63 lines
2.5 KiB
Diff
63 lines
2.5 KiB
Diff
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From f079550490496eb1008fe73620ab5db3bd4a99a8 Mon Sep 17 00:00:00 2001
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From: Paul Wise <pabs3@bonedaddy.net>
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Date: Thu, 3 May 2018 11:06:09 +0800
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Subject: [PATCH 09/11] Improve the message that is printed when Linux
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taskstats are not found
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Usually this means that iotop is being run in a container.
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The Linux kernel doesn't support taskstats outside the host net namespace.
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There was a patch that looks like it may fix this but it never got merged.
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Traceback (most recent call last):
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File "/usr/sbin/iotop", line 17, in <module>
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main()
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File "/usr/lib/python3/dist-packages/iotop/ui.py", line 737, in main
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main_loop()
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File "/usr/lib/python3/dist-packages/iotop/ui.py", line 727, in <lambda>
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main_loop = lambda: run_iotop(options)
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File "/usr/lib/python3/dist-packages/iotop/ui.py", line 618, in run_iotop
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return run_iotop_window(None, options)
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File "/usr/lib/python3/dist-packages/iotop/ui.py", line 609, in run_iotop_window
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taskstats_connection = TaskStatsNetlink(options)
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File "/usr/lib/python3/dist-packages/iotop/data.py", line 151, in __init__
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self.family_id = controller.get_family_id('TASKSTATS')
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File "/usr/lib/python3/dist-packages/iotop/genetlink.py", line 76, in get_family_id
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m = GeNlMessage.recv(self.conn)
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File "/usr/lib/python3/dist-packages/iotop/genetlink.py", line 56, in recv
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msg = conn.recv()
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File "/usr/lib/python3/dist-packages/iotop/netlink.py", line 255, in recv
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raise err
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OSError: Netlink error: No such file or directory (2)
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See-also: https://blog.outlyer.com/using-netlink-to-calculate-load-averages
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See-also: https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg924689.html
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See-also: https://bugzilla.redhat.com/show_bug.cgi?id=1290691
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See-also: https://bugs.openvz.org/browse/OVZ-5655
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---
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iotop/ui.py | 9 +++++++++
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1 file changed, 9 insertions(+)
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diff --git a/iotop/ui.py b/iotop/ui.py
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index 848c42b..328dafe 100644
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--- a/iotop/ui.py
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+++ b/iotop/ui.py
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@@ -520,6 +520,15 @@ configure sudo to allow you to run iotop as root.
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Please do not file bugs on iotop about this.''', file=sys.stderr)
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sys.exit(1)
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+ if e.errno == errno.ENOENT:
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+ print(e, file=sys.stderr)
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+ print('''
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+The Linux kernel interfaces that iotop relies on for process I/O statistics
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+were not found. Please enable CONFIG_TASKSTATS in your Linux kernel build
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+configuration, use iotop outside a container and or share the host's
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+network namespace with the container.
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+
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+Please do not file bugs on iotop about this.''', file=sys.stderr
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else:
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raise
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--
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1.8.3.1
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