Storage Rescan message with Offhost Proxy Backups

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Storage Rescan message with Offhost Proxy Backups

Veeam Logoby collinp » Fri Apr 12, 2013 4:47 am

I am getting the following error when backing up quite few vm's using an offhost proxy and using hardware vss providers. Veeam case#00196840

"Unable to perform offhost backup for HypervHostXXX because storage rescan did not complete for this host yet"

It seems to happen to all 4 hosts in the cluster at different times. It happens regardless if I manually rescan under "Manage Volumes" for each host or not. I noticed it happens more often when 2 Veeam jobs are running at once. My question is, can 2 VM's in 2 different jobs use the same Offhost Proxy at the same time?
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Re: Storage Rescan message with Offhost Proxy Backups

Veeam Logoby foggy » Fri Apr 12, 2013 11:47 am

Collin, yes, you can backup two VMs in different jobs at the same time using the same offhost proxy, no issues with that.

Please continue investigating the rescan problem with our technical support guys. I'm pretty sure they will be able to reveal the reason from the debug logs.
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Re: Storage Rescan message with Offhost Proxy Backups

Veeam Logoby buddyfarr » Thu Jan 09, 2014 6:35 pm

I am getting the same error:

"Unable to perform offhost backup for HOSTNAME because storage rescan did not complete for this host yet"

any updates to this?

thanks,

Buddy Farr
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Re: Storage Rescan message with Offhost Proxy Backups

Veeam Logoby Gostev » Thu Jan 09, 2014 7:51 pm

This topic is from v6 times. What version and patch level are you using?
Have you reviewed the rescan session log for errors?
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Re: Storage Rescan message with Offhost Proxy Backups

Veeam Logoby marieelieg » Fri Aug 04, 2017 6:01 am

Hello dears,

I have the same issue (Unable to perform off-host backup for <hyper-v host name> because storage rescan did not complete for this host yet).
Kindly note that this VM was moved to another volume that is mapped to the same Hyper-V host.

We have Veeam v9.5 installed. The job is a replication job.
We tried doing a Rescan of the Hyper-V Host (Right click the host > Rescan), same warning in the replication job.
We tried re-adding the Hyper-V Host (Right click the host > Properties > Next (following the wizard) > ... > Finish), same warning in the replication job.
We tried removing the VM from the replication job > saving the job > then re-adding the VM to the job again > saving the job, same warning in the replication job.
We then tried to create a new replication job containing this VM, same warning in the replication job.

The job is giving the above warning however, it is re-assigning backup infrastructure resources and continuing with replication. So the replication is succeeding but still generates this warning. Also when it is re-assigning backup infrastructure resources, it is assigning the same Hyper-V Host as backup proxy (as detailed in the image found using this link: https://we.tl/m5kfmFwMec).

Any ideas?
Thank you in advance :D
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Re: Storage Rescan message with Offhost Proxy Backups

Veeam Logoby foggy » Fri Aug 04, 2017 4:11 pm

It is expected that the job uses on-host proxy (which is running on Hyper-V host itself) when it is unable to use the off-host one. Anyway, please contact support for a closer look at the described behavior.
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Re: Storage Rescan message with Offhost Proxy Backups

Veeam Logoby marieelieg » Tue Aug 08, 2017 6:43 am

Yes exactly, but I don't know why it sees this host as an off-host proxy, tries to do replication through it and fails, and then fails over to the onhost proxy (which is this same host) and succeeding the replication.

We did apply update 2 to our existing Veeam 9.5, after that this behavior started to occur for 1 VM (for its backup job and replication job).

Anyway I am opening a case now.

Will keep you guys posted with the results.

Thanks!
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