severity 855463 wishlist
merge 236408 855463
thanks
On Sat, Feb 18, 2017 at 06:13:53PM +0100, G.raud wrote:
> Package: e2fsprogs
> Version: 1.42.12-2+b1
> Severity: normal
>
> e2image tries to seek into an ouput to stdout ("-"), even when it is a
> pipe:
>
> ------
> # LC_ALL=C e2image /dev/mapper/debian-var - | cat >test
> e2image 1.42.12 (29-Aug-2014)
> seek_set: Illegal seek
> ------
>
> According the manpage, only the raw and qcow2 formats require seeking
> into the output.
Actually, the manage states that only the raw mode supports using
stdout:
If image-file is -, then the output of e2image will be sent to
standard output, so that the output can be piped to another
program, such as gzip(1). (Note that this is currently only
supported when creating a raw image file using the -r option, since
the process of creating a normal image file, or QCOW2 image
currently requires random access to the file, which cannot be done
using a pipe. This restriction will hopefully be lifted in a
future version of e2image.)
The fact that e2image doesn't work on "normal" e2image files is a
long-standing short-coming. But note that it's really an obsolete
format. The raw or qcow image formats are actually far more useful,
and the primary use cases of e2image today. The only reason why
"normal" is still used to describe the original e2image format is for
historical reasons.
Cheers,
- Ted
