holm/zfs-auto-snapshot
1
0
Fork 0
forked from extern/zfs-auto-snapshot
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Merge pull request #9 from mk01/zevo

Browse Source 
Zevo
This commit is contained in:
Darik Horn 2013-01-14 11:05:37 -08:00
commit 45edfd3e7c
1 changed files with 44 additions and 37 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

81
src/zfs-auto-snapshot.sh
View File

@ -107,7 +107,7 @@ print_usage ()
-R, --replication Use zfs's replication (zfs send -R) instead of simple send over newly created snapshots (check man zfs for details). -R, --replication Use zfs's replication (zfs send -R) instead of simple send over newly created snapshots (check man zfs for details).
-f is used automatically. -f is used automatically.
-v, --verbose Print info messages. -v, --verbose Print info messages.
-f, --force Passes -F argument to zfs receive -f, --force Passes -F argument to zfs receive (e.g. makes possible to overwrite remote filesystem during --send-full)
name Filesystem and volume names, or '//' for all ZFS datasets. name Filesystem and volume names, or '//' for all ZFS datasets.
" "
} }
@ -281,16 +281,14 @@ do_send ()
local REMOTEFS="$5" local REMOTEFS="$5"
local list_child=('') local list_child=('')
if [ "$SENDFLAGS" = "-R" ]; then if [ "$SENDFLAGS" = "-R" -a "$SENDTYPE" = "full" ]; then
# for full send with -R, target filesystem must be without snapshots including chilren as well # for full send with -R, target filesystem must be with no snapshots (including snapshots on child filesystems)
list_child=($(printf "%s\n" "${SNAPSHOTS_OLD_REM[@]}" | grep ^"$REMOTEFS" | grep @)) list_child=( $(printf "%s\n" "${SNAPSHOTS_OLD_REM[@]}" | grep ^"$REMOTEFS/" ) )
if [ "$SENDTYPE" = "full" ]; then
list_child=( "${list_child[@]}" $(printf "%s\n" "${ZFS_REMOTE_LIST[@]}" | grep ^"$REMOTEFS" | sort -r ))
fi
elif [ "$SENDTYPE" = "full" ]; then
list_child=( $(printf "%s\n" "${SNAPSHOTS_OLD_REM[@]}" | grep ^"$REMOTEFS@" ) )
fi fi
if [ "$SENDTYPE" = "full" ]; then
list_child=( ${list_child[@]} $(printf "%s\n" "${SNAPSHOTS_OLD_REM[@]}" | grep ^"$REMOTEFS@" ) )
fi
for ll in ${list_child[@]}; do for ll in ${list_child[@]}; do
if do_delete "remote" "$ll" ""; then if do_delete "remote" "$ll" ""; then
continue continue
@ -341,7 +339,14 @@ do_snapshots () # properties, flags, snapname, oldglob, [targets...]
LAST_REMOTE=$(printf "%s\n" ${SNAPSHOTS_OLD_REM[@]} | grep ^$opt_sendprefix/$ii@ | grep -m1 . | awk -F'@' '{print $2}') LAST_REMOTE=$(printf "%s\n" ${SNAPSHOTS_OLD_REM[@]} | grep ^$opt_sendprefix/$ii@ | grep -m1 . | awk -F'@' '{print $2}')
# remote filesystem just created. if -R run # in case of -R and incremental send, receiving side needs to have $LAST_REMOTE snapshot for each replicated filesystem
if [ "$FLAGS" = "-r" ]; then
snaps_needed=$(( $(printf "%s\n" ${ZFS_LIST_LOC[@]} | grep ^"$ii/") + 1 ))
else
snaps_needed='1'
fi
# remote filesystem just created. if -R run
if ! is_member "${CREATED_TARGETS[*]}" "$opt_sendprefix/$ii" if ! is_member "${CREATED_TARGETS[*]}" "$opt_sendprefix/$ii"
then then
FALLBACK='2' FALLBACK='2'
@ -349,8 +354,8 @@ do_snapshots () # properties, flags, snapname, oldglob, [targets...]
then then
# no snapshot on remote # no snapshot on remote
FALLBACK='1' FALLBACK='1'
# last snapshot on remote is no more available on local, this applies both for -r and non -r runs elif [ "$snaps_needed" -ne $(printf "%s\n" ${SNAPSHOTS_OLD_REM[@]} | grep -c -e ^"$opt_sendprefix/$ii$SNexp@$LAST_REMOTE" ) -o \
elif [ $(printf "%s\n" "${SNAPSHOTS_OLD_REM[@]}" | grep -c -e ^$opt_sendprefix/$ii$SNexp@$LAST_REMOTE ) -ne $(printf "%s\n" "${SNAPSHOTS_OLD_LOC[@]}" | grep -c -e ^$ii$SNexp@$LAST_REMOTE ) ] "$snaps_needed" -ne $(printf "%s\n" ${SNAPSHOTS_OLD_LOC[@]} | grep -c -e ^"$ii$SNexp@$LAST_REMOTE" ) ]
then then
FALLBACK='3' FALLBACK='3'
else else
@ -365,10 +370,14 @@ do_snapshots () # properties, flags, snapname, oldglob, [targets...]
print_log info "Going back to full send, remote filesystem was just created: $ii" print_log info "Going back to full send, remote filesystem was just created: $ii"
;; ;;
(3) (3)
print_log info "Going back to full send, last snapshot on remote is not available on local: $opt_sendprefix/$ii@$LAST_REMOTE" if [ "$FLAGS" = "-r" ]; then
;; print_log info "Going back to full send, last snapshot on remote is not the last one for whole recursion: $opt_sendprefix/$ii@$LAST_REMOTE"
else
print_log info "Going back to full send, last snapshot on remote is not available on local: $opt_sendprefix/$ii@$LAST_REMOTE"
fi
;;
(0) (0)
do_send "incr" "$ii@$LAST_REMOTE" "$ii@$NAME" "$sFLAGS" "$opt_sendprefix/$ii" do_send "incr" "$ii@$LAST_REMOTE" "$ii@$NAME" "$sFLAGS" "$opt_sendprefix/$ii"
SND_RC="$?" SND_RC="$?"
;; ;;
esac esac
@ -412,7 +421,7 @@ do_snapshots () # properties, flags, snapname, oldglob, [targets...]
continue continue
elif [ "$sFLAGS" = "-R" ] elif [ "$sFLAGS" = "-R" ]
then then
print_log debug "Replication specified, snapshots were removed while sending." print_log debug "Replication specified, remote snapshots were removed while sending."
continue continue
elif [ "$opt_destroy" -eq '1' -a "$FALLBACK" -ne '0' -o "$opt_send" = "full" ] elif [ "$opt_destroy" -eq '1' -a "$FALLBACK" -ne '0' -o "$opt_send" = "full" ]
then then
@ -687,12 +696,12 @@ then
exit 133 exit 133
fi fi
if [ -f ${tmp_file_prefix%%X*}* ]; then if [ -f "${tmp_file_prefix%%X*}"* ]; then
print_log error "another copy is running ..." print_log error "another copy is running ..."
exit 99 exit 99
fi fi
LOCKFILE=`mktemp $tmp_file_prefix` LOCKFILE=$(mktemp $tmp_file_prefix)
trap "rm -f $LOCKFILE; exit $?" INT TERM EXIT trap "rm -f '$LOCKFILE'; exit $?" INT TERM EXIT
# Count the number of times '//' appears on the command line. # Count the number of times '//' appears on the command line.
SLASHIES='0' SLASHIES='0'
@ -819,32 +828,30 @@ do
fi fi
done done
for jj in $NOAUTO noauto_parent='0'
for jj in $NOAUTO
do do
# Ibid regarding iii. # Ibid regarding iii.
jjj="$jj/" jjj="$jj/"
# The --recursive switch only matters for non-wild arguments. if [ "$jjj" = "$iii" ]
if [ -z "$opt_recursive" -a "$1" != '//' ] then
then
# Snapshot this dataset non-recursively.
print_log debug "Including $ii for regular snapshot."
TARGETS_DREGULAR=( ${TARGETS_DREGULAR[@]} $( printf "%s\n" $ii))
continue 2
# Check whether the candidate name is excluded
elif [ "$jjj" = "$iii" ]
then
continue 2 continue 2
# Check whether the candidate name is a prefix of any excluded dataset name. # Check whether the candidate name is a prefix of any excluded dataset name.
elif [ "$jjj" != "${jjj#$iii}" ] elif [ "$jjj" != "${jjj#$iii}" ]
then then
# Snapshot this dataset non-recursively. noauto_parent='1' && break
print_log debug "Including $ii for regular snapshot." fi
TARGETS_DREGULAR=( ${TARGETS_DREGULAR[@]} $( printf "%s\n" $ii))
continue 2
fi
done done
# not scrubbing
if [ -z "$opt_recursive" -a "$1" != '//' -o "$noauto_parent" = '1' ]
then
print_log debug "Including $ii for regular snapshot."
TARGETS_DREGULAR=( ${TARGETS_DREGULAR[@]} $( printf "%s\n" $ii))
continue
fi
for jj in ${TARGETS_TMP_RECURSIVE[@]} for jj in ${TARGETS_TMP_RECURSIVE[@]}
do do
# Ibid regarding iii. # Ibid regarding iii.
@ -901,7 +908,7 @@ test -n "$opt_dry_run" \
# expand FS list if replication is not used # expand FS list if replication is not used
if [ "$opt_recursive" = ' ' -o "$1" = "//" ] if [ "$opt_recursive" = ' ' -o "$1" = "//" ]
then then
for ii in "${TARGETS_TMP_RECURSIVE[@]}"; do TARGETS_DRECURSIVE=( ${TARGETS_DRECURSIVE[@]} $(printf "%s\n" ${ZFS_LOCAL_LIST[@]} | grep ^$ii) ); done for ii in ${TARGETS_TMP_RECURSIVE[@]}; do TARGETS_DRECURSIVE=( ${TARGETS_DRECURSIVE[@]} $(printf "$ii\n") $(printf "%s\n" ${ZFS_LOCAL_LIST[@]} | grep ^"$ii/") ); done
else else
TARGETS_DRECURSIVE=( ${TARGETS_TMP_RECURSIVE[@]} ) TARGETS_DRECURSIVE=( ${TARGETS_TMP_RECURSIVE[@]} )
fi fi