No longer treat atomic/silverblue specially
This commit remove almost all special workaround for atomic, and treat all bind mounts in any environment equally. Use a helper get_bind_mount_directory_from_path to get the bind mount source path of given path. is_atomic function now only used to determine the right /boot path for atomic/silverblue environment. And remove get_mntpoint_from_path(), it's the only function that never ignore bind mount, and it have no caller after this clean up. Signed-off-by: Kairui Song <kasong@redhat.com> Acked-by: Lianbo Jiang <lijiang@redhat.com>
This commit is contained in:
Kairui Song
parent
b5b0b90521
commit
bde4b7af3b
@ -428,20 +428,10 @@ default_dump_target_install_conf()
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is_user_configured_dump_target && return
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_save_path=$(get_save_path)
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_mntpoint=$(get_mntpoint_from_path $_save_path)
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_save_path=$(get_bind_mount_source $(get_save_path))
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_target=$(get_target_from_path $_save_path)
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if is_atomic && is_bind_mount $_mntpoint; then
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_save_path=${_save_path##"$_mntpoint"}
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# the real dump path in the 2nd kernel, if the mount point is bind mounted.
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_save_path=$(get_bind_mount_directory $_mntpoint)/$_save_path
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_mntpoint=$(get_mntpoint_from_target $_target)
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# the absolute path in the 1st kernel
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_save_path=$_mntpoint/$_save_path
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fi
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_fstype=$(get_fs_type_from_target $_target)
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if is_fs_type_nfs $_fstype; then
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kdump_install_net "$_target"
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@ -452,8 +442,6 @@ default_dump_target_install_conf()
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echo "$_fstype $_target" >> ${initdir}/tmp/$$-kdump.conf
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# strip the duplicated "/"
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_save_path=$(echo $_save_path | tr -s /)
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# don't touch the path under root mount
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if [ "$_mntpoint" != "/" ]; then
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_save_path=${_save_path##"$_mntpoint"}
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@ -466,21 +454,13 @@ default_dump_target_install_conf()
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adjust_bind_mount_path()
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{
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local _target=$1
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local _save_path=$(get_save_path)
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local _absolute_save_path=$(get_mntpoint_from_target $_target)/$_save_path
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local _mntpoint=$(get_mntpoint_from_target $1)
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local _absolute_save_path=$(get_bind_mount_source $_mntpoint$_save_path)
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_absolute_save_path=$(echo "$_absolute_save_path" | tr -s /)
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local _mntpoint=$(get_mntpoint_from_path $_absolute_save_path)
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if is_bind_mount $_mntpoint; then
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_save_path=${_absolute_save_path##"$_mntpoint"}
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# the real dump path in the 2nd kernel, if the mount point is bind mounted.
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_save_path=$(get_bind_mount_directory $_mntpoint)/$_save_path
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#erase the old path line, then insert the parsed path
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if [ $_absolute_save_path != $_save_path ]; then
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sed -i "/^path/d" ${initdir}/tmp/$$-kdump.conf
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echo "path $_save_path" >> ${initdir}/tmp/$$-kdump.conf
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echo "path $_absolute_save_path" >> ${initdir}/tmp/$$-kdump.conf
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fi
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}
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@ -500,9 +480,7 @@ kdump_install_conf() {
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ext[234]|xfs|btrfs|minix)
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_pdev=$(kdump_get_persistent_dev $_val)
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sed -i -e "s#^$_opt[[:space:]]\+$_val#$_opt $_pdev#" ${initdir}/tmp/$$-kdump.conf
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if is_atomic; then
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adjust_bind_mount_path "$_val"
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fi
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;;
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ssh|nfs)
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kdump_install_net "$_val"
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69
kdump-lib.sh
69
kdump-lib.sh
@ -204,44 +204,39 @@ get_kdump_targets()
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echo "$kdump_targets"
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}
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# Return the bind mount source path, return the path itself if it's not bind mounted
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# Eg. if /path/to/src is bind mounted to /mnt/bind, then:
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# /mnt/bind -> /path/to/src, /mnt/bind/dump -> /path/to/src/dump
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#
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# findmnt uses the option "-v, --nofsroot" to exclusive the [/dir]
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# in the SOURCE column for bind-mounts, then if $_mntpoint equals to
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# $_mntpoint_nofsroot, the mountpoint is not bind mounted directory.
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is_bind_mount()
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{
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local _mntpoint=$(findmnt $1 | tail -n 1 | awk '{print $2}')
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local _mntpoint_nofsroot=$(findmnt -v $1 | tail -n 1 | awk '{print $2}')
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if [[ $_mntpoint = $_mntpoint_nofsroot ]]; then
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return 1
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else
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return 0
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fi
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}
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#
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# Below is just an example for mount info
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# /dev/mapper/atomicos-root[/ostree/deploy/rhel-atomic-host/var], if the
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# directory is bind mounted. The former part represents the device path, rest
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# part is the bind mounted directory which quotes by bracket "[]".
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get_bind_mount_directory()
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get_bind_mount_source()
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{
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local _mntpoint=$(findmnt $1 | tail -n 1 | awk '{print $2}')
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local _mntpoint_nofsroot=$(findmnt -v $1 | tail -n 1 | awk '{print $2}')
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local _path=$1
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# In case it's a sub path in a mount point, get the mount point first
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local _mnt_top=$(df $_path | tail -1 | awk '{print $NF}')
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local _mntpoint=$(findmnt $_mnt_top | tail -n 1 | awk '{print $2}')
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local _mntpoint_nofsroot=$(findmnt -v $_mnt_top | tail -n 1 | awk '{print $2}')
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if [[ "$_mntpoint" = $_mntpoint_nofsroot ]]; then
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echo $_path && return
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fi
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_mntpoint=${_mntpoint#*$_mntpoint_nofsroot}
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_mntpoint=${_mntpoint#[}
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_mntpoint=${_mntpoint%]}
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_path=${_path#$_mnt_top}
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echo $_mntpoint
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}
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get_mntpoint_from_path()
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{
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df $1 | tail -1 | awk '{print $NF}'
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echo $_mntpoint$_path
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}
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# Return the real underlaying device of a path, ignore bind mounts
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get_target_from_path()
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{
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local _target
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@ -256,33 +251,11 @@ get_fs_type_from_target()
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findmnt -k -f -n -r -o FSTYPE $1
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}
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# input: device path
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# output: the general mount point
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# find the general mount point, not the bind mounted point in atomic
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# As general system, Use the previous code
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#
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# ERROR and EXIT:
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# the device can be umounted the general mount point, if one of the mount point is bind mounted
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# For example:
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# mount /dev/sda /mnt/
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# mount -o bind /mnt/var /var
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# umount /mnt
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# Find the general mount point of a dump target, not the bind mount point
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get_mntpoint_from_target()
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{
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if is_atomic; then
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for _mnt in $(findmnt -k -n -r -o TARGET $1)
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do
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if ! is_bind_mount $_mnt; then
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echo $_mnt
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return
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fi
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done
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echo "Mount $1 firstly, without the bind mode" >&2
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exit 1
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else
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echo $(findmnt -k -f -n -r -o TARGET $1)
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fi
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# Expcilitly specify --source to findmnt could ensure non-bind mount is returned
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findmnt -k -f -n -r -o TARGET --source $1
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}
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# get_option_value <option_name>
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15
mkdumprd
15
mkdumprd
@ -240,20 +240,11 @@ handle_default_dump_target()
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check_save_path_fs $SAVE_PATH
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_mntpoint=$(get_mntpoint_from_path $SAVE_PATH)
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_target=$(get_target_from_path $SAVE_PATH)
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if is_atomic && is_bind_mount $_mntpoint; then
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SAVE_PATH=${SAVE_PATH##"$_mntpoint"}
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# the real dump path in the 2nd kernel, if the mount point is bind mounted.
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SAVE_PATH=$(get_bind_mount_directory $_mntpoint)/$SAVE_PATH
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_save_path=$(get_bind_mount_source $SAVE_PATH)
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_target=$(get_target_from_path $_save_path)
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_mntpoint=$(get_mntpoint_from_target $_target)
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# the absolute path in the 1st kernel
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SAVE_PATH=$_mntpoint/$SAVE_PATH
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fi
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SAVE_PATH=${SAVE_PATH##"$_mntpoint"}
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SAVE_PATH=${_save_path##"$_mntpoint"}
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add_mount "$_target"
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check_size fs $_target
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}
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