Skip site navigation (1)Skip section navigation (2)
Date:      Wed, 21 May 2008 09:33:41 +1000
From:      Andrew Snow <andrew@modulus.org>
To:        freebsd-scsi@freebsd.org
Cc:        d@delphij.net
Subject:   Re: Very poor performance from Dell/LSI Logic SAS 3000 series SATA/SAS RAID controller FreeBSD 6.3
Message-ID:  <48335FD5.3000800@modulus.org>
In-Reply-To: <4833595D.1070409@delphij.net>
References:  <4832C397.3090004@calorieking.com> <4832E0EE.3030402@samsco.org>	<4832E6C2.7040205@calorieking.com> <4833483B.4030208@modulus.org> <4833595D.1070409@delphij.net>

next in thread | previous in thread | raw e-mail | index | archive | help
Xin LI wrote:
> I believe that data corruption can happen on every place if writing
> cache is lost, it's not an UFS-specific feature :)

ZFS has the promise of not requirring safe hardware write-caches due to 
its parity data and intent log.

 From my understanding, it can promise that a data block has been 
written completely and safely, and that filesystem metadata is not 
corrupted, but out-of-order writes could still happen.

- Andrew




Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?48335FD5.3000800>