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dracut-module-setup.sh: also install the driver of physical NIC for

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Hyper-V VM with accelerated networking

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2151842

Currently, vmcore dumping to remote fs fails on Azure Hyper-V VM with
accelerated networking because it uses a physical NIC for accrelarated
networking [1]. In this case, the driver for this physical NIC should be
installed as well.

[1] https://learn.microsoft.com/en-us/azure/virtual-network/accelerated-networking-overview

Fixes: a65dde2d ("Reduce kdump memory consumption by only installing needed NIC drivers")

Reported-by: Xiaoqiang Xiong <xxiong@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
This commit is contained in:
Coiby Xu 2022-12-12 18:37:25 +08:00
parent 3b22cce1cb
commit bc101086e2
1 changed files with 13 additions and 0 deletions
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13
dracut-module-setup.sh
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@ -381,6 +381,14 @@ _get_nic_driver() {
ethtool -i "$1" | sed -n -E "s/driver: (.*)/\1/p"
}
_get_hpyerv_physical_driver() {
local _physical_nic
_physical_nic=$(find /sys/class/net/"$1"/ -name 'lower_*' | sed -En "s/\/.*lower_(.*)/\1/p")
[[ -n $_physical_nic ]] || return
_get_nic_driver "$_physical_nic"
}
kdump_install_nic_driver() {
local _netif _driver _drivers
@ -400,6 +408,11 @@ kdump_install_nic_driver() {
elif [[ $_driver == "team" ]]; then
# install the team mode drivers like team_mode_roundrobin.ko as well
_driver='=drivers/net/team'
elif [[ $_driver == "hv_netvsc" ]]; then
# A Hyper-V VM may have accelerated networking
# https://learn.microsoft.com/en-us/azure/virtual-network/accelerated-networking-overview
# Install the driver of physical NIC as well
_drivers+=("$(_get_hpyerv_physical_driver "$_netif")")
fi
_drivers+=("$_driver")