From: Alexandre DERUMIER <aderumier@odiso.com>
To: ronnie sahlberg <ronniesahlberg@gmail.com>
Cc: kvm@vger.kernel.org
Subject: Re: block device type supporting trim or scsi unmap ?
Date: Thu, 10 May 2012 14:28:25 +0200 (CEST) [thread overview]
Message-ID: <b7331f49-8595-4221-9f46-415cbc4ddcbc@mailpro> (raw)
In-Reply-To: <CAN05THR76Pd9d5gTX1X_2Ya-NmXh+7j7sK5GeZTr+tQH=QxG0A@mail.gmail.com>
>>iscsi supports it too but it requires that your iscsi target supports
>>these opcodes, and that the filesystem/storage behind it supports it
>>too.
>>TGTD with EXT4 and a suitable storage device should do the trick.
I'm using a iscsi solaris target, with scsi UNMAP support.
Drives also support scsi unmap in raid (ocz talos hdd).
I'm using direct lun access from host to guest.
But my question was, which block device inside guests have trim or scsi unmap implemention ?
----- Mail original -----
De: "ronnie sahlberg" <ronniesahlberg@gmail.com>
À: "Alexandre DERUMIER" <aderumier@odiso.com>
Cc: kvm@vger.kernel.org
Envoyé: Jeudi 10 Mai 2012 12:27:05
Objet: Re: block device type supporting trim or scsi unmap ?
On Thu, May 10, 2012 at 8:19 PM, Alexandre DERUMIER <aderumier@odiso.com> wrote:
> Hi,
> I'm looking to implement a san storage with ssd drive.
>
> which block device type support trim or scsi unmap ?
>
> I think ide support it (but performance...)
>
> scsi ?
> virtio ?
> virtio-scsi ?
iscsi supports it too but it requires that your iscsi target supports
these opcodes, and that the filesystem/storage behind it supports it
too.
TGTD with EXT4 and a suitable storage device should do the trick.
>
>
> Regards,
>
> Alexandre Derumier
>
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Alexandre D erumier
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next prev parent reply other threads:[~2012-05-10 12:28 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <4d1098b7-0c3e-4253-9381-be021467b76e@mailpro>
2012-05-10 10:19 ` block device type supporting trim or scsi unmap ? Alexandre DERUMIER
2012-05-10 10:27 ` ronnie sahlberg
2012-05-10 12:28 ` Alexandre DERUMIER [this message]
2012-05-10 12:36 ` ronnie sahlberg
2012-05-10 20:42 ` Alexandre DERUMIER
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