RSYNC=${RSYNC:-rsync}
ECHO=echo
LFS=${LFS:-lfs}
+LFS_SIZE_OPT="-s"
usage() {
cat -- <<USAGE 1>&2
-usage: lfs_migrate [-h] [-l] [-n] [-R] [-s] [-y] [file|dir ...]
+usage: lfs_migrate [-c <stripe_count>] [-h] [-l] [-n] [-q] [-R] [-s] [-y] [-0]
+ [file|dir ...]
+ -c <stripe_count>
+ restripe file using the specified stripe count
-h show this usage message
-l migrate files with hard links (skip by default)
-n only print the names of files to be migrated
-R restripe file using default directory striping
-s skip file data comparison after migrate
-y answer 'y' to usage question
+ -0 input file names on stdin are separated by a null character
+
+The -c <stripe_count> option may not be specified at the same time as
+the -R option.
If a directory is an argument, all files in the directory are migrated.
If no file/directory is given, the file list is read from standard input.
-e.g.: lfs_migrate /mnt/lustre/file
+e.g.: lfs_migrate /mnt/lustre/dir
lfs find /test -O test-OST0004 -size +4G | lfs_migrate -y
USAGE
exit 1
}
OPT_CHECK=y
+OPT_STRIPE_COUNT=""
-while getopts "chlnqRsy" opt $*; do
+while getopts "c:hlnqRsy0" opt $*; do
case $opt in
- c) echo "'-c' option deprecated, checking enabled by default" 1>&2;;
+ c) OPT_STRIPE_COUNT=$OPTARG;;
l) OPT_NLINK=y;;
n) OPT_DRYRUN=n; OPT_YES=y;;
q) ECHO=:;;
R) OPT_RESTRIPE=y;;
s) OPT_CHECK="";;
y) OPT_YES=y;;
+ 0) OPT_NULL=y;;
h|\?) usage;;
esac
done
shift $((OPTIND - 1))
+if [ "$OPT_STRIPE_COUNT" -a "$OPT_RESTRIPE" ]; then
+ echo ""
+ echo "$(basename $0) error: The -c <stripe_count> option may not" 1>&2
+ echo "be specified at the same time as the -R option." 1>&2
+ exit 1
+fi
+
if [ -z "$OPT_YES" ]; then
echo ""
echo "lfs_migrate is currently NOT SAFE for moving in-use files." 1>&2
# If rsync copies lustre xattrs in the future, then we can skip lfs (bug 22189)
strings $(which $RSYNC) 2>&1 | grep -q lustre && LFS=:
+# rsync creates its temporary files with lenient permissions, even if
+# permissions on the original files are more strict. Tighten umask here
+# to avoid the brief window where unprivileged users might be able to
+# access the temporary file.
+umask 0077
+
+# This is needed for 1.8 Interoperability and can be removed in the future
+$LFS getstripe --help 2>&1 | grep -q stripe-size && LFS_SIZE_OPT="-S"
+
lfs_migrate() {
- while read OLDNAME; do
+ local RSYNC_MODE=false
+
+ while IFS='' read -d '' OLDNAME; do
$ECHO -n "$OLDNAME: "
# avoid duplicate stat if possible
- TYPE_LINK=($(stat -c "%h %F" "$OLDNAME" || true))
+ TYPE_LINK=($(LANG=C stat -c "%h %F" "$OLDNAME" || true))
# skip non-regular files, since they don't have any objects
# and there is no point in trying to migrate them.
continue
fi
-
if [ "$OPT_RESTRIPE" ]; then
UNLINK=""
else
# (i.e. before the file data, so that it preserves striping)
# then we don't need to do this getstripe/mktemp stuff.
UNLINK="-u"
- COUNT=$($LFS getstripe -c "$OLDNAME" 2> /dev/null)
- SIZE=$($LFS getstripe -S "$OLDNAME" 2> /dev/null)
+
+ [ "$OPT_STRIPE_COUNT" ] && COUNT=$OPT_STRIPE_COUNT ||
+ COUNT=$($LFS getstripe -c "$OLDNAME" \
+ 2> /dev/null)
+ SIZE=$($LFS getstripe $LFS_SIZE_OPT "$OLDNAME" \
+ 2> /dev/null)
+
[ -z "$COUNT" -o -z "$SIZE" ] && UNLINK=""
+ SIZE=${LFS_SIZE_OPT}${SIZE}
fi
+
+ # first try to migrate inside lustre
+ # if failed go back to old rsync mode
+ if [[ $RSYNC_MODE == false ]]; then
+ if $LFS migrate -c${COUNT} ${SIZE} "$OLDNAME"; then
+ $ECHO "done"
+ continue
+ else
+ echo "falling back to rsync-based migration"
+ RSYNC_MODE=true
+ fi
+ fi
+
NEWNAME=$(mktemp $UNLINK "$OLDNAME.tmp.XXXXXX")
if [ $? -ne 0 -o -z "$NEWNAME" ]; then
echo -e "\r$OLDNAME: can't make temp file, skipped" 1>&2
continue
fi
- [ "$UNLINK" ] && $LFS setstripe -c${COUNT} -S${SIZE} "$NEWNAME"
+ [ "$UNLINK" ] && $LFS setstripe -c${COUNT} ${SIZE} "$NEWNAME"
# we use --inplace, since we created our own temp file already
if ! $RSYNC -a --inplace $RSYNC_OPTS "$OLDNAME" "$NEWNAME";then
}
if [ "$#" -eq 0 ]; then
- lfs_migrate
+ if [ "$OPT_NULL" ]; then
+ lfs_migrate
+ else
+ tr '\n' '\0' | lfs_migrate
+ fi
else
while [ "$1" ]; do
if [ -d "$1" ]; then
- lfs find "$1" -type f | lfs_migrate
+ lfs find "$1" -type f -print0 | lfs_migrate
else
- echo $1 | lfs_migrate
+ echo -en "$1\0" | lfs_migrate
fi
shift
done
git://git.whamcloud.com / fs / lustre-release.git / blobdiff