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本帖最后由 2011niumao 于 2017-1-12 19:35 编辑
已经找到原因了。是local文件修改时候引入的一个问题。在修改local文件时候把系统一些解析引导参数的指令也跳过去了。只需要调整一个语句的位置就好了。把 if [ -z "$kloop" ]; then 从原先一开始的位置向后移动到local_premount 语句后面，就可以使用root=UUID=XXXXXXXXXXXXXXXXXXx 和root=LABEL=XXX来引导了。测试通过了。以下是新的写法。仅仅是调整 了if [ -z "$kloop" ]; then位置。local_mount_root()
{
local_top
local_device_setup "${ROOT}" root
ROOT="${DEV}"
# Get the root filesystem type if not set
if [ -z "${ROOTFSTYPE}" ]; then
FSTYPE=$(get_fstype "${ROOT}")
else
FSTYPE=${ROOTFSTYPE}
fi
local_premount
if [ -z "$kloop" ]; then
if [ "${readonly}" = "y" ] && \
[ -z "$LOOP" ]; then
roflag=-r
else
roflag=-w
fi
# FIXME This has no error checking
[ -n "${FSTYPE}" ] && modprobe ${FSTYPE}
checkfs ${ROOT} root
# FIXME This has no error checking
# Mount root
mount ${roflag} ${FSTYPE:+-t ${FSTYPE} }${ROOTFLAGS} ${ROOT} ${rootmnt}
mountroot_status="$?"
if [ "$LOOP" ]; then
if [ "$mountroot_status" != 0 ]; then
if [ ${FSTYPE} = ntfs ] || [ ${FSTYPE} = vfat ]; then
panic "
Could not mount the partition ${ROOT}.
This could also happen if the file system is not clean because of an operating
system crash, an interrupted boot process, an improper shutdown, or unplugging
of a removable device without first unmounting or ejecting it. To fix this,
simply reboot into Windows, let it fully start, log in, run 'chkdsk /r', then
gracefully shut down and reboot back into Windows. After this you should be
able to reboot again and resume the installation.
(filesystem = ${FSTYPE}, error code = $mountroot_status)
"
fi
fi
mkdir -p /host
mount -o move ${rootmnt} /host
while [ ! -e "/host/${LOOP#/}" ]; do
panic "ALERT! /host/${LOOP#/} does not exist. Dropping to a shell!"
done
# Get the loop filesystem type if not set
if [ -z "${LOOPFSTYPE}" ]; then
eval $(fstype < "/host/${LOOP#/}")
else
FSTYPE="${LOOPFSTYPE}"
fi
if [ "$FSTYPE" = "unknown" ] && [ -x /sbin/blkid ]; then
FSTYPE=$(/sbin/blkid -s TYPE -o value "/host/${LOOP#/}")
[ -z "$FSTYPE" ] && FSTYPE="unknown"
fi
if [ ${readonly} = y ]; then
roflag=-r
else
roflag=-w
fi
# FIXME This has no error checking
modprobe loop
modprobe ${FSTYPE}
# FIXME This has no error checking
mount ${roflag} -o loop -t ${FSTYPE} ${LOOPFLAGS} "/host/${LOOP#/}" ${rootmnt}
if [ -d ${rootmnt}/host ]; then
mount -o move /host ${rootmnt}/host
fi
fi
fi
######################################
# kloop by niumao #
######################################
if [ -n "$kloop" ]; then
### reset the value of the root variable
HOSTDEV="${ROOT}"
NEWROOT="${rootmnt}"
[ -n "$kroot" ] && ROOT="$kroot"
[ -n "$kroot" ] || ROOT="/dev/loop0"
export ROOT
realroot="$ROOT"
### auto probe the fs-type of the partition in which vhd-file live and mount it /host
mkdir -p /host
if [ -z "$hostfstype" ]; then
hostfstype="$(blkid -s TYPE -o value "${HOSTDEV}")"
[ -z "$hostfstype" -o "${hostfstype}" = "ntfs" ] && hostfstype="ntfs-3g"
fi
[ "${hostfstype}" = "ntfs-3g" ] || modprobe ${hostfstype}
mount -t ${hostfstype} -o rw ${HOSTDEV} /host
### mount the vhd-file on a loop-device
if [ "${kloop#/}" != "${kloop}" ]; then
modprobe loop
kpartx -av /host$kloop
[ -e "$realroot" ] || sleep 3
fi
### probe lvm on vhd-file
if [ -n "$klvm" ]; then
modprobe dm-mod
vgscan
vgchange -ay $klvm
[ -e "$realroot" ] || sleep 3
fi
if [ "${readonly}" = "y" ] ; then
roflag="-r"
else
roflag="-w"
fi
### mount the realroot / in vhd-file on $NEWROOT
if [ -z "${kloopfstype}" ]; then
kloopfstype="$(blkid -s TYPE -o value "$realroot")"
[ -z "${kloopfstype}" ] && kloopfstype="ext4"
fi
[ -e "$realroot" ] || sleep 3
mount ${roflag} -t "${kloopfstype}" $realroot $NEWROOT
### mount /host in initrd to /host of the realrootfs
if [ "${hosthidden}" != "y" ] ; then
[ -d "${NEWROOT}"/host ] || mkdir -p ${NEWROOT}/host
mount --move /host ${NEWROOT}/host
fi
fi
######################################
# kloop by niumao ended #
######################################
} |
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发表于 2016-12-27 16:34:04
