Date: Thu, 04 Dec 2014 20:25:26 +0000 From: Steven Hartland <killing@multiplay.co.uk> To: freebsd-fs@freebsd.org Subject: Re: ASHIFT=13 by default. Message-ID: <5480C336.8020901@multiplay.co.uk> In-Reply-To: <CACpH0Mc%2Bs9xwjNyrAPCh3%2BzxSAgr396h7jJGWxah7Zhx4CFyRg@mail.gmail.com> References: <CACpH0Mc%2Bs9xwjNyrAPCh3%2BzxSAgr396h7jJGWxah7Zhx4CFyRg@mail.gmail.com>
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If thats the case the underlying storage will be reporting a logical block size of 8k. Assuming that's the case then this is expected / correct behavior. On 04/12/2014 19:05, Zaphod Beeblebrox wrote: > So... I think I answered at least a small part of my confusion with the > test ZFS datasets. I created them with 'zpool create vrx raidz > /dev/zvol/*' ... and it would appear that the default behavior for this is > to assign ASHIFT to be 13 ... which makes these test pools rater > unrepresentative of ordinary zfs pools. > > That means that many people using test ZFS pools are testing with 8k blocks > (not even just 4k blocks). While I can immediately understand what I need > to do to get a representative test, I'm posting because other people may > have been similarly confused. > _______________________________________________ > freebsd-fs@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-fs > To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org"
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