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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 ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: bot-comment -- Ubuntu 16.04 nodes getting hung without any error logs and reboots https://bugs.launchpad.net/bugs/1886404 You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
