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From: John Snow <jsnow@redhat.com>
To: Kevin Wolf <kwolf@redhat.com>
Cc: qemu-devel <qemu-devel@nongnu.org>, qemu-block <qemu-block@nongnu.org>
Subject: [Qemu-devel] qemu-img behavior for locating backing files
Date: Wed, 01 Apr 2015 12:16:57 -0400	[thread overview]
Message-ID: <551C19F9.3020409@redhat.com> (raw)

Kevin, what's the correct behavior for qemu-img and relative paths when 
creating a new qcow2 file?

Example:

(in e.g. /home/qemu/build/ or anywhere not /home: )
qemu-img create -f qcow2 base.qcow2 32G
qemu-img create -f qcow2 -F qcow2 -b base.qcow2 /home/overlay.qcow2

In 1.7.0., this produces a warning that the base object cannot be found 
(because it does not exist at that location relative to overlay.qcow2), 
but qemu-img will create the qcow2 for you regardless.

2.0, 2.1 and 2.2 all will create the image successfully, with no warnings.

2.3-rc1/master as they exist now will emit an error message and create 
no image.

Since this is a change in behavior for the pending release, is this the 
correct/desired behavior?

             reply	other threads:[~2015-04-01 16:17 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-04-01 16:16 John Snow [this message]
2015-04-01 16:28 ` [Qemu-devel] qemu-img behavior for locating backing files Eric Blake
2015-04-02  9:38 ` Kevin Wolf
2015-04-07  0:31   ` John Snow
2015-04-07  8:44     ` Kevin Wolf
2015-04-07 15:55       ` John Snow

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