From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Richard W.M. Jones" Subject: Re: hang after seabios Date: Thu, 31 Jul 2014 20:17:16 +0100 Message-ID: <20140731191716.GF1302@redhat.com> References: <20140731113138.GA26605@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: libguestfs@redhat.com, kvm To: Zetan Drableg Return-path: Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: libguestfs-bounces@redhat.com Errors-To: libguestfs-bounces@redhat.com List-Id: kvm.vger.kernel.org On Thu, Jul 31, 2014 at 12:12:26PM -0700, Zetan Drableg wrote: > Hi Richard thanks for the info. > I took the strace approach and ran into this looping over and over again. > Is it failing to get time? > > timer_gettime(0x8, {it_interval={0, 0}, it_value={0, 0}}) = 0 > timer_settime(0x8, 0, {it_interval={0, 0}, it_value={0, 250000}}, NULL) = 0 > timer_gettime(0x8, {it_interval={0, 0}, it_value={0, 204443}}) = 0 > select(16, [0 6 9 13 15], [], [], {1, 0}) = 2 (in [6 13], left {0, 999998}) > read(13, "\1\0\0\0\0\0\0\0", 4096) = 8 > read(13, 0x7fffa2ed3f70, 4096) = -1 EAGAIN (Resource > temporarily unavailable) > read(6, "\0", 512) = 1 > read(6, 0x7fffa2ed4d70, 512) = -1 EAGAIN (Resource > temporarily unavailable) > select(16, [0 6 9 13 15], [], [], {1, 0}) = 1 (in [15], left {0, 999998}) > read(15, "\16\0\0\0\0\0\0\0\376\377\377\377\0\0\0\0\0\0\0\0\0\0\0\0\10\0\0\0\0\0\0\0"..., > 128) = 128 > rt_sigaction(SIGALRM, NULL, {0x7f6d8b8d17d0, ~[KILL STOP RTMIN RT_1], > SA_RESTORER, 0x7f6d8b211710}, 8) = 0 > write(7, "\0", 1) = 1 > write(14, "\1\0\0\0\0\0\0\0", 8) = 8 > read(15, 0x7fffa2ed4ee0, 128) = -1 EAGAIN (Resource > temporarily unavailable) > timer_gettime(0x8, {it_interval={0, 0}, it_value={0, 0}}) = 0 > timer_settime(0x8, 0, {it_interval={0, 0}, it_value={0, 988758000}}, NULL) = 0 > select(16, [0 6 9 13 15], [], [], {1, 0}) = 2 (in [6 13], left {0, 999998}) > read(13, "\1\0\0\0\0\0\0\0", 4096) = 8 > read(13, 0x7fffa2ed3f70, 4096) = -1 EAGAIN (Resource > temporarily unavailable) > read(6, "\0", 512) = 1 > read(6, 0x7fffa2ed4d70, 512) = -1 EAGAIN (Resource > temporarily unavailable) > > It looks a lot like the bug you filed here. > https://bugzilla.redhat.com/show_bug.cgi?id=553689 I'm fairly sure this is just qemu running as normal. It's not a duplicate of that ancient bug, because you can see from the messages that SeaBIOS is running. You need to `gdb' into the guest to see where the emulation got to. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-top is 'top' for virtual machines. Tiny program with many powerful monitoring features, net stats, disk stats, logging, etc. http://people.redhat.com/~rjones/virt-top