From: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
To: Lei Yang <lya755@ece.northwestern.edu>
Cc: linux-kernel@vger.kernel.org
Subject: Re: loopback on block device
Date: Thu, 28 Oct 2004 01:31:29 +0100 [thread overview]
Message-ID: <20041028003129.GL24336@parcelfarce.linux.theplanet.co.uk> (raw)
In-Reply-To: <417FE922.7080009@ece.northwestern.edu>
On Wed, Oct 27, 2004 at 01:29:54PM -0500, Lei Yang wrote:
> >Here is a question for loopback device. As far as I understand, the
> >loopback device is used to mount files as if they were block devices.
> >
> >Then Why I could do "losetup -e XOR /dev/loop0 /dev/ram0" ? Notice
> >that ram0 is not mounted anywhere and does not have a filesystem on
> >it. I've tried that command and there seems to be no error. I got
> >confused and looked into loop.c, it seems to me that a loopback device
> >should be associated with a "backing file", why would it work on a
> >block device anyway?
Because block device is a file.
next prev parent reply other threads:[~2004-10-28 0:34 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-27 18:20 loopback on block device Lei Yang
2004-10-27 18:29 ` Lei Yang
2004-10-28 0:31 ` Al Viro [this message]
2004-10-27 18:58 ` linux-os
2004-10-27 19:42 ` Lei Yang
2004-10-28 9:48 ` Helge Hafting
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20041028003129.GL24336@parcelfarce.linux.theplanet.co.uk \
--to=viro@parcelfarce.linux.theplanet.co.uk \
--cc=linux-kernel@vger.kernel.org \
--cc=lya755@ece.northwestern.edu \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.