From: "Georg Schönberger" <g.schoenberger@xortex.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: Martin Steigerwald <martin@lichtvoll.de>,
Jens Axboe <axboe@kernel.dk>,
Linux FS-Devel <linux-fsdevel@vger.kernel.org>,
Jeff Moyer <jmoyer@redhat.com>,
Linux Block mailing list <linux-block@vger.kernel.org>,
XFS mailing list <xfs@oss.sgi.com>
Subject: Re: XFS and nobarrier with SSDs
Date: Mon, 14 Dec 2015 10:34:30 +0000 [thread overview]
Message-ID: <566E9B36.9080509@xortex.com> (raw)
In-Reply-To: <20151214102750.GA29192@infradead.org>
On 2015-12-14 11:27, Christoph Hellwig wrote:
> On Mon, Dec 14, 2015 at 10:18:54AM +0000, Georg Sch?nberger wrote:
>>> Or to phrase it
>>> differently: If nobarrier makes a difference skipping it is not safe.
>> I do not fully understand that sentence, what do you mean by "makes a
>> difference" and "skipping is not safe"?
> The rule of thumb is: if nobarrier makes your workload run faster you
> should not be using it, aka: don't use it.
OK, thanks for clarification.
Should the XFS FAQ be updated?
*http://xfs.org/index.php/XFS_FAQ#Q._Should_barriers_be_enabled_with_storage_which_has_a_persistent_write_cache.3F
next prev parent reply other threads:[~2015-12-14 10:34 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <E127700EFE58FD45BD6298EAC813FA42020D8173@TIGER2010.xortex.local>
[not found] ` <3496214.YTSKClH6pV@merkaba>
[not found] ` <566E6524.6070401@xortex.com>
2015-12-14 8:38 ` XFS and nobarrier with SSDs Martin Steigerwald
2015-12-14 9:58 ` Christoph Hellwig
2015-12-14 10:18 ` Georg Schönberger
2015-12-14 10:27 ` Christoph Hellwig
2015-12-14 10:34 ` Georg Schönberger [this message]
2015-12-14 13:36 ` Christoph Hellwig
2015-12-26 23:44 ` Linda Walsh
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