[OmniOS-discuss] OmniOS Panic on high ZFS Write Load

[Rune Tipsmark]

Hi guys,

After having tried various distros as mentioned and after having tried SLC and MLC PCI-E devices as well as SSD disks I think I actually found the issue.

Previously I had a bunch of SATA disks connected to my SAS controller as well as a bunch of SAS disks... now that I removed the SATA disks and only have SAS disks left I have not been able to reproduce the issue (regardless the fact I didn't even use the SAS controller for some tests that crashes). Very weird and what a waste of a few hundred hours of reinstalling/testing, swapping cables, switches, memory, messing with bios settings and what have we.

I now have two stable pools which each write a reasonable ~430 MB/sec with sync=always on without crashing.

Lesson - stay far away from SATA disks on LSI 9207-4i4e

Thanks for all the feedback.

Br,
Rune

-----Original Message-----
From: OmniOS-discuss [mailto:omnios-discuss-bounces at lists.omniti.com] On Behalf Of Dan McDonald
Sent: Thursday, May 15, 2014 7:44 AM
To: omnios-discuss at lists.omniti.com
Subject: Re: [OmniOS-discuss] OmniOS Panic on high ZFS Write Load


On May 15, 2014, at 10:41 AM, Dan McDonald <danmcd at omniti.com> wrote:
> 
> What OmniOS version are you running?  Also, how much memory do you have on this system, and have you done any crazy tunings to increase kernel memory usage?

Sorry, you said you tried this on many versions.

If you can, stick with r151010 (our latest stable) and get a system dump from this box.

It's possible too, as Narayan points out, checking for HW errors is helpful.

Also, I may ask you to reproduce this bug with kernel memory debugging enabled.  If something is using freed memory, that'd be nice to know.  And finally, are you using 3rd-party binary drivers?  Or the native ones in your distro?

Dan

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