2011-10-18 02:09 PM
We are experiencing some problems when using SnapProtect with vfilers.
We are trying to backup a NFS ESX Datastore which is served through a vfiler. SnapProtect creates the required snapshots on primary storage fine. On a second step, SnapProtect talks to DFM to archive that snapshot to secondary storage, but the operation fails, probably because SnapProtect treats de vfiler as a physical FAS although there are some operations that cannot be performed against the vfiler.
Do we have any official statement about what is supported/unsupported with SnapProtect and vfilers?
2011-10-20 10:27 AM
Note that SnapVault and SnapDiff – both components used by SnapProtect – currently have limited support for vFilers. At present, SnapDiff API does not support vFilers; SnapVault does not support vFiler as a backup destination.
Both limitations will be addressed in RR.1.
DPG Product Mgmt
2011-11-03 03:14 PM
Thanks for your anwsers.
I will try to be more specific.
I was talking about using a vfiler as the snapvault source. According to the documentation it's supported and should be working... but the truth is that we are finding problems to make it work. Has anyone tested this configuration?, are there any special considerations when dealing with vfilers?... we just added them to SnapProtect as any other physical array...
Here's a description of the problem we are experiencing:
When getting to do the secondary snapshot (snapvault), SnapProtect talks to the DFM and according to the DFM logs, it lists all the hosts using API host-list-info-iter-start, this list includes physical filers and virtual filers (vfilers). For each of these hosts SP tries to get a list of interfaces using the API netif-ip-interface-list-info, which uses a snmpwalk. The problem is that vfilers don't implement SNMP so the call to that API fails when trying to run the query against a vfiler. SP outputs an error similar to "DFM error: SNMP walk failed" and the secondary snap job fails.
That's why I am asking if we need to make any special configuration for vfilers or we can treat them just as standard arrays...
Is this an issue of SnapProtect not making the proper API calls to the DFM when dealing with vfilers as primary storage?
Thanks for your help!
2011-11-04 07:09 AM
Can you describe what systems you have defined in Array Management (in SnapProtect) as well as in Host Storage Systems in Protection Manager? I want to know where you have vfilers listed vs the physical host.
2011-11-04 08:33 AM
It seems I'm not authorized to upload any screenshots to the communities so I will try to explain it with omly text:
I have used ComCell Console > Control Panel > Array Management to configure physical systems, vfilers and DFM in SnapProtect:
So in the Array Management window I have IP address and login information for DFM, Physical System and Vfiler.
The following is the output from a "dfm hosts list". The one in bold and underlined is the vfiler that I'm trying to backup.
C:\Users\administrator.DEMONA>dfm hosts list
ID Type Host Name Host Address ProductId Deleted
---- ------------------------ ----------------------------------- ----------------------------------------- ------------ --------
83 Cluster cmode 10.68.49.211 No
84 Active/Active Controller curso15.DemoNA.NetAppU.com 10.68.49.215 0101185268 No
85 Active/Active Controller curso16.DemoNA.NetAppU.com 10.68.49.216 0101183380 No
82 Active/Active Controller curso8.demona.netappu.com 10.68.49.208 0101179731 No
78 Active/Active Controller fdemo2.demona.netappu.com 10.68.49.202 0101199156 No
74 Active/Active Controller fdemo3.demona.netappu.com 10.68.49.203 0101174433 No
79 Active/Active Controller fdemo6.demona.netappu.com 10.68.49.206 0101174445 No
81 Active/Active Controller fdemo7.demona.netappu.com 10.68.49.207 0101174090 No
77 Controller nas.demona.netappu.com 10.68.49.204 0135058274 No
809 Controller node0 10.68.49.210 0101184897 No
810 Controller node1 10.68.49.211 0101169894 No
811 Controller node2 10.68.49.212 0101180473 No
812 Controller node3 10.68.49.213 0101176781 No
75 Active/Active Controller test0.DemoNA.NetAppU.com 10.68.49.200 0118051550 No
76 Active/Active Controller test1.DemoNA.NetAppU.com 10.68.49.201 0118053016 No
80 Active/Active Controller urso9.demona.netappu.com 10.68.49.209 0101168852 No
971 vFiler vfiler1 10.68.49.199 No
1220 vFiler vfiler_test.demona.netappu.com 10.68.49.169 No
2688 vFiler vfilermariano 10.68.49.253 No
1456 vFiler vfNETAPP03 10.68.49.190 No
1448 vFiler vfNETAPP03.demona.netappu.com 10.68.49.190 No
880 vserver vs0 10.68.49.143 No
878 vserver vs1 No
879 vserver vsTEST No
877 vserver vsXEN No
I am not sure if this is the information you are requesting, please let me know if you need any additional info.
Thanks a lot for your help.