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* Force fault a vdev with 'zpool offline -f'Tony Hutter2017-05-1913-29/+266
| | | | | | | | | | | | | This patch adds a '-f' option to 'zpool offline' to fault a vdev instead of bringing it offline. Unlike the OFFLINE state, the FAULTED state will trigger the FMA code, allowing for things like autoreplace and triggering the slot fault LED. The -f faults persist across imports, unless they were set with the temporary (-t) flag. Both persistent and temporary faults can be cleared with zpool clear. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Tony Hutter <[email protected]> Closes #6094
* Fixed small memory leak in ereport handlingTom Caputi2017-05-181-6/+6
| | | | | | | | | | | One pre-check in zfs_ereport_start() was being called after the nvlists were being allocated. This simply corrects that issue. Reviewed-by: Tony Hutter <[email protected]> Reviewed-by: Giuseppe Di Natale <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Tom Caputi <[email protected]> Closes #6140
* Fix large dnode send stream flag conflictBrian Behlendorf2017-05-181-1/+2
| | | | | | | | | | | | | | | | | | Bit 21 of the send stream flags was inadvertently used for two different features under concurrent development. To avoid any future compatibility problems the large dnode flag is being switched to bit 23 which is unused. The large dnode feature has only been present in pre-releases of ZoL and dnodesize defaults to legacy which is compatible with existing OpenZFS implementations. Users with dnodesize=auto needing to use zfs send/recv must update ZoL on both the source and destination systems. Reviewed by: Matthew Ahrens <[email protected]> Reviewed-by: Ned Bass <[email protected]> Reviewed-by: George Melikov <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #6139
* Compatibilty with glibc-2.23Justin Lecher2017-05-161-0/+1
| | | | | | | | | | In glibc-2.23 <sys/sysmacros.h> isn't automatically included in <sys/types.h> [1], so we need ot explicitely include it. https://sourceware.org/ml/libc-alpha/2015-11/msg00253.html Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Justin Lecher <[email protected]> Closes #6132
* Introduce zv_state_lockBoris Protopopov2017-05-161-71/+124
| | | | | | | | | | | | The lock is designed to protect internal state of zvol_state_t and to avoid taking spa_namespace_lock (e.g. in dmu_objset_own() code path) while holding zvol_stat_lock. Refactor the code accordingly. Signed-off-by: Boris Protopopov <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #3484 Closes #6065 Closes #6134
* Revert commit 1ee159f4Boris Protopopov2017-05-161-2/+29
| | | | | | | | | | | | Fix lock order inversion with zvol_open() as it did not account for use of zvols as vdevs. The latter use cases resulted in the lock order inversion deadlocks that involved spa_namespace_lock and bdev->bd_mutex. Signed-off-by: Boris Protopopov <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #6065 Issue #6134
* Skip spurious resilver IO on raidz vdevIsaac Huang2017-05-1210-33/+125
| | | | | | | | | | | | | | | | On a raidz vdev, a block that does not span all child vdevs, excluding its skip sectors if any, may not be affected by a child vdev outage or failure. In such cases, the block does not need to be resilvered. However, current resilver algorithm simply resilvers all blocks on a degraded raidz vdev. Such spurious IO is not only wasteful, but also adds the risk of overwriting good data. This patch eliminates such spurious IOs. Reviewed-by: Gvozden Neskovic <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed by: Matthew Ahrens <[email protected]> Signed-off-by: Isaac Huang <[email protected]> Closes #5316
* Enable additional test casesBrian Behlendorf2017-05-1153-252/+416
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Enable additional test cases, in most cases this required a few minor modifications to the test scripts. In a few cases a real bug was uncovered and fixed. And in a handful of cases where pools are layered on pools the test case will be skipped until this is supported. Details below for each test case. * zpool_add_004_pos - Skip test on Linux until adding zvols to pools is fully supported and deadlock free. * zpool_add_005_pos.ksh - Skip dumpadm portion of the test which isn't relevant for Linux. The find_vfstab_dev, find_mnttab_dev, and save_dump_dev functions were updated accordingly for Linux. Add O_EXCL to the in-use check to prevent the -f (force) option from working for mounted filesystems and improve the resulting error. * zpool_add_006_pos - Update test case such that it doesn't depend on nested pools. Switch to truncate from mkfile to reduce space requirements and speed up the test case. * zpool_clear_001_pos - Speed up test case by filling filesystem to 25% capacity. * zpool_create_002_pos, zpool_create_004_pos - Use sparse files for file vdevs in order to avoid increasing the partition size. * zpool_create_006_pos - 6ba1ce9 allows raidz+mirror configs with similar redundancy. Updating the valid_args and forced_args cases. * zpool_create_008_pos - Disable overlapping partition portion. * zpool_create_011_neg - Fix to correctly create the extra partition. Modified zpool_vdev.c to use fstat64_blk() wrapper which includes the st_size even for block devices. * zpool_create_012_neg - Updated to properly find swap devices. * zpool_create_014_neg, zpool_create_015_neg - Updated to use swap_setup() and swap_cleanup() wrappers which do the right thing on Linux and Illumos. Removed '-n' option which succeeds under Linux due to differences in the in-use checks. * zpool_create_016_pos.ksh - Skipped test case isn't useful. * zpool_create_020_pos - Added missing / to cleanup() function. Remove cache file prior to test to ensure a clean environment and avoid false positives. * zpool_destroy_001_pos - Removed test case which creates a pool on a zvol. This is more likely to deadlock under Linux and has never been completely supported on any platform. * zpool_destroy_002_pos - 'zpool destroy -f' is unsupported on Linux. Mount point must not be busy in order to unmount them. * zfs_destroy_001_pos - Handle EBUSY error which can occur with volumes when racing with udev. * zpool_expand_001_pos, zpool_expand_003_neg - Skip test on Linux until adding zvols to pools is fully supported and deadlock free. The test could be modified to use loop-back devices but it would be preferable to use the test case as is for improved coverage. * zpool_export_004_pos - Updated test case to such that it doesn't depend on nested pools. Normal file vdev under /var/tmp are fine. * zpool_import_all_001_pos - Updated to skip partition 1, which is known as slice 2, on Illumos. This prevents overwriting the default TESTPOOL which was causing the failure. * zpool_import_002_pos, zpool_import_012_pos - No changes needed. * zpool_remove_003_pos - No changes needed * zpool_upgrade_002_pos, zpool_upgrade_004_pos - Root cause addressed by upstream OpenZFS commit 3b7f360. * zpool_upgrade_007_pos - Disabled in test case due to known failure. Opened issue https://github.com/zfsonlinux/zfs/issues/6112 * zvol_misc_002_pos - Updated to to use ext2. * zvol_misc_001_neg, zvol_misc_003_neg, zvol_misc_004_pos, zvol_misc_005_neg, zvol_misc_006_pos - Moved to skip list, these test case could be updated to use Linux's crash dump facility. * zvol_swap_* - Updated to use swap_setup/swap_cleanup helpers. File creation switched from /tmp to /var/tmp. Enabled minimal useful tests for Linux, skip test cases which aren't applicable. Reviewed-by: Giuseppe Di Natale <[email protected]> Reviewed-by: loli10K <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #3484 Issue #5634 Issue #2437 Issue #5202 Issue #4034 Closes #6095
* OpenZFS 8063 - verify that we do not attempt to access inactive txgMatthew Ahrens2017-05-108-26/+53
| | | | | | | | | | | | | | | | | | | | | Authored by: Matthew Ahrens <[email protected]> Reviewed by: Serapheim Dimitropoulos <[email protected]> Reviewed by: Pavel Zakharov <[email protected]> Approved by: Robert Mustacchi <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Ported-by: George Melikov <[email protected]> A standard practice in ZFS is to keep track of "per-txg" state. Any of the 3 active TXG's (open, quiescing, syncing) can have different values for this state. We should assert that we do not attempt to modify other (inactive) TXG's. Porting Notes: - ASSERTV added to txg_sync_waiting() for unused variable. OpenZFS-issue: https://www.illumos.org/issues/8063 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/01acb46 Closes #6109
* OpenZFS 8166 - zpool scrub thinks it repaired offline deviceMatthew Ahrens2017-05-101-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | Authored by: Matthew Ahrens <[email protected]> Reviewed by: George Wilson <[email protected]> Reviewed-by: loli10K <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Ported-by: Matthew Ahrens <[email protected]> If we do a scrub while a leaf device is offline (via "zpool offline"), we will inadvertently clear the DTL (dirty time log) of the offline device, even though it is still damaged. When the device comes back online, we will incompletely resilver it, thinking that the scrub repaired blocks written before the scrub was started. The incomplete resilver can lead to data loss if there is a subsequent failure of a different leaf device. The fix is to never clear the DTL of offline devices. Note that if a device is onlined while a scrub is in progress, the scrub will be restarted. The problem can be worked around by running "zpool scrub" after "zpool online". OpenZFS-issue: https://www.illumos.org/issues/8166 OpenZFS-commit: https://github.com/openzfs/openzfs/pull/372 Closes #5806 Closes #6103
* Add missing arc_free_cksum() to arc_release()Tom Caputi2017-05-101-0/+4
| | | | | | | | | | | | | | | | | | The arc layer tracks checksums of its data in the arc header so that it can ensure that buffers haven't changed when they're not supposed to. This checksum is only maintained while there is an uncompressed buffer still attached to the header. Unfortunately there is a missing call to arc_free_cksum() in arc_release() that can trigger ASSERTs. This has not been a common issue because the checksums are only maintained for debug builds and triggering the bug requires writing a block (and therefore calling arc_release()) while a compressed buffer is still being used on a debug build. This simply corrects the issue. Reviewed-by: George Melikov <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Tom Caputi <[email protected]> Closes #6105
* Linux 4.12 compat: CURRENT_TIME removedBrian Behlendorf2017-05-107-11/+45
| | | | | | | | Linux 4.9 added current_time() as the preferred interface to get the filesystem time. CURRENT_TIME was retired in Linux 4.12. Reviewed-by: Chunwei Chen <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #6114
* Add property overriding (-o|-x) to 'zfs receive'LOLi2017-05-099-89/+901
| | | | | | | | | | | | | | | | | | | | This allows users to specify "-o property=value" to override and "-x property" to exclude properties when receiving a zfs send stream. Both native and user properties can be specified. This is useful when using zfs send/receive for periodic backup/replication because it lets users change properties such as canmount, mountpoint, or compression without modifying the source. References: https://www.illumos.org/issues/2745 https://www.illumos.org/issues/3753 Reviewed by: Matthew Ahrens <[email protected]> Reviewed-by: Alek Pinchuk <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: loli10K <[email protected]> Closes #1350 Closes #5349
* Make createtxg and guid properties publicChristian Schwarz2017-05-094-5/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Document the existence of `createtxg` and `guid` native properties in man pages and zfs command output. One of the great features of ZFS is incremental replication of snapshots, possibly between pools on different machines. Shell scripts are commonly used to auomate this procedure. They have to find the most recent common snapshot between both sides and then perform incremental send & recv. Currently, scripts rely on the sorting order of `zfs list`, which defaults to `createtxg`, and the assumption that snapshot names on either side do not change. By making `createtxg` and `guid` part of the public ZFS interface, scripts are enabled to use a) `createtxg` to determine the logical & temporal order of snapshots (the creation property is not an equivalent substitute since multiple snapshots may be created within one second) b) `guid` to uniquely identify a snapshot, independent of its current display name This has the potential of making scripts safer and correct. Reviewed-by: George Melikov <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: DHE <[email protected]> Reviewed-by: Richard Laager <[email protected]> Signed-off-by: Christian Schwarz <[email protected]> Closes #6102
* Fix NULL pointer dereference in 'zfs create'LOLi2017-05-091-1/+3
| | | | | | | | | | | A race condition between 'zpool export' and 'zfs create' can crash the latter: this is because we never check libzfs`zpool_open() return value in libzfs`zfs_create(). Reviewed-by: George Melikov <[email protected]> Reviewed-by: Giuseppe Di Natale <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: loli10K <[email protected]> Closes #6096
* Fix zfs .deb package warning in prerm scriptLOLi2017-05-091-1/+1
| | | | | | | | | | | | | | | Debian zfs package generated by alien doesn't call the prerm script (rpm's %preun) with an integer as first parameter, which results in the following warning: "zfs.prerm: line 2: [: remove: integer expression expected" Modify the if-condition to avoid the warning. Reviewed-by: George Melikov <[email protected]> Reviewed-by: Giuseppe Di Natale <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: loli10K <[email protected]> Closes #6108
* Fix coverity defects: CID 161638Giuseppe Di Natale2017-05-091-1/+4
| | | | | | | | | | CID 161638: Resource leak (RESOURCE_LEAK) Ensure the string array in print_zpool_script_help is freed in cases when there is an error. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Giuseppe Di Natale <[email protected]> Closes #6111
* Linux 4.12 compat: PF_FSTRANS was removedChunwei Chen2017-05-093-3/+3
| | | | | | | | zfsonlinux/spl@8f87971 added __spl_pf_fstrans_check for the xfs related check, so we use them accordingly. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Chunwei Chen <[email protected]> Closes #6113
* Tag 0.7.0-rc4zfs-0.7.0-rc4Brian Behlendorf2017-05-051-1/+1
| | | | | | Fourth release candidate. Signed-off-by: Brian Behlendorf <[email protected]>
* Fix unused variable warningBrian Behlendorf2017-05-051-3/+2
| | | | | | | | | | | Remove the lz4_ac local variable from dmu_write_policy() to resolve the following unused variable warning on non-debug builds. dmu.c: In function ‘dmu_write_policy’: dmu.c:1892:12: warning: unused variable ‘lz4_ac’ [-Wunused-variable] boolean_t lz4_ac = spa_feature_is_active(os->os_spa, Signed-off-by: Brian Behlendorf <[email protected]>
* Add missing *_destroy/*_fini callsGvozden Neskovic2017-05-0413-7/+64
| | | | | | | | | The proposed debugging enhancements in zfsonlinux/spl#587 identified the following missing *_destroy/*_fini calls. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Gvozden Neskovic <[email protected]> Closes #5428
* Default to zvol_request_async=0Brian Behlendorf2017-05-042-2/+2
| | | | | | | | | Change the default ZVOL behavior so requests are handled asynchronously. This behavior is functionally the same as in the zfs-0.6.4 release. Reviewed-by: Chunwei Chen <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #5902
* Enable Linux read-ahead for a single page on ZVOLsRichard Yao2017-05-044-0/+35
| | | | | | | | | | | | | | | | | | | | Linux has read-ahead logic designed to accelerate sequential workloads. ZFS has its own read-ahead logic called zprefetch that operates on both ZVOLs and datasets. Having two prefetchers active at the same time can cause overprefetching, which unnecessarily reduces IOPS performance on CoW filesystems like ZFS. Testing shows that entirely disabling the Linux prefetch results in a significant performance penalty for reads while commensurate benefits are seen in random writes. It appears that read-ahead benefits are inversely proportional to random write benefits, and so a single page of Linux-layer read-ahead appears to offer the middle ground for both workloads. Reviewed-by: Chunwei Chen <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Richard Yao <[email protected]> Issue #5902
* Disable write merging on ZVOLsRageLtMan2017-05-041-0/+3
| | | | | | | | | | | | | | | | | | | The current ZVOL implementation does not explicitly set merge options on ZVOL device queues, which results in the default merge behavior. Explicitly set QUEUE_FLAG_NOMERGES on ZVOL queues allowing the ZIO pipeline to do its work. Initial benchmarks (tiotest with no O_DIRECT) show random write performance going up almost 3X on 8K ZVOLs, even after significant rewrites of the logical space allocation. Reviewed-by: Richard Yao <[email protected]> Reviewed-by: Chunwei Chen <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: RageLtMan <rageltman@sempervictus> Issue #5902
* Update rsend_014_pos and send-c_volume test casesBrian Behlendorf2017-05-042-5/+9
| | | | | | | | | | | | | | The send-c_volume test case has been observed to occasionally fail on 32-bit systems. Until this issue is fully understood disable this test case. The rsend_014_pos test case can occasionally fail due to an EBUSY during export. This can lead to subsequent test failures. Resolve the issue by retrying the export on EBUSY. Additionally, remove the gratuitous use of eval. Reviewed-by: Giuseppe Di Natale <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #6088
* Enable all zfs_destroy test casesBrian Behlendorf2017-05-033-14/+22
| | | | | | | | | | | | | | | | * zfs_destroy_001_pos - Unable to reproduce the failures locally. Re-enabled to determine observed buildbot failure rate. * zfs_destroy_005_neg - Updated for expected Linux behavior. Busy mount points, even snapshots, are expected to fail. * zfs_destroy_010_pos - Resolved transient EBUSY with retry. Reviewed-by: Giuseppe Di Natale <[email protected]> Reviewed-by: George Melikov <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #5635 Issue #5893 Closes #6091
* More ashift improvementsLOLi2017-05-0320-73/+739
| | | | | | | | | | | | | | | | | | | | | | | | | | This commit allow higher ashift values (up to 16) in 'zpool create' The ashift value was previously limited to 13 (8K block) in b41c990 because the limited number of uberblocks we could fit in the statically sized (128K) vdev label ring buffer could prevent the ability the safely roll back a pool to recover it. Since b02fe35 the largest uberblock size we support is 8K: this allow us to store a minimum number of 16 uberblocks in the vdev label, even with higher ashift values. Additionally change 'ashift' pool property behaviour: if set it will be used as the default hint value in subsequent vdev operations ('zpool add', 'attach' and 'replace'). A custom ashift value can still be specified from the command line, if desired. Finally, fix a bug in add-o_ashift.ksh caused by a missing variable. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: loli10K <[email protected]> Closes #2024 Closes #4205 Closes #4740 Closes #5763
* Write label 2,3 uberblocks when vdev expandsOlaf Faaland2017-05-026-2/+174
| | | | | | | | | | | | | | | | | | | | | | When vdev_psize increases, the location of labels 2 and 3 changes because their location is relative to the end of the device. The configs for labels 2 and 3 are written during the next spa_sync() because the vdev is added to the dirty config list. However, the uberblock rings are not re-written in their new location, leaving the device vulnerable to the beginning of the device being overwritten or damaged. This patch copies the uberblock ring from label 0 to labels 2 and 3, in their new locations, at the next sync after vdev_psize increases. Also, add a test zpool_expand_004_pos.ksh to confirm the uberblocks are copied. Reviewed-by: BearBabyLiu <[email protected]> Reviewed-by: Andreas Dilger <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Olaf Faaland <[email protected]> Closes #5108
* Add zfs_nicebytes() to print human-readable sizesLOLi2017-05-0217-67/+124
| | | | | | | | | | | | | | | | * Add zfs_nicebytes() to print human-readable sizes Some 'zfs', 'zpool' and 'zdb' output strings can be confusing to the user when no units are specified. This add a new zfs_nicenum_format "ZFS_NICENUM_BYTES" used to print bytes in their human-readable form. Additionally, update some test cases to use machine-parsable 'zfs get'. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: loli10K <[email protected]> Closes #2414 Closes #3185 Closes #3594 Closes #6032
* Allow scaling of arc in proportion to pagecacheDebabrata Banerjee2017-05-022-2/+37
| | | | | | | | | | | | | | | When multiple filesystems are in use, memory pressure causes arc_cache to collapse to a minimum. Allow arc_cache to maintain proportional size even when hit rates are disproportionate. We do this only via evictable size from the kernel shrinker, thus it's only in effect under memory pressure. AKAMAI: zfs: CR 3695072 Reviewed-by: Tim Chase <[email protected]> Reviewed-by: Richard Yao <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Debabrata Banerjee <[email protected]> Closes #6035
* Correct signed operationDebabrata Banerjee2017-05-021-2/+2
| | | | | | | | | | | Could return the wrong pages value AKAMAI: zfs: CR 3695072 Reviewed-by: Tim Chase <[email protected]> Reviewed-by: Richard Yao <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Debabrata Banerjee <[email protected]> Issue #6035
* Don't run the reaper if we didn't shrink the cacheDebabrata Banerjee2017-05-021-6/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Calling it when nothing is evictable will cause extra kswapd cpu. Also if we didn't shrink it's unlikely to have memory to reap because we likely just called it microseconds ago. The exception is if we are in direct reclaim. You can see how hard this is being hit in kswapd with a light test workload: 34.95% [zfs] [k] arc_kmem_reap_now 5.40% [spl] [k] spl_kmem_cache_reap_now 3.79% [kernel] [k] _raw_spin_lock 2.86% [spl] [k] __spl_kmem_cache_generic_shrinker.isra.7 2.70% [kernel] [k] shrink_slab.part.37 1.93% [kernel] [k] isolate_lru_pages.isra.43 1.55% [kernel] [k] __wake_up_bit 1.20% [kernel] [k] super_cache_count 1.20% [kernel] [k] __radix_tree_lookup With ZFS just mounted but only ext4/pagecache memory pressure arc_kmem_reap_now still consumes excessive CPU: 12.69% [kernel] [k] isolate_lru_pages.isra.43 10.76% [kernel] [k] free_pcppages_bulk 7.98% [kernel] [k] drop_buffers 7.31% [kernel] [k] shrink_page_list 6.44% [zfs] [k] arc_kmem_reap_now 4.19% [kernel] [k] free_hot_cold_page 4.00% [kernel] [k] __slab_free 3.95% [kernel] [k] __isolate_lru_page 3.09% [kernel] [k] __radix_tree_lookup Same pagecache only workload as above with this patch series: 11.58% [kernel] [k] isolate_lru_pages.isra.43 11.20% [kernel] [k] drop_buffers 9.67% [kernel] [k] free_pcppages_bulk 8.44% [kernel] [k] shrink_page_list 4.86% [kernel] [k] __isolate_lru_page 4.43% [kernel] [k] free_hot_cold_page 4.00% [kernel] [k] __slab_free 3.44% [kernel] [k] __radix_tree_lookup (arc_kmem_reap_now has 0 samples in perf) AKAMAI: zfs: CR 3695042 Reviewed-by: Tim Chase <[email protected]> Reviewed-by: Richard Yao <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Debabrata Banerjee <[email protected]> Issue #6035
* Only wakeup waiters if we've actually done workDebabrata Banerjee2017-05-021-5/+5
| | | | | | | | | AKAMAI: zfs: CR 3695072 Reviewed-by: Tim Chase <[email protected]> Reviewed-by: Richard Yao <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Debabrata Banerjee <[email protected]> Issue #6035
* Do not stop kernel shrinker on lock contentionDebabrata Banerjee2017-05-021-1/+1
| | | | | | | | | | | | | | | | Lock contention, by itself, shouldn't indicate a stop condition to the kernel's slab shrinker. Doing so can cause stalls when the kernel is trying to free large parts of the cache such as is done by drop_caches Also, perhaps arc_reclaim_lock should be a spinlock, and this code eliminated. AKAMAI: zfs: CR 3593801 Reviewed-by: Tim Chase <[email protected]> Reviewed-by: Richard Yao <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Debabrata Banerjee <[email protected]> Issue #6035
* Stop double reclaiming or not reclaiming at allDebabrata Banerjee2017-05-021-2/+3
| | | | | | | | | | | | | | | | Move arcstat_need_free increment from all direct calls to when arc_reclaim_lock is busy and we exit wihout doing anything. Data will be reclaimed in reclaim thread. The previous location meant that we both reclaim the memory in this thread, and also schedule the same amount of memory for reclaim in arc_reclaim, effectively doubling the requested reclaim. AKAMAI: zfs: CR 3695072 Reviewed-by: Tim Chase <[email protected]> Reviewed-by: Richard Yao <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Debabrata Banerjee <[email protected]> Issue #6035
* Make arc_need_free updates atomicDebabrata Banerjee2017-05-021-6/+7
| | | | | | | | | | | Ensures proper accounting of bytes we requested to free AKAMAI: zfs: CR 3695072 Reviewed-by: Tim Chase <[email protected]> Reviewed-by: Richard Yao <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Debabrata Banerjee <[email protected]> Issue #6035
* Don't report ghost buffers as evictable memDebabrata Banerjee2017-05-021-7/+2
| | | | | | | | | | | Ghost meta/data buffers are not actually allocated AKAMAI: zfs: CR 3695072 Reviewed-by: Tim Chase <[email protected]> Reviewed-by: Richard Yao <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Debabrata Banerjee <[email protected]> Issue #6035
* minor improvement to abd_free_pages()jxiong2017-05-021-8/+6
| | | | | | | | | | | It doesn't need to have a loop to free page in a single scatterlist entry because it should be single or compound page. The pages can be freed in one invocation to __free_pages() for both cases. Reviewed-by: Gvozden Neskovic <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Richard Yao <[email protected]> Signed-off-by: Jinshan Xiong <[email protected]> Closes #6057
* Guarantee PAGESIZE alignment for large zio buffersjxiong2017-05-021-2/+2
| | | | | | | | | | | | | | | | | | | In current implementation, only zio buffers in 16KB and bigger are guaranteed PAGESIZE alignment. This breaks Lustre since it assumes that 'arc_buf_t::b_data' must be page aligned when zio buffers are greater than or equal to PAGESIZE. This patch will make the zio buffers to be PAGESIZE aligned when the sizes are not less than PAGESIZE. This change may cause a little bit memory waste but that should be fine because after ABD is introduced, zio buffers are used to hold data temporarily and live in memory for a short while. Reviewed-by: Don Brady <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Jinshan Xiong <[email protected]> Signed-off-by: Jinshan Xiong <[email protected]> Closes #6084
* Linux 4.12 compat: super_setup_bdi_name()Brian Behlendorf2017-05-026-54/+141
| | | | | | | | | | All filesystems were converted to dynamically allocated BDIs. The destruction of backing_dev_info structures is handled as part of super block destruction. Refactor the code to abstract away the details of creating and destroying a BDI. Reviewed-by: Chunwei Chen <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #6089
* OpenZFS 7786 - zfs`vdev_online() needs better notification about state changesYuri Pankov2017-05-011-6/+8
| | | | | | | | | | | | | | Authored by: Yuri Pankov <[email protected]> Reviewed by: Matthew Ahrens <[email protected]> Reviewed by: George Wilson <[email protected]> Approved by: Albert Lee <[email protected]> Reviewed-by: Giuseppe Di Natale <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Ported-by: bunder2015 <[email protected]> OpenZFS-issue: https://www.illumos.org/issues/7786 OpenZFS-commit: http://github.com/openzfs/openzfs/commit/db8498f Closes #6074
* Limit zfs_dirty_data_max_max to 4GBrian Behlendorf2017-05-011-3/+3
| | | | | | | | | | Reinstate default 4G zfs_dirty_data_max_max limit. Reviewed-by: Giuseppe Di Natale <[email protected]> Reviewed-by: Chunwei Chen <[email protected]> Reviewed-by: George Melikov <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #6072 Closes #6081
* Reinstate zvol_taskq to fix aio on zvolChunwei Chen2017-04-263-82/+199
| | | | | | | | | | | | | | | | | | | | | | | Commit 37f9dac removed the zvol_taskq for processing zvol requests. This was removed as part of switching to make_request_fn and was motivated by a concern at the time over dispatch latency. However, this also made all bio request synchronous, and caused serious performance issues as the bio submitter would wait for every bio it submitted, effectively making the IO depth 1. This patch reinstate zvol_taskq, and to make sure overlapped I/Os are ordered properly, we take range lock in zvol_request, and pass it along with bio to the I/O functions zvol_{write,discard,read}. In order to facilitate benchmarks a zvol_request_sync module option was added to switch between sync and async request handling. For the moment, the default behavior is synchronous but this is likely to change pending additional testing. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Chunwei Chen <[email protected]> Closes #5824
* Update documentation for zfs_vdev_queue_depth_pctTim Chase2017-04-261-2/+10
| | | | | | | | | | | | | It was documented as being related to zfs_vdev_async_max_active when it is actually related to zfs_vdev_async_write_max_active. Also, expand the documentation to describe the allocation throttle which was introduced as part of OpenZFS 7090 in 3dfb57a. Reviewed-by: Richard Yao <[email protected]> Reviewed-by: Reviewed-by: George Melikov <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Tim Chase <[email protected]> Closes #6064
* OpenZFS 7252 - compressed zfs send / receiveDan Kimmel2017-04-2641-104/+1668
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | OpenZFS 7252 - compressed zfs send / receive OpenZFS 7628 - create long versions of ZFS send / receive options Authored by: Dan Kimmel <[email protected]> Reviewed by: George Wilson <[email protected]> Reviewed by: John Kennedy <[email protected]> Reviewed by: Matthew Ahrens <[email protected]> Reviewed by: Paul Dagnelie <[email protected]> Reviewed by: Pavel Zakharov <[email protected]> Reviewed by: Sebastien Roy <[email protected]> Reviewed by: David Quigley <[email protected]> Reviewed by: Thomas Caputi <[email protected]> Approved by: Dan McDonald <[email protected]> Reviewed by: David Quigley <[email protected]> Reviewed-by: loli10K <[email protected]> Ported-by: bunder2015 <[email protected]> Ported-by: Don Brady <[email protected]> Ported-by: Brian Behlendorf <[email protected]> Porting Notes: - Most of 7252 was already picked up during ABD work. This commit represents the gap from the final commit to openzfs. - Fixed split_large_blocks check in do_dump() - An alternate version of the write_compressible() function was implemented for Linux which does not depend on fio. The behavior of fio differs significantly based on the exact version. - mkholes was replaced with truncate for Linux. OpenZFS-issue: https://www.illumos.org/issues/7252 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/5602294 Closes #6067
* Change U16 to U32 due to atomic_inc_32_nvwli52017-04-251-2/+2
| | | | | | | | | After run a long time with QAT compression, the variable "inst_num" is overflow by "atomic_inc_32_nv", which causes its neighbor variable overwritten. Change its definition from U16 to U32. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Weigang Li <[email protected]> Closes #6051
* Fix typo in zfs-module-parameters man pagebunder20152017-04-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix typo in zfs-module-parameters man page Reviewed-by: Richard Laager <[email protected]> Reviewed-by: Mike McQuaid <[email protected]> Reviewed-by: Paul Dagnelie <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Gvozden Neskovic <[email protected]> Reviewed-by: Neal Gompa <[email protected]> Reviewed-by: Jason Zaman <[email protected]> Reviewed-by: Ned Bass <[email protected]> Reviewed-by: Jorgen Lundman <[email protected]> Reviewed-by: Prakash Surya <[email protected]> Reviewed-by: Hajo Möller <[email protected]> Reviewed-by: Igor Kozhukhov <[email protected]> Reviewed-by: Richard Yao <[email protected]> Reviewed-by: Tim Chase <[email protected]> Reviewed-by: DHE <[email protected]> Reviewed-by: Matthew Thode <[email protected]> Reviewed-by: Thomas Caputi <[email protected]> Reviewed-by: George Melikov <[email protected]> Reviewed-by: kernelOfTruth <[email protected]> Reviewed-by: Kash Pande <[email protected]> Reviewed-by: ilovezfs <[email protected]> Reviewed-by: @jwittlincohen Reviewed-by: Jack Draak <[email protected]> Reviewed-by: @ptx0 Reviewed-by: Giuseppe Di Natale <[email protected]> Reviewed-by: @Kokokokoka Reviewed-by: @JCount <[email protected]> Signed-off-by: bunder2015 <[email protected]> Closes #6054
* OpenZFS 8025 - dbuf_read() creates unnecessary zio_root() for bonus bufMatthew Ahrens2017-04-241-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Authored by: Matthew Ahrens <[email protected]> Reviewed by: Dan Kimmel <[email protected]> Reviewed by: Pavel Zakharov <[email protected]> Reviewed by: Prashanth Sreenivasa <[email protected]> Approved by: Robert Mustacchi <[email protected]> Ported-by: Brian Behlendorf <[email protected]> dbuf_read() creates a zio_root() to track and wait for all the zio's that may happen as part of this call. However, if the blkptr_t for this buffer is NULL or a hole, we will not create any more zio's, so this zio_root() is unnecessary. This is always the case when calling dbuf_read() on a bonus buffer, because it has no blkptr (it's part of the containing dnode). For workloads that read a lot of bonus buffers (e.g. file creation and removal), creating and destroying these unnecessary zio's can decrease performance by around 3%. The fix is to only create/destroy the zio_root() in dbuf_read() if the blkptr is not NULL and not a hole. Porting Notes: - The error handling for when dbuf_read_impl() fails which was originally added in commit 5f6d0b6f5 has been preserved. OpenZFS-issue: https://www.illumos.org/issues/8025 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/8ec5c7c Closes #6048
* Typo in zfs-module-parameters(5)DeHackEd2017-04-241-1/+1
| | | | | Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: DHE <[email protected]> Closes #6061
* Fix 'zpool iostat -v' cache and log outputDeHackEd2017-04-241-0/+2
| | | | | | | | | Fixes formatting errors from commit d6418de057 Reviewed-by: George Melikov <[email protected]> Reviewed-by: loli10K <[email protected]> Reviewed-by: Tony Hutter <[email protected]> Signed-off-by: DHE <[email protected]> Closes #6060
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