`<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>FWIW I have not had panics on disk failure. The pool will hang, and often not recover until a reboot -- depending on the disk failure mode. <br><br>I blame sd for this rather than ZFS or FMA, but at the end of the day it is still suboptimal behavior.<br>-- <div>bdha</div></div><div><br>On Jul 11, 2015, at 16:11, Linda Kateley <<a href="mailto:lkateley@kateley.com">lkateley@kateley.com</a>> wrote:<br><br></div><blockquote type="cite"><div>
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<div class="moz-cite-prefix">This really saddens me. To me my
favorite part of solaris was FMA. But happy about the 3008.<br>
<br>
thanks <br>
<br>
linda<br>
<br>
On 7/10/15 12:31 PM, Schweiss, Chip wrote:<br>
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<div>Unfortunately for the past couple years panics on disk
failure has been the norm. All my production systems are
HA with RSF-1, so at least things come back online
relatively quick. There are quite a few open tickets in
the Illumos bug tracker related to mpt_sas related
panics. <br>
<br>
Most of the work to fix these problems has been committed
in the past year, though problems still exist. For
example, my systems are dual path SAS, however, mpt_sas
will panic if you pull a cable instead of dropping a path
to the disks. Dan McDonald is actively working to resolve
this. He is also pushing a bug fix in genunix from
Nexenta that appears to fix a lot of the panic problems.
I'll know for sure in a few months after I see a disk or
two drop if it truly fixes things. Hans Rosenfeld at
Nexenta is responsible for most of the updates to mpt_sas
including support for 3008 (12G SAS).<br>
<br>
</div>
<div>I haven't run any 12G SAS yet, but plan to on my next
build in a couple months. This will be about 300TB using
an 84 disk JBOD. All the code from Nexenta to support the
3008 appears to be in Illumos now, and they fully support
it so I suspect it's pretty stable now. From what I
understand there may be some 12G performance fixes coming
sometime. <br>
<br>
The fault manager is nice when the system doesn't panic.
When it panics, the fault manger never gets a chance to
take action. It is still the consensus that is is better
to run pools without hot spares because there are
situations the fault manager will do bad things. I
witnessed this myself when building a system and the fault
manger replaced 5 disks in a raidz2 vdev inside 1 minute,
trashing the pool. I haven't completely yield to the
"best practice". I now run one hot spare per pool. I
figure with raidz2, the odds of the fault manager causing
something catastrophic is much less possible. <br>
<br>
</div>
<div>-Chip<br>
</div>
<div><br>
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<br>
<br>
On Fri, Jul 10, 2015 at 11:37 AM, Linda Kateley <span dir="ltr"><<a moz-do-not-send="true" href="mailto:lkateley@kateley.com" target="_blank">lkateley@kateley.com</a>></span>
wrote:<br>
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<div> I have to build and maintain my own system. I
usually help others build(i teach zfs and freenas
classes/consulting). I really love fault management in
solaris and miss it. Just thought since it's my system
and I get to choose I would use omni. I have 20+ years
using solaris and only 2 on freebsd. <br>
<br>
I like freebsd for how well tuned for zfs oob. I miss
the network, v12n and resource controls in solaris. <br>
<br>
Concerned about panics on disk failure. Is that common?<br>
<br>
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<div bgcolor="#FFFFFF" text="#000000"> linda
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<div>On 7/9/15 9:30 PM, Schweiss, Chip wrote:<br>
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<div>Linda,<br>
<br>
</div>
I have 3.5 PB running under OmniOS. All my
systems have LSI 2108 HBAs which is
considered the best choice for HBAs. <br>
<br>
Illumos leaves a bit to be desired with
handling faults from disks or SAS problems,
but things under OmniOS have been improving,
much thanks to Dan McDonald and OmniTI. We
have a paid support on all of our production
systems with OmniTI. Their response and
dedication has been very good. Other than
the occasional panic and restart from a disk
failure, OmniOS has been solid. ZFS of
course never has lost a single bit of
information. <br>
<br>
</div>
I'd be curious why you're looking to move,
have there been specific problems under BSD or
ZoL? I've been slowly evaluating FreeBSD ZFS,
but of course the skeletons in the closet
never seem to come out until you do something
big.<br>
<br>
</div>
-Chip<br>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Thu, Jul 9, 2015 at
4:21 PM, Linda Kateley <span dir="ltr"><<a moz-do-not-send="true" href="mailto:lkateley@kateley.com" target="_blank">lkateley@kateley.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">Hey is
there anyone out there running big zfs on
omni?<br>
<br>
I have been doing mostly zol and freebsd for
the last year but have to build a 300+TB box
and i want to come back home to
roots(solaris). Feeling kind of hesitant :)
Also, if you had to do over, is there
anything you would do different.<br>
<br>
Also, what is the go to HBA these days?
Seems like i saw stable code for lsi 3008?<br>
<br>
TIA<br>
<br>
linda<br>
<br>
<br>
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</blockquote>
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<span class=""><font color="#888888">
<pre cols="72">--
Linda Kateley
Kateley Company
Skype ID-kateleyco
<a moz-do-not-send="true" href="http://kateleyco.com" target="_blank">http://kateleyco.com</a>
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