From owner-freebsd-fs@freebsd.org  Wed Apr 27 04:46:27 2016
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From: Andy Farkas <andyf@andyit.com.au>
To: "'PK1048'" <paul@pk1048.com>
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Subject: RE: How to speed up slow zpool scrub?
Date: Wed, 27 Apr 2016 14:39:43 +1000
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> -----Original Message-----
> From: PK1048 [mailto:paul@pk1048.com]
> Sent: Wednesday, 27 April 2016 12:34 PM
> To: Andy Farkas <andyf@andyit.com.au>
> Cc: freebsd-fs@freebsd.org
> Subject: Re: How to speed up slow zpool scrub?
>
> ...
> Scrubs (and resilver) operations are essentially all random I/O. Those
> drives are low end, low performance, desktop drives.

Yes, the system is an old low end, low performance desktop. That was
my point, that it took 25 hours to scrub 7.52T and not 4 days like the
OP is saying.

-andyf



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