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** Changed in: linux (Ubuntu)
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https://bugs.launchpad.net/bugs/1886404
Title:
Ubuntu 16.04 nodes getting hung without any error logs and reboots
Status in linux package in Ubuntu:
Incomplete
Bug description:
Hello Guys,
In one of the Ubuntu nodes we have kernel 4.13.0-36-generic
#40~16.04.1-Ubuntu SMP Fri Feb 16 23:25:58 UTC 2018 x86_64 x86_64
x86_64 GNU/Linux
We have 3 Mon nodes and 20 Data Nodes Ceph Cluster and have installed
ceph version 14.2.8 (2d095e947a02261ce61424021bb43bd3022d35cb)
nautilus (stable)
On Monday around 04:36 AM IST, one of the Data Node hung and got rebooted
around 05:03 AM IST. Same issue occured in 3 different Data Nodes on different
days and time prior to this.
While checking osd logs there were heartbeat logs got generated when other DN
was in hung state. Checked syslog as well but couldn't find anything unusual.
After reboot of the node below messages were logged :
Jun 8 05:03:51 nvmbdprp012682 kernel: [ 0.000000] tsc: Fast TSC
calibration failed
Jun 8 05:03:51 nvmbdprp012682 kernel: [ 0.250233] acpi PNP0A03:00:
_OSC failed (AE_NOT_FOUND); disabling ASPM
Jun 8 05:03:51 nvmbdprp012682 kernel: [ 0.251101] acpi PNP0A03:01:
_OSC failed (AE_NOT_FOUND); disabling ASPM
Jun 8 05:03:51 nvmbdprp012682 kernel: [ 0.310575] pci 0000:04:00.0: BAR
6: failed to assign [mem size 0x00100000 pref]
Jun 8 05:03:51 nvmbdprp012682 kernel: [ 0.310579] pci 0000:04:00.1: BAR
6: no space for [mem size 0x00100000 pref]
Jun 8 05:03:51 nvmbdprp012682 kernel: [ 0.310582] pci 0000:04:00.1: BAR
6: failed to assign [mem size 0x00100000 pref]
Jun 8 05:04:04 nvmbdprp012682 kernel: [ 31.107338] dsa_filter_hook:
module verification failed: signature and/or required key missing -
tainting kernel
Jun 8 05:04:37 nvmbdprp012682 snapd[2836]: stateengine.go:102: state
ensure error: Get https://api.snapcraft.io/api/v1/snaps/sections:
net/http: request canceled while waiting for connection
(Client.Timeout exceeded while awaiting headers)
Can you please help me on figuring out the root cause. Are above logs can
cause such behaviour or anything else is causing this issue which i am not able
to see?
Let me know if anymore information is needed in this regard.
Thanks
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