From: Boaz Harrosh <bharrosh@panasas.com>
To: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: Brent Welch <welch@panasas.com>,
NFS list <linux-nfs@vger.kernel.org>,
open-osd <osd-dev@open-osd.org>
Subject: Re: [PATCH 1/8] pnfs-obj: Remove redundant EOF from objlayout_io_state
Date: Mon, 31 Oct 2011 16:23:53 -0700 [thread overview]
Message-ID: <4EAF2E09.9080000@panasas.com> (raw)
In-Reply-To: <4EAF2521.2010204@panasas.com>
On 10/31/2011 03:45 PM, Boaz Harrosh wrote:
>>
>
> In files-type reads in a "condense" layout. You should be careful
I meant dense layout.
And in that case I think only the MDS knows the actual file-size. Because at
any given time a DS can never tell if it is the last one in the stripe, and
neither can any given client.
> because in striping it is common place to have eof on some DSs because
> of file holes even though there are more bits higher on in the file
> at other DSs. You should check to return back only the answer from the
> highest logical read DS. (Or I'm wrong in my interpretation?)
>
> Thanks
> Boaz
next prev parent reply other threads:[~2011-10-31 23:24 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-28 19:13 [patchset 0/8] pnfs-obj: Move to ORE for v3.2 merge window Boaz Harrosh
2011-10-29 17:24 ` Trond Myklebust
2011-10-29 17:24 ` Trond Myklebust
2011-10-31 17:49 ` Boaz Harrosh
2011-10-31 21:34 ` Boaz Harrosh
2011-10-31 21:34 ` Boaz Harrosh
2011-10-31 21:45 ` [PATCH 1/8] pnfs-obj: Remove redundant EOF from objlayout_io_state Boaz Harrosh
2011-10-31 22:24 ` Trond Myklebust
2011-10-31 22:45 ` Boaz Harrosh
2011-10-31 23:23 ` Boaz Harrosh [this message]
2011-10-31 23:29 ` Trond Myklebust
2011-10-31 23:59 ` Boaz Harrosh
2011-11-01 2:25 ` Trond Myklebust
2011-10-31 21:45 ` [PATCH 2/8] pnfs-obj: Return PNFS_NOT_ATTEMPTED in case of read/write_pagelist Boaz Harrosh
2011-10-31 21:47 ` [PATCH 3/8] pnfs-obj: Get rid of objlayout_{alloc,free}_io_state Boaz Harrosh
2011-10-31 22:03 ` [PATCH 4/8] pnfs-obj: Rename objlayout_io_state => objlayout_io_res Boaz Harrosh
2011-10-31 22:04 ` [PATCH 5/8] pnfs-obj: move to ore 01: ore_layout & ore_components Boaz Harrosh
2011-10-31 22:15 ` [PATCH 6/8] pnfs-obj: move to ore 02: move to ORE Boaz Harrosh
2011-10-31 22:16 ` [PATCH 7/8] pnfs-obj: move to ore 03: Remove old raid engine Boaz Harrosh
2011-10-31 22:16 ` [PATCH 8/8] pnfs-obj: Support for RAID5 read-4-write interface Boaz Harrosh
2011-11-01 17:42 ` [patchset 0/8] pnfs-obj: Move to ORE for v3.2 merge window Boaz Harrosh
2011-11-02 19:01 ` [osd-dev] " Boaz Harrosh
2011-11-02 19:01 ` Boaz Harrosh
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