tree 6b7ae39913a46f87304dd83653eb139971ff1172
parent 1c734c974a8cc2c153e6c5b7b99db8f535436410
author Yaguang Tang <yaguang.tang@vexxhost.com> 1738945033 +0800
committer Yaguang Tang <yaguang.tang@vexxhost.com> 1739308910 +0000

add kernel option aio-max-nr for aio=native storage

For VMs that have disks with aio=native, the qemu will request an
io_setup with nr_events=1024, and hence on each VM startup, the
fs.aio-nr will be incremented by 1024. Once it reaches the
fs.aio-max-nrlimit (65536 by default), the new io_setup request
from the newly spawned VMs will fail with EAGAIN

Change-Id: I564d6b99e43e05b051de62d9aea2a1fe41dacd8a