Commit Graph

27 Commits

Author SHA1 Message Date
наб 5611bdc8f0 etc/systemd/zfs-mount-generator: output tweaks
git-diff--w-dirty, but:
  * zfs-load-key-$DSET.service -> zfs-load-key@$DSET.service
  * flattened set -eu into other /bin/sh flags
  * simpler (for 1 2 3 vs while [ counter ]; counter+=1) prompt loop
  * exec $ZFS where applicable

Reviewed-by: Antonio Russo <aerusso@aerusso.net>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: InsanePrawn <insane.prawny@gmail.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Issue #11915
Closes #11917
2021-05-27 08:49:26 -07:00
наб 5a1fb060fd etc/systemd/zfs-mount-generator: rewrite in C
A plain rewrite of the shell version, and generates identical
units, save for replacing some empty lines with nothing, having fewer
meaningless spaces in After=s and different spacing in the lock scripts,
for a clean git diff -w

This is a gain of anywhere from 0m0.336s vs 0m0.022s (15.27x)
to 0m0.202s vs 0m0.006s (33.67x), depending on the hardware,
a.k.a. from "absolutely unusable" to "perfectly fine"

This also properly deals with canmount=noauto units across multiple
pools

See PR for detailed timings (of an early version) and diffs

Reviewed-by: Antonio Russo <aerusso@aerusso.net>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: InsanePrawn <insane.prawny@gmail.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Issue #11915
Closes #11917
2021-05-27 08:45:51 -07:00
наб 44287ffa0d
etc/systemd/zfs-mount-generator: don't fail if no cached pools
If $FSLIST exists but is empty, the generator fails with
  sort: cannot read: '/etc/zfs/zfs-list.cache/*':
  No such file or directory

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #11915
2021-04-19 10:52:44 -07:00
Richard Laager 62663fb7ec Fix another dependency loop
zfs-load-key-DATASET.service was gaining an
After=systemd-journald.socket due to its stdout/stderr going to the
journal (which is the default).  systemd-journald.socket has an After
(via RequiresMountsFor=/run/systemd/journal) on -.mount.  If the root
filesystem is encrypted, -.mount gets an After
zfs-load-key-DATASET.service.

By setting stdout and stderr to null on the key load services, we avoid
this loop.

Reviewed-by: Antonio Russo <antonio.e.russo@gmail.com>
Reviewed-by: InsanePrawn <insane.prawny@gmail.com>
Signed-off-by: Richard Laager <rlaager@wiktel.com>
Closes #10356
Closes #10388
2020-08-28 10:17:14 -07:00
Richard Laager ec41cafee1 Fix a dependency loop
When generating units with zfs-mount-generator, if the pool is already
imported, zfs-import.target is not needed.  This avoids a dependency
loop on root-on-ZFS systems:
  systemd-random-seed.service After (via RequiresMountsFor)
  var-lib.mount After
  zfs-import.target After
  zfs-import-{cache,scan}.service After
  cryptsetup.service After
  systemd-random-seed.service

Reviewed-by: Antonio Russo <antonio.e.russo@gmail.com>
Reviewed-by: InsanePrawn <insane.prawny@gmail.com>
Signed-off-by: Richard Laager <rlaager@wiktel.com>
Closes #10388
2020-08-28 10:16:13 -07:00
Jean-Baptiste Lallement ceadc0dbbd Make unloading the key more robust
The unit was failing instead of stopping if someone manually unloaded
the key before stopping the unit (zfs unload-key is failing on an
unavailable key).
Follow a similar logic than for loading the key, checking for the key
status before unloading it.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Co-authored-by: Didier Roche <didrocks@ubuntu.com>
Signed-off-by: Didier Roche <didrocks@ubuntu.com>
Closes #10477
2020-07-19 10:04:14 -07:00
Jean-Baptiste Lallement b717f9b95e BindsTo dataset keyload unit to mount associate unit
We need a stronger dependency between the mount unit and its keyload unit
when we know that the dataset is encrypted.
If the keyload unit fails, Wants= will still try to mount the dataset,
which will then fail.
It’s better to show that the failure is due to a dependency failing, the
keyload unit, by tighting up the dependency. We can do this as we know
that we generate both units in the generator and so, it’s not an
optional dependency.
BindsTo enable as well that if the keyload unit fails at any point, the
associated mountpoint will be then unmounted.

Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Co-authored-by: Didier Roche <didrocks@ubuntu.com>
Signed-off-by: Didier Roche <didrocks@ubuntu.com>
Closes #10477
2020-07-19 10:03:48 -07:00
Jean-Baptiste Lallement de817cc7b7 Ensure mount unit pilots when its ZFS key is loaded
Drop Before=zfs.mount dependency explicity on generated key-load .service
unit.
Indeed, the associated mount unit is After=<dataset-key-load>.service.
This is thus the mount point which controls at what point it wants to be
mounted (Before=zfs-mount.service in stock generator), but this can be
an automount point, or triggered by another service.
This additional dependency from the key load service is not needed thus.

Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Co-authored-by: Didier Roche <didrocks@ubuntu.com>
Signed-off-by: Didier Roche <didrocks@ubuntu.com>
Closes #10477
2020-07-19 10:03:02 -07:00
Arvind Sankar 38e2e9ce83 Centralize variable substitution
A bunch of places need to edit files to incorporate the configured paths
i.e. bindir, sbindir etc. Move this logic into a common file.

Create arc_summary by copying arc_summary[23] as appropriate at build
time instead of install time.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
Closes #10559
2020-07-14 17:33:44 -07:00
Arvind Sankar 6b99fc0620 Fixes for make dist
Reduce the usage of EXTRA_DIST. If files are conditionally included in
_SOURCES, _HEADERS etc, automake is smart enough to dist all files that
could possibly be included, but this does not apply to EXTRA_DIST,
resulting in make dist depending on the configuration.

Add some files that were missing altogether in various Makefile's.

The changes to disted files in this commit (excluding deleted files):

+./cmd/zed/agents/README.md
+./etc/init.d/README.md
+./lib/libspl/os/freebsd/getexecname.c
+./lib/libspl/os/freebsd/gethostid.c
+./lib/libspl/os/freebsd/getmntany.c
+./lib/libspl/os/freebsd/mnttab.c
-./lib/libzfs/libzfs_core.pc
-./lib/libzfs/libzfs.pc
+./lib/libzfs/os/freebsd/libzfs_compat.c
+./lib/libzfs/os/freebsd/libzfs_fsshare.c
+./lib/libzfs/os/freebsd/libzfs_ioctl_compat.c
+./lib/libzfs/os/freebsd/libzfs_zmount.c
+./lib/libzutil/os/freebsd/zutil_compat.c
+./lib/libzutil/os/freebsd/zutil_device_path_os.c
+./lib/libzutil/os/freebsd/zutil_import_os.c
+./module/lua/README.zfs
+./module/os/linux/spl/README.md
+./tests/README.md
+./tests/zfs-tests/tests/functional/cli_root/zfs_clone/zfs_clone_rm_nested.ksh
+./tests/zfs-tests/tests/functional/cli_root/zfs_send/zfs_send_encrypted_unloaded.ksh
+./tests/zfs-tests/tests/functional/inheritance/README.config
+./tests/zfs-tests/tests/functional/inheritance/README.state
+./tests/zfs-tests/tests/functional/rsend/rsend_016_neg.ksh
+./tests/zfs-tests/tests/perf/fio/sequential_readwrite.fio

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
Closes #10501
2020-06-26 14:20:02 -07:00
Arvind Sankar 7513807320 Drop unnecessary srcdir paths
There's no need to specify the srcdir explicitly in _HEADERS and
EXTRA_DIST.

Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
Closes #10493
2020-06-24 18:20:18 -07:00
InsanePrawn ff2f960b24
Systemd mount generator: don't fail keyload from file if already loaded
Previously the generated keyload units for encryption roots with
keylocation=file://* didn't contain the code to detect if the key
was already loaded and would be marked failed in such situations.

Move the code to check whether the key is already loaded
from keylocation=prompt handling to general key loading code.

Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: InsanePrawn <insane.prawny@gmail.com>
Closes #10103
2020-03-09 11:09:09 -07:00
InsanePrawn ecbbdac799 Systemd mount generator: Generate noauto units; add control properties
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
2020-02-14 15:32:55 -08:00
InsanePrawn 9d2f3b7f94 Systemd mount generator: Silence shellcheck warnings
Silences a warning about an intentionally unquoted variable.
Fixes a warning caused by strings split across lines by slightly
refactoring keyloadcmd.

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
2020-02-14 15:32:33 -08:00
Richard Laager d1d65bb367
zfs-mount-generator: Fix escaping for /
The correct name for the mount unit for / is "-.mount", not ".mount".

Reviewed-by: InsanePrawn <insane.prawny@gmail.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Co-authored-by: Antonio Russo <antonio.e.russo@gmail.com>
Signed-off-by: Richard Laager <rlaager@wiktel.com>
Closes #9970
2020-02-13 11:55:59 -08:00
lorenz 028e3b3b1a Avoid here-documents in systemd mount generator
On some systems - openSUSE, for example - there is not yet a writeable
temporary file system available, so bash bails out with an error,

  'cannot create temp file for here-document: Read-only file system',

on the here documents in zfs-mount-generator. The simple fix is to
change these into a multi-line echo statement.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-By: Richard Laager <rlaager@wiktel.com>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Lorenz Hüdepohl <dev@stellardeath.org>
Closes #9802
2020-01-07 17:03:00 -08:00
InsanePrawn c940bf0c37 Fix encryption logic in systemd mount generator
Previously the generator would skip a dataset if it wasn't mountable by
'zfs mount -a' (legacy/none mountpoint, canmount off/noauto). This also
skipped the generation of key-load units for such datasets, breaking
the dependency handling for mountable child datasets.

Reviewed-by: Antonio Russo <antonio.e.russo@gmail.com>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Signed-off-by: InsanePrawn <insane.prawny@gmail.com>
Closes #9611
2019-11-27 10:54:49 -08:00
InsanePrawn 70d2dd922b Fix non-absolute path in systemd mount generator
Systemd will ignore units that try to execute programs from non-absolute
paths. Use hardcoded /bin/sh instead.

Reviewed-by: Antonio Russo <antonio.e.russo@gmail.com>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Signed-off-by: InsanePrawn <insane.prawny@gmail.com>
Closes #9611
2019-11-27 10:54:24 -08:00
InsanePrawn d8ce455c1e Fix small typo in systemd mount generator
Reviewed-by: Antonio Russo <antonio.e.russo@gmail.com>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Signed-off-by: InsanePrawn <insane.prawny@gmail.com>
Closes #9611
2019-11-27 10:53:37 -08:00
Witaut Bajaryn 6c7023a532 Skip loading already loaded key
Don't ask for the password / try to load the key if the key for the 
encryptionroot is already loaded.  The user might have loaded the key 
manually or by other means before the scripts get called.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tom Caputi <tcaputi@datto.com>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Signed-off-by: Witaut Bajaryn <vitaut.bayaryn@gmail.com>
Closes #9495
Closes #9529
2019-11-08 14:34:07 -08:00
Ryan Moeller 142f84dd19 Restore :: in Makefile.am
The double-colon looked like a typo, but it's actually an obscure
feature. Rules with :: may appear multiple times and are run
independently of one another in the order they appear. The use of ::
for distclean-local was conventional, not accidental.

Add comments to indicate the intentional use of double-colon rules.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <ryan@ixsystems.com>
Closes #9210
2019-08-26 11:48:31 -07:00
yshui 19d61d63fa zfs-mount-genrator: dependencies should be space-separated
Reviewed-by: Antonio Russo <antonio.e.russo@gmail.com>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
Closes #9174
2019-08-22 17:11:17 -07:00
Antonio Russo f88d069cbb systemd encryption key support
Modify zfs-mount-generator to produce a dependency on new
zfs-import-key-*.service units, dynamically created at boot to call
zfs load-key for the encryption root, before attempting to mount any
encrypted datasets.

These units are created by zfs-mount-generator, and RequiresMountsFor on
the keyfile, if present, or call systemd-ask-password if a passphrase is
requested.

This patch includes suggestions from @Fabian-Gruenbichler, @ryanjaeb and
@rlaager, as well an adaptation of @rlaager's script to retry on
incorrect password entry.

Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Antonio Russo <antonio.e.russo@gmail.com>
Closes #8750
Closes #8848
2019-07-15 16:31:47 -07:00
Antonio Russo 6aff30ad80 Fix zfs-mount-generator for datasets with spaces
Alternative implementation of @rlaager's original modification
of zfs-mount-generator fix, with @chrisrd's comments. Set
IFS to be only the tab character, matching our `-H` call in
`zfs list`, allowing spaces to appear in dataset names (and
mountpoints).

Also adds comments explaining our rationale.

Reviewed-by: Chris Dunlop <chris@onthe.net.au>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Antonio Russo <antonio.e.russo@gmail.com>
Closes #8708 
Closes #8718
2019-05-07 09:32:23 -07:00
Antonio Russo 7106b23640 Minor documentation, logging, and testing typos
This patch collects some minor inconsistencies and typos in the
documentation, logging and testing infrastructure.

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Antonio Russo <antonio.e.russo@gmail.com>
Closes #7608
2018-06-07 09:38:39 -07:00
Antonio Russo 68fded8146 Add canonical mount options zfs-mount-generator
lib/libzfs/libzfs_mount.c:zfs_add_options provides the canonical
mount options used by a `zfs mount` command. Because we cannot call
`zfs mount` directly from a systemd.mount unit, we mirror that logic
in zfs-mount-generator.

The zed script is updated to cache these properties as well.

Include a mini-tutorial in the manual page, properly substitute
configuration paths in zfs-mount-generator.8.in, and standardize the
Makefile.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Signed-off-by: Antonio Russo <antonio.e.russo@gmail.com>
Closes #7453
2018-05-11 12:44:14 -07:00
Antonio Russo 55d80e651a systemd mount generator and tracking ZEDLET
zfs-mount-generator implements the "systemd generator" protocol,
producing systemd.mount units from the cached outputs of zfs list,
during early boot, integrating with systemd.

Each pool has an indpendent cache of the command

  zfs list -H -oname,mountpoint,canmount -tfilesystem -r $pool

which is kept synchronized by the ZEDLET

  history_event-zfs-list-cacher.sh

Datasets not in the cache will be loaded later in the boot process by
zfs-mount.service, including pools without a cache.

Among other things, this allows for complex mount hierarchies.

Reviewed-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Antonio Russo <antonio.e.russo@gmail.com>
Closes #7329
2018-04-06 14:11:09 -07:00