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From: Olaf Weber <olaf@sgi.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: Ben Myers <bpm@sgi.com>, tinguely@sgi.com, xfs@oss.sgi.com
Subject: Re: [RFC] Unicode/UTF-8 support for XFS
Date: Mon, 15 Sep 2014 09:16:24 +0200	[thread overview]
Message-ID: <54169248.1090105@sgi.com> (raw)
In-Reply-To: <20140912205528.GB11717@infradead.org>

On 12-09-14 22:55, Christoph Hellwig wrote:
> On Fri, Sep 12, 2014 at 01:55:35PM +0200, Olaf Weber wrote:
>> I looked up those discussions in the archives.  For example, here's
>> Christoph about rejecting filenames if they're not well-formed unicode.
>>     http://marc.info/?l=linux-fsdevel&m=120876935526856&w=2
>> And Jamie Lokier making a similar point:
>>     http://oss.sgi.com/archives/xfs/2008-04/msg01263.html
>
> And I might now disagree with my past self.  While non-ut8 characters
> are perfectly valid unix filenames, and I think everyones life is easier
> if we generally stay out of the utf8 business it seems that for this
> particular use case (shared filesystem with Windows, right) just
> accepting utf8 should be fine.  ZFS is doing, MacOS X apparently is,
> and NFSv4 requires it, although as far as I know most implementations
> ignore that requirement.
>

One issue is working in environments that are not UTF-8 clean.  For example, 
unpacking a tarball with non-UTF-8 filenames in it. The names would have to 
be transcoded, which is only really possible if you know the original 
character set. And if the filesystem flat out rejects non-UTF-8 filenames, 
then you'd be unable to unpack the tarball at all.

-- 
Olaf Weber                 SGI               Phone:  +31(0)30-6696796
                            Veldzigt 2b       Fax:    +31(0)30-6696799
Technical Lead             3454 PW de Meern  Vnet:   955-6796
Storage Software           The Netherlands   Email:  olaf@sgi.com

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  reply	other threads:[~2014-09-15  7:16 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-09-11 20:37 [RFC] Unicode/UTF-8 support for XFS Ben Myers
2014-09-11 20:40 ` [PATCH 1/9] xfs: return the first match during case-insensitive lookup Ben Myers
2014-09-11 20:41 ` [PATCH 2/9] xfs: rename XFS_CMP_CASE to XFS_CMP_MATCH Ben Myers
2014-09-11 20:42 ` [PATCH 3/9] xfs: add xfs_nameops.normhash Ben Myers
2014-09-11 20:43 ` [PATCH 4/9] xfs: change interface of xfs_nameops.normhash Ben Myers
2014-09-11 20:46 ` [PATCH 5/9] xfs: add a superblock feature bit to indicate UTF-8 support Ben Myers
2014-09-11 20:47 ` [PATCH 6/9] xfs: add unicode character database files Ben Myers
2014-09-11 20:48 ` [PATCH 7/9] xfs: add trie generator and supporting code for UTF-8 Ben Myers
2014-09-11 20:49 ` [PATCH 8/9] xfs: add xfs_nameops for utf8 and utf8+casefold Ben Myers
2014-09-11 20:50 ` [PATCH 9/9] xfs: apply utf-8 normalization rules to user extended attribute names Ben Myers
2014-09-11 20:51 ` [PATCH 01/13] libxfs: return the first match during case-insensitive lookup Ben Myers
2014-09-11 20:52 ` [PATCH 02/13] libxfs: rename XFS_CMP_CASE to XFS_CMP_MATCH Ben Myers
2014-09-11 20:53 ` [PATCH 03/13] libxfs: add xfs_nameops.normhash Ben Myers
2014-09-11 20:55 ` [PATCH 04/13] libxfs: change interface of xfs_nameops.normhash Ben Myers
2014-09-11 20:56 ` [PATCH 05/13] libxfs: add a superblock feature bit to indicate UTF-8 support Ben Myers
2014-09-11 20:57 ` [PATCH 06/13] xfsprogs: add unicode character database files Ben Myers
2014-09-11 20:59 ` [PATCH 07/13] libxfs: add trie generator and supporting code for UTF-8 Ben Myers
2014-09-11 21:00 ` [PATCH 08/13] libxfs: add xfs_nameops for utf8 and utf8+casefold Ben Myers
2014-09-11 21:01 ` [PATCH 09/13] libxfs: apply utf-8 normalization rules to user extended attribute names Ben Myers
2014-09-11 21:02 ` [PATCH 10/13] xfsprogs: add utf8 support to growfs Ben Myers
2014-09-11 21:03 ` [PATCH 11/13] xfsprogs: add utf8 support to mkfs.xfs Ben Myers
2014-09-11 21:04 ` [PATCH 12/13] xfsprogs: add utf8 support to xfs_repair Ben Myers
2014-09-11 21:06 ` [PATCH 13/13] xfsprogs: add a preliminary test for utf8 support Ben Myers
2014-09-12 10:02 ` [RFC] Unicode/UTF-8 support for XFS Dave Chinner
2014-09-12 11:55   ` Olaf Weber
2014-09-12 20:55     ` Christoph Hellwig
2014-09-15  7:16       ` Olaf Weber [this message]
2014-09-16 20:54         ` Dave Chinner
2014-09-16 21:02           ` Christoph Hellwig
2014-09-16 21:42             ` Ben Myers
2014-09-12 17:45   ` Josef 'Jeff' Sipek
2014-09-12 20:53   ` Christoph Hellwig

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