From: Isaac Huang <He.Huang@Sun.COM>
To: lustre-devel@lists.lustre.org
Subject: [Lustre-devel] client side reply handling
Date: Tue, 15 Dec 2009 21:51:42 -0500 [thread overview]
Message-ID: <20091216025142.GB1196@sun.com> (raw)
In-Reply-To: <20091216024818.GA1196@sun.com>
On Tue, Dec 15, 2009 at 09:48:18PM -0500, Isaac Huang wrote:
> On Tue, Dec 15, 2009 at 07:01:33PM -0700, Peter Braam wrote:
> > No - buffers can and probably should (because, for example, re-delivery
> > may leaver buffer state undefined) be unlinked from the match list
> > before passing the buffer up to any other layer. Portals/LNET
> > certainly can do this.
>
> Hi Peter, LNet does have a MD option to automatically unlink the
> buffer once it's been exhausted. Duplicated delivery shouldn't cause any
> problem because MD offset is increased locally (i.e. a dup would go
> into a different offset), unless the MD has enabled peers to manage
> offset remotely, which is now true for PTLRPC reply buffers (because
> now early replies and real reply share a same reply buffer).
There was a recent discussion on this topic, under a similar subject:
http://lists.lustre.org/pipermail/lustre-devel/2009-December/003231.html
Isaac
next prev parent reply other threads:[~2009-12-16 2:51 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-09 15:05 [Lustre-devel] client side reply handling Peter Braam
2009-12-15 16:28 ` Yuriy Umanets
2009-12-16 2:01 ` Peter Braam
2009-12-16 2:48 ` Isaac Huang
2009-12-16 2:51 ` Isaac Huang [this message]
2009-12-16 2:55 ` Liang Zhen
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