[libvirt] Virt io blk buffer
Hi all Can any one tell what is the default Vitio blk IO Buffer size And can we change it ? if yes how? DISCLAIMER: ----------------------------------------------------------------------------------------------------------------------- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or NECHCL or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of NECHCL or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. . -----------------------------------------------------------------------------------------------------------------------
On 02/23/2012 11:53 PM, Pankaj Rawat wrote:
Hi all
Can any one tell what is the default Vitio blk IO Buffer size
You'll probably get better response on the qemu lists, since virtio is part of qemu.
And can we change it ? if yes how?
Libvirt does not currently expose anything to change this, other than the fact that _if_ qemu supports a way to change it on the command line, you can use <qemu:command> in your XML to add the extra arguments; or if qemu supports it via a monitor command, you can use 'virsh qemu-monitor-command' to change it at runtime. But again, I don't know enough about the situation to know if qemu even exposes a parameterizable block size for virtio, since no one has previously asked for libvirt to start encoding it into its XML as a formal feature.
The contents of this e-mail and any attachment(s) are confidential and
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Pankaj Rawat