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@ -51,7 +51,7 @@ SNAPSHOTS_OLD=''
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print_usage ()
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print_usage ()
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{
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{
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echo "Usage: $0 [options] [-l label] <'//' | name [name...]>
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echo "Usage: $0 [options] [-l label] <'//' | name [name...]>
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--default-exclude Exclude objects if com.sun:auto-snapshot is unset.
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--default-exclude Exclude datasets if com.sun:auto-snapshot is unset.
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-d, --debug Print debugging messages.
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-d, --debug Print debugging messages.
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-e, --event=EVENT Set the com.sun:auto-snapshot-desc property to EVENT.
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-e, --event=EVENT Set the com.sun:auto-snapshot-desc property to EVENT.
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-n, --dry-run Print actions without actually doing anything.
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-n, --dry-run Print actions without actually doing anything.
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@ -67,7 +67,7 @@ print_usage ()
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-g, --syslog Write messages into the system log.
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-g, --syslog Write messages into the system log.
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-r, --recursive Snapshot named filesystem and all descendants.
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-r, --recursive Snapshot named filesystem and all descendants.
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-v, --verbose Print info messages.
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-v, --verbose Print info messages.
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name Filesystem and volume names, or '//' for all ZFS objects.
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name Filesystem and volume names, or '//' for all ZFS datasets.
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"
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"
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}
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}
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@ -256,7 +256,7 @@ do
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while test "${#opt_prefix}" -gt '0'
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while test "${#opt_prefix}" -gt '0'
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do
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do
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case $opt_prefix in
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case $opt_prefix in
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([![:alnum:]_-.:\ ]*)
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([![:alnum:]_.:\ -]*)
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print_log error "The $1 parameter must be alphanumeric."
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print_log error "The $1 parameter must be alphanumeric."
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exit 130
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exit 130
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;;
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;;
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@ -278,7 +278,7 @@ do
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;;
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;;
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(--sep)
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(--sep)
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case "$2" in
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case "$2" in
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([[:alnum:]_-.:\ ])
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([[:alnum:]_.:\ -])
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:
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:
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;;
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;;
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('')
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('')
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@ -369,15 +369,15 @@ ZPOOLS_NOTREADY=$(echo "$ZFS_STATUS" | awk -F ': ' \
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$1 ~ /^ *state$/ && $2 !~ /ONLINE|DEGRADED/ { print pool } ' \
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$1 ~ /^ *state$/ && $2 !~ /ONLINE|DEGRADED/ { print pool } ' \
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| sort)
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| sort)
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# Get a list of objects for which snapshots are explicitly disabled.
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# Get a list of datasets for which snapshots are explicitly disabled.
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NOAUTO=$(echo "$ZFS_LIST" | awk -F '\t' \
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NOAUTO=$(echo "$ZFS_LIST" | awk -F '\t' \
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'tolower($2) ~ /false/ || tolower($3) ~ /false/ {print $1}')
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'tolower($2) ~ /false/ || tolower($3) ~ /false/ {print $1}')
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# If the --default-exclude flag is set, then exclude all objects that lack
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# If the --default-exclude flag is set, then exclude all datasets that lack
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# an explicit com.sun:auto-snapshot* property. Otherwise, include them.
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# an explicit com.sun:auto-snapshot* property. Otherwise, include them.
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if [ -n "$opt_default_exclude" ]
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if [ -n "$opt_default_exclude" ]
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then
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then
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# Get a list of objects for which snapshots are explicitly enabled.
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# Get a list of datasets for which snapshots are explicitly enabled.
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CANDIDATES=$(echo "$ZFS_LIST" | awk -F '\t' \
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CANDIDATES=$(echo "$ZFS_LIST" | awk -F '\t' \
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'tolower($2) ~ /true/ || tolower($3) ~ /true/ {print $1}')
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'tolower($2) ~ /true/ || tolower($3) ~ /true/ {print $1}')
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else
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else
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@ -386,20 +386,20 @@ else
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'tolower($2) !~ /false/ && tolower($3) !~ /false/ {print $1}')
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'tolower($2) !~ /false/ && tolower($3) !~ /false/ {print $1}')
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fi
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fi
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# Initialize the list of objects that will get a recursive snapshot.
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# Initialize the list of datasets that will get a recursive snapshot.
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TARGETS_RECURSIVE=''
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TARGETS_RECURSIVE=''
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# Initialize the list of objects that will get a non-recursive snapshot.
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# Initialize the list of datasets that will get a non-recursive snapshot.
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TARGETS_REGULAR=''
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TARGETS_REGULAR=''
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for ii in $CANDIDATES
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for ii in $CANDIDATES
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do
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do
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# Qualify object names so variable globbing works properly.
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# Qualify dataset names so variable globbing works properly.
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# Suppose ii=tanker/foo and jj=tank sometime during the loop.
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# Suppose ii=tanker/foo and jj=tank sometime during the loop.
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# Just testing "$ii" != ${ii#$jj} would incorrectly match.
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# Just testing "$ii" != ${ii#$jj} would incorrectly match.
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iii="$ii/"
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iii="$ii/"
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# Exclude objects that are not named on the command line.
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# Exclude datasets that are not named on the command line.
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IN_ARGS='0'
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IN_ARGS='0'
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for jj in "$@"
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for jj in "$@"
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do
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do
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@ -413,13 +413,13 @@ do
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continue
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continue
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fi
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fi
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# Exclude objects in pools that cannot do a snapshot.
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# Exclude datasets in pools that cannot do a snapshot.
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for jj in $ZPOOLS_NOTREADY
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for jj in $ZPOOLS_NOTREADY
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do
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do
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# Ibid regarding iii.
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# Ibid regarding iii.
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jjj="$jj/"
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jjj="$jj/"
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# Check whether the pool name is a prefix of the object name.
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# Check whether the pool name is a prefix of the dataset name.
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if [ "$iii" != "${iii#$jjj}" ]
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if [ "$iii" != "${iii#$jjj}" ]
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then
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then
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print_log info "Excluding $ii because pool $jj is not ready."
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print_log info "Excluding $ii because pool $jj is not ready."
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@ -427,13 +427,13 @@ do
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fi
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fi
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done
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done
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# Exclude objects in scrubbing pools if the --skip-scrub flag is set.
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# Exclude datasets in scrubbing pools if the --skip-scrub flag is set.
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test -n "$opt_skip_scrub" && for jj in $ZPOOLS_SCRUBBING
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test -n "$opt_skip_scrub" && for jj in $ZPOOLS_SCRUBBING
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do
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do
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# Ibid regarding iii.
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# Ibid regarding iii.
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jjj="$jj/"
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jjj="$jj/"
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# Check whether the pool name is a prefix of the object name.
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# Check whether the pool name is a prefix of the dataset name.
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if [ "$iii" != "${iii#$jjj}" ]
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if [ "$iii" != "${iii#$jjj}" ]
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then
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then
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print_log info "Excluding $ii because pool $jj is scrubbing."
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print_log info "Excluding $ii because pool $jj is scrubbing."
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@ -449,14 +449,14 @@ do
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# The --recusive switch only matters for non-wild arguments.
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# The --recusive switch only matters for non-wild arguments.
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if [ -z "$opt_recursive" -a "$1" != '//' ]
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if [ -z "$opt_recursive" -a "$1" != '//' ]
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then
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then
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# Snapshot this object non-recursively.
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# Snapshot this dataset non-recursively.
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print_log debug "Including $ii for regular snapshot."
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print_log debug "Including $ii for regular snapshot."
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TARGETS_REGULAR="${TARGETS_REGULAR:+$TARGETS_REGULAR }$ii" # nb: \t
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TARGETS_REGULAR="${TARGETS_REGULAR:+$TARGETS_REGULAR }$ii" # nb: \t
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continue 2
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continue 2
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# Check whether the candidate name is a prefix of any excluded object name.
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# Check whether the candidate name is a prefix of any excluded dataset name.
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elif [ "$jjj" != "${jjj#$iii}" ]
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elif [ "$jjj" != "${jjj#$iii}" ]
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then
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then
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# Snapshot this object non-recursively.
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# Snapshot this dataset non-recursively.
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print_log debug "Including $ii for regular snapshot."
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print_log debug "Including $ii for regular snapshot."
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TARGETS_REGULAR="${TARGETS_REGULAR:+$TARGETS_REGULAR }$ii" # nb: \t
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TARGETS_REGULAR="${TARGETS_REGULAR:+$TARGETS_REGULAR }$ii" # nb: \t
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continue 2
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continue 2
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@ -468,7 +468,7 @@ do
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# Ibid regarding iii.
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# Ibid regarding iii.
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jjj="$jj/"
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jjj="$jj/"
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# Check whether any included object is a prefix of the candidate name.
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# Check whether any included dataset is a prefix of the candidate name.
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if [ "$iii" != "${iii#$jjj}" ]
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if [ "$iii" != "${iii#$jjj}" ]
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then
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then
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print_log debug "Excluding $ii because $jj includes it recursively."
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print_log debug "Excluding $ii because $jj includes it recursively."
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