qemu-devel.nongnu.org archive mirror
 help / color / mirror / Atom feed
From: Kevin Wolf <kwolf@redhat.com>
To: Alberto Garcia <berto@igalia.com>
Cc: qemu-devel@nongnu.org, qemu-block@nongnu.org,
	Max Reitz <mreitz@redhat.com>
Subject: Re: [Qemu-devel] [PATCH 1/3] block: Allow x-blockdev-del on a BB with a monitor-owned BDS
Date: Tue, 9 Feb 2016 11:32:20 +0100	[thread overview]
Message-ID: <20160209103220.GC8554@noname.redhat.com> (raw)
In-Reply-To: <7bfce913f68d95284746e7cf3693703f5361b26f.1454940776.git.berto@igalia.com>

Am 08.02.2016 um 15:14 hat Alberto Garcia geschrieben:
> When x-blockdev-del is performed on a BlockBackend that has inserted
> media it will only succeed if the BDS doesn't have any additional
> references.
> 
> The only problem with this is that if the BDS was created separately
> using blockdev-add then the backend won't be able to be destroyed
> unless the BDS is ejected first. This is an unnecessary restriction.
> 
> Now that we have a list of monitor-owned BDSs we can allow
> x-blockdev-del to work in this scenario if the BDS has exactly one
> extra reference and that reference is from the monitor.
> 
> Signed-off-by: Alberto Garcia <berto@igalia.com>

This means that what you created with two blockdev-add commands would be
destroyed with a single blockdev-del command. I think we all agreed that
blockdev-add and blockdev-del should always come in pairs.

Kevin

  parent reply	other threads:[~2016-02-09 10:32 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-02-08 14:14 Alberto Garcia
2016-02-08 14:14 ` [Qemu-devel] [PATCH 2/3] iotests: Update test 139 after the changes in x-blockdev-del Alberto Garcia
2016-02-09 15:36   ` Eric Blake
2016-02-09 15:44     ` Alberto Garcia
2016-02-08 14:14 ` [Qemu-devel] [PATCH 3/3] block: Update the x-blockdev-del documentation Alberto Garcia
2016-02-09 15:38   ` Eric Blake
2016-02-09 10:32 ` Kevin Wolf [this message]
2016-02-09 10:47   ` [Qemu-devel] [PATCH 1/3] block: Allow x-blockdev-del on a BB with a monitor-owned BDS Alberto Garcia
2016-02-09 15:34 ` Eric Blake
2016-02-09 15:39   ` Alberto Garcia

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=20160209103220.GC8554@noname.redhat.com \
    --to=kwolf@redhat.com \
    --cc=berto@igalia.com \
    --cc=mreitz@redhat.com \
    --cc=qemu-block@nongnu.org \
    --cc=qemu-devel@nongnu.org \
    --subject='Re: [Qemu-devel] [PATCH 1/3] block: Allow x-blockdev-del on a BB with a monitor-owned BDS' \
    /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

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).