RHEL7.4: kdump fails due to megaraid_sas driver issues in kexec kernel
Issue
- kdump is failing with error message showing
megasas_init_fwfails and because of this the kexec kernel cannot find the root disk
[ 2316.719676] RIP [<ffffffff81400816>] sysrq_handle_crash+0x16/0x20 <------------------------ original kernel
[ 2316.730786] RSP <ffff880c116d3e58>
[ 2316.738876] CR2: 0000000000000000
[ 0.000000] Initializing cgroup subsys cpuset <-------------------- kexec kernel starts
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Initializing cgroup subsys cpuacct
[ 0.000000] Linux version 3.10.0-693.17.1.el7.x86_64 (mockbuild@x86-041.build.eng.bos.redhat.com) (gcc version 4.8.5 20150623 (Red Hat 4.8.5-16) (GCC) ) #1 SMP Sun Jan 14 10:36:03 EST 2018
...
[ 196.367537] megaraid_sas 0000:03:00.0: Ignore DCMD timeout: megasas_get_ctrl_info 4735
[ 197.379488] megaraid_sas 0000:03:00.0: Could not get controller info. Fail from megasas_init_adapter_fusion 1370
[ 197.393697] megaraid_sas 0000:03:00.0: Failed from megasas_init_fw 5537 <-------------- some problem with storage driver
[ 310.971018] dracut-initqueue[268]: Warning: dracut-initqueue timeout - starting timeout scripts
[ 311.490496] dracut-initqueue[268]: Warning: dracut-initqueue timeout - starting timeout scripts
[ 312.000287] dracut-initqueue[268]: Warning: dracut-initqueue timeout - starting timeout scripts
...
[ 371.658379] dracut-initqueue[268]: Warning: dracut-initqueue timeout - starting timeout scripts
[ 371.670274] dracut-initqueue[268]: Warning: Could not boot.
[ 371.678278] dracut-initqueue[268]: Warning: /dev/disk/by-uuid/e61f6978-2a9f-4a7d-b90b-fa08ccbe0d69 does not exist
[ 371.691265] dracut-initqueue[268]: Warning: /dev/mapper/rhel-root does not exist <----------- failed due to storage driver
[ 371.701262] dracut-initqueue[268]: Warning: /dev/rhel/root does not exist
[ 371.709260] dracut-initqueue[268]: Warning: /dev/rhel/swap does not exist
[ OK ] Stopped target Basic System.
[ OK ] Stopped target System Initialization.
Starting Kdump Emergency...
Environment
- Red Hat Enterprise Linux 7.4
- kernel-3.10.0-693.17.1.el7
- kdump / kexec kernel
- root filesystem on xfs over megaraid_sas driver
- megaraid_sas (Red Hat's driver, not 3rd party)
- see Diagnostic Steps for more details
filename: /lib/modules/3.10.0-693.17.1.el7.x86_64/kernel/drivers/scsi/megaraid/megaraid_sas.ko.xz
description: Avago MegaRAID SAS Driver
author: megaraidlinux.pdl@avagotech.com
version: 07.701.17.00-rh1
license: GPL
rhelversion: 7.4
srcversion: 5DA9AE7D4C4BA4FE7B77BBA
- hardware: Cisco UCS-C240-M4
- MegaRAID SAS-3 3108 [Invader] [1000:005d] (rev 02)
- see Diagnostic Steps for detailed info
03:00.0 RAID bus controller [0104]: LSI Logic / Symbios Logic MegaRAID SAS-3 3108 [Invader] [1000:005d] (rev 02)
Subsystem: Cisco Systems Inc Device [1137:00db]
Physical Slot: 0-2
...
Kernel driver in use: megaraid_sas
Kernel modules: megaraid_sas
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