From: Austin S Hemmelgarn <ahferroin7@gmail.com>
To: "Pali Rohár" <pali.rohar@gmail.com>, "Jan Kara" <jack@suse.cz>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Linux UDF support
Date: Mon, 25 Aug 2014 08:45:13 -0400 [thread overview]
Message-ID: <53FB2FD9.7060406@gmail.com> (raw)
In-Reply-To: <201408241446.47042@pali>
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On 2014-08-24 08:46, Pali Rohár wrote:
> Hi,
>
> I would like to know what is state of linux UDF driver. It is
> experimental or is now suitable for storing data?
>
I know that read support works for every version I have tested, but I've
only tested it reading data from DVD's and Blu-Ray discs, so I don't
know how well it works for other purposes.
> According to wikipedia [1] UDF has open specification format and
> can be used also for HDDs (not only optical discs).
>
> In OS support table is written that all major and other minor OSs
> support UDF FS (without needs for additional programs).
>
> So it looks like UDF is good candidate for multi OS filesystem.
> Are there any disadvantages for using UDF on e.g USB flash disk?
> (when I want read/write support on Linux, Windows 7 and Mac OS X)
If you are going to go that way, make sure to use the Spared Build, as
otherwise you will run in to the same media wear-out issues that NTFS
and FAT have. Also, keep in mind that pre-Vista Windows and pre-10.4
OSX don't have very good support for the newer formats.
> Because lot of manuals say that FAT32 (or NTFS) is only one
> solution for using USB flash disk on more OS.
>
> On wikipedia there is one note about linux: Write support is only
> up to UDF version 2.01. Is this restriction still valid?
I do know that we support reading UDF 2.60 (I've used linux to read
Blu-Ray discs), but I have no idea about write support for versions
above 2.01.
> What will happen if I try to mount FS with UDF version 2.60 in
> R/W mode on linux? It will fallback to R/O mode? Or newly written
> files will be in previous (2.01) versions?
>
> And last question: Is there some fsck tool for UDF? Or at least
> tool which print if FS is in inconsistent state?
Most Linux distributions have a package called udftools, the upstream
URL given by portage is http://sf.net/projects/linux-udf/
>
> [1] - http://en.wikipedia.org/wiki/Universal_Disk_Format
>
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next prev parent reply other threads:[~2014-08-25 12:45 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-24 12:46 Linux UDF support Pali Rohár
2014-08-25 12:45 ` Austin S Hemmelgarn [this message]
2014-08-25 13:24 ` Pali Rohár
2014-08-25 14:05 ` Austin S Hemmelgarn
2014-08-25 21:44 ` Pali Rohár
2014-08-26 9:05 ` Jan Kara
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