<html><head></head><body><div>That sounds like a crappy chip/driver combo. Care to share brand so we can avoid the pain?</div><div><br></div><div>I've got a LaCie 2Tb USB3 drive that runs with no issues conected to a Mac. Plugged into my Fedora 24 Dell I see drive issues all over and half the time the unit won't mount spewing errors messages about bad drive IO.</div><div><br></div><div>I plugged it into a USB2 Mac running MacOS and it said it was fine. Format that drive with a Linux install and the new Linux says the drive is bad. Reinstall the Mac and it says it's badd as well. Upgrade the Mac to the latest version and it says the drive is fine.</div><div><br></div><div>I trust the Linux messages.</div><div><br></div><div>On Tue, 2016-11-22 at 15:24 -0500, DJ-Pfulio wrote:</div><blockquote type="cite"><pre>On 11/22/2016 01:27 PM, Chris Fowler wrote:
<blockquote type="cite">
"Turns out Hyper-V replication was using too many resources, causing the
SAN to get upset, and the host would close random connections to the
guest operating systems.
</blockquote>
I've seen similar on a KVM host, but the backup storage is USB3, so I
wouldn't compare. On that system, any USB access of any significance
destroys all I/O across the system completely - disk, USB, network - all
are effectively paused for the time the USB is used. I've tried a few
different methods to solve it. Each has failed, though they were
specific to the same USB chips my system uses. It is an addon card too,
not on the MB using N/S-bridge.
Oddly, a newer system with $50 CPU + $50 MB doesn't have **any** issues
dealing with USB3 traffic. It flows and doesn't appear to impact
anything else at all. Works like we'd expect USB3 to work - have 16TB of
storage array (4x4T) connected via USB3 on that machine. Not bad for
$99, but the array is truly cheap - doesn't support SMART and if the
power goes out, it is left off until someone physically pushes the power
button. No "last state" setting for power-up.
Wish I could just have said that hyper-v was the problem, but can't.
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</pre></blockquote><div><span><pre><pre>-- <br></pre>James P. Kinney III
Every time you stop a school, you will have to build a jail. What you
gain at one end you lose at the other. It's like feeding a dog on his
own tail. It won't fatten the dog.
- Speech 11/23/1900 Mark Twain
http://heretothereideas.blogspot.com/
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