Sporadic error "The specified volume is offline" while getting snapshot list and volume list from NetApp

YEGOR_FADEEV — Thu, 05 Jun 2025 06:13:55 GMT

Hello!

I'm using NetApp simulator version "NetApp Release 8.1X47 7-Mode"

I need to monitor volumes as well as related snapshots and qtrees by using Data ONTAP APIs.

The general flow is

1) retrieve volume list;

2) iterate through each volume;

3) retrieve snapshot list for each volume;

4) retrieve qtree list for each volume;

Here I have a code snippet according to general flow

volume-list-info-iter-start

volume-list-info-iter-next

snapshot-list-info

....

qtree-list

...

When I poll NetApp with timeout in 3 minutes I get error "volume is offline" sometime regardless the fact that volume is online..

I enabled Audit logging in order to see what happen on server. I noticed that error log outputs some 'xml' after snapshot-list-info command (see below) when error is occured.

Wed Dec 12 16:03:48 PST [api_mpool_06:debug]: root@[#.#.10.156]:API:http in:<?xml version='1.0' encoding='UTF-8'?><!DOCTYPE netapp SYSTEM 'file:/etc/netapp_filer.dtd'><netapp xmlns="http://www.netapp.com/filer/admin" version="1.7" vfiler="vfiler8"><snapshot-list-info><target-name>test4_q_1</target-name><target-type>volume</target-type></snapshot-list-info></netapp>

Wed Dec 12 16:03:48 PST [api_mpool_06:debug]: NULL:API:in:API snapshot-list-info forwarded to vfiler vfiler8 for execution from filer vfiler0.

Wed Dec 12 16:03:48 PST [api_mpool_09:debug]: root@[#.#.10.156]:API:http in:<?xml version='1.0' encoding='UTF-8'?><!DOCTYPE netapp SYSTEM 'file:/etc/netapp_filer.dtd'><netapp xmlns="http://www.netapp.com/filer/admin" version="1.7" vfiler="vfiler8"><snapshot-list-info><target-name>test4_1</target-name><target-type>volume</target-type></snapshot-list-info></netapp>

Wed Dec 12 16:03:48 PST [api_mpool_09:debug]: NULL:API:in:API snapshot-list-info forwarded to vfiler vfiler8 for execution from filer vfiler0.

Wed Dec 12 16:03:56 PST [api_mpool_00:debug]: root@[#.#.32.165]:API:http in:<?xml version='1.0' encoding='utf-8' ?> <!DOCTYPE netapp SYSTEM 'file:/etc/netapp_filer.dtd'> <netapp version="1.0" xmlns="http://www.netapp.com/filer/admin"><perf-object-get-instances><objectname>aggregate</objectname><counters><counter>cp_read_blocks</counter><counter>cp_reads</counter><counter>total_transfers</counter><counter>user_read_blocks</counter><counter>user_reads</counter><counter>user_write_blocks</counter><counter>

Wed Dec 12 16:03:56 PST [api_mpool_08:debug]: root@[#.#.32.165]:API:http in:<?xml version='1.0' encoding='utf-8' ?> <!DOCTYPE netapp SYSTEM 'file:/etc/netapp_filer.dtd'> <netapp version="1.0" xmlns="http://www.netapp.com/filer/admin"><perf-object-get-instances><objectname>fcp</objectname><counters><counter>fcp_ops</counter><counter>fcp_read_data</counter><counter>fcp_read_ops</counter><counter>fcp_write_data</counter><counter>fcp_write_ops</counter><counter>fcp_read_latency</counter><counter>fcp_write_l

Wed Dec 12 16:03:56 PST [api_mpool_05:debug]: root@[#.#.32.165]:API:http in:<?xml version='1.0' encoding='utf-8' ?> <!DOCTYPE netapp SYSTEM 'file:/etc/netapp_filer.dtd'> <netapp version="1.0" xmlns="http://www.netapp.com/filer/admin"><perf-object-get-instances><objectname>nfsv3</objectname><counters><counter>nfsv3_avg_op_latency_base</counter><counter>nfsv3_avg_read_latency_base</counter><counter>nfsv3_avg_write_latency_base</counter><counter>nfsv3_ops</counter><counter>nfsv3_read_ops</counter><counter>

Could you explain me why does OnTAP server return error and what does mean log data from audit log ?

Regards,

Yegor...

topic Sporadic error "The specified volume <volume> is offline" while getting snapshot list and volume list from NetApp in ONTAP Discussions

Sporadic error "The specified volume is offline" while getting snapshot list and volume list from NetApp

Wed Dec 12 16:03:48 PST [api_mpool_06:debug]: NULL:API:in:API snapshot-list-info forwarded to vfiler vfiler8 for execution from filer vfiler0.

Wed Dec 12 16:03:48 PST [api_mpool_09:debug]: NULL:API:in:API snapshot-list-info forwarded to vfiler vfiler8 for execution from filer vfiler0.