mirror of
https://github.com/openzfs/zfs.git
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b19477898c
This commit refactors the systemd mount generators and makes the
following major changes:
- The generator now generates units for datasets marked canmount=noauto,
too. These units are NOT WantedBy local-fs.target.
If there are multiple noauto datasets for a path, no noauto unit will
be created. Datasets with canmount=on are prioritized.
- Introduces handling of new user properties which are now included in
the zfs-list.cache files:
- org.openzfs.systemd:requires:
List of units to require for this mount unit
- org.openzfs.systemd:requires-mounts-for:
List of mounts to require by this mount unit
- org.openzfs.systemd:before:
List of units to order after this mount unit
- org.openzfs.systemd:after:
List of units to order before this mount unit
- org.openzfs.systemd:wanted-by:
List of units to add a Wants dependency on this mount unit to
- org.openzfs.systemd:required-by:
List of units to add a Requires dependency on this mount unit to
- org.openzfs.systemd:nofail:
Toggles between a wants and a requires dependency.
- org.openzfs.systemd:ignore:
Do not generate a mount unit for this dataset.
Consult the updated man page for detailed documentation.
- Restructures and extends the zfs-mount-generator(8) man page with the
above properties, information on unit ordering and a license header.
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Antonio Russo <antonio.e.russo@gmail.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: InsanePrawn <insane.prawny@gmail.com>
Closes #9649
86 lines
2.4 KiB
Bash
Executable File
86 lines
2.4 KiB
Bash
Executable File
#!/bin/sh
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#
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# Track changes to enumerated pools for use in early-boot
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set -ef
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FSLIST_DIR="@sysconfdir@/zfs/zfs-list.cache"
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FSLIST_TMP="@runstatedir@/zfs-list.cache.new"
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FSLIST="${FSLIST_DIR}/${ZEVENT_POOL}"
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# If the pool specific cache file is not writeable, abort
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[ -w "${FSLIST}" ] || exit 0
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[ -f "${ZED_ZEDLET_DIR}/zed.rc" ] && . "${ZED_ZEDLET_DIR}/zed.rc"
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. "${ZED_ZEDLET_DIR}/zed-functions.sh"
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zed_exit_if_ignoring_this_event
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zed_check_cmd "${ZFS}" sort diff grep
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# If we are acting on a snapshot, we have nothing to do
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printf '%s' "${ZEVENT_HISTORY_DSNAME}" | grep '@' && exit 0
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# We obtain a lock on zfs-list to avoid any simultaneous writes.
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# If we run into trouble, log and drop the lock
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abort_alter() {
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zed_log_msg "Error updating zfs-list.cache!"
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zed_unlock zfs-list
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}
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finished() {
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zed_unlock zfs-list
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trap - EXIT
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exit 0
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}
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case "${ZEVENT_HISTORY_INTERNAL_NAME}" in
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create|"finish receiving"|import|destroy|rename)
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;;
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export)
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zed_lock zfs-list
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trap abort_alter EXIT
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echo > "${FSLIST}"
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finished
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;;
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set|inherit)
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# Only act if one of the tracked properties is altered.
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case "${ZEVENT_HISTORY_INTERNAL_STR%%=*}" in
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canmount|mountpoint|atime|relatime|devices|exec|readonly| \
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setuid|nbmand|encroot|keylocation|org.openzfs.systemd:requires| \
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org.openzfs.systemd:requires-mounts-for| \
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org.openzfs.systemd:before|org.openzfs.systemd:after| \
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org.openzfs.systemd:wanted-by|org.openzfs.systemd:required-by| \
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org.openzfs.systemd:nofail|org.openzfs.systemd:ignore \
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) ;;
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*) exit 0 ;;
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esac
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;;
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*)
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# Ignore all other events.
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exit 0
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;;
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esac
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zed_lock zfs-list
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trap abort_alter EXIT
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PROPS="name,mountpoint,canmount,atime,relatime,devices,exec\
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,readonly,setuid,nbmand,encroot,keylocation\
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,org.openzfs.systemd:requires,org.openzfs.systemd:requires-mounts-for\
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,org.openzfs.systemd:before,org.openzfs.systemd:after\
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,org.openzfs.systemd:wanted-by,org.openzfs.systemd:required-by\
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,org.openzfs.systemd:nofail,org.openzfs.systemd:ignore"
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"${ZFS}" list -H -t filesystem -o $PROPS -r "${ZEVENT_POOL}" > "${FSLIST_TMP}"
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# Sort the output so that it is stable
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sort "${FSLIST_TMP}" -o "${FSLIST_TMP}"
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# Don't modify the file if it hasn't changed
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diff -q "${FSLIST_TMP}" "${FSLIST}" || mv "${FSLIST_TMP}" "${FSLIST}"
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rm -f "${FSLIST_TMP}"
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finished
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