CHW-2478：MSATAデバイスの障害が原因でAFFまたはFASストレージシステムが起動しない

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問題

次のストレージシステムでコントローラが停止し、ブートに失敗します。

AFF C190、AFF A150、AFF A200、AFF A220、AFF A300、AFF A700
FAS2620、FAS2650、FAS2720、FAS2750、FAS2820、FAS8200、FAS9000

ノードが次のいずれかで停止します。
PANIC: thread (xxx) on cpu hung for 4001 milliseconds in process xxx Panic string: g_vfs_done(): rootfs.uzip read error - suspect boot device Panic string: Process mgwd unresponsive for 620 seconds in process nodewatchdog Could not load fat://boot0/X86_64/freebsd/image1/kernel:Device not found ERROR: Error booting OS on: 'boot0' file: fat://boot0/X86_64/freebsd/image1/kernel (boot0,fat)
自動ブートが失敗して次のエラーメッセージが表示されます。
BIOS Version: 11.7 Portions Copyright (C) 2014-2018 NetApp, Inc. All Rights Reserved. Initializing System Memory ... Loading Device Drivers ... Configuring Devices ... CPU = 1 Processor(s) Detected. Intel(R) Xeon(R) CPU D-1557 @ 1.50GHz (CPU 0) CPUID: 0x00050664. Cores per Processor = 12 32768 MB System RAM Installed. Boot Loader version 6.0.8 Copyright (C) 2000-2003 Broadcom Corporation. Portions Copyright (C) 2002-2018 NetApp, Inc. All Rights Reserved.
(star)ERROR: Failure to build endpoint environment variables. Autoboot will be disabled.(star)
BMCイベントログには次のエラーが記録されています。
[Controller.notice]: Appliance user command panic. [IPMI.notice]: 001f | 02 | EVT: 6f406fff | Sensor 255 | Assertion Event, "Storage OS stop/shutdown" [BMC.critical]: Filer Reboots [IPMI.notice]: (PUA) Enable power to all PCIe slots [IPMI.notice]: (PUA) Enable power to all PCIe on board device [IPMI.notice]: (PUA) P_stat :slots=0x0,onboard_devs=0x0,final [IPMI.notice]: (PUA) Power status of all PCIe slots unchanged [IPMI.notice]: 0023 | 02 | EVT: 6fc203ff | System_FW_Status | Assertion Event, "Memory Initialization done"
[SysFW.warning]: Error loading ENV variables, creating defaults
[SysFW.warning]: Failed to read FW image on boot media: Device not found. Auto up
[SysFW.warning]: date skipped [IPMI.notice]: 0024 | 02 | EVT: 6fc220ff | System_FW_Status | Assertion Event, "Bootloader is running" [BMC.critical]: Heartbeat stopped