Red Hat Bugzilla – Bug 623550
/etc/cron.hourly/mcelog.cron: read: No such device
Last modified: 2011-03-03 04:05:22 EST
Description of problem:
read: No such device
Version-Release number of selected component (if applicable):
Happens every once in a while
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.
Looks like a duplicate of kernel Bug #615530
Comments there suggest the message appears the first time the job runs after reboot.
*** This bug has been marked as a duplicate of bug 595930 ***
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.