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pirx
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Error: NFC storage connection is unavailable

Post by pirx » Jan 30, 2019 3:40 pm

Hi,

(Case 03389599)

I've a fresh Veeam 9.5 U4 test setup (no license) with one W2K16 VM running all Veeam components. I've added a NetApp CIFS Shares as backup repository which I can access from Veeam VM, creating files and rescannig of Repo is workig too. If I start a VeeamZIP backup of a VM it always fails with:

Code: Select all

30.01.2019 12:49:28 :: Error: NFC storage connection is unavailable. Storage: [stg:datastore-11,nfchost:host-17,conn:192.168.0.20]. Storage display name: [vsan-x00-edgemgmt].
Failed to create NFC download stream. NFC path: [nfc://conn:192.168.0.20,nfchost:host-17,stg:datastore-11@aa8f495c-eeab-5467-802b-48df371c7cd0/x00-jumphost-linux.vmx].
The VM is stored on a 4 node cluster vSAN datastore, but I get the same error backing up a VM on a standalone server with local raid'ed storage. 192.168.0.20 is my vCenter, vCenter and ESXi host are all running latest 6.5U2 version. Veeam settings a more or less defaults. I've found some threads about this error message, but I've problems finding the root of the problem. From Netapp I can resolve the ESXi server names.

HannesK
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Re: Error: NFC storage connection is unavailable

Post by HannesK » Jan 31, 2019 7:19 am

Hello,
I have seen it very often and from my customer experience it was always a firewall / networking / (split)DNS issue https://www.veeam.com/kb1198

The backup server cannot connect to the ESX hosts or VCenter.

Best regards,
Hannes

pirx
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Re: Error: NFC storage connection is unavailable

Post by pirx » Jan 31, 2019 8:26 am

The setup is currently very simple, only one Veeam B&R VM.

vCenter Login is working:
[30.01.2019 16:50:40] < 4788> vim| [SOAP] Successfully logged in ( server: [192.168.0.20], user: [Administrator@vsphere.local], sessionKey: [525a3156-1789-6f95-bb44-5ca496d945d6] )
But DNS lookup of ESXi host seems to be broken.
[30.01.2019 16:50:40] < 4788> nfc| Connecting to NFC session. Target host: [x00-esxem-til-024.dhc-dev.internal]. Storage: [vsan-x00-edgemgmt]. VI SOAP connection ID: [192.168.0.20].
[30.01.2019 16:50:40] < 4788> nfc| NFC service: [vpxa-nfc]. Port: [902].
[30.01.2019 16:50:40] < 4788> nfc| Opening NFC session with the specified ticket [52 f0 b7 c2 95 a8 b2 df-89 e9 90 6a eb 6d 9c a9]...
[30.01.2019 16:50:40] < 4788> nfc| Establishing connection with the host [x00-esxem-til-024.dhc-dev.internal]. Port: [902].
[30.01.2019 16:50:40] < 4788> nfc| Resolving host name (x00-esxem-til-024.dhc-dev.internal) to IP address...
[30.01.2019 16:50:52] < 4788> nfc| Resolving host name (x00-esxem-til-024.dhc-dev.internal) to IP address... Failed.
[30.01.2019 16:50:52] < 4788> nfc| Establishing connection with the host [x00-esxem-til-024.dhc-dev.internal]. Port: [902]. Failed.
[30.01.2019 16:50:52] < 4788> nfc| Opening NFC session with the specified ticket [52 f0 b7 c2 95 a8 b2 df-89 e9 90 6a eb 6d 9c a9]... Failed.
[30.01.2019 16:50:52] < 4788> nfc| Connecting to NFC session. Target host: [x00-esxem-til-024.dhc-dev.internal]. Storage: [vsan-x00-edgemgmt]. VI SOAP connection ID: [192.168.0.20]. Failed.
[30.01.2019 16:50:52] < 4788> ERR |Failed to initiate NFC session. Target host: [x00-esxem-til-024.dhc-dev.internal]. VI connection ID: [192.168.0.20]. Storage MOID: [vsan-x00-edgemgmt].

But nslookup for the host from the Veema VM is working:
nslookup.exe x00-esxem-til-024.dhc-dev.internal
Server: x00-pfsense.dhc-dev.internal
Address: 192.168.0.10

Name: x00-esxem-til-024.dhc-dev.internal
Address: 192.168.1.14
Same from vC:
# nslookup x00-esxem-til-024.dhc-dev.internal.
Server: 127.0.0.1
Address: 127.0.0.1#53

Name: x00-esxem-til-024.dhc-dev.internal
Address: 192.168.1.14
And from NetApp:
vserver services name-service getxxbyyy getaddrinfo -node cluster-prodit-01 -vserver svm1 -hostname x00-esxem-til-024.dhc-dev.internal
Host name: x00-esxem-til-024.dhc-dev.internal
Canonical Name: x00-esxem-til-024.dhc-dev.internal
IPv4: 192.168.1.14

So where is this DNS lookup performed?

pirx
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Re: Error: NFC storage connection is unavailable

Post by pirx » Jan 31, 2019 9:09 am 1 person likes this post

Problem solved. DNS lookup on cli was working but the Veeam VM is multihomed and the interface with the private IP had the wrong DNS server setting...

HannesK
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Re: Error: NFC storage connection is unavailable

Post by HannesK » Jan 31, 2019 9:55 am

thanks, good to hear

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