From: "Jan Beulich" <jbeulich@novell.com>
To: <daniel.stodden@citrix.com>, <Ian.Campbell@eu.citrix.com>,
<jaxboe@fusionio.com>, <annie.li@oracle.com>,
<joe.jin@oracle.com>, <konrad.wilk@oracle.com>,
<KURT.HACKEL@oracle.com>
Cc: <xen-devel@lists.xensource.com>, <greg.marsden@oracle.com>,
<linux-kernel@vger.kernel.org>
Subject: Re: [Xen-devel] [PATCH 0/3] xen-blkback: refactor vbd remove/disconnect.
Date: Wed, 03 Aug 2011 15:53:44 +0100 [thread overview]
Message-ID: <4E396F090200007800073F59@nat28.tlf.novell.com> (raw)
>>> Joe Jin 08/03/11 4:10 AM >>>
>1. start guest with the latest kernel.
>2. attach new block device by xm block-attach in Dom0
>3. mount new disk in guest
>4. execute xm block-detach to detach the block device in dom0 until timeout
>5. try to unmount the disk in guest, umount hung. at here, any IOs to the
>device will hang.
A bogus sequence of operations - an operator in Dom0 shouldn't remove
a device that is still in use in a guest, except as an exceptionasl measure
(and then other bad behavior is to be expected). What's the use case?
Jan
next reply other threads:[~2011-08-03 14:53 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-03 14:53 Jan Beulich [this message]
2011-08-03 20:38 ` Daniel Stodden
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