From: Jamie Lokier <jamie@shareable.org>
To: Christoph Hellwig <hch@lst.de>
Cc: "Richard W.M. Jones" <rjones@redhat.com>, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH VERSION 3] Disk image exclusive and shared locks.
Date: Thu, 17 Dec 2009 15:38:57 +0000 [thread overview]
Message-ID: <20091217153857.GH24967@shareable.org> (raw)
In-Reply-To: <20091217105345.GB17205@lst.de>
Christoph Hellwig wrote:
> If you want to provide
> protection against mounting the image on the host or scribbling over it
> using mkfs you need to open the block device node with O_EXCL on Linux
> as that's the mechanisms most tools and the filesystem code us for
> exclusion.
Due to that I do suggest opening block devices with O_EXCL when
exclusive locking is requested.
-- Jamie
prev parent reply other threads:[~2009-12-17 15:39 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-15 16:42 [Qemu-devel] [PATCH VERSION 3] Disk image exclusive and shared locks Richard W.M. Jones
2009-12-15 18:02 ` Anthony Liguori
2009-12-15 18:09 ` Richard W.M. Jones
2009-12-15 18:45 ` Anthony Liguori
2009-12-15 18:33 ` Jamie Lokier
2009-12-15 23:26 ` Jamie Lokier
2009-12-16 10:37 ` Kevin Wolf
2009-12-17 13:26 ` Jamie Lokier
2009-12-17 10:53 ` Christoph Hellwig
2009-12-17 11:06 ` Richard W.M. Jones
2009-12-17 15:38 ` Jamie Lokier [this message]
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=20091217153857.GH24967@shareable.org \
--to=jamie@shareable.org \
--cc=hch@lst.de \
--cc=qemu-devel@nongnu.org \
--cc=rjones@redhat.com \
/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.