But wait, theres more... [Fwd: Bug#415123: -R option can't append to a plain file]

But wait, theres more... [Fwd: Bug#415123: -R option can't append to a plain file]

[Nathan Scott]

And a free set of steak knives if you fix this bug...  ;-)

-------- Forwarded Message --------
From: Peter Chubb <peterc@gelato.unsw.edu.au>
Reply-To: Peter Chubb <peterc@gelato.unsw.edu.au>,
415123@bugs.debian.org
To: submit@bugs.debian.org
Subject: Bug#415123: -R option can't append to a plain file
Date: Fri, 16 Mar 2007 19:54:37 +1100

Package: xfsdump
Version: 2.2.38-1

If I use xfsdump to dump to a plain file, interrupt it, then restart
with the -R option, xfsdump complains:

xfsdump: ERROR: media contains valid xfsdump but does not support append

which is misleading: of *course* you can append to a regular file if
there's space on the filesystem.

--
Dr Peter Chubb  http://www.gelato.unsw.edu.au  peterc AT gelato.unsw.edu.au
http://www.ertos.nicta.com.au           ERTOS within National ICT Australia

-- 
Nathan

Re: But wait, theres more... [Fwd: Bug#415123: -R option can't append to a plain file]

[Timothy Shimmin]

Hi,

I'll leave this to Bill. Just a couple of comments.

I don't know if you can call it a "bug", more of a restriction.
There is a layer provided for the I/O using drive_*.c -
i.e drive_scsitape.c, drive_minrmt.c, drive_simple.c (which show up
as a "drive strategy" on output).
As part of the ds_instantiate() interface one typically sets up the d_capabilities
that this drive strategy supports and for files (drive_simple), DRIVE_CAP_APPEND is
not given. What the ramifications for drive_simple (file strategy) are,
I wouldn't know without looking at the code and playing with it.
But I'd call it an RFE :)

--Tim

--On 19 March 2007 8:23:13 AM +1100 Nathan Scott <nscott@aconex.com> wrote:

> And a free set of steak knives if you fix this bug...  ;-)
>
> -------- Forwarded Message --------
> From: Peter Chubb <peterc@gelato.unsw.edu.au>
> Reply-To: Peter Chubb <peterc@gelato.unsw.edu.au>,
> 415123@bugs.debian.org
> To: submit@bugs.debian.org
> Subject: Bug#415123: -R option can't append to a plain file
> Date: Fri, 16 Mar 2007 19:54:37 +1100
>
> Package: xfsdump
> Version: 2.2.38-1
>
> If I use xfsdump to dump to a plain file, interrupt it, then restart
> with the -R option, xfsdump complains:
>
> xfsdump: ERROR: media contains valid xfsdump but does not support append
>
> which is misleading: of *course* you can append to a regular file if
> there's space on the filesystem.
>
> --
> Dr Peter Chubb  http://www.gelato.unsw.edu.au  peterc AT gelato.unsw.edu.au
> http://www.ertos.nicta.com.au           ERTOS within National ICT Australia
>
> --
> Nathan
>

Re: But wait, theres more... [Fwd: Bug#415123: -R option can't append to a plain file]

[Bill Kendall]

Tim summed it up pretty well. I'd agree it's more of
a feature request. In case it isn't clear, the way
to resume a dump to a regular file is to point xfsdump
at a new file, just like incremental dumps go in a
different file than the base dump.

Bill

Timothy Shimmin wrote:
> Hi,
> 
> I'll leave this to Bill. Just a couple of comments.
> 
> I don't know if you can call it a "bug", more of a restriction.
> There is a layer provided for the I/O using drive_*.c -
> i.e drive_scsitape.c, drive_minrmt.c, drive_simple.c (which show up
> as a "drive strategy" on output).
> As part of the ds_instantiate() interface one typically sets up the 
> d_capabilities
> that this drive strategy supports and for files (drive_simple), 
> DRIVE_CAP_APPEND is
> not given. What the ramifications for drive_simple (file strategy) are,
> I wouldn't know without looking at the code and playing with it.
> But I'd call it an RFE :)
> 
> --Tim
> 
> --On 19 March 2007 8:23:13 AM +1100 Nathan Scott <nscott@aconex.com> wrote:
> 
>> And a free set of steak knives if you fix this bug...  ;-)
>>
>> -------- Forwarded Message --------
>> From: Peter Chubb <peterc@gelato.unsw.edu.au>
>> Reply-To: Peter Chubb <peterc@gelato.unsw.edu.au>,
>> 415123@bugs.debian.org
>> To: submit@bugs.debian.org
>> Subject: Bug#415123: -R option can't append to a plain file
>> Date: Fri, 16 Mar 2007 19:54:37 +1100
>>
>> Package: xfsdump
>> Version: 2.2.38-1
>>
>> If I use xfsdump to dump to a plain file, interrupt it, then restart
>> with the -R option, xfsdump complains:
>>
>> xfsdump: ERROR: media contains valid xfsdump but does not support append
>>
>> which is misleading: of *course* you can append to a regular file if
>> there's space on the filesystem.
>>
>> -- 
>> Dr Peter Chubb  http://www.gelato.unsw.edu.au  peterc AT 
>> gelato.unsw.edu.au
>> http://www.ertos.nicta.com.au           ERTOS within National ICT 
>> Australia
>>
>> -- 
>> Nathan
>>
> 
> 
>