Hi, On Mon, Feb 09, 2009 at 09:25:51AM +0100, Peter Luciak wrote: > Hello all, > > I have a 2 node cluster, interconnected via crossed-cable and serial cable. > I noticed that after some time, the serial link went down, with this > message in the kernel log: > > kernel: serial8250: too much work for irq4
First time I hear about this. A kernel problem? > This is on CentOS 5.2 x86_64 with 2.6.18-92.1.13.el5 and > heartbeat-2.1.4-2.1. Has anyone encountered a similar problem? It's a > Fujitsu Siemens RX300 server. More importantly, is it possible to > reestablish the serial link without takeover/heartbeat restart? (I think if > I kill the ttyS0 hbread and hbwrite processes the other node will take > over). No, it won't. Heartbeat can recover from this error. But also because you have another communication link. Thanks, Dejan > > Thanks very much for answers, > Peter > > Here is /proc/interrupts output: > > # cat /proc/interrupts > CPU0 CPU1 CPU2 CPU3 > 0: 1532684436 0 0 0 IO-APIC-edge timer > 1: 904 0 2988 0 IO-APIC-edge i8042 > 4: 7490 0 60869910 0 IO-APIC-edge serial > 8: 1 0 0 0 IO-APIC-edge rtc > 9: 0 0 0 0 IO-APIC-level acpi > 12: 3957 0 24955 0 IO-APIC-edge i8042 > 98: 152335 0 9145347 0 IO-APIC-level > ehci_hcd:usb1, uhci_hcd:usb2 > 106: 0 0 0 0 IO-APIC-level > uhci_hcd:usb3 > 114: 0 0 0 0 IO-APIC-level > uhci_hcd:usb4 > 122: 22 0 0 0 IO-APIC-level > uhci_hcd:usb5 > 130: 5261 0 11382292 0 IO-APIC-level ahci > 138: 1124609169 0 0 0 PCI-MSI eth0 > 146: 41138037 0 0 0 PCI-MSI eth1 > 169: 15451 3060 15725460 291463 IO-APIC-level megasas > NMI: 69963 49649 41985 39739 > LOC: 1532683254 1532683175 1532683085 1532683006 > ERR: 0 > MIS: 0 > > -- > Peter LUCIAK ([email protected]) > IBL Software Engineering, http://www.iblsoft.com/ > Mierov?? 103, 82105 Bratislava, Slovakia > Phone: +421-2-32662111, Fax: +421-2-32662110 > Direct: +421-2-32662175 > _______________________________________________ > Linux-HA mailing list > [email protected] > http://lists.linux-ha.org/mailman/listinfo/linux-ha > See also: http://linux-ha.org/ReportingProblems _______________________________________________ Linux-HA mailing list [email protected] http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
