[Bug 15721] mptsas cannot dectect hotplugged harddisks occasionally

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https://bugzilla.kernel.org/show_bug.cgi?id=15721


kdesai <kashyap.desai@xxxxxxx> changed:

           What    |Removed                     |Added
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                 CC|                            |kashyap.desai@xxxxxxx




--- Comment #8 from kdesai <kashyap.desai@xxxxxxx>  2010-04-23 08:33:58 ---
(In reply to comment #6)
> Created an attachment (id=25987)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=25987) [details]
> fix sata hotplug problem from lsi
> 
> This patch is from lsi. It seems that it makes situation much better. If we
> plug only one disk, it is always found now. (50 times testing passed
> successfully). However, if we plug several disks together, there are still one
> to three disks missing.
LSI has plan to post this patch soon. we are doing more testing on this patch.
We are not seeing this issue(multiple SATA drivers hotplug) in our LAB. If you
can provide me logs with and without debug level = 0x100000 I can provide my
analysis. 
"echo 0x100000 > /sys/modules/mptbase/parameters/mpt_debug_level"

Thanks, Kashyap

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