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Re: v0.80.4 Firefly released

To: Sage Weil <sage@xxxxxxxxxxx>
Subject: Re: v0.80.4 Firefly released
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Wed, 16 Jul 2014 02:22:26 -0700
Cc: ceph-devel@xxxxxxxxxxxxxxx, xfs@xxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <alpine.DEB.2.00.1407151634250.21336@xxxxxxxxxxxxxxxxxx>
References: <alpine.DEB.2.00.1407151634250.21336@xxxxxxxxxxxxxxxxxx>
User-agent: Mutt/1.5.23 (2014-03-12)
On Tue, Jul 15, 2014 at 04:45:59PM -0700, Sage Weil wrote:
> This Firefly point release fixes an potential data corruption problem
> when ceph-osd daemons run on top of XFS and service Firefly librbd
> clients.  A recently added allocation hint that RBD utilizes triggers
> an XFS bug on some kernels (Linux 3.2, and likely others) that leads
> to data corruption and deep-scrub errors (and inconsistent PGs).  This
> release avoids the situation by disabling the allocation hint until we
> can validate which kernels are affected and/or are known to be safe to
> use the hint on.

I've not really seen an report for that on the XFS list, could it be
that you're running into the issue fixed by

 "xfs: Use preallocation for inodes with extsz hints"

(commit aff3a9edb7080f69f07fe76a8bd089b3dfa4cb5d)?

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