Public bug reported:
After restoring a snapshot on a running container a hung task task oops
trace gets logged for flush-zfs.
The command run was:
% lxc restore wedgeiq foo1
If the container is not running restoring seems less likely to cause the
hung task.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-generic 4.4.0.131.137
ProcVersionSignature: Ubuntu 4.4.0-131.157-generic 4.4.134
Uname: Linux 4.4.0-131-generic x86_64
NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Aug 7 16:03 seq
crw-rw---- 1 root audio 116, 33 Aug 7 16:03 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq',
'/dev/snd/timer'] failed with exit code 1:
Date: Tue Aug 7 16:36:34 2018
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
Lsusb:
Bus 001 Device 002: ID 8087:8000 Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 002: ID 046d:c31c Logitech, Inc. Keyboard K120
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: NEXCOM NSA-5160
PciMultimedia:
ProcEnviron:
SHELL=/bin/bash
TERM=xterm-256color
PATH=(custom, no user)
LANG=en_US.UTF-8
ProcFB: 0 astdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-131-generic
root=/dev/mapper/VG_WARP-WARPDRIVE ro intel_iommu=on net.ifnames=1
RelatedPackageVersions:
linux-restricted-modules-4.4.0-131-generic N/A
linux-backports-modules-4.4.0-131-generic N/A
linux-firmware 1.157.20
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/25/2017
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 5.11
dmi.board.asset.tag: Default string
dmi.board.name: Default string
dmi.board.vendor: Default string
dmi.board.version: Default string
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 23
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr5.11:bd07/25/2017:svnNEXCOM:pnNSA-5160:pvrDefaultstring:rvnDefaultstring:rnDefaultstring:rvrDefaultstring:cvnDefaultstring:ct23:cvrDefaultstring:
dmi.product.name: NSA-5160
dmi.product.version: Default string
dmi.sys.vendor: NEXCOM
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug xenial
** Attachment added: "output from ubuntu-bug"
https://bugs.launchpad.net/bugs/1785856/+attachment/5172703/+files/apport.linux-image-4.4.0-131-generic.xym7ry1v.apport
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https://bugs.launchpad.net/bugs/1785856
Title:
hung task flush-zfs
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