From: Christoph Hellwig <hch@lst.de>
To: ronnie sahlberg <ronniesahlberg@gmail.com>
Cc: Kevin Wolf <kwolf@redhat.com>,
qemu-devel@nongnu.org,
"Nicholas A. Bellinger" <nab@linux-iscsi.org>,
Hannes Reinecke <hare@suse.de>
Subject: Re: [Qemu-devel] [PATCH 1/1] iscsi: add iSCSI block device support
Date: Wed, 24 Nov 2010 18:04:37 +0100 [thread overview]
Message-ID: <20101124170437.GG31124@lst.de> (raw)
In-Reply-To: <AANLkTinke0r_ub4aqhbzG=LUjrvb4xEyM=5xFQwi1C3h@mail.gmail.com>
I don't really see the point of this. It's implemented as a protocol,
and thus the bottom of the qemu protocol stack. So we might get SCSI
commands in from the guest, decode them, just to re-encode them again
and send them off to the network all inside qemu.
Do you have any performance numbers showing why the addition of the
code is nessecary over just using the kernel iscsi initiator? Which
btw, is a lot more flexible as it also supports SG_IO passthrough
and thus accessing other devices not supporting the SBC command set.
next prev parent reply other threads:[~2010-11-24 17:04 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-21 22:17 [Qemu-devel] [PATCH 1/1] iscsi: add iSCSI block device support ronnie sahlberg
2010-11-21 23:13 ` FUJITA Tomonori
2010-11-21 23:39 ` ronnie sahlberg
2010-11-22 9:27 ` [Qemu-devel] " Kevin Wolf
2010-11-24 17:04 ` Christoph Hellwig [this message]
2010-11-24 19:14 ` [Qemu-devel] " Stefan Hajnoczi
2010-11-25 4:32 ` Nicholas A. Bellinger
2010-11-25 5:22 ` ronnie sahlberg
2010-11-25 9:30 ` Kevin Wolf
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