https://bugzilla.kernel.org/show_bug.cgi?id=60644
Bug ID: 60644
Summary: MPT2SAS drops all HDDs when under high I/O
Product: SCSI Drivers
Version: 2.5
Kernel Version: 3.11
Hardware: x86-64
OS: Linux
Tree: Mainline
Status: NEW
Severity: blocking
Priority: P1
Component: Other
Assignee: scsi_drivers-ot...@kernel-bugs.osdl.org
Reporter: livea...@live.com
Regression: No
I have this issue that refused to be solved no matter what I do . My ASRock
comes with onboard SAS controller (LSI 2308) , since I recieved it always does
this one thing : Drops all HDDs connected to it .
It happens only under heavy IO operations after a few minutes . I can recreate
it easily by running either dd , md5deep or even btrfs scrub .
Kernel locks , can't even shut it down from console and a quick ls
/dev/disk/by-id shows that all the HDDs connected to the SAS controller have
disappeared .
It happens with the stable kernel (3.9 and 3.10.3) and the mainline (3.11-rc2)
as of this day .
It's not a hardware issue , because I installed a Windows Server 2012 on the
same machine with a few HDDs I have laying around and beat the controller to
the ground and it never hanged . So I know it's a Linux-specific issue .
Dmesg logs before and after the issue are attached .
Thank you .
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