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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.
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.
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.
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:
ONTAP Select reports "spin lock (CCMA-Worker) too long. VM may have been paused"
https://kb.netapp.com/on-prem/ontap/ontap-select/Select-KBs/ONTAP_Select_reports_spin_lock_CCMA_Worker_too_long_VM_may_have_been_paused
Applies to NetApp ONTAP Select Issue ONTAP Select node reboots Following panic message is seen: spin lock (CCMA-Worker) too long. VM may have been paused. Check VM host logs for an error
E-Series controller encounters panic due to IOP layer timeout
https://kb.netapp.com/on-prem/E-Series/SANtricity-OS-KBs/E-Series_controller_encounters_panic_due_to_IOP_layer_timeout
#0 0x00007fae049d4067 in raise () from /lib/x86_64-linux-gnu/libc.so.6 #1 0x00007fae056dd08a in vkiPanic () from /raid/lib/libeos-System.so #5 0x00007faded199cfd in iop::TaskMonitor::endOfInterval() (...#0 0x00007fae049d4067 in raise () from /lib/x86_64-linux-gnu/libc.so.6 #1 0x00007fae056dd08a in vkiPanic () from /raid/lib/libeos-System.so #5 0x00007faded199cfd in iop::TaskMonitor::endOfInterval() () from /raid/lib/libeos-RAID.so #6 0x00007faded85b54a in utl::Interval::timeExpired(utl::DllTimerNode*) () from /raid/lib/libeos-RAID.so #7 0x00007faded86ef3f in utl::TimerManager::task() () from /raid/lib/libeos-RAID.so No symbol table info available.