[Bug 15721] mptsas cannot dectect hotplugged harddisks occasionally

[Bug 15721] mptsas cannot dectect hotplugged harddisks occasionally

[bugzilla-daemon]

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


Andrew Morton <akpm@linux-foundation.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |akpm@linux-foundation.org
          Component|Other                       |SCSI
         AssignedTo|io_other@kernel-bugs.osdl.o |linux-scsi@vger.kernel.org
                   |rg                          |




--- Comment #4 from Andrew Morton <akpm@linux-foundation.org>  2010-04-09 20:54:38 ---
Recategorised to scsi, assigned to Eric.

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[Bug 15721] mptsas cannot dectect hotplugged harddisks occasionally

[bugzilla-daemon]

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





--- Comment #5 from dujun@perabytes.com  2010-04-11 00:50:53 ---
(From update of attachment 25912)
this doesn't proceed to test_unit_ready as the correct hotplug sequence but
directly to the mptsas_free_fw_event.

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[Bug 15721] mptsas cannot dectect hotplugged harddisks occasionally

[bugzilla-daemon]

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





--- Comment #6 from dujun@perabytes.com  2010-04-13 09:15:51 ---
Created an attachment (id=25987)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=25987)
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.

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[Bug 15721] mptsas cannot dectect hotplugged harddisks occasionally

[bugzilla-daemon]

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





--- Comment #7 from Andrew Morton <akpm@linux-foundation.org>  2010-04-13 19:18:03 ---
Please don't send patches via bugzilla - it causes lots of problems with
our usual patch management and review processes.

Please send this patch via email as per Documentation/SubmittingPatches. 
Suitable recipients may be found via scripts/get_maintainer.pl.  Please
also cc myself on the email.

Thanks.

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[Bug 15721] mptsas cannot dectect hotplugged harddisks occasionally

[bugzilla-daemon]

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


kdesai <kashyap.desai@lsi.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |kashyap.desai@lsi.com




--- Comment #8 from kdesai <kashyap.desai@lsi.com>  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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[Bug 15721] mptsas cannot dectect hotplugged harddisks occasionally

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


Alan <alan@lxorguk.ukuu.org.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |alan@lxorguk.ukuu.org.uk
         Resolution|                            |INSUFFICIENT_DATA




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