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From: | Paolo Bonzini |
Subject: | Re: [Qemu-devel] [PATCH 0/3] virtio-blk: Suppress error action on r/w beyond end |
Date: | Fri, 06 Jun 2014 09:36:43 +0200 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0 |
Il 05/06/2014 14:15, Markus Armbruster ha scritto:
When a device model's I/O operation fails, we execute the error action. This lets layers above QEMU implement thin provisioning, or attempt to correct errors before they reach the guest. But when the I/O operation fails because its invalid, reporting the error to the guest is the only sensible action. This short series does exactly that for virtio-blk. I intend to do the same for IDE and SCSI.
Actually SCSI already does it (see check_lba_range in hw/scsi/scsi-disk.c). Thanks for thinking about it though!
Paolo
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