Bug 1929856
| Summary: | systemd-oomd kills anaconda in the middle of system install when installing from KDE live image with 2GB RAM | ||||||||
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| Product: | [Fedora] Fedora | Reporter: | Adam Williamson <awilliam> | ||||||
| Component: | systemd | Assignee: | Michel Lind <michel> | ||||||
| Status: | CLOSED CURRENTRELEASE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||||
| Severity: | urgent | Docs Contact: | |||||||
| Priority: | unspecified | ||||||||
| Version: | 34 | CC: | bugzilla, fedoraproject, filbranden, flepied, geraldo.simiao.kutz, kasong, lnykryn, michel, msekleta, robatino, ssahani, s, systemd-maint, the.anitazha, yuwatana, zbyszek, z | ||||||
| Target Milestone: | --- | ||||||||
| Target Release: | --- | ||||||||
| Hardware: | All | ||||||||
| OS: | Linux | ||||||||
| Whiteboard: | openqa | ||||||||
| Fixed In Version: | systemd-oomd-defaults-247.3-3 | Doc Type: | If docs needed, set a value | ||||||
| Doc Text: | Story Points: | --- | |||||||
| Clone Of: | Environment: | ||||||||
| Last Closed: | 2021-02-19 08:01:40 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: | 1829022, 1913794 | ||||||||
| Attachments: |
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Description
Adam Williamson
2021-02-17 19:15:01 UTC
Proposing as a Beta blocker as a conditional violation of "The installer must be able to complete an installation using any supported locally connected storage interface" (and all other criteria that imply successful installation), when attempted with 2GB of RAM or less from the KDE live. https://docs.fedoraproject.org/en-US/fedora/rawhide/release-notes/welcome/Hardware_Overview/#hardware_overview-specs Minimum System Configuration 1GHz or faster processor 2GB System Memory 10GB unallocated drive space However, there's a 'low memory installations' section that proposes both "less than 768MB of system memory" and "less than 1GB of memory". https://getfedora.org/en/workstation/download/ * Fedora requires a minimum of 20GB disk, 2GB RAM, to install and run successfully. Double those amounts is recommended. I think that'd be consistent with KDE too. If it's not possible then (a) oomd should disable itself with a suitable message, and/or (b) we need to increase the minimum memory requirements. It installed normally with 4Gb RAM and 4CPUs on KVM/qemu virt-manager install. Created attachment 1757662 [details]
journalctl
$ journalctl --no-hostname -o short-monotonic --no-pager
This is in a qemu-kvm, 2G RAM. The swap (on zram) is ~20% full at the time of the kill. It's strictly a memory pressure kill.
There are two kill events:
[ 325.044689] systemd-oomd[993]: Memory pressure for /user.slice/user-1000.slice/user is greater than 4 for more than 10 seconds and there was reclaim activity
[ 325.057782] systemd[1313]: plasma-plasmashell.service: systemd-oomd killed 69 process(es) in this unit.
[ 340.059781] systemd-oomd[993]: Memory pressure for /user.slice/user-1000.slice/user is greater than 4 for more than 10 seconds and there was reclaim activity
[ 340.108661] systemd[1313]: app-org.kde.korgac-autostart.service: systemd-oomd killed 65 process(es) in this unit.
Created attachment 1757672 [details]
oomctl data when invoking liveinst
cmurf provided this data that we're using to tweak oomd's settings
So the data shows memory pressure peaking at just under 9% right before oomd kills anaconda. We verified that bumping the threshold to 10% allows Anaconda to complete the installation https://src.fedoraproject.org/rpms/systemd/pull-request/51 with this change Should be fixed in https://bodhi.fedoraproject.org/updates/FEDORA-2021-dadbaaac54 |