On 03/12/2015 13:54, Jonathan Billings wrote:> On Thu, Dec 03, 2015 at 01:44:47PM +0000, Duncan Brown wrote: >> The last message before it is "switching to clocksource hpet" >> >> Then the panic scrolls by >> >> I've no idea if that counts as later or not > It's unlikely to be a panic related to your hardware clock (HPET > High Precision Event Timer), so it's probably when the kernel is > touching something else on your system. > > The content of the panic is really the only thing that can help. >That's what I figured, but how do I go about getting a copy of it? Most of it has scrolled by when it's finished
On Thu, Dec 03, 2015 at 02:06:48PM +0000, Duncan Brown wrote:> That's what I figured, but how do I go about getting a copy of it? > > Most of it has scrolled by when it's finishedIf it's a server or workstation with a serial console, I suggest connecting it to another computer, set up a serial console, set up the other system to capture the console to a file or something you can examine later. In the el3 and el4 days, I used to use something called 'netconsole' to dump the panic over the wire to a syslog server listening on the same network. It doesn't look like that's available in el7 though. I'm not sure how one captures panics for workstations other than a serial console, if it is too early for kdump to catch the panic. -- Jonathan Billings <billings at negate.org>
Am 03.12.2015 um 15:06 schrieb Duncan Brown <centos2 at duncb.co.uk>:> On 03/12/2015 13:54, Jonathan Billings wrote: >> On Thu, Dec 03, 2015 at 01:44:47PM +0000, Duncan Brown wrote: >>> The last message before it is "switching to clocksource hpet" >>> >>> Then the panic scrolls by >>> >>> I've no idea if that counts as later or not >> It's unlikely to be a panic related to your hardware clock (HPET >> High Precision Event Timer), so it's probably when the kernel is >> touching something else on your system. >> >> The content of the panic is really the only thing that can help. >> > That's what I figured, but how do I go about getting a copy of it? > > Most of it has scrolled by when it's finishedstart for example with a photo (or video and grab the frame where the panic occurs) and - disable grub options like rhgb or quit ... -- LF
Leon Fauster wrote:> Am 03.12.2015 um 15:06 schrieb Duncan Brown <centos2 at duncb.co.uk>: >> On 03/12/2015 13:54, Jonathan Billings wrote: >>> On Thu, Dec 03, 2015 at 01:44:47PM +0000, Duncan Brown wrote: >>>> The last message before it is "switching to clocksource hpet" >>>> >>>> Then the panic scrolls by >>>> >>>> I've no idea if that counts as later or not >>> It's unlikely to be a panic related to your hardware clock (HPET >>> High Precision Event Timer), so it's probably when the kernel is >>> touching something else on your system. >>> >>> The content of the panic is really the only thing that can help. >>> >> That's what I figured, but how do I go about getting a copy of it? >> >> Most of it has scrolled by when it's finishedIn 6, I'd say look at the startup scripts, since it was serialized. With systemd, booting in parallel, I'm not sure. Anyone know if there's a way to *force* systemd to serialize for debugging? mark
On 03/12/2015 14:29, Leon Fauster wrote:> Am 03.12.2015 um 15:06 schrieb Duncan Brown <centos2 at duncb.co.uk>: >> On 03/12/2015 13:54, Jonathan Billings wrote: >>> On Thu, Dec 03, 2015 at 01:44:47PM +0000, Duncan Brown wrote: >>>> The last message before it is "switching to clocksource hpet" >>>> >>>> Then the panic scrolls by >>>> >>>> I've no idea if that counts as later or not >>> It's unlikely to be a panic related to your hardware clock (HPET >>> High Precision Event Timer), so it's probably when the kernel is >>> touching something else on your system. >>> >>> The content of the panic is really the only thing that can help. >>> >> That's what I figured, but how do I go about getting a copy of it? >> >> Most of it has scrolled by when it's finished > > start for example with a photo (or video and grab the frame where > the panic occurs) and - disable grub options like rhgb or quit ... > > -- > LF > > > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centosHere is a couple of pictures, http://i.imgur.com/Vqvqn1H.jpg http://i.imgur.com/WQaz1j9.png Any use?