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From: Max Reitz <mreitz@redhat.com>
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Date: Tue, 5 Jul 2016 19:37:12 +0200
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Subject: Re: [Qemu-devel] [PATCH 0/2] qcow2: Avoid making the L1 table too
 big
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From: Max Reitz <mreitz@redhat.com>
To: qemu-block@nongnu.org
Cc: qemu-devel@nongnu.org, Kevin Wolf <kwolf@redhat.com>
Message-ID: <7bc2bb03-7244-ed8a-91fd-c94b1e3ebe0f@redhat.com>
Subject: Re: [PATCH 0/2] qcow2: Avoid making the L1 table too big
References: <20160615153630.2116-1-mreitz@redhat.com>
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On 15.06.2016 17:36, Max Reitz wrote:
> See https://bugs.launchpad.net/qemu/+bug/1592590 for a bug report.
>=20
> Reproducer:
>=20
> $ ./qemu-img create -f qcow2 test.qcow2 1M
> Formatting 'test.qcow2', fmt=3Dqcow2 size=3D1048576 encryption=3Doff
> cluster_size=3D65536 lazy_refcounts=3Doff refcount_bits=3D16
> $ ./qemu-img resize test.qcow2 100000T
> Image resized.
> $ ./qemu-img info test.qcow2
> qemu-img: Could not open 'test.qcow2': Active L1 table too large
>=20
> After this series:
>=20
> $ ./qemu-img resize test.qcow2 100000T
> qemu-img: Error resizing image: File too large
>=20
>=20
> Max Reitz (2):
>   qemu-img: Use strerror() for generic resize error
>   qcow2: Avoid making the L1 table too big
>=20
>  block/qcow2-cluster.c | 2 +-
>  qemu-img.c            | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)

Applied to my block branch.

Max


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