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From 90d96c4f6a44d895f8999da8c4721a04612e6379 Mon Sep 17 00:00:00 2001
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From: Kairui Song <kasong@redhat.com>
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Date: Tue, 29 Oct 2019 16:29:14 +0800
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Subject: [PATCH] 90kernel-modules: don't install any block driver if not
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needed
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If hostonly mode is in use, and there isn't any block device included
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as hostonly device, then the initramfs won't need any block driver.
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Eg. for kdump built image, there could be only one nfs mount point,
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or the initramfs may only execute some network operation then reboot.
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In such case, skip block driver installation to save space and time.
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Signed-off-by: Kairui Song <kasong@redhat.com>
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(cherry picked from commit f4ad2e5c8964b6c7b50420299a0096bade6a40bd)
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Resolves: #1776659
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---
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modules.d/90kernel-modules/module-setup.sh | 32 +++++++++++++++++++++++-------
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1 file changed, 25 insertions(+), 7 deletions(-)
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diff --git a/modules.d/90kernel-modules/module-setup.sh b/modules.d/90kernel-modules/module-setup.sh
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index 3dfceff0..c91ba10c 100755
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--- a/modules.d/90kernel-modules/module-setup.sh
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+++ b/modules.d/90kernel-modules/module-setup.sh
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@@ -2,6 +2,8 @@
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# called by dracut
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installkernel() {
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+ local _blockfuncs='ahci_platform_get_resources|ata_scsi_ioctl|scsi_add_host|blk_cleanup_queue|register_mtd_blktrans|scsi_esp_register|register_virtio_device|usb_stor_disconnect|mmc_add_host|sdhci_add_host|scsi_add_host_with_dma'
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+
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find_kernel_modules_external () {
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local _OLDIFS
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local external_pattern="^/"
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@@ -16,11 +18,25 @@ installkernel() {
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done < "$srcmods/modules.dep"
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IFS=$_OLDIFS
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}
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- local _blockfuncs='ahci_platform_get_resources|ata_scsi_ioctl|scsi_add_host|blk_cleanup_queue|register_mtd_blktrans|scsi_esp_register|register_virtio_device|usb_stor_disconnect|mmc_add_host|sdhci_add_host|scsi_add_host_with_dma'
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+
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+ is_block_dev() {
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+ [ -e /sys/dev/block/$1 ] && return 0
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+ return 1
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+ }
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+
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+ install_block_modules () {
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+ hostonly='' instmods sr_mod sd_mod scsi_dh ata_piix
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+ instmods \
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+ scsi_dh_rdac scsi_dh_emc scsi_dh_alua \
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+ =ide nvme vmd nfit \
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+ virtio_blk
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+
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+ dracut_instmods -o -s "${_blockfuncs}" "=drivers"
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+ }
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if [[ -z $drivers ]]; then
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hostonly='' instmods \
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- sr_mod sd_mod scsi_dh ata_piix hid_generic unix \
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+ hid_generic unix \
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ehci-hcd ehci-pci ehci-platform \
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ohci-hcd ohci-pci \
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uhci-hcd \
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@@ -38,10 +54,10 @@ installkernel() {
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${NULL}
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instmods \
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- yenta_socket scsi_dh_rdac scsi_dh_emc scsi_dh_alua \
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+ yenta_socket \
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atkbd i8042 usbhid firewire-ohci pcmcia hv-vmbus \
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- virtio virtio_blk virtio_ring virtio_pci virtio_scsi \
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- "=drivers/pcmcia" =ide nvme vmd nfit
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+ virtio virtio_ring virtio_pci virtio_scsi \
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+ "=drivers/pcmcia"
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if [[ "$(uname -m)" == arm* || "$(uname -m)" == aarch64 ]]; then
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# arm/aarch64 specific modules
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@@ -72,10 +88,12 @@ installkernel() {
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${NULL}
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fi
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- dracut_instmods -o -s "${_blockfuncs}" "=drivers"
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-
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find_kernel_modules_external | instmods
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+ if ! [[ $hostonly ]] || for_each_host_dev_and_slaves is_block_dev; then
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+ install_block_modules
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+ fi
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+
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# if not on hostonly mode, install all known filesystems,
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# if the required list is not set via the filesystems variable
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if ! [[ $hostonly ]]; then
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