Bug 623550

Summary:	/etc/cron.hourly/mcelog.cron: read: No such device
Product:	[Fedora] Fedora	Reporter:	Nicolas Mailhot <nicolas.mailhot>
Component:	mcelog	Assignee:	Jon Masters <jcm>
Status:	CLOSED DUPLICATE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	low
Version:	14	CC:	balay, dylan.swift, goeran, h1k6zn2m, jcm, jonathan, mattia.verga, me, paul, uckelman
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2010-11-10 04:14:59 UTC	Type:	---
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:	538278

Description Nicolas Mailhot 2010-08-12 06:13:47 UTC

Description of problem:
/etc/cron.hourly/mcelog.cron:

read: No such device

Version-Release number of selected component (if applicable):
mcelog-0.9pre1-0.1.fc13.x86_64
kernel-2.6.35.1-5.rc1.fc14.x86_64


How reproducible:
Happens every once in a while

Comment 1 Jon Masters 2010-08-17 18:03:12 UTC

Thanks. We've seen a few of these, so it's probably a DUP and I'll fix that up later. Just taking the bug for now.

Comment 2 Paul Howarth 2010-10-28 13:21:33 UTC

Looks like a duplicate of kernel Bug #615530

Comments there suggest the message appears the first time the job runs after reboot.

Comment 3 Jon Masters 2010-11-10 04:14:59 UTC


*** This bug has been marked as a duplicate of bug 595930 ***

Comment 4 Jon Masters 2010-11-10 09:04:26 UTC

Ok. There are two bugs here. Some systems don't have an MCE device. Some do, and in either case you might have a /dev/mcelog device but the first read from it generally will fail after booting. I added a hack to the version of mcelog that I just built (which also reworks it to use systemd and run as a daemon) such that it will try twice - delaying between opens - as a horrible hack until Andi fixes whatever is broken in the kernel. I will ping him shortly as I have quite a list of things I had to fix in mcelog to make it work as a daemon that obviously had never been tested in the upstream version.