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Date: Thu, 20 Apr 2017 16:46:38 +0300
From: Heikki Lindholm <holindho@saunalahti.fi>
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Subject: Re: Is it needed/possible to fsck under ZFS ?
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20.4.2017 16.42, Manish Jain kirjoitti:
>
> Hi,
>
> I have made a FreeBSD 12-Current (amd64) installation on a single MBR slice ada0s3 (which holds just one partition ada0s3a that maps to both / and the ZFS tank root).
>
> Under UFS, I always used to do manual fsck upon improper shutdown. But I have no idea what to do for ZFS. Is it needed (even possible ?) to fsck for ZFS ? I very much doubt that : ZFS was, as far as I know, designed with data integrity as a central concern. But still I would like to be sure.

"zpool scrub" will read the whole pool and report any errors in "zpool 
status"