On Saturday, 2011-04-23 at 19:27:38 +0100, Ian Campbell wrote: > > > > Were you doing anything when it hung or was the system just > > > > running in a steady state? > > > Well, 35 minutes ago I had another hang. Same symptoms: connecting > > > directly a keyboard and monitor, there is no reaction when > > > pressing any key (black screen); loss of connectivity to the dom0 > > > and domUs. > > > > > > Additionally I can comment that this time the crash occurred when > > > I was doing an aptitude update/upgrade in the dom0 and the domUs. > > > I can also comment that the disk activity LED was constantly on > > > (not flashing). > > > > > > After hard reset it seems that something was unconscious in one of > > > the RAIDs, and is currently syncing. > > > > > > In /var/log/messages there is no evidence of any particular event > > > from the previous boot. The same in kern.log and syslog. > If the disk controller has gone funny it pretty likely that whatever > log messages were generated never made it onto the disk. > > Here I found a thread [1] with a problem quite like this (although > > in my case the hardware is different: A8V-MX motherboard and AMD > > Athlon 64 Processor 3500+) in the xen-users mailing list. And > > another thread [2] which is derived from the above. > > > > I'll try using "cpuidle=off" or "max_cstate=1" at xen cmdline in > > /boot/grub/grub.conf. > > It's probably worth trying cpuidle=off but it looks like the > max_cstate=1 thing is Intel specific. It's not clear to me in either > case if the root cause of the issue this fixes is a h/w or s/w issue. Using "cpuidle=off" and xen-hypervisor-4.0-amd64 package had no effect. After an uptime of 20:26:44, everything became frozen again. Now I'm trying with the "max_cstate=1" option. This time there was no visual evidence in the disk activity LED when the problem occurred, but I do not see revealing information in system logs. > Do you have irqbalanced installed/running? No, I'm not using irqbalance. This is a uniprocessor system (AMD Athlon(tm) 64 Processor 3500+ with A8V-MX motherdoard). Thanks for your reply. Regards, Daniel -- Daniel Bareiro - GNU/Linux registered user #188.598 Proudly running Debian GNU/Linux with uptime: 18:46:34 up 1 day, 4:43, 10 users, load average: 0.01, 0.05, 0.01
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