zpool scrub speed

Steve Costaras stevecs at chaven.com
Fri May 20 10:16:46 EDT 2011

Thanks, basically what I was looking for in zpool history was mainly create; add & destroy histories.

zpool history | egrep "create|add|destroy"

Does that narrow it down enough? 

with zdb -v being as large as you say, that lends further belief (along with what you posted already) that your system is /highly/ fragmented. 

can you post a zpool status -v 

And what type of drives are these (i.e. are they 4KiB sector sized drives internally?)


-----Original Message-----
From: Nils Bausch [mailto:nils.bausch at googlemail.com]
Sent: Friday, May 20, 2011 04:04 AM
To: 'zfs-discuss'
Subject: Re: zpool scrub speed

I can neither show zpool history nor zdb -v as the both are too large.
The first one is around 13000 lines long and the other one more than a
million lines and rising.
@Uncle Stoatwarbler: thank you for the tip, yet another xtop version I
did not know about and will definitely be put to my tools list.
@Brian Behlendorf: How can I take a look at zfs_scan_idle and how
would I be able to modify it?

Many thanks to all your help and suggestions ;)


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