This seems to be an issue with the kernel and not an issue with MAAS
directly. Which Ubuntu release is set as the commissioning release on
the Global Settings page? If you can provide the full console log of the
boot that would be helpful as well.
** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Changed in: maas
Status: New => Invalid
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https://bugs.launchpad.net/bugs/1820967
Title:
MAAS failing to commission HP ProLiant DL385 G7 (AMD Opteron 6172)
Status in MAAS:
Invalid
Status in linux package in Ubuntu:
New
Bug description:
Hello,
We have some HP ProLiant DL385 G7 (AMD Opteron 6172) servers which
MAAS is failing to commission. We have also tried other servers on the
same MAAS deployment that work with any issue.
We try to commission a "New" machine, it boots from PXE and we get the
following messages:
[ 90.598545] x86/PAT: impi-locate:2905 map pfn expected mapping type
uncached-minus for [mem 0xbde1c000-0xbde1cfff], got write-back
[ 90.599073] x86/PAT: impi-locate:2905 map pfn expected mapping type
uncached-minus for [mem 0xbde1d000-0xbde1dfff], got write-back
[ 90.599278] x86/PAT: impi-locate:2905 map pfn expected mapping type
uncached-minus for [mem 0xbde1c000-0xbde1cfff], got write-back
[ 90.599814] x86/PAT: impi-locate:2905 map pfn expected mapping type
uncached-minus for [mem 0xbde1d000-0xbde1dfff], got write-back
Starting STop ureadahead data collection...
Stopping Read required files in advance...
[ OK ] Started Stop ureadahead data collection.
[ 150.880073] INFO: rcu_sched detected stalls on CPUs/tasks:
[ 150.880197] 0-...!: (0 ticks this GP) idle=ee4/0/0 softirq=2489/2489
fqs=0
[ 150.880303] 12-...!: (0 ticks this GP) idle=0d8/0/0 softirq=2429/2429
fqs=0
[ 150.880408] 21-...!: (51 GPs behind) idle=f10/0/0 softirq=1692/1694
fqs=0
[ 150.880510] 23-...!: (19 GPs behind) idle=28c/0/0 softirq=1761/1761
fqs=0
[ 150.880610] (detected by 2, t=15002 jiffies, g=2532, c=2531, q=2143)
[ 150.884754] rcu_sched kthread starved for 15003 jiffies! g2532 c2531
f0x0 RCU_GP_WAIT_FQS(3) ->state=0x402 ->cpu=0
[ OK ] Stopped Read required files in advance.
[ OK ] Stopped Flush Journal to Persistent Storage.
Stopping Flush Journal to Persistent Storage...
[ OK ] Stopped Journal Service.
Starting Journal Service....
[ OK ] Started Journal Service.
Starting Flush Journal to Persistent Storage...
[ OK ] Started Flush Journal to Persistent Storage.
[ 363.217837] INFO: task kworker/7:1:185 blocked for more than 120
seconds.
[ 363.217950] Not tainted 4.15.0-46-generic #49-Ubuntu
[ 363.218046] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 363.218375] INFO: task ipmi-config:2937 blocked for more than 120
seconds.
[ 363.218476] Not tainted 4.15.0-46-generic #49-Ubuntu
[ 363.218571] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 484.217837] INFO: task kworker/7:1:185 blocked for more than 120
seconds.
[ 484.217950] Not tainted 4.15.0-46-generic #49-Ubuntu
[ 484.218046] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 484.218375] INFO: task ipmi-config:2937 blocked for more than 120
seconds.
[ 484.218476] Not tainted 4.15.0-46-generic #49-Ubuntu
[ 484.218571] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
These 2 INFO messages continue to show until commissioning fails at
30min timeout.
In approximately 1 out of 10 tries the server will be commissioned
successfully but then the same behavior will occur in the deployment
process.
One thing I tried was in Settings -> General -> Global Kernel
Parameters, I placed the "nosmp" boot parameter which makes
Commissioning succeed every time but the Machine then has only 1 CPU.
Thank you in advance,
Yanos
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