I am trying to copy(~7TB of data using rsync) between two server in same
data center in the backend its using EMC VMAX3
After copying ~30-40GB of data multipath start failing
Dec 15 01:57:53 test.example.com multipathd:
360000970000196801239533037303434: Recovered to normal mode
Dec 15 01:57:53 test.example.com multipathd:
360000970000196801239533037303434: remaining active paths: 1
Dec 15 01:57:53 test.example.com kernel: sd 1:0:2:20: [sdeu] Result:
hostbyte=DID_ERROR driverbyte=DRIVER_OK
[root@test log]# multipath -ll |grep -i fail
|- 1:0:0:15 sdq 65:0 failed ready running
- 3:0:0:15 sdai 66:32 failed ready running
We are using default multipath.conf
HBA driver version 8.07.00.26.06.8-k
HBA model QLogic Corp. ISP8324-based 16Gb Fibre Channel to PCI Express
Adapter
OS: CentOS 64-bit/2.6.32-642.6.2.el6.x86_64
Hardware:Intel/HP ProLiant DL380 Gen9
Already verified this solution and checked with EMC everything looks good
https://access.redhat.com/solutions/438403
Some more info
- There is no drop/error packet on the network side.
Filesystem is mounted with noatime,nodiratime
Filesystem ext4(Already tried xfs but same error)
LVM is in striped mode(Started with linear option and then converted to
striped)
Already disabled THP
echo never > /sys/kernel/mm/redhat_transparent_hugepage/enabled
Whenever multipath start failing process goes to D state
System firmware upgraded
Tried with latest version of qlogic driver
Tried with different scheduler(noop,deadline,cfq)
Tried with different tuned profile(enterprise-storage)
Vmcore collected during the time of issue
I am able to collect vmcore during the time of issue
KERNEL: /usr/lib/debug/lib/modules/2.6.32-642.6.2.el6.x86_64/vmlinux
DUMPFILE: vmcore [PARTIAL DUMP]
CPUS: 36
DATE: Fri Dec 16 00:11:26 2016
UPTIME: 01:48:57
LOAD AVERAGE: 0.41, 0.49, 0.60
TASKS: 1238
NODENAME: test.example.com
RELEASE: 2.6.32-642.6.2.el6.x86_64
VERSION: #1 SMP Wed Oct 26 06:52:09 UTC 2016
MACHINE: x86_64 (2297 Mhz)
MEMORY: 511.9 GB
PANIC: "BUG: unable to handle kernel NULL pointer dereference at
0000000000000018"
PID: 15840
COMMAND: "kjournald"
TASK: ffff884023446ab0 [THREAD_INFO: ffff88103def4000]
CPU: 2
STATE: TASK_RUNNING (PANIC)
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