From mboxrd@z Thu Jan  1 00:00:00 1970
From: Xing Lin <xinglin@cs.utah.edu>
Subject: Re: When ceph synchronizes journal to disk?
Date: Mon, 04 Mar 2013 21:08:43 -0700
Message-ID: <51356FCB.3020308@cs.utah.edu>
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To: Sage Weil <sage@inktank.com>
Cc: "ceph-devel@vger.kernel.org" <ceph-devel@vger.kernel.org>

No, I am using xfs. The same thing happens even if I specified the 
journal mode explicitly as follows.

         filestore journal parallel = false
         filestore journal writeahead = true

Xing

On 03/04/2013 09:32 AM, Sage Weil wrote:
> Are you using btrfs?  In that case, the journaling is parallel to the fs
> workload because the btrfs snapshots provide us with a stable checkpoint
> we can replay from.  In contrast, for non-btrfs file systems we need to do
> writeahead journaling.