From: "Richard W.M. Jones" <rjones@redhat.com>
To: Andreas Dilger <adilger@dilger.ca>
Cc: linux-ext4@vger.kernel.org
Subject: Re: Create ext2 filesystem from a directory
Date: Wed, 20 Feb 2019 07:57:36 +0000 [thread overview]
Message-ID: <20190220075736.GE12500@redhat.com> (raw)
In-Reply-To: <A7D7D6A2-E789-4175-9ABC-E35774D5DA2F@dilger.ca>
On Tue, Feb 19, 2019 at 10:31:24PM -0800, Andreas Dilger wrote:
> On Feb 19, 2019, at 12:03 AM, Richard W.M. Jones <rjones@redhat.com> wrote:
> >
> >
> > This might interest/disgust/shock/scare(?!) people on this list:
> >
> > $ time ./nbdkit --filter=partition -U - linuxdisk . partition=1 --run 'qemu-img convert $nbd /var/tmp/ext2fs.img'
> >
> > real 0m1.314s
> > user 0m0.424s
> > sys 0m0.889s
> >
> > $ ls -lh /var/tmp/ext2fs.img
> > -rw-r--r--. 1 rjones rjones 351M Feb 19 07:44 /var/tmp/ext2fs.img
> >
> > Code here:
> >
> > https://github.com/rwmjones/nbdkit/commit/6e7908c828e60f082d84d866070fe8406e6f2b04
>
> How does this compare to "mke2fs -d <source_dir>"?
Wow, good question. I was completely unaware of this option until
now, but it'll make the implementation massively simpler. (We still
need the linuxdisk plugin.)
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
virt-df lists disk usage of guests without needing to install any
software inside the virtual machine. Supports Linux and Windows.
http://people.redhat.com/~rjones/virt-df/
prev parent reply other threads:[~2019-02-20 7:57 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-19 8:03 Create ext2 filesystem from a directory Richard W.M. Jones
2019-02-20 0:44 ` Theodore Y. Ts'o
2019-02-20 0:55 ` Richard W.M. Jones
2019-02-20 6:31 ` Andreas Dilger
2019-02-20 7:57 ` Richard W.M. Jones [this message]
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