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Subject: Re: stuck on low scrub performance
To: freebsd-fs@freebsd.org
References: <b0dc09d8-3579-f7c0-f72a-3e2ce798f443@gmail.com>
 <8b408926-768b-8df9-e38c-b617cce30b16@gmail.com>
From: Daryl Richards <daryl@isletech.net>
Message-ID: <91c33947-bddc-014e-676d-2a5c3950bb71@isletech.net>
Date: Sun, 22 Jan 2017 11:51:01 -0500
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On 2017-01-22 11:45 AM, Tobias Oberstein wrote:
> FWIW, the issue is gone .. it's scrubbing with 130MB/s now:
>
> [oberstet@bvr-file1 ~/scm/parcit/RA/adr/services]$ zpool status tank
>   pool: tank
>  state: ONLINE
>   scan: scrub in progress since Tue Jan 17 11:13:29 2017
>         55.1T scanned out of 89.4T at 127M/s, 78h42m to go
>         96K repaired, 61.64% done
>
> Note: the pool consists of 4 disk sets (striped) with 6 disks each 
> (RAID-Z2).
Also, FWIW, I also find a scrub starts very slow for the first couple 
hours, then speeds up drastically. I also only have ~20TB so perhaps 
this scales?