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* Annontate FreeBSD sysctls with CTLFLAG_MPSAFEMark Johnston2020-09-212-26/+31
| | | | | | | | | | | | | Without this, the sysctl system calls will acquire a global lock before invoking the handler. This is noticeable in some situations when running top(1). The global lock is mostly vestigal but continues to see some use and so contention is still a problem; until the default sense of the MPSAFE flag changes, we have to annotate each and every handler. Reviewed-by: Allan Jude <[email protected]> Reviewed-by: Ryan Moeller <[email protected]> Signed-off-by: Mark Johnston <[email protected]> Closes #10836
* Fix switch statement indentation in the FreeBSD kstat codeMark Johnston2020-09-211-105/+102
| | | | | | | | | This is in preparation for some functional changes. Reviewed-by: Allan Jude <[email protected]> Reviewed-by: Ryan Moeller <[email protected]> Signed-off-by: Mark Johnston <[email protected]> Closes #10950
* vdev_ashift should only be set onceGeorge Wilson2020-09-188-50/+92
| | | | | | | | | | | | | | | | | | | | | | | | | | | == Motivation and Context The new vdev ashift optimization prevents the removal of devices when a zfs configuration is comprised of disks which have different logical and physical block sizes. This is caused because we set 'spa_min_ashift' in vdev_open and then later call 'vdev_ashift_optimize'. This would result in an inconsistency between spa's ashift calculations and that of the top-level vdev. In addition, the optimization logical ignores the overridden ashift value that would be provided by '-o ashift=<val>'. == Description This change reworks the vdev ashift optimization so that it's only set the first time the device is configured. It still allows the physical and logical ahsift values to be set every time the device is opened but those values are only consulted on first open. Reviewed-by: Matthew Ahrens <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Cedric Berger <[email protected]> Signed-off-by: George Wilson <[email protected]> External-Issue: DLPX-71831 Closes #10932
* pool may become suspended during device expansionGeorge Wilson2020-09-171-2/+20
| | | | | | | | | | | | | | | | | | | | When expanding a device zfs needs to rescan the partition table to get the correct size. This can only happen when we're in the kernel and requires the device to be closed. As part of the rescan, udev is notified and the device links are removed and recreated. This leave a window where the vdev code may try to reopen the device before udev has recreated the link. If that happens, then the pool may end up in a suspended state. To correct this, we leverage the BLKPG_RESIZE_PARTITION ioctl which allows the partition information to be modified even while it's in use. This ioctl also does not remove the device link associated with the zfs data partition so it eliminates the race condition that can occur in the kernel. Reviewed-by: Pavel Zakharov <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: George Wilson <[email protected]> Closes #10897
* FreeBSD: Do not copy vp into f_data for DTYPE_VNODE filesRyan Moeller2020-09-171-4/+1
| | | | | | | | | | https://reviews.freebsd.org/D26346 Do not copy vp into f_data for DTYPE_VNODE files. The vnode pointer is already stored in f_vnode. Use that so f_data can be reused. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Ryan Moeller <[email protected]> Closes #10929
* Need a long hold in zpl_mount_implJohn Poduska2020-09-171-0/+4
| | | | | | | | | | | | | | | | | | In zpl_mount_impl, there is: dmu_objset_hold ; returns with pool & ds held dsl_pool_rele sget dsl_dataset_rele As spelled out in the "DSL Pool Configuration Lock" in dsl_pool.c, this requires a long hold. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Paul Zuchowski <[email protected]> Signed-off-by: John Poduska <[email protected]> Closes #10936
* Rename acltype=posixacl to acltype=posixRyan Moeller2020-09-165-17/+18
| | | | | | | Prefer acltype=off|posix, retaining the old names as aliases. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Ryan Moeller <[email protected]> Closes #10918
* Fix stack frame size: dnode_dirty_l1range()Pavel Snajdr2020-09-151-10/+13
| | | | | | | Reviewed-by: Ryan Moeller <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Pavel Snajdr <[email protected]> Closes #10879
* dmu_redact_snap: fix possible memleakPavel Snajdr2020-09-151-0/+2
| | | | | | | Reviewed-by: Ryan Moeller <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Pavel Snajdr <[email protected]> Closes #10879
* Fix stack frame size: dmu_redact_snap()Pavel Snajdr2020-09-151-8/+20
| | | | | | | Reviewed-by: Ryan Moeller <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Pavel Snajdr <[email protected]> Closes #10879
* Fix stack frame size: spa_livelist_delete_cb()Pavel Snajdr2020-09-151-5/+7
| | | | | | | Reviewed-by: Ryan Moeller <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Pavel Snajdr <[email protected]> Closes #10879
* zfs label bootenv should store data as nvlistToomas Soome2020-09-152-36/+100
| | | | | | | | | | | | | nvlist does allow us to support different data types and systems. To encapsulate user data to/from nvlist, the libzfsbootenv library is provided. Reviewed-by: Arvind Sankar <[email protected]> Reviewed-by: Allan Jude <[email protected]> Reviewed-by: Paul Dagnelie <[email protected]> Reviewed-by: Igor Kozhukhov <[email protected]> Signed-off-by: Toomas Soome <[email protected]> Closes #10774
* Linux: Prevent destruction while showing mount devnameRyan Moeller2020-09-151-0/+2
| | | | | | | | | Use ZFS_ENTER and ZFS_EXIT to protect datasets while their mount devname is being retrieved. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Ryan Moeller <[email protected]> Closes #10892 Closes #10927
* Add L2ARC arcstats for MFU/MRU buffers and buffer content typeGeorge Amanakis2020-09-141-26/+155
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently the ARC state (MFU/MRU) of cached L2ARC buffer and their content type is unknown. Knowing this information may prove beneficial in adjusting the L2ARC caching policy. This commit adds L2ARC arcstats that display the aligned size (in bytes) of L2ARC buffers according to their content type (data/metadata) and according to their ARC state (MRU/MFU or prefetch). It also expands the existing evict_l2_eligible arcstat to differentiate between MFU and MRU buffers. L2ARC caches buffers from the MRU and MFU lists of ARC. Upon caching a buffer, its ARC state (MRU/MFU) is stored in the L2 header (b_arcs_state). The l2_m{f,r}u_asize arcstats reflect the aligned size (in bytes) of L2ARC buffers according to their ARC state (based on b_arcs_state). We also account for the case where an L2ARC and ARC cached MRU or MRU_ghost buffer transitions to MFU. The l2_prefetch_asize reflects the alinged size (in bytes) of L2ARC buffers that were cached while they had the prefetch flag set in ARC. This is dynamically updated as the prefetch flag of L2ARC buffers changes. When buffers are evicted from ARC, if they are determined to be L2ARC eligible then their logical size is recorded in evict_l2_eligible_m{r,f}u arcstats according to their ARC state upon eviction. Persistent L2ARC: When committing an L2ARC buffer to a log block (L2ARC metadata) its b_arcs_state and prefetch flag is also stored. If the buffer changes its arcstate or prefetch flag this is reflected in the above arcstats. However, the L2ARC metadata cannot currently be updated to reflect this change. Example: L2ARC caches an MRU buffer. L2ARC metadata and arcstats count this as an MRU buffer. The buffer transitions to MFU. The arcstats are updated to reflect this. Upon pool re-import or on/offlining the L2ARC device the arcstats are cleared and the buffer will now be counted as an MRU buffer, as the L2ARC metadata were not updated. Bug fix: - If l2arc_noprefetch is set, arc_read_done clears the L2CACHE flag of an ARC buffer. However, prefetches may be issued in a way that arc_read_done() is bypassed. Instead, move the related code in l2arc_write_eligible() to account for those cases too. Also add a test and update manpages for l2arc_mfuonly module parameter, and update the manpages and code comments for l2arc_noprefetch. Move persist_l2arc tests to l2arc. Reviewed-by: Ryan Moeller <[email protected]> Reviewed-by: Richard Elling <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: George Amanakis <[email protected]> Closes #10743
* FreeBSD: convert teardown inactive lock to a read-mostly sleepable lockMateusz Guzik2020-09-093-18/+18
| | | | | | | | | | | | | | | | | The lock is taken all the time and as a regular read-write lock avoidably serves as a mount point-wide contention point. This forward ports FreeBSD revision r357322. To quote aforementioned commit: Sample result doing an incremental -j 40 build: before: 173.30s user 458.97s system 2595% cpu 24.358 total after: 168.58s user 254.92s system 2211% cpu 19.147 total Reviewed-by: Alexander Motin <[email protected]> Reviewed-by: Ryan Moeller <[email protected]> Signed-off-by: Mateusz Guzik <[email protected]> Closes #10896
* Initialize mmp_last_write when the mmp thread startsOlaf Faaland2020-09-091-8/+12
| | | | | | | | | | | | | | | | | | | | | A great deal of time may go by between when mmp_init() is called and the MMP thread starts, particularly if there are bad devices, because there is I/O checking configs etc. If this time is too long, (gethrtime() - mmp_last_write) > mmp_fail_ns at the time the MMP thread starts. If MMP is configured to suspend the pool, the pool will be suspended immediately. This can be seen in issue #10838 The value of mmp_last_write doesn't matter before the mmp thread starts. To give the MMP thread time to issue and land MMP writes, initialize mmp_last_write when the MMP thread starts. Reviewed-by: Giuseppe Di Natale <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Olaf Faaland <[email protected]> Closes #10873
* FreeBSD: drop dependency on cryptodev moduleRyan Moeller2020-09-091-1/+0
| | | | | | | | | We only need the kernel interfaces in crypto, not the device node in cryptodev. Reviewed-by: Alexander Motin <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Ryan Moeller <[email protected]> Closes #10901
* Introduce ZFS module parameter l2arc_mfuonlyGeorge Amanakis2020-09-081-0/+18
| | | | | | | | | | | In certain workloads it may be beneficial to reduce wear of L2ARC devices by not caching MRU metadata and data into L2ARC. This commit introduces a new tunable l2arc_mfuonly for this purpose. Reviewed-by: Matthew Ahrens <[email protected]> Reviewed-by: Richard Elling <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: George Amanakis <[email protected]> Closes #10710
* dnode_special_open() error: unchecked function return 'zrl_tryenter'Toomas Soome2020-09-081-1/+1
| | | | | Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Toomas Soome <[email protected]> Closes #10876
* FreeBSD: reduce priority of ZIO_TASKQ_ISSUE writes by a larger valueMatthew Macy2020-09-041-5/+17
| | | | | | | | | | On FreeBSD, if priorities divided by four (RQ_PPQ) are equal then a difference between them is insignificant. In other words, incrementing pri by only one as on Linux is insufficient. Reviewed-by: Alexander Motin <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Matt Macy <[email protected]> Closes #10872
* Sequential scrub and resilver updated commentsBrian Behlendorf2020-09-043-0/+3
| | | | | | | | Commit d4a72f2 which introduced multi-phase scrubs and resilvers continued the work presented by Nexenta at the 2016 ZFS developer summit. Update the source to reflect their contribution. Signed-off-by: Brian Behlendorf <[email protected]>
* Avoid posting duplicate zpool eventsDon Brady2020-09-0410-71/+418
| | | | | | | | | | | | | | | | | | | Duplicate io and checksum ereport events can misrepresent that things are worse than they seem. Ideally the zpool events and the corresponding vdev stat error counts in a zpool status should be for unique errors -- not the same error being counted over and over. This can be demonstrated in a simple example. With a single bad block in a datafile and just 5 reads of the file we end up with a degraded vdev, even though there is only one unique error in the pool. The proposed solution to the above issue, is to eliminate duplicates when posting events and when updating vdev error stats. We now save recent error events of interest when posting events so that we can easily check for duplicates when posting an error. Reviewed by: Brad Lewis <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Don Brady <[email protected]> Closes #10861
* nowait synctask must succeedMatthew Ahrens2020-09-049-39/+24
| | | | | | | | | | | | | | If a `zfs_space_check_t` other than `ZFS_SPACE_CHECK_NONE` is used with `dsl_sync_task_nowait()`, the sync task may fail due to ENOSPC. However, there is no way to notice or communicate this failure, so it's extremely difficult to use this functionality correctly, and in fact almost all callers use `ZFS_SPACE_CHECK_NONE`. This commit removes the `zfs_space_check_t` argument from `dsl_sync_task_nowait()`, and always uses `ZFS_SPACE_CHECK_NONE`. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Matthew Ahrens <[email protected]> Closes #10855
* Retain thread name when resuming a zthrRyan Moeller2020-09-031-3/+8
| | | | | | | | | | | | When created, a zthr is given a name to identify it by. This name is lost when a cancelled zthr is resumed. Retain the name of a zthr so it can be used when resuming. Reviewed-by: Serapheim Dimitropoulos <[email protected]> Reviewed-by: Alexander Motin <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Ryan Moeller <[email protected]> Closes #10881
* Replace cv_{timed}wait_sig with cv_{timed}wait_idle where appropriateMatthew Macy2020-09-037-19/+54
| | | | | | | | | | | | | | | | There are a number of places where cv_?_sig is used simply for accounting purposes but the surrounding code has no ability to cope with actually receiving a signal. On FreeBSD it is possible to send signals to individual kernel threads so this could enable undesirable behavior. This patch adds routines on Linux that will do the same idle accounting as _sig without making the task interruptible. On FreeBSD cv_*_idle are all aliases for cv_* Reviewed-by: Alexander Motin <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Matt Macy <[email protected]> Closes #10843
* Links in Source FilesSpencer Kinny2020-09-024-0/+20
| | | | | | | | | | | | | | | Added comments in following files with links to Illumos manual pages: ./module/avl/avl.c ./module/nvpair/nvpair.c ./module/os/linux/spl/spl-kstat.c ./module/os/freebsd/spl/spl_kstat.c Reviewed-by: Ryan Moeller <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Spencer Kinny <[email protected]> Closes #5113 Closes #10859
* zvol: unsigned off can not be less than zeroToomas Soome2020-09-021-1/+1
| | | | | | | Reviewed-by: Richard Elling <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Ryan Moeller <[email protected]> Signed-off-by: Toomas Soome <[email protected]> Closes #10867
* Make spa_stats.c tunables visible on FreeBSDRyan Moeller2020-09-011-18/+12
| | | | | | | | Use ZFS_MODULE_PARAM for cross-platform tunables in spa_stats.c, and add update tunables.cfg in tests for the newly supported ones. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Ryan Moeller <[email protected]> Closes #10858
* FreeBSD: Fix up after spa_stats.c moveMatthew Macy2020-09-012-61/+116
| | | | | | | | | | | | | | Moving spa_stats added the additional burden of supporting KSTAT_TYPE_IO. spa_state_addr will always return a valid value regardless of the value of 'n'. On FreeBSD this will cause an infinite loop as it relies on the raw ops addr routine to indicate that there is no more data. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Ryan Moeller <[email protected]> Signed-off-by: Matt Macy <[email protected]> Closes #10860
* Add 'zfs rename -u' to rename without remountingRyan Moeller2020-09-014-4/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | | Allow to rename file systems without remounting if it is possible. It is possible for file systems with 'mountpoint' property set to 'legacy' or 'none' - we don't have to change mount directory for them. Currently such file systems are unmounted on rename and not even mounted back. This introduces layering violation, as we need to update 'f_mntfromname' field in statfs structure related to mountpoint (for the dataset we are renaming and all its children). In my opinion it is worth it, as it allow to update FreeBSD in even cleaner way - in ZFS-only configuration root file system is ZFS file system with 'mountpoint' property set to 'legacy'. If root dataset is named system/rootfs, we can snapshot it (system/rootfs@upgrade), clone it (system/oldrootfs), update FreeBSD and if it doesn't boot we can boot back from system/oldrootfs and rename it back to system/rootfs while it is mounted as /. Before it was not possible, because unmounting / was not possible. Authored by: Pawel Jakub Dawidek <[email protected]> Reviewed-by: Allan Jude <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Ported by: Matt Macy <[email protected]> Signed-off-by: Ryan Moeller <[email protected]> Closes #10839
* FreeBSD: Remove unused SECLABEL codeRyan Moeller2020-08-311-193/+0
| | | | | | | SECLABEL is undefined on FreeBSD and should be pruned. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Ryan Moeller <[email protected]> Closes #10847
* FreeBSD: Simplify INGLOBALZONERyan Moeller2020-08-311-6/+0
| | | | | | | | | | | | | | | | | FreeBSD's previous ZFS implemented INGLOBALZONE(thread) as (!jailed((thread)->td_ucred)) and passed curthread to INGLOBALZONE. We pass curproc instead of curthread, so we can achieve the same effect with (!jailed((proc)->p_ucred)). The implementation is trivial enough to fit on a single line in a define. We don't really need a whole separate function for something that's already macros all the way down. Eliminate in_globalzone. Reviewed-by: Alexander Motin <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Ryan Moeller <[email protected]> Closes #10851
* zio_ereport_post() and zio_ereport_start() return values are ignoredToomas Soome2020-08-318-20/+24
| | | | | | | | use (void) to silence analyzers. Reviewed-by: Ryan Moeller <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Toomas Soome <[email protected]> Closes #10857
* Move spa_stats.c to common codeMatthew Macy2020-08-304-115/+1
| | | | | | | | | | | Initially it was considered simplest to stub out all of the functions on FreeBSD. Now that FreeBSD supports KSTAT_TYPE_RAW at least some of the functionality should be made available. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Richard Elling <[email protected]> Signed-off-by: Matt Macy <[email protected]> Closes #10842
* FreeBSD: Fix spurious failure in zvol_geom_openMatthew Macy2020-08-301-0/+20
| | | | | | | | | | In zvol_geom_open on first open we need to guarantee that the namespace lock is held to avoid spurious failures in zvol_first_open. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Ryan Moeller <[email protected]> Signed-off-by: Matt Macy <[email protected]> Closes #10841
* FreeBSD: add support for KSTAT_TYPE_RAWMatthew Macy2020-08-291-17/+128
| | | | | | | | | | | A few kstats use KSTAT_TYPE_RAW to provide a string generated on demand. Implementing these as sysctls was punted until now. Reviewed by: Toomas Soome <[email protected]> Reviewed-by: Allan Jude <[email protected]> Reviewed-by: Ryan Moeller <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Matt Macy <[email protected]> Closes #10836
* Linux 5.9 compat: NR_SLAB_RECLAIMABLEBrian Behlendorf2020-08-291-2/+1
| | | | | | | | | | | | | | | | | | | Commit dcdc12e added compatibility code to treat NR_SLAB_RECLAIMABLE_B as if it were the same as NR_SLAB_RECLAIMABLE. However, the new value is in bytes while the old value was in pages which means they are not interchangeable. The only place the reclaimable slab size is used is as a component of the calculation done by arc_free_memory(). This function returns the amount of memory the ARC considers to be free or reclaimable at little cost. Rather than switch to a new interface to get this value it has been removed it from the calculation. It is normally a minor component compared to the number of inactive or free pages, and removing it aligns the behavior with the FreeBSD version of arc_free_memory(). Reviewed-by: Matthew Ahrens <[email protected]> Reviewed-by: Coleman Kane <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #10834
* module/zstd: pass -U__BMI__Georgy Yakovlev2020-08-272-1/+4
| | | | | | | | | | | | | | If kernel is compiled with -march=znver1 or -march=znver2 zstd module compilation will fail due to SSE register return with SSE disabled. What's interesting, is that -march=skylake also implies -mbmi which defines __BMI__ but compilation succeeds. It is probably due to different BMI implementations on AMD and INTEL processors and the way compiler uses instructions. Reviewed-by: Ryan Moeller <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Georgy Yakovlev <[email protected]> Closes #10758 Closes #10829
* dnode_sync is careless with range treePatrick Mooney2020-08-261-2/+12
| | | | | | | | | | | | | | Because dnode_sync_free_range() must drop dn_mtx during its processing, using it as a callback to range_tree_vacate() is not safe. No other operations (besides destroy) are allowed once range_tree_vacate() has begun, and dropping dn_mtx would leave a window open for another thread to observe that invalid (and unsafe) state via dnode_block_freed(). Reviewed-by: Matthew Ahrens <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Igor Kozhukhov <[email protected]> Signed-off-by: Patrick Mooney <[email protected]> Closes #10708 Closes #10823
* zpool: Change base URL for ZFS messages to openzfs-docsRyan Moeller2020-08-261-1/+2
| | | | | | | Reviewed-by: George Melikov <[email protected]> Reviewed-by: Kjeld Schouten <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Ryan Moeller <[email protected]> Closes #10820
* Remove duplicate dnode.h includeBrian Behlendorf2020-08-261-1/+0
| | | | | | | | | The zfs/sa.c source file accidentally includes sys/dnode.h twice. Remove the second occurrence. Reviewed-by: Matthew Ahrens <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #10816 Closes #10819
* Always track temporary fses and snapshots for accountingPaul Dagnelie2020-08-261-17/+6
| | | | | | | | | | | | | | | | The root cause of the issue is that we only occasionally do as the comments in the code suggest and actually ignore the %recv dataset when it comes to filesystem limit tracking. Specifically, the only time we ignore it is when initializing the filesystem and snapshot limit values; when creating a new %recv dataset or deleting one, we always update the bookkeeping. This causes a problem if you init the fs count on a filesystem that already has a %recv dataset, since the bookmarking will be decremented but not incremented. This is resolved in this patch by simply always tracking the %recv dataset as a child. Reviewed-by: Matt Ahrens <[email protected]> Reviewed by: Jerry Jelinek <[email protected]> Signed-off-by: Paul Dagnelie <[email protected]> Closes #10791
* Remove pragma ident linesToomas Soome2020-08-261-2/+0
| | | | | | | | | | The #pragma ident is a historical relic and not needed any more, this pragma is actually unknown for common compilers and is only causing trouble. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Matt Macy <[email protected]> Signed-off-by: Toomas Soome <[email protected]> Closes #10810
* FreeBSD: disable neon usageMatthew Macy2020-08-262-2/+2
| | | | | | | | | | The neon support code does not build on FreeBSD, ifdef out references to fix linker issues on arm64. Reviewed-by: George Melikov <[email protected]> Reviewed-by: Ryan Moeller <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Matt Macy <[email protected]> Closes #10809
* Introduce limit on size of L2ARC headersAlexander Motin2020-08-251-5/+22
| | | | | | | | | | | | | | | | | Since L2ARC buffers are not evicted on memory pressure, too large amount of headers on system with irrationally large L2ARC can render it slow or even unusable. This change limits L2ARC writes and rebuild if unevictable L2ARC-only headers reach dangerous level. While there, call arc_adapt() on L2ARC rebuild, so that it could properly grow arc_c, reflecting potentially significant ARC size increase and avoiding slow growth with hopeless eviction attempts later when "overflow" is detected. Reviewed-by: Ryan Moeller <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reported-by: Richard Elling <[email protected]> Signed-off-by: Alexander Motin <[email protected]> Closes #10765
* Mark lua setjmp/longjmp for powerpc weaksterlingjensen2020-08-251-5/+5
| | | | | | | | Linux already defines setjmp/longjmp for powerpc, which leads to duplicate symbols in a statically linked build. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Sterlng Jensen <[email protected]> Closes #10795
* Export dmu_offset_next() symbolBrian Behlendorf2020-08-251-0/+1
| | | | | | | | Export the dmu_offset_next() symbol for use by Lustre. Reviewed-by: George Melikov <[email protected]> Reviewed-by: Ryan Moeller <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #10796
* Fix inability to destroy snapshot used over NFSyouzhongyang2020-08-241-0/+19
| | | | | | | | | | | | The cache of struct svc_export and struct svc_expkey by nfsd and rpc.mountd for the snapshot holds references to the mount point. We need to flush them out before unmounting, otherwise umount would fail with EBUSY. Reviewed-by: Don Brady <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Youzhong Yang <[email protected]> Closes #6000 Closes #10783
* Avoid symbol collision with in-kernel zstdlibSebastian Gottschall2020-08-245-11/+479
| | | | | | | | | | | For Linux, when zfs is compiled as an in kernel static variant and the in kernel zstd library is compiled statically into the kernel a symbol collision will occur. This wrapper header renames all of the relevant zstd functions to avoid this problem. Reviewed-by: Kjeld Schouten <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Sebastian Gottschall <[email protected]> Closes #10775
* Prevent zfs_acl_chmod() if aclmode restricted and ACL inheritedAndrew2020-08-222-0/+8
| | | | | | | | | | | | | | | | In absence of inheriting entry for owner@, group@, or everyone@, zfs_acl_chmod() is called to set these. This can cause confusion for Samba admins who do not expect these entries to appear on newly created files and directories once they have been stripped from from the parent directory. When aclmode is set to "restricted", chmod is prevented on non-trivial ACLs. It is not a stretch to assume that in this case the administrator does not want ZFS to add the missing special entries. Add check for this aclmode, and if an inherited entry is present skip zfs_acl_chmod(). Reviewed-by: Ryan Moeller <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Andrew Walker <[email protected]> Closes #10748
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