Bodo Stroesser [bstroesser@xxxxxxxxxxxxxxxxxxx] wrote:
> Hi James,
>
> disrupting a working FC connection makes my i386 SMP server
> (2.6.12.2) freeze just one or two seconds after this.
> I'm normally using lpfc_nodev_tmo = 1. When I change this to the
> default value of 35, the system stalls about 36 seconds after
> disruption. So I guess, the problem is caused by nodev_tmo
> expiring.
> I activated the nmi_watchdog, but no output.
>
> What can I do to analyze this problem?
Does changing the timeout for a scsi device also alter the problem. In the
past people have seen issues of the nodev_tmo expiring near the scsi
timeout. This past cases lead to devices being offlined, but may this
could be causing a different symptom on your system.
You can change the timeout for the device by echoing a higher value into
/sys/bus/scsi/devices/${nexus}/timeout.
Is this a full system freeze or only the controlling console?
-andmike
--
Michael Anderson
andmike@xxxxxxxxxx
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