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Re: [Qemu-devel] [Bug 1707297] [NEW] qemu became more picky parsing -m o
From: |
Eric Blake |
Subject: |
Re: [Qemu-devel] [Bug 1707297] [NEW] qemu became more picky parsing -m option |
Date: |
Mon, 31 Jul 2017 07:39:13 -0500 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1 |
On 07/31/2017 03:34 AM, Markus Armbruster wrote:
> John Florian <address@hidden> writes:
>
>> Public bug reported:
>>
>> With qemu-kvm-2.9.0-3.fc26.x86_64 I am no longer to specify the memory
>> size using something like "-m 1.00000GiB" but with qemu-
>> kvm-2.7.1-7.fc25.x86_64 I could without any problem. I now get an error
>> message like:
>>
>> qemu-system-x86_64: -m 1.00000GiB: Parameter 'size' expects a non-negative
>> number below 2^64
>> Optional suffix k, M, G, T, P or E means kilo-, mega-, giga-, tera-, peta-
>> and exabytes, respectively.
>>
>>
>> Is this expected or a regression?
>
> We recognize suffix "G". Before commit 75cdcd1 (v2.9.0), trailing
> garbage after a recognized suffix was silently ignored. "1.0G",
> "1.0GiB", "1.0Garbage-trucks-of-RAM" were all the same to QEMU. No
> more.
>
> All clear?
That said, virsh from libvirt manages to recognize 'G' and 'GiB' as
synonyms (powers of 2), as well as 'GB' (powers of 10); we could justify
patching qemu's parser to accept more valid suffixes, particularly since
'GiB' is a typical suffix that has seen use (in spite of it not being
documented).
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3266
Virtualization: qemu.org | libvirt.org
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