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Re: [Qemu-trivial] [Qemu-devel] [PATCH 1/2] LUKS: better error message w
From: |
Daniel P . Berrangé |
Subject: |
Re: [Qemu-trivial] [Qemu-devel] [PATCH 1/2] LUKS: better error message when creating too large files |
Date: |
Mon, 22 Jul 2019 10:05:56 +0100 |
User-agent: |
Mutt/1.12.0 (2019-05-25) |
On Sun, Jul 21, 2019 at 09:15:07PM +0300, Maxim Levitsky wrote:
> Currently if you attampt to create too large file with luks you
> get the following error message:
>
> Formatting 'test.luks', fmt=luks size=17592186044416 key-secret=sec0
> qemu-img: test.luks: Could not resize file: File too large
>
> While for raw format the error message is
> qemu-img: test.img: The image size is too large for file format 'raw'
>
>
> The reason for this is that qemu-img checks for errono of the failure,
> and presents the later error when it is -EFBIG
>
> However crypto generic code 'swallows' the errno and replaces it
> with -EIO.
>
> As an attempt to make it better, we can make luks driver,
> detect -EFBIG and in this case present a better error message,
> which is what this patch does
>
> The new error message is:
>
> qemu-img: error creating test.luks: The requested file size is too large
>
> Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1534898
> Signed-off-by: Maxim Levitsky <address@hidden>
> ---
> block/crypto.c | 25 +++++++++++++++++++++----
> 1 file changed, 21 insertions(+), 4 deletions(-)
Reviewed-by: Daniel P. Berrangé <address@hidden>
Regards,
Daniel
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