Re: RAID barely usable on my home machine

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On 2013-04-05 10:06, Maik Zumstrull wrote:
> On Fri, Apr 5, 2013 at 2:16 AM, Roger Heflin <rogerheflin@xxxxxxxxx> wrote:
>
>> lspci look like this for the controller:
>> SATA controller: Marvell Technology Group Ltd. Device 9230 (rev 10)
>>
>> 4pt sata3.0 6gbit or is yours a different one?
> Mine looks slightly different (included somewhere in my mail), but
> should be a device in the same family.
>
>> I have the issue also, I have eliminated all smart hits against the
>> disks and no incidents since then.
> Not a great workaround as such, first of all, running SMART against
> your storage is kind of recommended, and secondly, as I said, udisks2
> will also SMART your disks occasionally, which you have to uninstall
> parts of GNOME to get rid of.
This reminds me of an old thread in freebsd-scsi, where a guy with some
SAS disks and a SAS2008 controller would have his disks 'lost' if he
used smartctl on routine, and could reproduce it reliably by spamming a
disk with smartctl -a (but smartctl -i, and something else would not
reproduce it). And he found that to solve it, he can change the "disk
tags" to much lower. I think "disk tags" might be equivalent to the
nr_requests in Linux.

Here is the thread:
http://osdir.com/ml/freebsd-scsi/2011-11/msg00006.html
>> I have seagate 1.5tb drives on mine that had had the issues.
> Suggests it's not something about my drives, as I have WD Red disks.
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