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[Qemu-discuss] Block format 'qcow2' used by device 'drive-virtio0' doesn

From: Hendrik Visage
Subject: [Qemu-discuss] Block format 'qcow2' used by device 'drive-virtio0' doesn't support the option 'physical_block_size'
Date: Tue, 27 Jan 2015 18:52:21 +0200

Good day,

 Anybody able to guide me the combinations, etc. when and where these
are supported?
I'm having performance issues on 512e advance format/4Kb disks, and
the symptoms for me tells me that I'm hitting the read-modify-write
problems as the VMs report 512/512 for the virtio block devices, and I
want to modify that to 4k sector sizes.

Hendrik Visage

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