Commit Graph

6370 Commits

Author SHA1 Message Date
Marcel Schilling
ce98ed25de
Fix dead links http://list.zfsonlinux.org
Originally, I wanted to point to directly to
https://zfsonlinux.topicbox.com/groups/zfs-discuss
as the text refers to that specific mailing list, but George Melikov
requested to change it to the general to give users the overview.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Marcel Schilling <marcel.schilling@uni-luebeck.de>
Closes #10367
Closes #10369
2020-05-26 15:09:25 -07:00
Brian Behlendorf
c946d5a913
ZTS: Fix zfs_mount.kshlib cleanup
Update cleanup_filesystem to use destroy_dataset when performing
cleanup.  This ensures the destroy is retried if the pool is busy
preventing occasional failures.

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Giuseppe Di Natale <guss80@gmail.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #10358
2020-05-23 17:13:42 -07:00
Brian Atkinson
fb822260b1
Gang ABD Type
Adding the gang ABD type, which allows for linear and scatter ABDs to
be chained together into a single ABD.

This can be used to avoid doing memory copies to/from ABDs. An example
of this can be found in vdev_queue.c in the vdev_queue_aggregate()
function.

Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Co-authored-by: Brian <bwa@clemson.edu>
Co-authored-by: Mark Maybee <mmaybee@cray.com>
Signed-off-by: Brian Atkinson <batkinson@lanl.gov>
Closes #10069
2020-05-20 18:06:09 -07:00
felixdoerre
501a1511ae
mount: use the mount syscall directly
Allow zfs datasets to be mounted on Linux without relying on the
invocation of an external processes.  This is the same behavior
which is implemented for FreeBSD.

Use of the libmount library was originally considered because it 
provides functionality to properly lock and update the /etc/mtab 
file.  However, these days /etc/mtab is typically a symlink to 
/proc/self/mounts so there's nothing to updated.  Therefore, we
call mount(2) directly and avoid any additional dependencies. 

If required the legacy behavior can be enabled by setting the 
ZFS_MOUNT_HELPER environment variable.  This may be needed in
environments where SELinux in enabled and the zfs binary does  
not have mount permission.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Felix Dörre <felix@dogcraft.de>
#10294
2020-05-20 18:02:41 -07:00
DeHackEd
57434abae6
Use boot_ncpus in place of max_ncpus in taskq_create
Due to hotplug support or BIOS bugs sometimes max_ncpus can be
an absurdly high value. I have a system with 32 cores/threads
but reports max_ncpus == 440. This many threads potentially
cripples the system during arc_prune floods for example.

boot_ncpus is the number of working CPUs when called so use
that instead.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: DHE <git@dehacked.net>
Closes #10282
2020-05-20 10:07:21 -07:00
Paul Dagnelie
de4f06c275
Small program that converts a dataset id and an object id to a path
Small program that converts a dataset id and an object id to a path

Reviewed-by: Prakash Surya <prakash.surya@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Signed-off-by: Paul Dagnelie <pcd@delphix.com>
Closes #10204
2020-05-20 10:05:33 -07:00
Ryan Moeller
7b0e39030c
freebsd: Correct the order of arguments to copyin() for Q_SETQUOTA
Sponsored by: DARPA
External-issue: https://reviews.freebsd.org/D24656
FreeBSD-commit: freebsd/freebsd@a431c095d3

Authored by: jhb <jhb@FreeBSD.org>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Ported-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Ryan Moeller <ryan@iXsystems.com>
Closes #10344
2020-05-19 16:45:25 -07:00
George Amanakis
7cd723e685
Fix gcc 10.1 stringop-truncation error
As we do not expect the destination of these strncpy calls to be NULL
terminated, substitute them with memcpy.

Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: George Amanakis <gamanakis@gmail.com>
Closes #10346
2020-05-19 14:24:10 -07:00
Kyle Evans
5b090d57d4
freebsd: return EISDIR for read(2) on directories
This is arguably a change for internal consistency within OpenZFS, as the
Linux implementation will reject read(2) on directories with EISDIR. It's
not unreasonable for read(2) to do something here on FreeBSD, but we don't
currently copy out anything useful anyways so start rejecting it with the
appropriate error.

Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Kyle Evans <kevans@FreeBSD.org>
Closes #10338
2020-05-16 10:12:01 -07:00
Ryan Moeller
d2782af461
Fix ZVOL_DIR
We only use ZVOL_DIR on FreeBSD, and on FreeBSD it isn't correct.

Move the definition to the file where it is needed, and define it as
/dev/zvol/.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <ryan@iXsystems.com>
Closes #10337
2020-05-16 10:10:38 -07:00
ColMelvin
4d6043f2b7
RPM: Remove old versions of DKMS on upgrade
Due to a mismatch between the text and a regex looking for that text,
the `%preuninstall` script would never run the `dkms remove` command
necessary to avoid corrupting the DKMS data configuration.  Increase
regex specificity to avoid this issue.

Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Chris Lindee <chris.lindee+github@gmail.com>
Closes: #9891
Closes #10327
2020-05-14 20:51:33 -07:00
Matthew Ahrens
1b9cd1a9d9
Fix error handling in receive_writer_thread()
If `receive_writer_thread()` gets an error from `receive_process_record()`,
it should be saved in `rwa->err` so that we will stop processing records,
and the main thread will notice that the receive has failed.

When an error is first encountered, this happens correctly.  However, if
there are more records to dequeue, the next time through the loop we
will reset `rwa->err` to zero, allowing us to try to process the
following record (2 after the failed record).  Depending on what types
of records remain, we may incorrectly complete the receive
"successfully", but without actually having processed all the records.

The fix is to only set `rwa->err` if we got a *non-zero* error.

This bug was introduced by #10099 "Improve zfs receive performance by
batching writes".

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Paul Dagnelie <pcd@delphix.com>
Signed-off-by: Matthew Ahrens <mahrens@delphix.com>
Closes #10320
2020-05-14 20:48:29 -07:00
yparitcher
cdcce2f019
Fix VN_OPEN_INVFS typo
The VN_OPEN_INVFS literal is in the wrong field.

Reviewed-by: Matt Macy <mmacy@FreeBSD.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: yparitcher <y@paritcher.com>
Closes #10322
2020-05-14 20:47:14 -07:00
Brian Behlendorf
2ade659eb4
Fix abd_enter/exit_critical wrappers
Commit fc551d7 introduced the wrappers abd_enter_critical() and
abd_exit_critical() to mark critical sections.  On Linux these are
implemented with the local_irq_save() and local_irq_restore() macros
which set the 'flags' argument when saving.  By wrapping them with
a function the local variable is no longer set by the macro and is
no longer properly restored.

Convert abd_enter_critical() and abd_exit_critical() to macros to
resolve this issue and ensure the flags are properly restored.

Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Brian Atkinson <batkinson@lanl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #10332
2020-05-14 20:45:16 -07:00
Jorgen Lundman
eeb8fae9c7
Upstream: add missing thread_exit()
Undo FreeBSD wrapper for thread_create() added to call thread_exit.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Jorgen Lundman <lundman@lundman.net>
Closes #10314
2020-05-14 15:58:09 -07:00
Matthew Ahrens
8b240f14f9
remove unneeded member drc_err of dmu_recv_cookie_t
The member drc_err of dmu_recv_cookie_t is used only locally in
receive_read, so we can replace it with a local variable.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Matthew Ahrens <mahrens@delphix.com>
Closes #10319
2020-05-14 12:10:29 -07:00
Brian Behlendorf
c87f958668
flake8 E741 variable name warning
Update the zts-report.py script to conform to the flake8 E741 rule.

    "Variables named I, O, and l can be very hard to read. This is
    because the letter I and the letter l are easily confused, and
    the letter O and the number 0 can be easily confused."

- https://www.flake8rules.com/rules/E741.html

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #10323
2020-05-14 09:41:29 -07:00
John Wren Kennedy
e1fcd940e7
ZTS: zpool_split_indirect deletes zfstest log file
The cleanup routine for this test attempts to remove some temporary
files with `rm -f $VDEV_*`, but VDEV_ is undefined. As a result, all
files in the current working directory (/var/tmp/test_results/current)
get removed instead. This includes the complete log file of all tests.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: George Amanakis <gamanakis@gmail.com>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: John Kennedy <john.kennedy@delphix.com>
Closes #10324
2020-05-14 09:39:47 -07:00
John Poduska
41035a0496
Resilver restarts unnecessarily when it encounters errors
When a resilver finishes, vdev_dtl_reassess is called to hopefully
excise DTL_MISSING (amongst other things). If there are errors during
the resilver, they are tracked in DTL_SCRUB, as spelled out in the
block comment in vdev.c. DTL_SCRUB is in-core only, so it can only
be used if the pool was online for the whole resilver. This state is
tracked with the spa_scrub_started flag, which only gets set when
the scan is initialized. Unfortunately, this flag gets cleared right
before vdev_dtl_reassess gets called, so if there are any errors
during the scan, DTL_MISSING will never get excised and the resilver
will just continually restart. This fix simply moves clearing that
flag until after the call to vdev_dtl_reasses.

In addition, if a pool is imported and already has scn_errors > 0,
this change will restart the resilver immediately instead of doing
the rest of the scan and then restarting it from the beginning. On
the other hand, if scn_errors == 0 at import, then no errors have
been encountered so far, so the spa_scrub_started flag can be safely
set.

A test has been added to verify that resilver does not restart when
relevant DTL's are available.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Paul Zuchowski <pzuchowski@datto.com>
Signed-off-by: John Poduska <jpoduska@datto.com>
Closes #10291
2020-05-13 10:54:27 -07:00
AJ Jordan
b29e31d80d Fix outdated comment header
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: AJ Jordan <alex@strugee.net>
Closes #10288
2020-05-11 16:23:16 -07:00
AJ Jordan
5a04b17717 Fix up arcstat(1) to match our version
Turns out the illumos manpage, which is what this originates from, was
written for the original Perl version of the utility which is not the
version in the OpenZFS tree. *That* version originates from a Python
rewrite that was done for FreeNAS. So fix up the manpage to match what
we actually ship (and fix a few typos in the process).

Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: AJ Jordan <alex@strugee.net>
Closes #10288
2020-05-11 16:22:48 -07:00
AJ Jordan
ac806a2559 Import the arcstat(1m) manpage from illumos
And move it from section 1m to section 1 for consistency.

Imported from illumos commit f34d737f.

Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: AJ Jordan <alex@strugee.net>
Closes #10288
2020-05-11 16:22:18 -07:00
AJ Jordan
2b21da4f76 Fix inconsistent capitalization in arcstat -v
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: AJ Jordan <alex@strugee.net>
Closes #10288
2020-05-11 16:21:08 -07:00
Richard Laager
7fcf82451c
Change zfsunlock for better busybox compatibility
It turns out that there are two versions of Busybox, at least on Ubuntu
18.04.  If you have the busybox-static package installed, you get a
busybox that supports `ps a` and `head`.  If you only have
busybox-initramfs, you don't.  Either way, you have `awk`.

This change should also make this compatible with GNU ps, if you somehow
end up with that in the initramfs environment.

Reviewed-by: Tom Caputi <tcaputi@datto.com>
Reviewed-by: Andrey Prokopenko <job@terem.fr>
Signed-off-by: Richard Laager <rlaager@wiktel.com>
Closes #10307
2020-05-10 12:26:08 -07:00
Brian Atkinson
fc551d7efb
Combine OS-independent ABD Code into Common Source File
Reorganizing ABD code base so OS-independent ABD code has been placed
into a common abd.c file. OS-dependent ABD code has been left in each
OS's ABD source files, and these source files have been renamed to
abd_os.

The OS-independent ABD code is now under:
module/zfs/abd.c
With the OS-dependent code in:
module/os/linux/zfs/abd_os.c
module/os/freebsd/zfs/abd_os.c

Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Brian Atkinson <batkinson@lanl.gov>
Closes #10293
2020-05-10 12:23:52 -07:00
Petros Koutoupis
bd95f00d4b
Fixed LDADD library links in Makefiles for cross compilation builds
When building on native dev system, there are no issues but when
cross-compiling for target system, some linker errors are observed.
The only way to avoid these errors is by adjusting the Makefile.am
of those various components to add the library dependencies.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Petros Koutoupis <petros@petroskoutoupis.com>
Closes #10304
2020-05-09 10:17:08 -07:00
Brian Behlendorf
d775c86dd4
ZTS: refreserv_005_pos.ksh
When recursively destroying the dataset it's possible for the
dataset volume to be open by an unrelated process, like blkid.
Use the destroy_dataset() which will retry when this occurs.

Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #10305
2020-05-08 13:50:02 -07:00
Andrey Prokopenko
1cc635a2dd Unlock encrypted root partition over SSH
This commit add a new feature for Debian-based distributions to unlock
encrypted root partition over SSH.  This feature is very handy on
headless NAS or VPS cloud servers.  To use this feature, you will need
to install the dropbear-initramfs package.

Reviewed-By: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-By: Tom Caputi <tcaputi@datto.com>
Signed-off-by: Andrey Prokopenko <job@terem.fr>
Signed-off-by: Richard Laager <rlaager@wiktel.com>
Closes #10027
2020-05-07 16:41:16 -07:00
Richard Laager
746d22ee02 Rework README.initramfs.markdown
This file is listed as being in Markdown format, but it didn't really
use much Markdown.  I have added a fair amount of formatting.

I have reordered and reworded things to improve the flow of the text.

Reviewed-By: Andrey Prokopenko <job@terem.fr>
Reviewed-By: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-By: Tom Caputi <tcaputi@datto.com>
Signed-off-by: Richard Laager <rlaager@wiktel.com>
Closes #10027
2020-05-07 16:40:00 -07:00
Richard Laager
4cfd339ce4 Cleanup contrib/initramfs automake
The initramfs hook scripts depend on Makefile.  This way, if the
substitution code is changed, they should update.  This brings it in
line with etc/init.d (which was modified to match the example in the
automake docs).

The initramfs hook script cleaning now matches etc/init.d.

There was a mix of SUBDIRS recursion and custom install rules for files
in subdirectories.  This was duplicated for the "hooks" and "scripts"
subdirectories.  Now everything uses SUBDIRS.

I fixed the substitution of DEFAULT_INITCONF_DIR for hooks/zfs.

Reviewed-By: Andrey Prokopenko <job@terem.fr>
Reviewed-By: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-By: Tom Caputi <tcaputi@datto.com>
Signed-off-by: Richard Laager <rlaager@wiktel.com>
Closes #10027
2020-05-07 16:39:08 -07:00
George Amanakis
657fd33bcf
Improvements on persistent L2ARC
Functional changes:

We implement refcounts of log blocks and their aligned size on the
cache device along with two corresponding arcstats. The refcounts are
reflected in the header of the device and provide valuable information
as to whether log blocks are accounted for correctly. These are
dynamically adjusted as log blocks are committed/evicted. zdb also uses
this information in the device header and compares it to the
corresponding values as reported by dump_l2arc_log_blocks() which
emulates l2arc_rebuild(). If the refcounts saved in the device header
report higher values, zdb exits with an error. For this feature to work
correctly there should be no active writes on the device. This is also
employed in the tests of persistent L2ARC. We extend the structure of
the cache device header by adding the two new variables mirroring the
refcounts after the existing variables to preserve backward
compatibility in terms of persistent L2ARC.

1) a new arcstat "l2_log_blk_asize" and refcount "l2ad_lb_asize" which
   reflect the total aligned size of log blocks on the device. This is
   also reflected in the header of the cache device as "dh_lb_asize".
2) a new arcstat "l2arc_log_blk_count" and refcount "l2ad_lb_count"
   which reflect the total number of L2ARC log blocks present on cache
   devices.  It is also reflected in the header of the cache device as
   "dh_lb_count".

In l2arc_rebuild_vdev() if the amount of committed log entries in a log
block is 0 and the device header is valid we update the device header.
This will facilitate trimming of the whole device in this case when
TRIM for L2ARC is implemented.

Improve loop protection in l2arc_rebuild() by using the starting offset
of the payload of each log block instead of the starting offset of the
log block.

If the zio in l2arc_write_buffers() fails, restore the lbps array in the
header of the device to its previous state in l2arc_write_done().

If l2arc_rebuild() ends the rebuild process without restoring any L2ARC
log blocks in ARC and without any other error, this means that the lbps
array in the header is pointing to non-existent or invalid log blocks.
Reset the device header in this case.

In l2arc_rebuild() change the zfs_dbgmsg messages to
spa_history_log_internal() making them user visible with zpool history
command.

Non-functional changes:

Make the first test in persistent L2ARC use `zdb -lll` to increase
coverage in `zdb.c`.

Rename psize with asize when referring to log blocks, since
L2ARC_SET_PSIZE stores the vdev aligned size for log blocks. Also
rename dh_log_blk_entries to dh_log_entries to make it clear that
it is a mirror of l2ad_log_entries. Added comments for both changes.

Fix inaccurate comments for example in l2arc_log_blk_restore().

Add asserts at the end in l2arc_evict() and l2arc_write_buffers().

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: George Amanakis <gamanakis@gmail.com>
Closes #10228
2020-05-07 16:34:03 -07:00
Paul Dagnelie
108a454a46
Add support for boot environment data to be stored in the label
Modern bootloaders leverage data stored in the root filesystem to 
enable some of their powerful features. GRUB specifically has a grubenv 
file which can store large amounts of configuration data that can be 
read and written at boot time and during normal operation. This allows 
sysadmins to configure useful features like automated failover after 
failed boot attempts. Unfortunately, due to the Copy-on-Write nature 
of ZFS, the standard behavior of these tools cannot handle writing to
ZFS files safely at boot time. We need an alternative way to store 
data that allows the bootloader to make changes to the data.

This work is very similar to work that was done on Illumos to enable 
similar functionality in the FreeBSD bootloader. This patch is different 
in that the data being stored is a raw grubenv file; this file can store 
arbitrary variables and values, and the scripting provided by grub is 
powerful enough that special structures are not required to implement 
advanced behavior.

We repurpose the second padding area in each label to store the grubenv 
file, protected by an embedded checksum. We add two ioctls to get and 
set this data, and libzfs_core and libzfs functions to access them more 
easily. There are no direct command line interfaces to these functions; 
these will be added directly to the bootloader utilities.

Reviewed-by: Pavel Zakharov <pavel.zakharov@delphix.com>
Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Paul Dagnelie <pcd@delphix.com>
Closes #10009
2020-05-07 09:36:33 -07:00
Philip Pokorny
a36bad1759
Fix column width calculation issue with certain terminal widths
If the reported terminal width is 0 or less than 42, the signed variable
width was set to a negative number that was then assigned to the
unsigned column width becoming a huge number.

Add comments and change logic to better explain what's happening.

Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Philip Pokorny <ppokorny@mindspring.com>
Closes #10247
2020-05-06 17:17:38 -07:00
George Amanakis
1b664952ae
Enable splitting mirrors with indirect vdevs
When a top-level vdev is removed from a pool it is converted to an
indirect vdev. Until now splitting such mirrored pools was not possible
with zpool split. This patch enables handling of indirect vdevs and
splitting of those pools with zpool split.

Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: George Amanakis <gamanakis@gmail.com>
Closes #10283
2020-05-06 10:32:28 -07:00
Ryan Moeller
ddc7a2dd3b
taskq: Don't leak system_delay_taskq on FreeBSD
Adds a missing taskq_destroy() call.

Reported by: Jorgen Lundman <lundman@lundman.net>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: Ryan Moeller <ryan@iXsystems.com>
Closes #10292
2020-05-05 09:36:41 -07:00
alaviss
3e5d41d807
config/kernel-inode-times: initialize timespec
Usage of this variable uninitialized triggers -Werror,-Wuninitialized
when compiled under clang for linux kernel 5.6, leading the build system
to believe that the function is not declared.

This commit initializes the variable to suppress the warning and fix the
build for kernel 5.6 with clang.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Hiếu Lê <leorize+oss@disroot.org>
Closes #10279
Closes #10281
2020-05-04 15:25:48 -07:00
Ryan Moeller
6f3e1a4828
Avoid the GEOM topology lock recursion when autoexpanding a pool
The steps to reproduce the problem:

        mdconfig -a -t swap -s 3g -u 0
        gpart create -s GPT md0
        gpart add -t freebsd-zfs -s 1g md0
        zpool create -o autoexpand=on foo md0p1
        gpart resize -i 1 -s 2g md0

Authored by: pjd <pjd@FreeBSD.org>
FreeBSD-commit: freebsd/freebsd@bccd2db598

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Ported-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Ryan Moeller <ryan@iXsystems.com>
Closes #10270
2020-05-04 15:10:41 -07:00
Ryan Moeller
639dfeb831
Update FreeBSD SPL atomics
Sync up with the following changes from FreeBSD:

ZFS: add emulation of atomic_swap_64 and atomic_load_64

Some 32-bit platforms do not provide 64-bit atomic operations that ZFS
requires, either in userland or at all.  We emulate those operations
for those platforms using a mutex.  That is not entirely correct and
it's very efficient.  Besides, the loads are plain loads, so torn
values are possible.

Nevertheless, the emulation seems to work for some definition of work.

This change adds atomic_swap_64, which is already used in ZFS code,
and atomic_load_64 that can be used to prevent torn reads.

Authored by: avg <avg@FreeBSD.org>
FreeBSD-commit: freebsd/freebsd@3458e5d1e6

cleanup of illumos compatibility atomics

atomic_cas_32 is implemented using atomic_fcmpset_32 on all platforms.
Ditto for atomic_cas_64 and atomic_fcmpset_64 on platforms that have
it.  The only exception is sparc64 that provides MD atomic_cas_32 and
atomic_cas_64.
This is slightly inefficient as fcmpset reports whether the operation
updated the target and that information is not needed for cas.
Nevertheless, there is less code to maintain and to add for new
platforms.  Also, the operations are done inline now as opposed to
function calls before.

atomic_add_64_nv is implemented using atomic_fetchadd_64 on platforms
that provide it.

casptr, cas32, atomic_or_8, atomic_or_8_nv are completely removed as
they have no users.

atomic_mtx that is used to emulate 64-bit atomics on platforms that
lack them is defined only on those platforms.

As a result, platform specific opensolaris_atomic.S files have lost
most of their code.  The only exception is i386 where the
compat+contrib code provides 64-bit atomics for userland use.  That
code assumes availability of cmpxchg8b instruction.  FreeBSD does not
have that assumption for i386 userland and does not provide 64-bit
atomics.  Hopefully, this can and will be fixed.

Authored by: avg <avg@FreeBSD.org>
FreeBSD-commit: freebsd/freebsd@e9642c209b

emulate illumos membar_producer with atomic_thread_fence_rel

membar_producer is supposed to be a store-store barrier.
Also, in the code that FreeBSD has ported from illumos membar_producer
is used only with regular stores to regular memory (with respect to
caching).

We do not have an MI primitive for the store-store barrier, so
atomic_thread_fence_rel is the closest we have as it provides
(load | store) -> store barrier.

Previously, membar_producer was an empty function call on all 32-bit
arm-s, 32-bit powerpc, riscv and all mips variants.  I think that it
was inadequate.
On other platforms, such as amd64, arm64, i386, powerpc64, sparc64,
membar_producer was implemented using stronger primitives than required
for a store-store barrier with respect to regular memory access.
For example, it used sfence on amd64 and lock-ed nop in i386 (despite
TSO).
On powerpc64 we now use recommended lwsync instead of eieio.
On sparc64 FreeBSD uses TSO mode.
On arm64/aarch64 we now use dmb sy instead of dmb ish.  Not sure if
this is an improvement, actually.

After this change we can drop opensolaris_atomic.S for aarch64, amd64,
powerpc64 and sparc64 as all required atomic operations have either
direct or light-weight mapping to FreeBSD native atomic operations.

Discussed with: kib
Authored by: avg <avg@FreeBSD.org>
FreeBSD-commit: freebsd/freebsd@50cdda62fc

fix up r353340, don't assume that fcmpset has strong semantics

fcmpset can have two kinds of semantics, weak and strong.
For practical purposes, strong semantics means that if fcmpset fails
then the reported current value is always different from the expected
value.  Weak semantics means that the reported current value may be the
same as the expected value even though fcmpset failed.  That's a so
called "sporadic" failure.

I originally implemented atomic_cas expecting strong semantics, but
many platforms actually have weak one.

Reported by:    pkubaj (not confirmed if same issue)
Discussed with: kib, mjg
Authored by: avg <avg@FreeBSD.org>
FreeBSD-commit: freebsd/freebsd@238787c74e

[PowerPC] [MIPS] Implement 32-bit kernel emulation of atomic64 operations

This is a lock-based emulation of 64-bit atomics for kernel use, split off
from an earlier patch by jhibbits.

This is needed to unblock future improvements that reduce the need for
locking on 64-bit platforms by using atomic updates.

The implementation allows for future integration with userland atomic64,
but as that implies going through sysarch for every use, the current
status quo of userland doing its own locking may be for the best.

Submitted by:   jhibbits (original patch), kevans (mips bits)
Reviewed by:    jhibbits, jeff, kevans
Authored by: bdragon <bdragon@FreeBSD.org>
Differential Revision:  https://reviews.freebsd.org/D22976
FreeBSD-commit: freebsd/freebsd@db39dab3a8

Remove sparc64 kernel support

Remove all sparc64 specific files
Remove all sparc64 ifdefs
Removee indireeect sparc64 ifdefs

Authored by: imp <imp@FreeBSD.org>
FreeBSD-commit: freebsd/freebsd@48b94864c5

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Ported-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Ryan Moeller <ryan@iXsystems.com>
Closes #10250
2020-05-04 15:07:04 -07:00
Ryan Moeller
6ed4391da9
ZTS: Count CKSUM for all vdevs in verify_pool
The verify_pool function should detect checksum errors on any vdev, but
it was only checking at the root of the pool.

Accumulate the errors for all vdevs to obtain the correct count.

Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <ryan@iXsystems.com>
Closes #10271
2020-04-30 17:50:16 -07:00
Ryan Moeller
154e48eac9
zdb: Fix ignored zfs_arc_max tuning
Running zdb -l $disk shows a warning that zfs_arc_max is being ignored.
zdb sets zfs_arc_max below zfs_arc_min, which causes the value to be
ignored by arc_tuning_update().

Set zfs_arc_min to the bare minimum in zdb, which is below zfs_arc_max.

Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Allan Jude <allanjude@freebsd.org>
Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Ryan Moeller <ryan@iXsystems.com>
Closes #10269
2020-04-30 17:48:58 -07:00
Paul B. Henson
0aeb0bed6f OpenZFS 6765 - zfs_zaccess_delete() comments do not accurately
reflect delete permissions for ACLs

Authored by: Kevin Crowe <kevin.crowe@nexenta.com>
Reviewed by: Gordon Ross <gwr@nexenta.com>
Reviewed by: Yuri Pankov <yuri.pankov@nexenta.com>
Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov>
Approved by: Richard Lowe <richlowe@richlowe.net>
Ported-by: Paul B. Henson <henson@acm.org>

Porting Notes:
* Only comments are updated

OpenZFS-issue: https://www.illumos.org/issues/6765
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/da412744bc
Closes #10266
2020-04-30 11:24:55 -07:00
Paul B. Henson
235a856576 OpenZFS 6762 - POSIX write should imply DELETE_CHILD on directories
- and some additional considerations

Authored by: Kevin Crowe <kevin.crowe@nexenta.com>
Reviewed by: Gordon Ross <gwr@nexenta.com>
Reviewed by: Yuri Pankov <yuri.pankov@nexenta.com>
Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov>
Approved by: Richard Lowe <richlowe@richlowe.net>
Ported-by: Paul B. Henson <henson@acm.org>

OpenZFS-issue: https://www.illumos.org/issues/6762
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/1eb4e906ec
Closes #10266
2020-04-30 11:24:38 -07:00
Paul B. Henson
99495ba6ab OpenZFS 8984 - fix for 6764 breaks ACL inheritance
Authored by: Dominik Hassler <hadfl@omniosce.org>
Reviewed by: Sam Zaydel <szaydel@racktopsystems.com>
Reviewed by: Paul B. Henson <henson@acm.org>
Reviewed by: Prakash Surya <prakash.surya@delphix.com>
Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov>
Approved by: Matthew Ahrens <mahrens@delphix.com>
Ported-by: Paul B. Henson <henson@acm.org>

OpenZFS-issue: https://www.illumos.org/issues/8984
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/e9bacc6d1a
Closes #10266
2020-04-30 11:24:27 -07:00
Paul B. Henson
5a2f527d4b OpenZFS 6764 - zfs issues with inheritance flags during chmod(2)
with aclmode=passthrough

Authored by: Albert Lee <trisk@nexenta.com>
Reviewed by: Gordon Ross <gwr@nexenta.com>
Reviewed by: Yuri Pankov <yuri.pankov@nexenta.com>
Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov>
Approved by: Richard Lowe <richlowe@richlowe.net>
Ported-by: Paul B. Henson <henson@acm.org>

OpenZFS-issue: https://www.illumos.org/issues/6764
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/de0f1ddb59
Closes #10266
2020-04-30 11:24:14 -07:00
Paul B. Henson
7bf3e1fa0f OpenZFS 3254 - add support in zfs for aclmode=restricted
Authored-by: Paul B. Henson <henson@acm.org>
Reviewed by: Albert Lee <trisk@nexenta.com>
Reviewed by: Gordon Ross <gwr@nexenta.com>
Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov>
Approved by: Richard Lowe <richlowe@richlowe.net>
Ported-by: Paul B. Henson <henson@acm.org>

OpenZFS-issue: https://www.illumos.org/issues/3254
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/71dbfc287c
Closes #10266
2020-04-30 11:23:59 -07:00
Paul B. Henson
a1af567bb6 OpenZFS 742 - Resurrect the ZFS "aclmode" property OpenZFS 664 - Umask masking "deny" ACL entries OpenZFS 279 - Bug in the new ACL (post-PSARC/2010/029) semantics
Porting notes:
* Updated zfs_acl_chmod to take 'boolean_t isdir' as first parameter
  rather than 'zfsvfs_t *zfsvfs'
* zfs man pages changes mixed between zfs and new zfsprops man pages

Reviewed by: Aram Hvrneanu <aram@nexenta.com>
Reviewed by: Gordon Ross <gwr@nexenta.com>
Reviewed by: Robert Gordon <rbg@openrbg.com>
Reviewed by: Mark.Maybee@oracle.com
Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov>
Approved by: Garrett D'Amore <garrett@nexenta.com>
Ported-by: Paul B. Henson <henson@acm.org>

OpenZFS-issue: https://www.illumos.org/issues/742
OpenZFS-issue: https://www.illumos.org/issues/664
OpenZFS-issue: https://www.illumos.org/issues/279
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/a3c49ce110
Closes #10266
2020-04-30 11:22:45 -07:00
Adam D. Moss
d7d4678fe6
Fix regression caused by c14ca14
The 'zfs load-key' command was broken for 'keyformat=passphrase'.
Use the correct output vars when stdin is an interactive terminal.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: adam moss <c@yotes.com>
Closes #10264 
Closes #10265
2020-04-29 17:33:33 -07:00
Brian Behlendorf
ab16c87e55
Add longjmp support for Thumb-2
When a Thumb-2 kernel is being used, then longjmp must be implemented
using the Thumb-2 instruction set in module/lua/setjmp/setjmp_arm.S.

Original-patch-by: @jsrlabs
Reviewed-by: @awehrfritz
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #7408 
Closes #9957 
Closes #9967
2020-04-29 17:30:13 -07:00
Jason King
c14ca1456e
Support custom URI schemes for the keylocation property
Every platform has their own preferred methods for implementing URI 
schemes beyond the currently supported file scheme (e.g. 'https' on 
FreeBSD would likely use libfetch, while Linux distros and illumos
would probably use libcurl, etc). It would be helpful if libzfs can 
be extended to support additional schemes in a simple manner.

A table of (scheme, handler_function) pairs is added to libzfs_crypto.c, 
and the existing functions in libzfs_crypto.c so that when the key 
format is ZFS_KEYFORMAT_URI, the scheme from the URI string is 
extracted, and a matching handler it located in the aforementioned 
table (returning an error if no matching handler is found). The handler 
function is then invoked to retrieve the key material (in the format 
specified by the keyformat property) and the key is loaded or the 
handler can return an error to abort the key loading process.

Reviewed by: Sean Eric Fagan <sef@ixsystems.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Jason King <jason.king@joyent.com>
Closes #10218
2020-04-28 10:55:18 -07:00
Sara Hartse
89a6610ed0
Add more sanity testing for zdb input args
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Signed-off-by: sara hartse <sara.hartse@delphix.com>
Closes #10243
2020-04-28 09:56:31 -07:00