[Bug 1534311] Re: Excessive warnings regarding stat()ing of cgroup filesystems

Alberto Salvia Novella es20490446e at gmail.com
Fri May 27 16:12:08 UTC 2016


** Changed in: lsof (Ubuntu)
   Importance: Undecided => Medium

** Also affects: hundredpapercuts
   Importance: Undecided
       Status: New

** Changed in: hundredpapercuts
       Status: New => Confirmed

** Changed in: hundredpapercuts
   Importance: Undecided => Medium

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https://bugs.launchpad.net/bugs/1534311

Title:
  Excessive warnings regarding stat()ing of cgroup filesystems

Status in One Hundred Papercuts:
  Confirmed
Status in lsof package in Ubuntu:
  Confirmed

Bug description:
  Every invocation of lsof results in 24 lines of warnings being printed
  to stderr. This is excessive and, at least for my use cases, not
  useful information.

  $ mkdir foo && lsof +D foo
  lsof: WARNING: can't stat() tmpfs file system /run/lxcfs/controllers
        Output information may be incomplete.
  lsof: WARNING: can't stat() cgroup file system /run/lxcfs/controllers/name=systemd
        Output information may be incomplete.
  lsof: WARNING: can't stat() cgroup file system /run/lxcfs/controllers/cpu,cpuacct
        Output information may be incomplete.
  lsof: WARNING: can't stat() cgroup file system /run/lxcfs/controllers/pids
        Output information may be incomplete.
  lsof: WARNING: can't stat() cgroup file system /run/lxcfs/controllers/cpuset
        Output information may be incomplete.
  lsof: WARNING: can't stat() cgroup file system /run/lxcfs/controllers/net_cls,net_prio
        Output information may be incomplete.
  lsof: WARNING: can't stat() cgroup file system /run/lxcfs/controllers/devices
        Output information may be incomplete.
  lsof: WARNING: can't stat() cgroup file system /run/lxcfs/controllers/freezer
        Output information may be incomplete.
  lsof: WARNING: can't stat() cgroup file system /run/lxcfs/controllers/perf_event
        Output information may be incomplete.
  lsof: WARNING: can't stat() cgroup file system /run/lxcfs/controllers/hugetlb
        Output information may be incomplete.
  lsof: WARNING: can't stat() cgroup file system /run/lxcfs/controllers/memory
        Output information may be incomplete.
  lsof: WARNING: can't stat() cgroup file system /run/lxcfs/controllers/blkio
        Output information may be incomplete.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: lsof 4.89+dfsg-0.1
  ProcVersionSignature: Ubuntu 4.3.0-5.16-generic 4.3.3
  Uname: Linux 4.3.0-5-generic x86_64
  ApportVersion: 2.19.3-0ubuntu3
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Thu Jan 14 21:12:45 2016
  InstallationDate: Installed on 2014-03-16 (668 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140316)
  SourcePackage: lsof
  UpgradeStatus: Upgraded to xenial on 2015-11-22 (52 days ago)

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