All of lore.kernel.org
 help / color / mirror / Atom feed
From: Gerd Hoffmann <kraxel@redhat.com>
To: qemu-devel@nongnu.org
Cc: Gerd Hoffmann <kraxel@redhat.com>
Subject: [Qemu-devel] [PULL 2/3] usb: add storage hotplug documentation
Date: Tue, 12 Jul 2016 10:48:09 +0200	[thread overview]
Message-ID: <1468313290-14308-3-git-send-email-kraxel@redhat.com> (raw)
In-Reply-To: <1468313290-14308-1-git-send-email-kraxel@redhat.com>

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1466667901-1341-1-git-send-email-kraxel@redhat.com
---
 docs/usb-storage.txt | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/docs/usb-storage.txt b/docs/usb-storage.txt
index c5a3866..fbc1f2e 100644
--- a/docs/usb-storage.txt
+++ b/docs/usb-storage.txt
@@ -40,6 +40,18 @@ numbers must be continuous, i.e. for three devices you must use 0+1+2.
 The 0+1+5 numbering from the "usb-uas" example isn't going to work
 with "usb-bot".
 
+Starting with qemu version 2.7 usb-bot and usb-uas devices can be
+hotplugged.  In the hotplug case they are added with "attached =
+false" so the guest will not see the device until the "attached"
+property is explicitly set to true.  That allows to attach one or more
+scsi devices before making the device visible to the guest, i.e. the
+workflow looks like this:
+
+   (1) device-add usb-bot,id=foo
+   (2) device-add scsi-{hd,cd},bus=foo.0,lun=0
+   (2b) optionally add more devices (luns 1 ... 15).
+   (3) scripts/qmp/qom-set foo.attached = true
+
 enjoy,
   Gerd
 
-- 
1.8.3.1

  parent reply	other threads:[~2016-07-12  8:48 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-07-12  8:48 [Qemu-devel] [PULL 0/3] usb: misc fixes Gerd Hoffmann
2016-07-12  8:48 ` [Qemu-devel] [PULL 1/3] nec-usb-xhci: set the device state to USB_STATE_DEFAULT Gerd Hoffmann
2016-07-12  8:48 ` Gerd Hoffmann [this message]
2016-07-12  8:48 ` [Qemu-devel] [PULL 3/3] xen-usb: Fix 32bit build Gerd Hoffmann
2016-07-12 11:34 ` [Qemu-devel] [PULL 0/3] usb: misc fixes Peter Maydell

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=1468313290-14308-3-git-send-email-kraxel@redhat.com \
    --to=kraxel@redhat.com \
    --cc=qemu-devel@nongnu.org \
    /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.