How metadata is committed only after data? Is there any other file system feature? Because write back mode does not preserve it?
Rakesh
Rakesh
From: Dave Chinner
Sent: 07-07-2015 05:59
To: Rakesh Patel
Cc: xfs@xxxxxxxxxxx
Subject: Re: regarding journaling mode
> Hi,
>
> I come to know XFS is using writeback journaling mode.
Can you explain how you came to that conclusion?
> As per the
> journaling guide, writeback is unsafe which does not preserve data and
> metadata write synchronization.
What journalling guide would that be? Please quote your sources when
asking questions.
> I really want to know reason behind to choose writeback mode for journaling
> in XFS.
Metadata updates after data IO completion are used instead of
ordering data writeback operations through the journal.
Cheers,
Dave.
--
Dave Chinner
david@xxxxxxxxxxxxx
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