Bug 1968528

Summary: fix rate-limiting of mount events
Product: Red Hat Enterprise Linux 8 Reporter: Lucas López Montero <llopezmo>
Component: systemdAssignee: Michal Sekletar <msekleta>
Status: CLOSED ERRATA QA Contact: Frantisek Sumsal <fsumsal>
Severity: urgent Docs Contact:
Priority: urgent    
Version: 8.4CC: amulmule, chdeshpa, djuran, dtardon, ealcaniz, miabbott, msekleta, pdwyer, pibanezr, sbroz, systemd-maint-list, ykashtan
Target Milestone: betaKeywords: Triaged, ZStream
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
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Fixed In Version: systemd-239-49.el8 Doc Type: If docs needed, set a value
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Clone Of:
: 1984406 (view as bug list) Environment:
Last Closed: 2021-11-09 19:57:06 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 1984406    

Description Lucas López Montero 2021-06-07 13:55:40 UTC 
Description of problem:

The fix for Bug 1819868 has introduced a new issue related to its implementation of rate limiting.

See more details on this discussion [1], where the problem was reported. Description provided:

Rate limiting the mount_event_source can cause unmount events to be
missed, which leads to mount unit cgroups being leaked (not cleaned up
when the mount is gone).


Version-Release number of selected component (if applicable): Systemd 248.2.



[1] https://github.com/systemd/systemd/pull/19811
Comment 5 Michal Sekletar 2021-06-24 11:40:03 UTC 
The fix was merged upstream hence we can proceed with the backport to RHEL-8.4 (problematic code isn't in any older release hence I am changing ZTR accordingly).
Comment 6 Lucas López Montero 2021-07-07 07:57:44 UTC 
Is there news about the backport to RHEL 8.4? Thank you.
Comment 12 Lukáš Nykrýn 2021-07-21 12:16:27 UTC 
fix merged to github master branch -> https://github.com/redhat-plumbers/systemd-rhel8/pull/198
Comment 21 errata-xmlrpc 2021-11-09 19:57:06 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (systemd bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2021:4469