From: Alexey Kardashevskiy <aik@ozlabs.ru>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: QEMU Developers <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] Using TRIM to shrink qcow2 images
Date: Fri, 04 Oct 2013 17:07:39 +1000 [thread overview]
Message-ID: <524E693B.4070500@ozlabs.ru> (raw)
In-Reply-To: <524E68B4.10906@redhat.com>
On 10/04/2013 05:05 PM, Paolo Bonzini wrote:
> Il 04/10/2013 08:22, Alexey Kardashevskiy ha scritto:
>>
>> btw I tried "discard=on" as you described (with if=virtio) and received
>> an error:
>> [root@localhost ~]# fstrim -v /
>> fstrim: /: FITRIM ioctl failed: Operation not supported
>>
>> In my case if=virtio means virtio-blk. If I use virtio-scsi or ibmvscsi,
>> fstrim works just fine but failing virtio-blk bothers me a bit as we
>> might have a bug in ppc64, do not we? (we == ppc64 folks, of course :) )
>>
>
> No, virtio-blk does not support trim.
So the example was broken or if=virtio uses virtio-scsi (instead of
virtio-blk) on x86?
--
Alexey
next prev parent reply other threads:[~2013-10-04 7:07 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-08 10:34 [Qemu-devel] Using TRIM to shrink qcow2 images Ralf Ramsauer
2013-08-08 11:47 ` François Revol
2013-08-08 12:00 ` Paolo Bonzini
2013-10-04 6:22 ` Alexey Kardashevskiy
2013-10-04 7:05 ` Paolo Bonzini
2013-10-04 7:07 ` Alexey Kardashevskiy [this message]
2013-10-04 12:45 ` Paolo Bonzini
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