Gentoo Archives: gentoo-user

From: Mark Knecht <markknecht@×××××.com>
To: Gentoo User <gentoo-user@l.g.o>
Subject: [gentoo-user] Magic SysRq didn't work today
Date: Wed, 28 Sep 2011 22:06:20
Message-Id: CAK2H+ecPLEjsZouq0YU=_JX0Q7qc-OsvmOc9fEf=AXfQAo0w2Q@mail.gmail.com
1 Hi,
2 For the first time in a couple of years I had a total hard hang
3 today when a Virtualbox VM was doing some updates to M$ Office. The
4 compute server was completely alive & then completely hung. The mouse
5 wouldn't move, I couldn't switch to the console and I couldn't log in
6 from another machine. I tried Alt-Ctrl-SysRq REISUB but there was no
7 response to that either so I went with a hard reset and did some
8 fsck's to ensure everything was OK. (It was...) After bringing the
9 machine back up I tested that the Magic SysRq worked, and it did, so
10 the hang was hard enough to stop even that.
11
12 My question about this is what's your guess about where the hang
13 occurred? Was it purely in the kernel and I just hit some corner
14 condition that caused it? Or could it be that a hang in the VM could
15 completely bring the machine to a halt such that the kernel never
16 gains control even after waiting 15 minutes?
17
18 The kernel was gentoo-sources-3.0.4, not the -r1 that came out today.
19
20 Looking forward to all ideas.
21
22 Cheers,
23 Mark

Replies

Subject Author
Re: [gentoo-user] Magic SysRq didn't work today Dale <rdalek1967@×××××.com>
Re: [gentoo-user] Magic SysRq didn't work today "Niccolò Belli" <darkbasic@××××××××××××.it>