How to speed up slow zpool scrub?

Andriy Gapon avg at FreeBSD.org
Fri Apr 29 14:38:41 UTC 2016


On 29/04/2016 17:28, Ronald Klop wrote:
> Just like UFS makes an assumption about correct memory and correct disks?
> 
> ECC helps ZFS as much as ECC helps UFS.
> And without ECC ZFS provides more failsafes than UFS. But nothing is perfect.
> You guys make it sound like ZFS has no added benefits if you don't use ECC,
> which is not true.
> 
> UFS < ZFS < ZFS+ECC
> And UFS+ECC is somewhere in between probably.
> As long as people understand the risks/benefits things are ok.

One thing to keep in mind is that ZFS on-disk structures are much more complex
than those of UFS.  It is much harder to recover from some ZFS failure modes.
(And there is no zfsck...)

-- 
Andriy Gapon


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