From: Paolo Bonzini <pbonzini@redhat.com>
To: Taeha Kim <kthguru@gmail.com>, qemu-block@nongnu.org
Cc: kwolf@redhat.com, 김태하 <thlab.kim@samsung.com>, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH] block: There in no change in userland tools after resizing qcow2 image except file utility.
Date: Sun, 19 Jul 2015 19:57:48 +0200 [thread overview]
Message-ID: <55ABE51C.3020708@redhat.com> (raw)
In-Reply-To: <CADsSMSebYEQg7AHu5jqmKvz_68ano0ZoBjEkr6JK4ntsB4=T5Q@mail.gmail.com>
On 19/07/2015 10:12, Taeha Kim wrote:
> $ ./qemu/qemu-img resize 100G.qcow2 200G
> Image resized.
>
>
> $ ./qemu/qemu-img check 100G.qcow2
> No errors were found on the image.
> 1638400/3276800 = 50.00% allocated, 0.00% fragmented, 0.00% compressed clusters
> Image end offset: 107390894080
You are getting a large qcow2 image because you have specified metadata
preallocation. However you can see from "qemu-img check" that the
preallocation is lost even with your patch.
I think if you try resizing to 102408M for example (very little above
the previous size) "qemu-img check" will show corruption after the resize.
Paolo
prev parent reply other threads:[~2015-07-19 17:57 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-19 8:12 [Qemu-devel] [Qemu-block] [PATCH] block: There in no change in userland tools after resizing qcow2 image except file utility Taeha Kim
2015-07-19 17:57 ` Paolo Bonzini [this message]
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