On Mon, Aug 10, 2020 at 01:14:44PM +0300, Denis V. Lunev wrote: > There are severe delays with IO requests processing if QEMU is running in > virtual machine or over software defined storage. Such delays potentially > results in unpredictable guest behavior. For example, guests over IDE or > SATA drive could remount filesystem read-only if write is performed > longer than 10 seconds. > > Such reports are very complex to process. Some good starting point for this > seems quite reasonable. This patch provides one. It adds logging of such > potentially dangerous long IO operations. > > Changed from v2: > - removed accidentally added slirp subproject ID > - added comment describing timeout selection to patch 3 > > Changes from v1: > - fixed conversions using macros suggested by Stefan > - fixed option declaration > - enabled by default with patch 3 > > Signed-off-by: Denis V. Lunev <d...@openvz.org> > CC: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com> > CC: Kevin Wolf <kw...@redhat.com> > CC: Max Reitz <mre...@redhat.com> > CC: Stefan Hajnoczi <stefa...@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefa...@redhat.com>
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