76 lines
2.7 KiB
Diff
76 lines
2.7 KiB
Diff
From 811c814677b83874fb631f6c07576765303b615a Mon Sep 17 00:00:00 2001
|
|
From: =?UTF-8?q?=C4=90o=C3=A0n=20Tr=E1=BA=A7n=20C=C3=B4ng=20Danh?=
|
|
<congdanhqx@gmail.com>
|
|
Date: Sat, 3 Oct 2020 14:23:26 +0700
|
|
Subject: [PATCH] rootfs-block: only write root argument for block device
|
|
MIME-Version: 1.0
|
|
Content-Type: text/plain; charset=UTF-8
|
|
Content-Transfer-Encoding: 8bit
|
|
|
|
Some filesystem (e.g. ZFS, and btrfs subvolumes) don't use block
|
|
devices. Should they be mounted as `/`, `find_root_block_device`
|
|
yields nothing, hence dracut will append this problematic argument
|
|
to kernel cmdline:
|
|
|
|
root=/dev/block
|
|
|
|
On a machine that employ root ZFS on LUKS, which was setup with
|
|
an OpenPGP-encrypted key file, this argument renders that machine
|
|
unbootable. Remove that `root=/dev/block` manually could boot the
|
|
machine.
|
|
|
|
Let check if that device is a block device before write down `root`
|
|
argument. This is consistent with the check for block device in
|
|
`find_block_device`.
|
|
|
|
Signed-off-by: Đoàn Trần Công Danh <congdanhqx@gmail.com>
|
|
---
|
|
modules.d/95rootfs-block/module-setup.sh | 25 +++++++++++++++----------
|
|
1 file changed, 15 insertions(+), 10 deletions(-)
|
|
|
|
diff --git a/modules.d/95rootfs-block/module-setup.sh b/modules.d/95rootfs-block/module-setup.sh
|
|
index 987373b4..c3982207 100755
|
|
--- a/modules.d/95rootfs-block/module-setup.sh
|
|
+++ b/modules.d/95rootfs-block/module-setup.sh
|
|
@@ -30,7 +30,8 @@ cmdline_journal() {
|
|
}
|
|
|
|
cmdline_rootfs() {
|
|
- local _dev=/dev/block/$(find_root_block_device)
|
|
+ local _block=$(find_root_block_device)
|
|
+ local _dev=/dev/block/$_block
|
|
local _fstype _flags _subvol
|
|
|
|
# "--no-hostonly-default-device" can result in empty root_devs
|
|
@@ -38,17 +39,21 @@ cmdline_rootfs() {
|
|
return
|
|
fi
|
|
|
|
- if [ -e $_dev ]; then
|
|
+ if [ -n "$_block" -a -b $_dev ]; then
|
|
printf " root=%s" "$(shorten_persistent_dev "$(get_persistent_dev "$_dev")")"
|
|
- _fstype="$(find_mp_fstype /)"
|
|
- _flags="$(find_mp_fsopts /)"
|
|
+ fi
|
|
+ _fstype="$(find_mp_fstype /)"
|
|
+ _flags="$(find_mp_fsopts /)"
|
|
+ if [ -n "$_fstype" ]; then
|
|
printf " rootfstype=%s" "$_fstype"
|
|
- if [[ $use_fstab != yes ]] && [[ $_fstype = btrfs ]]; then
|
|
- _subvol=$(findmnt -e -v -n -o FSROOT --target /) \
|
|
- && _subvol=${_subvol#/}
|
|
- _flags="$_flags,${_subvol:+subvol=$_subvol}"
|
|
- fi
|
|
- printf " rootflags=%s" "${_flags#,}"
|
|
+ fi
|
|
+ if [[ $use_fstab != yes ]] && [[ $_fstype = btrfs ]]; then
|
|
+ _subvol=$(findmnt -e -v -n -o FSROOT --target /) \
|
|
+ && _subvol=${_subvol#/}
|
|
+ _flags="$_flags${_subvol:+,subvol=$_subvol}"
|
|
+ fi
|
|
+ if [ -n "$_flags" ]; then
|
|
+ printf " rootflags=%s" "$_flags"
|
|
fi
|
|
}
|
|
|