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Frequent Volume not on preferred path alerts on NetApp E-Series

  1. Last updated
    Jan 20, 2025
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Category:
e-series-systems
Specialty:
esg
Last Updated:
1/20/2025, 6:57:01 AM

Applies to

  • NetApp E-Series
  • iSCSI host connections
  • Windows host

Issue

  • Controller reporting very frequent Volume not on preferred path and resolving
  • Major event log:
A:2/26/24, 9:46:05 AM (09:46:05) 77317 210a Controller cache not enabled or was internally disabled - Shelf 99, Bay A - Event: Cache Reconfigure Sync-8
A:2/26/24, 9:46:05 AM (09:46:05) 77316 212c Write-back caching fully restored - Shelf 99, Bay A
A:2/26/24, 9:46:04 AM (09:46:04) 77315 210a Controller cache not enabled or was internally disabled - Shelf 99, Bay A - Event: Cache Reconfigure Sync-5
B:2/26/24, 9:46:05 AM (09:46:05) 77314 2044 IO shipping implicit volume transfer - Volume MTBK110_CommvaultMP4
----> Shipped/Owned IOs: 184/12, Host ID: 12
B:2/26/24, 9:46:05 AM (09:46:05) 77313 210a Controller cache not enabled or was internally disabled - Shelf 99, Bay B - Event: Give Volume Ownership-8
B:2/26/24, 9:46:04 AM (09:46:04) 77312 2044 IO shipping implicit volume transfer - Volume MTBK110_CommvaultMP1
----> Shipped/Owned IOs: 158/1, Host ID: 12
B:2/26/24, 9:46:04 AM (09:46:04) 77311 212c Write-back caching fully restored - Shelf 99, Bay B
B:2/26/24, 9:46:04 AM (09:46:04) 77310 210a Controller cache not enabled or was internally disabled - Shelf 99, Bay B - Event: Give Volume Ownership-5
A:2/26/24, 7:49:32 AM (07:49:32) 77309 9104 Analysis of workload balance was performed - None
B:2/26/24, 7:44:24 AM (07:44:24) 77308 2049 Fail-back implicit volume transfer - Volume MTBK110_CommvaultMP4
B:2/26/24, 7:44:24 AM (07:44:24) 77307 2049 Fail-back implicit volume transfer - Volume MTBK110_CommvaultMP2
B:2/26/24, 7:44:24 AM (07:44:24) 77305 212c Write-back caching fully restored - Shelf 99, Bay B
B:2/26/24, 7:44:23 AM (07:44:23) 77304 210a Controller cache not enabled or was internally disabled - Shelf 99, Bay B - Event: Take Volume Ownership-6
A:2/26/24, 7:44:24 AM (07:44:24) 77301 210a Controller cache not enabled or was internally disabled - Shelf 99, Bay A - Event: Cache Reconfigure Sync-6
A:2/26/24, 7:39:53 AM (07:39:53) 77300 212c Write-back caching fully restored - Shelf 99, Bay A
A:2/26/24, 7:39:53 AM (07:39:53) 77299 210a Controller cache not enabled or was internally disabled - Shelf 99, Bay A - Event: Cache Reconfigure Sync-5
B:2/26/24, 7:40:22 AM (07:40:22) 77298 4011 Volume not on preferred path due to AVT/RDAC failover - Shelf 99, Bay B <--CRITICAL
B:2/26/24, 7:39:53 AM (07:39:53) 77297 2049 Fail-back implicit volume transfer - Volume MTBK110_CommvaultMP1
B:2/26/24, 7:39:53 AM (07:39:53) 77296 212c Write-back caching fully restored - Shelf 99, Bay B
B:2/26/24, 7:39:52 AM (07:39:52) 77295 210a Controller cache not enabled or was internally disabled - Shelf 99, Bay B - Event: Take Volume Ownership-5
A:2/26/24, 7:38:22 AM (07:38:22) 77294 212c Write-back caching fully restored - Shelf 99, Bay A
A:2/26/24, 7:38:21 AM (07:38:21) 77293 210a Controller cache not enabled or was internally disabled - Shelf 99, Bay A - Event: Cache Reconfigure Sync-8
B:2/26/24, 7:38:22 AM (07:38:22) 77292 2044 IO shipping implicit volume transfer - Volume MTBK110_CommvaultMP4
----> Shipped/Owned IOs: 1399/0, Host ID: 12
B:2/26/24, 7:38:22 AM (07:38:22) 77291 212c Write-back caching fully restored - Shelf 99, Bay B
B:2/26/24, 7:38:21 AM (07:38:21) 77290 210a Controller cache not enabled or was internally disabled - Shelf 99, Bay B - Event: Give Volume Ownership-8
A:2/26/24, 7:36:18 AM (07:36:18) 77289 2024 Media scan (scrub) resumed - Volume MTBK110_CommvaultMP2
A:2/26/24, 7:36:18 AM (07:36:18) 77288 212c Write-back caching fully restored - Shelf 99, Bay A
A:2/26/24, 7:36:17 AM (07:36:17) 77287 210a Controller cache not enabled or was internally disabled - Shelf 99, Bay A - Event: Cache Reconfigure Sync-6
B:2/26/24, 7:36:18 AM (07:36:18) 77286 2044 IO shipping implicit volume transfer - Volume MTBK110_CommvaultMP2
----> Shipped/Owned IOs: 1433/0, Host ID: 12

Initiator iSCSI name:  iqn.1991-05.com.microsoft:xxx.xxx.xxxxx.xxx.xx  (host MTBK110)

   Sessions/Connections to Controller A:

      192.168.xxx.xx ->  192.168.xxx.xx
      192.168.xxx.xx ->  192.168.xxx.xx
      192.168.xxx.xx ->  192.168.xxx.xx
      192.168.xxx.xx ->  192.168.xxx.xx
      192.168.xxx.xx ->  192.168.xxx.xx

   Sessions/Connections to Controller B:

      192.168.xxx.xx ->  192.168.xxx.xx
      192.168.xxx.xx ->  192.168.xxx.xx
      192.168.xxx.xx ->  192.168.xxx.xx

 

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