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    • Panic after syncmirror plex failure - PANIC MSG = Process mgwd unresponsive
      https://kb.netapp.com/Cloud/Cloud_Volumes_ONTAP/Panic_after_syncmirror_plex_failure_PANIC_MSG_Process_mgwd_unresponsive
      Applies to Cloud Volumes ONTAP (CVO) Amazon Web Services (AWS) Issue MGWD panic after losing access to several disks PANIC MSG = Process mgwd unresponsive for 839 seconds (mgwd startup: "(4341)") in p...Applies to Cloud Volumes ONTAP (CVO) Amazon Web Services (AWS) Issue MGWD panic after losing access to several disks PANIC MSG = Process mgwd unresponsive for 839 seconds (mgwd startup: "(4341)") in process nodewatchdog on release 9.8P1 (C)
    • PANIC: prod/common/wafl/bplus.c:3639: Assertion failure. in SK process wafl_exempt
      https://kb.netapp.com/on-prem/ontap/Ontap_OS/OS-KBs/PANIC__prod_common_wafl_bplus_c_3639__Assertion_failure_in_SK_process_wafl_exempt
      Applies to ONTAP 9.2 and higher Issue Filer repeatedly panics with "PANIC: prod/common/wafl/bplus.c:3639:"
    • Unexpected reboot with reason REBOOT_VKI_CE_PANIC
      https://kb.netapp.com/on-prem/E-Series/Hardware-KBs/Unexpected_controller_on_NetApp_E-Series_28xx__Controller_version_11.50.2
      Applies to NetApp E-Series Issue AutoSupport case gets opened with the following message: E-Series Notification from <hostname> (Core dump has been captured) INFO
    • PANIC  : protection fault on VA 0 code 0 cs:rip 0x20:0xffffffff8ae1d6d4
      https://kb.netapp.com/on-prem/ontap/Ontap_OS/OS-KBs/PANIC___protection_fault_on_VA_0_code_0_cs_rip_0x20_0xffffffff8ae1d6d4
      Applies to ONTAP 9 Issue System panic with panic string: PANIC : protection fault on VA 0 code 0 cs:rip 0x20:0xffffffff8ae1d6d4 version: 9.7P8: Thu Oct 15 00:14:25 EDT 2020 Panic String: page fault (s...Applies to ONTAP 9 Issue System panic with panic string: PANIC : protection fault on VA 0 code 0 cs:rip 0x20:0xffffffff8ae1d6d4 version: 9.7P8: Thu Oct 15 00:14:25 EDT 2020 Panic String: page fault (supervisor read data, page not present) on VA 0x22813f223c cs:rip 0x20:0xffffffff8095f8c4 rflags 0x10206 in SK process raidio_thread on release 9.11.1P8 (C)
    • ONTAP select serving LUNs may panic when high amount of data is written to datastore
      https://kb.netapp.com/on-prem/ontap/ontap-select/Select-KBs/ONTAP_select_serving_LUNs_may_panic_when_high_amount_of_data_is_written_to_datastore
      Applies to ONTAP Select vSAN VMware Issue When a high amount of writes occur (on datastore VMFS-6) which causes VMDK to grow, the operation hangs up and ONTAP is rebooted with the following panic mess...Applies to ONTAP Select vSAN VMware Issue When a high amount of writes occur (on datastore VMFS-6) which causes VMDK to grow, the operation hangs up and ONTAP is rebooted with the following panic message: WAFL hung for <volname>. in SK process wafl_exempt01 on release 9.x (C) Normally a core dump will be generated which can be uploaded to a new or existing NetApp case to match it to this particular issue.
    • Disk missing on CVO causing system to panic
      https://kb.netapp.com/Cloud/Cloud_Volumes_ONTAP/Disk_missing_on_CVO_causing_system_to_panic
      [Cluster-01: config_thread: sk.panic:alert]: Panic String: aggr aggr04: raid volfsm, fatal disk error in RAID group with no parity disk.. Raid type - raid0 Group name plex0/rg0 state NORMAL. [Cluster-...[Cluster-01: config_thread: sk.panic:alert]: Panic String: aggr aggr04: raid volfsm, fatal disk error in RAID group with no parity disk.. Raid type - raid0 Group name plex0/rg0 state NORMAL. [Cluster-01: config_thread: sk.panic:alert]: params: {'reason': 'aggr aggr04: raid volfsm, fatal disk error in RAID group with no parity disk.. Raid type - raid0 Group name plex0/rg0 state NORMAL. On Azure it may result in panic if disks (page blobs in case of Azure HA root/data aggregate) are not reachable.
    • Node goes down when attempting to perform takeover
      https://kb.netapp.com/on-prem/ontap/Ontap_OS/OS-KBs/Node_goes_down_when_attempting_to_perform_takeover
      When shutting down a node, the HA partner panics when trying to perform takeover PANIC: Failover Monitor: unable to transit - takeover process is hung (wafl) in SK process cf_main on release 8.3 (C) o...When shutting down a node, the HA partner panics when trying to perform takeover PANIC: Failover Monitor: unable to transit - takeover process is hung (wafl) in SK process cf_main on release 8.3 (C) on Mon Sep 21 16:22:12 CEST 2020 [Node1: cf_main: cf.fm.givebackForced:alert]: Failover monitor: forcing reboot to clear state [Node1: cf_main: cf.fm.panicToInProgress:alert]: Failover monitor: Panic during takeover; takeover will be disabled on reboot.
    • Latency and disk utilization increases such as ONTAP shutdown
      https://kb.netapp.com/on-prem/ontap/Perf/Perf-KBs/Latency_and_disk_utilization_increases_such_as_ONTAP_shutdown
      Sun Jul 26 09:41:41 -0500 [clus1-02: ec_exempt_worker_thread: extCache.aggregate.invalidate:info]: WAFL external cache: Completed invalidation for aggregate in map slot 4 in 3 seconds. Sun Jul 26 09:4...Sun Jul 26 09:41:41 -0500 [clus1-02: ec_exempt_worker_thread: extCache.aggregate.invalidate:info]: WAFL external cache: Completed invalidation for aggregate in map slot 4 in 3 seconds. Sun Jul 26 09:41:41 -0500 [clus1-02: ec_exempt_worker_thread: extCache.aggregate.invalidate:info]: WAFL external cache: Completed invalidation for aggregate in map slot 3 in 3 seconds.
    • Panic due to prod/common/wafl/cleaner/wabe/wabe_bkt.c:xxxx assertion failure
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/Panic_due_to_prod_common_wafl_cleaner_wabe_wabe_bkt_c_xxxx_assertion_failure
      Applies to ONTAP 9.4P2 Issue One node of HA-Pair panic with panic string: PANIC: prod/common/wafl/cleaner/wabe/wabe_bkt.c:5879: Assertion failure. in SK process mpcleaner_thread2 on release 9.4P2 (C) ...Applies to ONTAP 9.4P2 Issue One node of HA-Pair panic with panic string: PANIC: prod/common/wafl/cleaner/wabe/wabe_bkt.c:5879: Assertion failure. in SK process mpcleaner_thread2 on release 9.4P2 (C) on Fri Feb 24 05:30:52 2023
    • E-Series controller panic due to cacheRecover - addToCache
      https://kb.netapp.com/on-prem/E-Series/SANtricity-OS-KBs/E-Series_controller_panic_due_to_cacheRecover_-_addToCache
      Applies to NetApp StorageGRID NetApp E-Series Systems SANtricity OS 11.70.5P1 Issue E-Series controller in lockdown state with 7-segment code: OE LF dr E-Series controller reboots with panic string: P...Applies to NetApp StorageGRID NetApp E-Series Systems SANtricity OS 11.70.5P1 Issue E-Series controller in lockdown state with 7-segment code: OE LF dr E-Series controller reboots with panic string: PANIC: cacheRecover - addToCache(1658ab600) returned 1657b3980 Alternate controller will be inaccessible and/or boot-loop while the affected controller is in the system
    • Controller disruption and data inconsistencies might occur during certain write operations: Active IQ Wellness
      https://kb.netapp.com/on-prem/ontap/Ontap_OS/OS-KBs/Controller_disruption_and_data_inconsistencies_might_occur_during_certain_write_operations__Active_IQ_Wellness
      If a FAS system is not serving as a snapmirror destination for an AFF system volume, then that FAS system is not exposed to this issue. In ONTAP releases 9.8 through 9.11.1, data might get written in ...If a FAS system is not serving as a snapmirror destination for an AFF system volume, then that FAS system is not exposed to this issue. In ONTAP releases 9.8 through 9.11.1, data might get written in an unsupported format when one or more of the following operations are performed for a volume whose destination aggregate has auto-adaptive-compression-savings set to false but runs as enabled (true) during any of the following write operations: