On Fri, May 19, 2017 at 03:16:26PM +0200, Erik Skultety wrote: > From: "ning.bo" <ning.bo9@xxxxxxxxxx> > > When a number of SRIOV VFs (up to 128 on Intel XL710) is created: > for i in `seq 0 1`; do > echo 63 > /sys/class/net/<interface>/device/sriov_numvfs > done > > libvirtd will then report "udev_monitor_receive_device returned NULL" > error because the netlink socket buffer is not big enough (using GDB on > libudev confirmed this with ENOBUFFS) and thus some udev events were > dropped. This results in some devices being missing in the nodedev-list > output. This patch overrides the system's rmem_max limit but for that, > we need to make sure we've got root privileges. > > https://bugzilla.redhat.com/show_bug.cgi?id=1450960 > > Signed-off-by: ning.bo <ning.bo9@xxxxxxxxxx> > Signed-off-by: Erik Skultety <eskultet@xxxxxxxxxx> > --- > Additionally, we might want to check for the errno, providing a specific > message if such issue occurs again in a further non-specified point in time and > return the generic, yet cryptic one for all other cases. > > src/node_device/node_device_udev.c | 7 +++++++ > 1 file changed, 7 insertions(+) This has broken the build on older systems as udev doesn't have this method. Regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :| -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list
