diff options
Diffstat (limited to 'sys-boot/os-prober/files/os-prober-btrfsfix.patch')
| -rw-r--r-- | sys-boot/os-prober/files/os-prober-btrfsfix.patch | 418 |
1 files changed, 418 insertions, 0 deletions
diff --git a/sys-boot/os-prober/files/os-prober-btrfsfix.patch b/sys-boot/os-prober/files/os-prober-btrfsfix.patch new file mode 100644 index 00000000..bb5e6c03 --- /dev/null +++ b/sys-boot/os-prober/files/os-prober-btrfsfix.patch @@ -0,0 +1,418 @@ +Index: os-prober/common.sh +=================================================================== +--- os-prober.orig/common.sh ++++ os-prober/common.sh +@@ -155,6 +155,7 @@ parse_proc_mounts () { + done + } + ++# add forth parameter to pickup btrfs subvol info + parsefstab () { + while read -r line; do + case "$line" in +@@ -165,12 +166,22 @@ parsefstab () { + set -f + set -- $line + set +f +- printf '%s %s %s\n' "$1" "$2" "$3" ++ printf '%s %s %s %s\n' "$1" "$2" "$3" "$4" + ;; + esac + done + } + ++#check_btrfs_mounted $bootsv $bootuuid) ++check_btrfs_mounted () { ++ bootsv="$1" ++ bootuuid="$2" ++ bootdev=$(blkid | grep "$bootuuid" | cut -d ':' -f 1) ++ bindfrom=$(grep " btrfs " /proc/self/mountinfo | ++ grep " $bootdev " | grep " /$bootsv " | cut -d ' ' -f 5) ++ printf "%s" "$bindfrom" ++} ++ + unescape_mount () { + printf %s "$1" | \ + sed 's/\\011/ /g; s/\\012/\n/g; s/\\040/ /g; s/\\134/\\/g' +Index: os-prober/linux-boot-prober +=================================================================== +--- os-prober.orig/linux-boot-prober ++++ os-prober/linux-boot-prober +@@ -5,16 +5,143 @@ set -e + + newns "$@" + require_tmpdir ++ERR="n" ++ ++tmpmnt=/var/lib/os-prober/mount ++if [ ! -d "$tmpmnt" ]; then ++ mkdir "$tmpmnt" ++fi ++ ++mounted= ++bootmnt= ++bootsv= ++bootuuid= + + grep "^/dev/" /proc/mounts | parse_proc_mounts >"$OS_PROBER_TMP/mounted-map" || true + +-partition="$1" ++if [ -z "$1" ]; then ++ ERR=y ++elif [ "$1" = btrfs -a -z "$2" ]; then ++ ERR=y ++elif [ "$1" = btrfs -a -z "$3" ]; then ++ ERR=y ++elif [ "$1" = btrfs ]; then ++ type=btrfs ++ echo "$2" | grep -q "^UUID=" || ERR=y ++ echo "$3" | grep -q "^subvol=" || ERR=y ++ export "$2" ++ export "$3" ++ partition=$(blkid | grep "$UUID" | cut -d ':' -f 1 | tr '\n' ' ' | cut -d ' ' -f 1) ++ debug "btrfs: partition=$partition, UUID=$UUID, subvol=$subvol" ++else ++ partition="$1" ++ type=other ++fi + +-if [ -z "$partition" ]; then ++if [ "x$ERR" != xn ]; then + echo "usage: linux-boot-prober partition" >&2 ++ echo " linux-boot-prober partition | btrfs UUID=<> subvol=<>" >&2 + exit 1 + fi + ++if [ "$type" = btrfs ]; then ++ # handle all of the btrfs stuff here ++ if [ ! -e "/proc/self/mountinfo" ]; then ++ warn "/proc/self/mountinfo does not exist, exiting" ++ umount "$tmpmnt" 2>/dev/null ++ rmdir "$tmpmnt" 2>/dev/null ++ exit 1 ++ fi ++ mpoint=$(grep "btrfs" /proc/self/mountinfo | grep " /$subvol " | grep " $partition " | cut -d ' ' -f 5) ++ if [ "$mpoint" = "/" ]; then ++ warn "specifying active root not valid, exiting" ++ umount "$tmpmnt" 2>/dev/null ++ rmdir "$tmpmnt" 2>/dev/null ++ exit 1 ++ fi ++ if [ "$mpoint" = "$tmpmnt" ]; then ++ warn "btrfs subvol=$subvool, UUID=$UUID, already mounted on $tmpmnt **ERROR**" ++ umount "$tmpmnt" 2>/dev/null ++ rmdir "$tmpmnt" 2>/dev/null ++ exit 1 ++ fi ++ if [ -z "$mpoint" ]; then ++ # mount the btrfs root ++ if ! mount -o subvol=$subvol -t btrfs -U $UUID "$tmpmnt" 2>/dev/null; then ++ warn "error mounting btrfs subvol=$subvol UUID=$UUID" ++ umount "$tmpmnt/boot" 2>/dev/null ++ umount "$tmpmnt" 2>/dev/null ++ rmdir "$tmpmnt" 2>/dev/null ++ exit 1 ++ fi ++ else ++ # bind-mount ++ if ! mount -o bind "$mpoint" "$tmpmnt" 2>/dev/null; then ++ warn "error mounting btrfs bindfrom=$mpoint subvol=$subvol UUID=$UUID" ++ umount "$tmpmnt/boot" 2>/dev/null ++ umount "$tmpmnt" 2>/dev/null ++ rmdir "$tmpmnt" 2>/dev/null ++ exit 1 ++ fi ++ fi ++ debug "mounted btrfs $partition, subvol=$subvol on $tmpmnt" ++ if [ ! -e "$tmpmnt/etc/fstab" ]; then ++ warn "btrfs subvol=$subvol not root" ++ umount "$tmpmnt" 2>/dev/null ++ rmdir "$tmpmnt" 2>/dev/null ++ exit 1 ++ fi ++ bootmnt=$(parsefstab < "$tmpmnt/etc/fstab" | grep " /boot ") || true ++ if [ -z "$bootmnt" ]; then ++ # /boot is part of the root ++ bootpart="$partition" ++ bootsv="$subvol" ++ elif echo "$bootmnt" | cut -d ' ' -f 3 | grep -q "btrfs"; then ++ # separate btrfs /boot subvolume ++ bootsv=$(echo "$bootmnt" | cut -d ' ' -f 4 | grep "^subvol=" | sed "s/subvol=//" ) ++ bootuuid=$(echo "$bootmnt" | cut -d ' ' -f 1 | grep "^UUID=" | sed "s/UUID=//" ) ++ debug "mounting btrfs $tmpmnt/boot UUID=$bootuuid subvol=$bootsv" ++ bindfrom=$(check_btrfs_mounted $bootsv $bootuuid) ++ if [ -n "$bindfrom" ]; then ++ # already mounted some place ++ if ! mount -o bind $bindfrom "$tmpmnt/boot" 2>/dev/null; then ++ warn "error bind mounting btrfs boot subvol=$bootsv, from=$bindfrom" ++ umount "$tmpmnt/boot" 2>/dev/null ++ umount "$tmpmnt" 2>/dev/null ++ rmdir "$tmpmnt" 2>/dev/null ++ exit 1 ++ fi ++ elif ! mount -o subvol=$bootsv -t btrfs -U $bootuuid "$tmpmnt/boot" 2>/dev/null; then ++ warn "error mounting btrfs boot partition subvol=$bootsv, UUID=$bootuuid" ++ umount "$tmpmnt/boot" 2>/dev/null ++ umount "$tmpmnt" 2>/dev/null ++ rmdir "$tmpmnt" 2>/dev/null ++ exit 1 ++ fi ++ bootpart=$(grep " btrfs " /proc/self/mountinfo | grep " /$bootsv " | cut -d ' ' -f 10) ++ else ++ # non-btrfs partition or logical volume ++ linux_mount_boot $partition $tmpmnt ++ bootpart="${mountboot%% *}" ++ bootsv= ++ fi ++ ++ test="/usr/lib/linux-boot-probes/mounted/40grub2" ++ if [ -f $test ] && [ -x $test ]; then ++ debug "running $test $partition $bootpart $tmpmnt $type $subvol $bootsv" ++ if $test "$partition" "$bootpart" "$tmpmnt" "$type" "$subvol" "$bootsv"; then ++ debug "$test succeeded" ++ fi ++ fi ++ umount "$tmpmnt/boot" 2>/dev/null || true ++ if ! umount "$tmpmnt" 2>/dev/null; then ++ warn "problem umount $tmpmnt" ++ fi ++ rmdir "$tmpmnt" 2>/dev/null || true ++ ++ exit 0 ++fi ++ + if ! mapped="$(mapdevfs "$partition")"; then + log "Device '$partition' does not exist; skipping" + continue +Index: os-prober/linux-boot-probes/mounted/common/40grub2 +=================================================================== +--- os-prober.orig/linux-boot-probes/mounted/common/40grub2 ++++ os-prober/linux-boot-probes/mounted/common/40grub2 +@@ -2,17 +2,27 @@ + . /usr/share/os-prober/common.sh + set -e + ++# add support for btrfs with no separate /boot ++# that is, rootsv = bootsv + partition="$1" + bootpart="$2" + mpoint="$3" + type="$4" ++rootsv="$5" ++bootsv="$6" + + found_item=0 + + entry_result () { ++ if [ "x$type" = "xbtrfs" -a "$rootsv" = "$bootsv" ]; then ++ # trim off the leading subvol ++ kernelfile=$(echo "$kernel" | cut -d '/' -f 2- | cut -d '/' -f 2-) ++ else ++ kernelfile=$kernel ++ fi + if [ "$ignore_item" = 0 ] && \ + [ -n "$kernel" ] && \ +- [ -e "$mpoint/$kernel" ]; then ++ [ -e "$mpoint/$kernelfile" ]; then + result "$rootpart:$bootpart:$title:$kernel:$initrd:$parameters" + found_item=1 + fi +Index: os-prober/os-prober +=================================================================== +--- os-prober.orig/os-prober ++++ os-prober/os-prober +@@ -79,6 +79,9 @@ partitions () { + echo "$(LVM_SUPPRESS_FD_WARNINGS=1 log_output lvs --noheadings --separator : -o vg_name,lv_name | + sed "s|-|--|g;s|^[[:space:]]*\(.*\):\(.*\)$|/dev/mapper/\1-\2|")" + fi ++ ++ # now lets make sure we got all of the btrfs partitions and disks ++ blkid | grep btrfs | cut -d ':' -f 1 + } + + parse_proc_swaps () { +@@ -137,6 +140,8 @@ if [ -f /proc/mdstat ] ; then + grep "^md" /proc/mdstat | parse_proc_mdstat >"$OS_PROBER_TMP/raided-map" || true + fi + ++: >"$OS_PROBER_TMP/btrfs-vols" ++ + for partition in $(partitions); do + if ! mapped="$(mapdevfs "$partition")"; then + log "Device '$partition' does not exist; skipping" +@@ -155,7 +160,26 @@ for partition in $(partitions); do + continue + fi + +- if ! grep -q "^$mapped " "$OS_PROBER_TMP/mounted-map" ; then ++ # do btrfs processing here; both mounted and unmounted will ++ # be handled by 50mounted-tests so we can do a subvol only once. ++ type=$(blkid -o value -s TYPE $mapped || true) ++ if [ "$type" = btrfs ]; then ++ uuid=$(blkid -o value -s UUID $mapped) ++ if grep -q "^$uuid" "$OS_PROBER_TMP/btrfs-vols" ; then ++ continue ++ fi ++ debug "btrfs volume uuid=$uuid partition=$partition" ++ echo "$uuid" >>"$OS_PROBER_TMP/btrfs-vols" ++ test="/usr/lib/os-probes/50mounted-tests" ++ if [ -f "$test" ] && [ -x "$test" ]; then ++ debug "running $test on btrfs $partition" ++ if "$test" btrfs "$uuid" "$partition"; then ++ debug "os detected by $test" ++ continue ++ fi ++ fi ++ ++ elif ! grep -q "^$mapped " "$OS_PROBER_TMP/mounted-map" ; then + for test in /usr/lib/os-probes/*; do + if [ -f "$test" ] && [ -x "$test" ]; then + debug "running $test on $partition" +Index: os-prober/os-probes/common/50mounted-tests +=================================================================== +--- os-prober.orig/os-probes/common/50mounted-tests ++++ os-prober/os-probes/common/50mounted-tests +@@ -19,7 +19,19 @@ do_unmount() { + rmdir "$tmpmnt" || true + } + +-types="$(fs_type "$partition")" ++if [ "x$1" = xbtrfs ]; then ++ types=btrfs ++ if [ -z "$2" -o -z "$3" ]; then ++ debug "missing btrfs parameters, exiting" ++ exit 1 ++ fi ++ UUID="$2" ++ BTRFSDEV="$3" ++else ++ partition="$1" ++ types="$(fs_type "$partition")" ++fi ++ + if [ "$types" = NOT-DETECTED ]; then + debug "$1 type not recognised; skipping" + exit 0 +@@ -66,6 +78,76 @@ if [ ! -d "$tmpmnt" ]; then + fi + + mounted= ++ ++# all btrfs processing here. Handle both unmounted and ++# mounted subvolumes. ++if [ "$types" = btrfs ]; then ++ partition="$BTRFSDEV" ++ debug "begin btrfs processing for $UUID" ++ # note that the btrfs volume must not be mounted ro ++ if mount -t btrfs -U "$UUID" "$tmpmnt" 2>/dev/null; then ++ debug "btrfs volume $UUID mounted" ++ else ++ warn "cannot mount btrfs volume $UUID, exiting" ++ rmdir "$tmpmnt" || true ++ exit 1 ++ fi ++ # besides regular subvols, get ro and snapshot so thet can be excluded ++ subvols=$(btrfs subvolume list "$tmpmnt" | cut -d ' ' -f 9) ++ rosubvols=$(btrfs subvolume list -r "$tmpmnt" | cut -d ' ' -f 9) ++ sssubvols=$(btrfs subvolume list -s "$tmpmnt" | cut -d ' ' -f 14) ++ if ! umount "$tmpmnt"; then ++ warn "failed to umount btrfs volume on $tmpmnt" ++ rmdir "$tmpmnt" || true ++ exit 1 ++ fi ++ if [ -z "$subvols" ]; then ++ debug "no subvols found on btrfs volume $UUID" ++ exit 1 ++ fi ++ found= ++ for subvol in $subvols; do ++ debug "begin btrfs processing for $UUID subvol=$subvol" ++ if echo "$rosubvols" | grep -q -x "$subvol"; then ++ continue ++ fi ++ if echo "$sssubvols" | grep -q -x "$subvol"; then ++ continue ++ fi ++ mounted= ++ mpoint="$(grep btrfs /proc/self/mountinfo | grep "$partition " | grep "/$subvol " | cut -d ' ' -f 5)" ++ if [ -n "$mpoint" ]; then ++ if [ "x$mpoint" = "x/" ]; then ++ continue # this is the root for the running system ++ fi ++ mounted=1 ++ else ++ # again, do not mount btrfs ro ++ mount -t btrfs -o subvol="$subvol" -U "$UUID" "$tmpmnt" ++ mpoint="$tmpmnt" ++ fi ++ test="/usr/lib/os-probes/mounted/90linux-distro" ++ if [ -f "$test" ] && [ -x "$test" ]; then ++ debug "running subtest $test" ++ if "$test" "$partition" "$mpoint" btrfs "UUID=$UUID" "subvol=$subvol"; then ++ debug "os found by subtest $test on subvol $subvol" ++ found=1 ++ fi ++ fi ++ if [ -z "$mounted" ]; then ++ if ! umount "$tmpmnt"; then ++ warn "failed to umount $tmpmnt" ++ fi ++ fi ++ done ++ rmdir "$tmpmnt" || true ++ if [ "$found" ]; then ++ exit 0 ++ else ++ exit 1 ++ fi ++fi ++ + if type grub2-mount >/dev/null 2>&1 && \ + type grub2-probe >/dev/null 2>&1 && \ + grub2-mount "$partition" "$tmpmnt" 2>/dev/null; then +Index: os-prober/os-probes/mounted/common/90linux-distro +=================================================================== +--- os-prober.orig/os-probes/mounted/common/90linux-distro ++++ os-prober/os-probes/mounted/common/90linux-distro +@@ -7,6 +7,8 @@ set -e + partition="$1" + dir="$2" + type="$3" ++uuid="$4" ++subvol="$5" + + # This test is inaccurate, but given separate / and /boot partitions and the + # fact that only some architectures have ld-linux.so, I can't see anything +@@ -143,7 +145,11 @@ if (ls "$dir"/lib*/ld*.so* && [ -d "$dir + fi + + label="$(count_next_label "$short")" +- result "$partition:$long:$label:linux" ++ if [ "x$type" = "xbtrfs" -a "x$uuid" != "x" -a "x$subvol" != "x" ]; then ++ result "$partition:$long:$label:linux:$type:$uuid:$subvol" ++ else ++ result "$partition:$long:$label:linux" ++ fi + exit 0 + else + exit 1 +Index: os-prober/README.btrfs +=================================================================== +--- /dev/null ++++ os-prober/README.btrfs +@@ -0,0 +1,15 @@ ++BTRFS is a new filesystem which combines the filesystem with logical volume ++management (subvolumes). For further information, see: ++ https://btrfs.wiki.kernel.org/index.php/Main_Page ++ https://btrfs.wiki.kernel.org/index.php/FAQ ++ ++In order to support BTRFS, a number of changes were necessary to os-prober, ++os-probes/common/50mounted-tests, os-probes/mounted/common/90linux-distro, ++linux-boot-prober, and linux-boot-probes/common/50mounted-tests. ++ ++The biggest impact will be to grub2 where there is additional information ++output by os-prober and where, if a BTRFS subvolume is being used for root, ++the parameters for linux-boot-prober have changed. ++ ++Sun 30 Dec 2012 11:49:52 AM EST Gene Czarcinski <gene@czarc.net> ++ |