I think we would have swapped the cards without varying off the channel.
Possibly a mid-flight I/O hung Linux. That was SuSE8 / Linux 2.4x kernel.
BTW, how do you start/stop the channels?
I see /sys/devices/css0/chp0.2e/status and
/sys/devices/css0/chp0.2e/detach_state
How do I vary on / vary off the channel?
Thanks
Cornelia Huck wrote:
On Sat, 18 Feb 2006 17:53:39 -0800
Ranga Nathan <[EMAIL PROTECTED]> wrote:
That is nice to know. However when we swapped cards some time ago when
Linux was running on bare metal, we had problems. Perhaps we did not
vary off the channel on the linux lpar before we swapped the cards?
Was this with a recent 2.6 kernel? And what was the problem you
encountered? You may vary the affected paths logically offline in Linux
(using the /sys/devices/css0/chp0.<id>/status interface) if you're
paranoid, but there should just be some resource accessibility machine
checks when the paths are becoming available again which Linux should
have no problem handling...
Cornelia
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