerformer: Creating backup. Failed.

[PTide]

Hi,

Child execution has failed. Exit code: [1]

Please run rpm -qa | grep veeamsnap. If the output says veeamsnap-1.0.0.499-1.noarch then please check if the versions of kernel and kernel-headers match - run uname -r and compare the version from the output with the verison in the output of rpm -qa | grep kernel-headers

[davide.depaoli]

My outputs:

rpm -qa | grep veeamsnap
veeamsnap-1.0.0.499-1.noarch

uname -r
3.10.0-327.22.2.el7.x86_64

rpm -qa | grep kernel-headers
kernel-headers-3.10.0-327.22.2.el7.x86_64

thank you

[PTide]

Kindly reinstall both packages (veeam and veeamsnap) and try to start backup again. If the same error persists then please upload the /var/log/veeam directory to some fileshare so we can review the logs. Please also include the output of lsblk -af and dmesg -T in the archive.

Thank you

[davide.depaoli]

Hi,
I have reinstalled whole vm from scratch installing all dependecies (some trouble to find dkms for CentOS).
Now the agent is working.

Thank you
Davide

[PTide]

Now the agent is working.

Good! dkms is not available in any of the official CentOS repositories, so if you use yum packet manager for installation and want it to install dkms automatically then please use some third-party repository that contains dkms package (epel for example).

Thanks

[davide.depaoli]

If this may be useful to other users. I have found dkms here:

http://goo.gl/7PABQ3 (rpm.pbone.net)

[romsl77]

Hi,

Child execution has failed. Exit code: [1]
Please run rpm -qa | grep veeamsnap. If the output says veeamsnap-1.0.0.499-1.noarch then please check if the versions of kernel and kernel-headers match - run uname -r and compare the version from the output with the verison in the output of rpm -qa | grep kernel-headers

Hello,

I also have problems doing backups with the veeam endpoint backup for linux.
I also have centos and my output to those commands is:

Code: Select all

[root@SRV-WEB-02 veeam]# rpm -qa | grep veeamsnap
veeamsnap-1.0.0.499-1.noarch
[root@SRV-WEB-02 veeam]# uname -r
3.10.0-327.18.2.el7.x86_64
[root@SRV-WEB-02 veeam]# rpm -qa | grep kernel-headers
kernel-headers-3.10.0-327.22.2.el7.x86_64

so what should i do now?

thanks for your help

[nielsengelen]

Please post the log snippet with the error you are receiving.

[PTide]

Hi,

Apparently kernel and kernel-headers versions do not match:

][root@SRV-WEB-02 veeam]# uname -r
3.10.0-327.18.2.el7.x86_64
[root@SRV-WEB-02 veeam]# rpm -qa | grep kernel-headers
kernel-headers-3.10.0-327.22.2.el7.x86_64

Those numbers should match each other.

Thanks.