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Bug 1918923 - taking eeprom dump (ethtool -e) of several device types makes the system instable
Summary: taking eeprom dump (ethtool -e) of several device types makes the system inst...
Keywords:
Status: CLOSED DUPLICATE of bug 1918875
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: ethtool
Version: 8.4
Hardware: Unspecified
OS: Linux
high
high
Target Milestone: rc
: 8.0
Assignee: Ivan Vecera
QA Contact: Tianhao
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-01-21 17:26 UTC by Pavel Moravec
Modified: 2021-01-21 17:35 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2021-01-21 17:32:43 UTC
Type: Bug
Target Upstream Version:
Embargoed:
pm-rhel: mirror+


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Bugzilla 1869724 0 urgent CLOSED sosreport running 'ethtool -e' is causing bnx2x NICs to pause 2023-12-15 18:54:57 UTC
Red Hat Bugzilla 1917074 0 urgent CLOSED sosreport (ethtool -e) causes ovs-dpdk bonds to flap [rhel-7.9.z] 2024-06-13 23:56:41 UTC
Red Hat Bugzilla 1917196 0 urgent CLOSED network glitch while running ethtool -e command in sosreport 2024-10-01 17:22:53 UTC

Description Pavel Moravec 2021-01-21 17:26:50 UTC
Description of problem:
It has been noticed that "ethtool -e <device>" for several types of NICs negatively affects the underlying system. In particular:

- bz1869724: RHEL8.3, bnx2x driver, the device is paused for several seconds
- bz1917074: RHEL7.*, tg3 driver (maybe in ovs-dpdk bond only), OOM / memory balloon, command hung, ports flapped
- bz1917196: RHEL8.*, i40e driver, network glitch for 17 seconds

We don't claim the three bugzillas have the same root cause, as they were noticed on different driver types. But all were noticed in quite short timeframe, so *probably* they can have something in common.

Please make the eeprom dump ore robust, not affecting production.


Version-Release number of selected component (if applicable):
See above BZs for details.


How reproducible:
100% per the reproducers in the three BZs.


Steps to Reproduce:
1. See the BZs.


Actual results:
eeprom dump negatively affects the network traffic for too long time


Expected results:
No impact to production (I guess a very short delay can be acceptable).


Additional info:

Comment 1 Pavel Moravec 2021-01-21 17:32:43 UTC
closing it in favour of driver specific BZs:

tg3 - https://bugzilla.redhat.com/show_bug.cgi?id=1918875
i40e - https://bugzilla.redhat.com/show_bug.cgi?id=1918889
bnx2x - https://bugzilla.redhat.com/show_bug.cgi?id=1918897

*** This bug has been marked as a duplicate of bug 1918875 ***


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