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106 lines
2.5 KiB
106 lines
2.5 KiB
#!/bin/sh |
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. /lib/dracut-lib.sh |
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PATH=$PATH:/sbin:/usr/sbin |
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# Huh? Empty $1? |
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[ -z "$1" ] && exit 1 |
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# Huh? Empty $2? |
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[ -z "$2" ] && exit 1 |
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# Huh? Empty $3? |
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[ -z "$3" ] && exit 1 |
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# root is in the form root=nbd:srv:port[:fstype[:rootflags[:nbdopts]]] |
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netif="$1" |
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root="$2" |
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NEWROOT="$3" |
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# If it's not nbd we don't continue |
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[ "${root%%:*}" = "nbd" ] || return |
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root=${root#nbd:} |
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nbdserver=${root%%:*}; root=${root#*:} |
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nbdport=${root%%:*}; root=${root#*:} |
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nbdfstype=${root%%:*}; root=${root#*:} |
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nbdflags=${root%%:*} |
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nbdopts=${root#*:} |
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if [ "$nbdopts" = "$nbdflags" ]; then |
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unset nbdopts |
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fi |
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if [ "$nbdflags" = "$nbdfstype" ]; then |
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unset nbdflags |
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fi |
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if [ "$nbdfstype" = "$nbdport" ]; then |
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unset nbdfstype |
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fi |
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if [ -z "$nbdfstype" ]; then |
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nbdfstype=auto |
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fi |
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# look through the NBD options and pull out the ones that need to |
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# go before the host etc. Append a ',' so we know we terminate the loop |
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nbdopts=${nbdopts}, |
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while [ -n "$nbdopts" ]; do |
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f=${nbdopts%%,*} |
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nbdopts=${nbdopts#*,} |
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if [ -z "$f" ]; then |
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break |
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fi |
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if [ -z "${f%bs=*}" -o -z "${f%timeout=*}" ]; then |
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preopts="$preopts $f" |
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continue |
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fi |
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opts="$opts $f" |
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done |
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# look through the flags and see if any are overridden by the command line |
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nbdflags=${nbdflags}, |
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while [ -n "$nbdflags" ]; do |
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f=${nbdflags%%,*} |
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nbdflags=${nbdflags#*,} |
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if [ -z "$f" ]; then |
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break |
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fi |
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if [ "$f" = "ro" -o "$f" = "rw" ]; then |
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nbdrw=$f |
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continue |
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fi |
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fsopts=${fsopts+$fsopts,}$f |
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done |
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getarg ro && nbdrw=ro |
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getarg rw && nbdrw=rw |
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fsopts=${fsopts+$fsopts,}${nbdrw} |
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# XXX better way to wait for the device to be made? |
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i=0 |
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while [ ! -b /dev/nbd0 ]; do |
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[ $i -ge 20 ] && exit 1 |
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if [ $UDEVVERSION -ge 143 ]; then |
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udevadm settle --exit-if-exists=/dev/nbd0 |
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else |
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sleep 0.1 |
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fi |
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i=$(( $i + 1)) |
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done |
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nbd-client $preopts "$nbdserver" "$nbdport" /dev/nbd0 $opts || exit 1 |
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# If we didn't get a root= on the command line, then we need to |
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# add the udev rules for mounting the nbd0 device |
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if [ ! -e /etc/udev/rules.d/99-mount.rules ]; then |
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echo '[ -e /dev/root ] || { info=$(udevadm info --query=env --name=/dev/nbd0); [ -z "${info%%*ID_FS_TYPE*}" ] && { ln -s /dev/nbd0 /dev/root 2>/dev/null; :; };} && rm $job;' \ |
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> /initqueue-settled/nbd.sh |
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printf '/bin/mount -t %s -o %s %s %s\n' \ |
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"$nbdfstype" "$fsopts" /dev/nbd0 "$NEWROOT" \ |
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> /mount/01-$$-nbd.sh |
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fi |
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# NBD doesn't emit uevents when it gets connected, so kick it |
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echo change > /sys/block/nbd0/uevent |
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exit 0
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