From: Paolo Bonzini <pbonzini@redhat.com>
To: Alexey Kardashevskiy <aik@ozlabs.ru>
Cc: QEMU Developers <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] Using TRIM to shrink qcow2 images
Date: Fri, 04 Oct 2013 09:05:24 +0200 [thread overview]
Message-ID: <524E68B4.10906@redhat.com> (raw)
In-Reply-To: <CADc5QFfRnBb1bwFEbLGN4t4HQ4B2Fs6YvMzrejB=XeQtkYiC_w@mail.gmail.com>
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.
Paolo
next prev parent reply other threads:[~2013-10-04 7:05 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 [this message]
2013-10-04 7:07 ` Alexey Kardashevskiy
2013-10-04 12:45 ` Paolo Bonzini
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