From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 60644] MPT2SAS drops all HDDs when under high I/O
Date: Mon, 13 Jan 2014 17:27:49 +0000
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https://bugzilla.kernel.org/show_bug.cgi?id=60644
--- Comment #37 from Jeff Johnson ---
I can confirm Tommy's observations about disabling PERR and SERR solving the
issue.
The motherboard I am using (Supermicro X8DTH-iF) does not have those exact BIOS
settings to control. In my case the following BIOS changes and kernel command
line arguments eliminated the issue:
MB BIOS: BIOS->Advanced->Advanced Chipset Configuration->North Bridge
Configuration->ASPM=Disabled
Linux boot command line options: pcie_aspm=off disable_msi=1
With these changes a very intense fio run has gone four days without a single
error or issue on a Linux-ZFS filesystem.
Before these changes I could not go four hours without multiple HBAs
disappearing (in my config there are three HBAs). Sometimes the HBAs would
disappear within 15-20 minutes of benchmark runtime.
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