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* Fix Large kmem_alloc in vdev_metaslab_initChunwei Chen2016-07-121-3/+3
| | | | | | | | | | | | | | | | | | | | | | This allocation can go way over 1MB, so we should use vmem_alloc instead of kmem_alloc. Large kmem_alloc(1430784, 0x1000), please file an issue... Call Trace: [<ffffffffa0324aff>] ? spl_kmem_zalloc+0xef/0x160 [spl] [<ffffffffa17d0c8d>] ? vdev_metaslab_init+0x9d/0x1f0 [zfs] [<ffffffffa17d46d0>] ? vdev_load+0xc0/0xd0 [zfs] [<ffffffffa17d4643>] ? vdev_load+0x33/0xd0 [zfs] [<ffffffffa17c0004>] ? spa_load+0xfc4/0x1b60 [zfs] [<ffffffffa17c1838>] ? spa_tryimport+0x98/0x430 [zfs] [<ffffffffa17f28b1>] ? zfs_ioc_pool_tryimport+0x41/0x80 [zfs] [<ffffffffa17f5669>] ? zfsdev_ioctl+0x4a9/0x4e0 [zfs] [<ffffffff811bacdf>] ? do_vfs_ioctl+0x2cf/0x4b0 [<ffffffff811baf41>] ? SyS_ioctl+0x81/0xa0 Signed-off-by: Chunwei Chen <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #4752
* Don't allow accessing XATTR via export handleChunwei Chen2016-07-121-0/+8
| | | | | | | | | | Allow accessing XATTR through export handle is a very bad idea. It would allow user to write whatever they want in fields where they otherwise could not. Signed-off-by: Chunwei Chen <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #4828
* Fix get_zfs_sb race with concurrent umountChunwei Chen2016-07-121-3/+3
| | | | | | | | | | | | | | | | | | | | | Certain ioctl operations will call get_zfs_sb, which will holds an active count on sb without checking whether it's active or not. This will result in use-after-free. We fix this by using atomic_inc_not_zero to make sure we got an active sb. P1 P2 --- --- deactivate_locked_super(): s_active = 0 zfs_sb_hold() ->get_zfs_sb(): s_active = 1 ->zpl_kill_sb() -->zpl_put_super() --->zfs_umount() ---->zfs_sb_free(zsb) zfs_sb_rele(zsb) Signed-off-by: Chunwei Chen <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]>
* Allow building with `CFLAGS="-O0"`Gvozden Neskovic2016-07-112-1/+9
| | | | | | | | | | | | | If compiled with -O0, gcc doesn't do any stack frame coalescing and -Wframe-larger-than=1024 is triggered in debug mode. Starting with gcc 4.8, new opt level -Og is introduced for debugging, which does not trigger this warning. Fix bench zio size, using SPA_OLD_MAXBLOCKSHIFT Signed-off-by: Gvozden Neskovic <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #4799
* Merge branch 'illumos-2605'Brian Behlendorf2016-06-2971-970/+2627
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adds support for resuming interrupted zfs send streams and include all related send/recv bug fixes from upstream OpenZFS. Unlike the upstream implementation this branch does not change the existing ioctl interface. Instead a new ZFS_IOC_RECV_NEW ioctl was added to support resuming zfs send streams. This was done by applying the original upstream patch and then reverting the ioctl changes in a follow up patch. For this reason there are a handful on commits between the relevant patches on this branch which are not interoperable. This was done to make it easier to extract the new ZFS_IOC_RECV_NEW and submit it upstream. Signed-off-by: Brian Behlendorf <[email protected]> Closes #4742
| * Vectorized fletcher_4 must be 128-bit alignedBrian Behlendorf2016-06-291-2/+12
| | | | | | | | | | | | | | | | | | | | | | | | The fletcher_4_native() and fletcher_4_byteswap() functions may only safely use the vectorized implementations when the buffer is 128-bit aligned. This is because both the AVX2 and SSE implementations process four 32-bit words per iterations. Fallback to the scalar implementation which only processes a single 32-bit word for unaligned buffers. Signed-off-by: Brian Behlendorf <[email protected]> Signed-off-by: Gvozden Neskovic <[email protected]> Issue #4330
| * OpenZFS 6876 - Stack corruption after importing a pool with a too-long namePaul Dagnelie2016-06-283-2/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Reviewed by: Prakash Surya <[email protected]> Reviewed by: Dan Kimmel <[email protected]> Reviewed by: George Wilson <[email protected]> Reviewed by: Yuri Pankov <[email protected]> Ported-by: Brian Behlendorf <[email protected]> Calling dsl_dataset_name on a dataset with a 256 byte buffer is asking for trouble. We should check every dataset on import, using a 1024 byte buffer and checking each time to see if the dataset's new name is longer than 256 bytes. OpenZFS-issue: https://www.illumos.org/issues/6876 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/ca8674e
| * OpenZFS 6314 - buffer overflow in dsl_dataset_nameIgor Kozhukhov2016-06-2841-335/+298
| | | | | | | | | | | | | | | | | | | | | | Reviewed by: George Wilson <[email protected]> Reviewed by: Prakash Surya <[email protected]> Reviewed by: Igor Kozhukhov <[email protected]> Approved by: Dan McDonald <[email protected]> Ported-by: Brian Behlendorf <[email protected]> OpenZFS-issue: https://www.illumos.org/issues/6314 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/d6160ee
| * Implement zfs_ioc_recv_new() for OpenZFS 2605Brian Behlendorf2016-06-286-265/+518
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adds ZFS_IOC_RECV_NEW for resumable streams and preserves the legacy ZFS_IOC_RECV user/kernel interface. The new interface supports all stream options but is currently only used for resumable streams. This way updated user space utilities will interoperate with older kernel modules. ZFS_IOC_RECV_NEW is modeled after the existing ZFS_IOC_SEND_NEW handler. Non-Linux OpenZFS platforms have opted to change the legacy interface in an incompatible fashion instead of adding a new ioctl. Signed-off-by: Brian Behlendorf <[email protected]>
| * OpenZFS 6562 - Refquota on receive doesn't account for overageDan McDonald2016-06-282-5/+29
| | | | | | | | | | | | | | | | | | | | | | | | Authored by: Dan McDonald <[email protected]> Reviewed by: Matthew Ahrens <[email protected]> Reviewed by: Yuri Pankov <[email protected]> Reviewed by: Toomas Soome <[email protected]> Approved by: Gordon Ross <[email protected]> Ported-by: Brian Behlendorf <[email protected]> OpenZFS-issue: https://www.illumos.org/issues/6562 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/5f7a8e6
| * OpenZFS 4986 - receiving replication stream fails if any snapshot exceeds ↵Dan McDonald2016-06-282-19/+121
| | | | | | | | | | | | | | | | | | | | | | | | | | refquota Authored by: Dan McDonald <[email protected]> Reviewed by: John Kennedy <[email protected]> Reviewed by: Matthew Ahrens <[email protected]> Approved by: Gordon Ross <[email protected]> Ported-by: Brian Behlendorf <[email protected]> OpenZFS-issue: https://www.illumos.org/issues/4986 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/5878fad
| * OpenZFS 6738 - zfs send stream padding needs documentationEli Rosenthal2016-06-281-1/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | Authored by: Eli Rosenthal <[email protected]> Reviewed by: Matthew Ahrens <[email protected]> Reviewed by: Dan Kimmel <[email protected]> Reviewed by: Paul Dagnelie <[email protected]> Reviewed by: Dan McDonald <[email protected]> Approved by: Robert Mustacchi <[email protected]> Ported-by: Brian Behlendorf <[email protected]> OpenZFS-issue: https://www.illumos.org/issues/6738 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/c20404ff
| * OpenZFS 6536 - zfs send: want a way to disable setting of DRR_FLAG_FREERECORDSAndrew Stormont2016-06-282-1/+10
| | | | | | | | | | | | | | | | | | | | | | | | Authored by: Andrew Stormont <[email protected]> Reviewed by: Anil Vijarnia <[email protected]> Reviewed by: Kim Shrier <[email protected]> Reviewed by: Matthew Ahrens <[email protected]> Approved by: Dan McDonald <[email protected]> Ported-by: Brian Behlendorf <[email protected]> OpenZFS-issue: https://www.illumos.org/issues/6536 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/880094b
| * OpenZFS 6393 - zfs receive a full send as a clonePaul Dagnelie2016-06-285-64/+131
| | | | | | | | | | | | | | | | | | | | | | | | Authored by: Paul Dagnelie <[email protected]> Reviewed by: Matthew Ahrens <[email protected]> Reviewed by: Prakash Surya <[email protected]> Reviewed by: Richard Elling <[email protected]> Approved by: Dan McDonald <[email protected]> Ported-by: Brian Behlendorf <[email protected]> OpenZFS-issue: https://www.illumos.org/issues/6394 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/68ecb2e
| * OpenZFS 6051 - lzc_receive: allow the caller to read the begin recordBrian Behlendorf2016-06-282-8/+41
| | | | | | | | | | | | | | | | | | | | Reviewed by: Matthew Ahrens <[email protected]> Reviewed by: Paul Dagnelie <[email protected]> Approved by: Robert Mustacchi <[email protected]> Ported-by: Brian Behlendorf <[email protected]> OpenZFS-issue: https://www.illumos.org/issues/6051 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/620f322
| * OpenZFS 2605, 6980, 6902Matthew Ahrens2016-06-2840-337/+1483
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2605 want to resume interrupted zfs send Reviewed by: George Wilson <[email protected]> Reviewed by: Paul Dagnelie <[email protected]> Reviewed by: Richard Elling <[email protected]> Reviewed by: Xin Li <[email protected]> Reviewed by: Arne Jansen <[email protected]> Approved by: Dan McDonald <[email protected]> Ported-by: kernelOfTruth <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> OpenZFS-issue: https://www.illumos.org/issues/2605 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/9c3fd12 6980 6902 causes zfs send to break due to 32-bit/64-bit struct mismatch Reviewed by: Paul Dagnelie <[email protected]> Reviewed by: George Wilson <[email protected]> Approved by: Robert Mustacchi <[email protected]> Ported by: Brian Behlendorf <[email protected]> OpenZFS-issue: https://www.illumos.org/issues/6980 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/ea4a67f Porting notes: - All rsend and snapshop tests enabled and updated for Linux. - Fix misuse of input argument in traverse_visitbp(). - Fix ISO C90 warnings and errors. - Fix gcc 'missing braces around initializer' in 'struct send_thread_arg to_arg =' warning. - Replace 4 argument fletcher_4_native() with 3 argument version, this change was made in OpenZFS 4185 which has not been ported. - Part of the sections for 'zfs receive' and 'zfs send' was rewritten and reordered to approximate upstream. - Fix mktree xattr creation, 'user.' prefix required. - Minor fixes to newly enabled test cases - Long holds for volumes allowed during receive for minor registration.
* Sync DMU_BACKUP_FEATURE_* flagsBrian Behlendorf2016-06-241-1/+2
| | | | | | | | | | Flag 20 was used in OpenZFS as DMU_BACKUP_FEATURE_RESUMING. The DMU_BACKUP_FEATURE_LARGE_DNODE flag must be shifted to 21 and then reserved in the upstream OpenZFS implementation. Signed-off-by: Brian Behlendorf <[email protected]> Signed-off-by: Ned Bass <[email protected]> Closes #4795
* Implement large_dnode pool featureNed Bass2016-06-2464-224/+1575
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Justification ------------- This feature adds support for variable length dnodes. Our motivation is to eliminate the overhead associated with using spill blocks. Spill blocks are used to store system attribute data (i.e. file metadata) that does not fit in the dnode's bonus buffer. By allowing a larger bonus buffer area the use of a spill block can be avoided. Spill blocks potentially incur an additional read I/O for every dnode in a dnode block. As a worst case example, reading 32 dnodes from a 16k dnode block and all of the spill blocks could issue 33 separate reads. Now suppose those dnodes have size 1024 and therefore don't need spill blocks. Then the worst case number of blocks read is reduced to from 33 to two--one per dnode block. In practice spill blocks may tend to be co-located on disk with the dnode blocks so the reduction in I/O would not be this drastic. In a badly fragmented pool, however, the improvement could be significant. ZFS-on-Linux systems that make heavy use of extended attributes would benefit from this feature. In particular, ZFS-on-Linux supports the xattr=sa dataset property which allows file extended attribute data to be stored in the dnode bonus buffer as an alternative to the traditional directory-based format. Workloads such as SELinux and the Lustre distributed filesystem often store enough xattr data to force spill bocks when xattr=sa is in effect. Large dnodes may therefore provide a performance benefit to such systems. Other use cases that may benefit from this feature include files with large ACLs and symbolic links with long target names. Furthermore, this feature may be desirable on other platforms in case future applications or features are developed that could make use of a larger bonus buffer area. Implementation -------------- The size of a dnode may be a multiple of 512 bytes up to the size of a dnode block (currently 16384 bytes). A dn_extra_slots field was added to the current on-disk dnode_phys_t structure to describe the size of the physical dnode on disk. The 8 bits for this field were taken from the zero filled dn_pad2 field. The field represents how many "extra" dnode_phys_t slots a dnode consumes in its dnode block. This convention results in a value of 0 for 512 byte dnodes which preserves on-disk format compatibility with older software. Similarly, the in-memory dnode_t structure has a new dn_num_slots field to represent the total number of dnode_phys_t slots consumed on disk. Thus dn->dn_num_slots is 1 greater than the corresponding dnp->dn_extra_slots. This difference in convention was adopted because, unlike on-disk structures, backward compatibility is not a concern for in-memory objects, so we used a more natural way to represent size for a dnode_t. The default size for newly created dnodes is determined by the value of a new "dnodesize" dataset property. By default the property is set to "legacy" which is compatible with older software. Setting the property to "auto" will allow the filesystem to choose the most suitable dnode size. Currently this just sets the default dnode size to 1k, but future code improvements could dynamically choose a size based on observed workload patterns. Dnodes of varying sizes can coexist within the same dataset and even within the same dnode block. For example, to enable automatically-sized dnodes, run # zfs set dnodesize=auto tank/fish The user can also specify literal values for the dnodesize property. These are currently limited to powers of two from 1k to 16k. The power-of-2 limitation is only for simplicity of the user interface. Internally the implementation can handle any multiple of 512 up to 16k, and consumers of the DMU API can specify any legal dnode value. The size of a new dnode is determined at object allocation time and stored as a new field in the znode in-memory structure. New DMU interfaces are added to allow the consumer to specify the dnode size that a newly allocated object should use. Existing interfaces are unchanged to avoid having to update every call site and to preserve compatibility with external consumers such as Lustre. The new interfaces names are given below. The versions of these functions that don't take a dnodesize parameter now just call the _dnsize() versions with a dnodesize of 0, which means use the legacy dnode size. New DMU interfaces: dmu_object_alloc_dnsize() dmu_object_claim_dnsize() dmu_object_reclaim_dnsize() New ZAP interfaces: zap_create_dnsize() zap_create_norm_dnsize() zap_create_flags_dnsize() zap_create_claim_norm_dnsize() zap_create_link_dnsize() The constant DN_MAX_BONUSLEN is renamed to DN_OLD_MAX_BONUSLEN. The spa_maxdnodesize() function should be used to determine the maximum bonus length for a pool. These are a few noteworthy changes to key functions: * The prototype for dnode_hold_impl() now takes a "slots" parameter. When the DNODE_MUST_BE_FREE flag is set, this parameter is used to ensure the hole at the specified object offset is large enough to hold the dnode being created. The slots parameter is also used to ensure a dnode does not span multiple dnode blocks. In both of these cases, if a failure occurs, ENOSPC is returned. Keep in mind, these failure cases are only possible when using DNODE_MUST_BE_FREE. If the DNODE_MUST_BE_ALLOCATED flag is set, "slots" must be 0. dnode_hold_impl() will check if the requested dnode is already consumed as an extra dnode slot by an large dnode, in which case it returns ENOENT. * The function dmu_object_alloc() advances to the next dnode block if dnode_hold_impl() returns an error for a requested object. This is because the beginning of the next dnode block is the only location it can safely assume to either be a hole or a valid starting point for a dnode. * dnode_next_offset_level() and other functions that iterate through dnode blocks may no longer use a simple array indexing scheme. These now use the current dnode's dn_num_slots field to advance to the next dnode in the block. This is to ensure we properly skip the current dnode's bonus area and don't interpret it as a valid dnode. zdb --- The zdb command was updated to display a dnode's size under the "dnsize" column when the object is dumped. For ZIL create log records, zdb will now display the slot count for the object. ztest ----- Ztest chooses a random dnodesize for every newly created object. The random distribution is more heavily weighted toward small dnodes to better simulate real-world datasets. Unused bonus buffer space is filled with non-zero values computed from the object number, dataset id, offset, and generation number. This helps ensure that the dnode traversal code properly skips the interior regions of large dnodes, and that these interior regions are not overwritten by data belonging to other dnodes. A new test visits each object in a dataset. It verifies that the actual dnode size matches what was stored in the ztest block tag when it was created. It also verifies that the unused bonus buffer space is filled with the expected data patterns. ZFS Test Suite -------------- Added six new large dnode-specific tests, and integrated the dnodesize property into existing tests for zfs allow and send/recv. Send/Receive ------------ ZFS send streams for datasets containing large dnodes cannot be received on pools that don't support the large_dnode feature. A send stream with large dnodes sets a DMU_BACKUP_FEATURE_LARGE_DNODE flag which will be unrecognized by an incompatible receiving pool so that the zfs receive will fail gracefully. While not implemented here, it may be possible to generate a backward-compatible send stream from a dataset containing large dnodes. The implementation may be tricky, however, because the send object record for a large dnode would need to be resized to a 512 byte dnode, possibly kicking in a spill block in the process. This means we would need to construct a new SA layout and possibly register it in the SA layout object. The SA layout is normally just sent as an ordinary object record. But if we are constructing new layouts while generating the send stream we'd have to build the SA layout object dynamically and send it at the end of the stream. For sending and receiving between pools that do support large dnodes, the drr_object send record type is extended with a new field to store the dnode slot count. This field was repurposed from unused padding in the structure. ZIL Replay ---------- The dnode slot count is stored in the uppermost 8 bits of the lr_foid field. The bits were unused as the object id is currently capped at 48 bits. Resizing Dnodes --------------- It should be possible to resize a dnode when it is dirtied if the current dnodesize dataset property differs from the dnode's size, but this functionality is not currently implemented. Clearly a dnode can only grow if there are sufficient contiguous unused slots in the dnode block, but it should always be possible to shrink a dnode. Growing dnodes may be useful to reduce fragmentation in a pool with many spill blocks in use. Shrinking dnodes may be useful to allow sending a dataset to a pool that doesn't support the large_dnode feature. Feature Reference Counting -------------------------- The reference count for the large_dnode pool feature tracks the number of datasets that have ever contained a dnode of size larger than 512 bytes. The first time a large dnode is created in a dataset the dataset is converted to an extensible dataset. This is a one-way operation and the only way to decrement the feature count is to destroy the dataset, even if the dataset no longer contains any large dnodes. The complexity of reference counting on a per-dnode basis was too high, so we chose to track it on a per-dataset basis similarly to the large_block feature. Signed-off-by: Ned Bass <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #3542
* Backfill metadnode more intelligentlyNed Bass2016-06-244-11/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Only attempt to backfill lower metadnode object numbers if at least 4096 objects have been freed since the last rescan, and at most once per transaction group. This avoids a pathology in dmu_object_alloc() that caused O(N^2) behavior for create-heavy workloads and substantially improves object creation rates. As summarized by @mahrens in #4636: "Normally, the object allocator simply checks to see if the next object is available. The slow calls happened when dmu_object_alloc() checks to see if it can backfill lower object numbers. This happens every time we move on to a new L1 indirect block (i.e. every 32 * 128 = 4096 objects). When re-checking lower object numbers, we use the on-disk fill count (blkptr_t:blk_fill) to quickly skip over indirect blocks that don’t have enough free dnodes (defined as an L2 with at least 393,216 of 524,288 dnodes free). Therefore, we may find that a block of dnodes has a low (or zero) fill count, and yet we can’t allocate any of its dnodes, because they've been allocated in memory but not yet written to disk. In this case we have to hold each of the dnodes and then notice that it has been allocated in memory. The end result is that allocating N objects in the same TXG can require CPU usage proportional to N^2." Add a tunable dmu_rescan_dnode_threshold to define the number of objects that must be freed before a rescan is performed. Don't bother to export this as a module option because testing doesn't show a compelling reason to change it. The vast majority of the performance gain comes from limit the rescan to at most once per TXG. Signed-off-by: Ned Bass <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]>
* xattrtest: allow verify with -R and other improvementsNed Bass2016-06-241-68/+124
| | | | | | | | | | | | | | | | | | | | | | | | | - Use a fixed buffer of random bytes when random xattr values are in effect. This eliminates the potential performance bottleneck of reading from /dev/urandom for each file. This also allows us to verify xattrs in random value mode. - Show the rate of operations per second in addition to elapsed time for each phase of the test. This may be useful for benchmarking. - Set default xattr size to 6 so that verify doesn't fail if user doesn't specify a size. We need at least six bytes to store the leading "size=X" string that is used for verification. - Allow user to execute just one phase of the test. Acceptable values for -o and their meanings are: 1 - run the create phase 2 - run the setxattr phase 3 - run the getxattr phase 4 - run the unlink phase Signed-off-by: Ned Bass <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]>
* FreeBSD rS271776 - Persist vdev_resilver_txg changessmh2016-06-241-2/+5
| | | | | | | | | | | | | | Persist vdev_resilver_txg changes to avoid panic caused by validation vs a vdev_resilver_txg value from a previous resilver. Authored-by: smh <[email protected]> Ported-by: Chris Dunlop <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> OpenZFS-issue: https://www.illumos.org/issues/5154 FreeBSD-issue: https://reviews.freebsd.org/rS271776 FreeBSD-commit: https://github.com/freebsd/freebsd/commit/c3c60bf Closes #4790
* OpenZFS 6878 - Add scrub completion info to "zpool history"Nav Ravindranath2016-06-241-5/+19
| | | | | | | | | | | | | Reviewed by: Matthew Ahrens <[email protected]> Reviewed by: Dan Kimmel <[email protected]> Approved by: Dan McDonald <[email protected]> Authored by: Nav Ravindranath <[email protected]> Ported-by: Chris Dunlop <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> OpenZFS-issue: https://www.illumos.org/issues/6878 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/1825bc5 Closes #4787
* Revert "Add a test case for dmu_free_long_range() to ztest"Brian Behlendorf2016-06-241-178/+0
| | | | | | | | | | This reverts commit d0de2e82df579f4e4edf5643b674a1464fae485f which introduced a new test case to ztest which is failing occasionally during automated testing. The change is being reverted until the issue can be fully investigated. Signed-off-by: Brian Behlendorf <[email protected]> Issue #4754
* Add a test case for dmu_free_long_range() to ztestBoris Protopopov2016-06-211-0/+178
| | | | | | Signed-off-by: Boris Protopopov <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #4754
* OpenZFS 6513 - partially filled holes lose birth timePaul Dagnelie2016-06-219-54/+192
| | | | | | | | | | | | | | | | | | | | Reviewed by: Matthew Ahrens <[email protected]> Reviewed by: George Wilson <[email protected]> Reviewed by: Boris Protopopov <[email protected]> Approved by: Richard Lowe <[email protected]>a Ported by: Boris Protopopov <[email protected]> Signed-off-by: Boris Protopopov <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> OpenZFS-issue: https://www.illumos.org/issues/6513 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/8df0bcf0 If a ZFS object contains a hole at level one, and then a data block is created at level 0 underneath that l1 block, l0 holes will be created. However, these l0 holes do not have the birth time property set; as a result, incremental sends will not send those holes. Fix is to modify the dbuf_read code to fill in birth time data.
* Fix NFS credentialChunwei Chen2016-06-213-12/+10
| | | | | | | | | | | | | | | | The commit f74b821 caused a regression where creating file through NFS will always create a file owned by root. This is because the patch enables the KSID code in zfs_acl_ids_create, which it would use euid and egid of the current process. However, on Linux, we should use fsuid and fsgid for file operations, which is the original behaviour. So we revert this part of code. The patch also enables secpolicy_vnode_*, since they are also used in file operations, we change them to use fsuid and fsgid. Signed-off-by: Chunwei Chen <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #4772 Closes #4758
* SIMD implementation of vdev_raidz generate and reconstruct routinesGvozden Neskovic2016-06-2131-161/+6811
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a new implementation of RAIDZ1/2/3 routines using x86_64 scalar, SSE, and AVX2 instruction sets. Included are 3 parity generation routines (P, PQ, and PQR) and 7 reconstruction routines, for all RAIDZ level. On module load, a quick benchmark of supported routines will select the fastest for each operation and they will be used at runtime. Original implementation is still present and can be selected via module parameter. Patch contains: - specialized gen/rec routines for all RAIDZ levels, - new scalar raidz implementation (unrolled), - two x86_64 SIMD implementations (SSE and AVX2 instructions sets), - fastest routines selected on module load (benchmark). - cmd/raidz_test - verify and benchmark all implementations - added raidz_test to the ZFS Test Suite New zfs module parameters: - zfs_vdev_raidz_impl (str): selects the implementation to use. On module load, the parameter will only accept first 3 options, and the other implementations can be set once module is finished loading. Possible values for this option are: "fastest" - use the fastest math available "original" - use the original raidz code "scalar" - new scalar impl "sse" - new SSE impl if available "avx2" - new AVX2 impl if available See contents of `/sys/module/zfs/parameters/zfs_vdev_raidz_impl` to get the list of supported values. If an implementation is not supported on the system, it will not be shown. Currently selected option is enclosed in `[]`. Signed-off-by: Gvozden Neskovic <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #4328
* Linux 4.6 compat: Fall back to d_prune_aliases() if necessaryTim Chase2016-06-171-2/+15
| | | | | | | | | | | | | | | As of 4.6, the icache and dcache LRUs are memcg aware insofar as the kernel's per-superblock shrinker is concerned. The effect is that dcache or icache entries added by a task in a non-root memcg won't be scanned by the shrinker in the context of the root (or NULL) memcg. This defeats the attempts by zfs_sb_prune() to unpin buffers and can allow metadata to grow uncontrollably. This patch reverts to the d_prune_aliaes() method in case the kernel's per-superblock shrinker is not able to free anything. Signed-off-by: Tim Chase <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Signed-off-by: Chunwei Chen <[email protected]> Closes: #4726
* Remove libzfs_graph.cBrian Behlendorf2016-06-163-656/+0
| | | | | | | | The libzfs_graph.c source file should have been removed in 330d06f, it is entirely unused. Signed-off-by: Brian Behlendorf <[email protected]> Closes #4766
* Add `zfs allow` and `zfs unallow` supportBrian Behlendorf2016-06-0778-242/+759
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ZFS allows for specific permissions to be delegated to normal users with the `zfs allow` and `zfs unallow` commands. In addition, non- privileged users should be able to run all of the following commands: * zpool [list | iostat | status | get] * zfs [list | get] Historically this functionality was not available on Linux. In order to add it the secpolicy_* functions needed to be implemented and mapped to the equivalent Linux capability. Only then could the permissions on the `/dev/zfs` be relaxed and the internal ZFS permission checks used. Even with this change some limitations remain. Under Linux only the root user is allowed to modify the namespace (unless it's a private namespace). This means the mount, mountpoint, canmount, unmount, and remount delegations cannot be supported with the existing code. It may be possible to add this functionality in the future. This functionality was validated with the cli_user and delegation test cases from the ZFS Test Suite. These tests exhaustively verify each of the supported permissions which can be delegated and ensures only an authorized user can perform it. Two minor bug fixes were required for test-running.py. First, the Timer() object cannot be safely created in a `try:` block when there is an unconditional `finally` block which references it. Second, when running as a normal user also check for scripts using the both the .ksh and .sh suffixes. Finally, existing users who are simulating delegations by setting group permissions on the /dev/zfs device should revert that customization when updating to a version with this change. Signed-off-by: Brian Behlendorf <[email protected]> Signed-off-by: Tony Hutter <[email protected]> Closes #362 Closes #434 Closes #4100 Closes #4394 Closes #4410 Closes #4487
* Fix minor spelling mistakesColin Ian King2016-06-063-4/+4
| | | | | | | | | | | Trivial spelling mistake fix in error message text. * Fix spelling mistake "adminstrator" -> "administrator" * Fix spelling mistake "specificed" -> "specified" * Fix spelling mistake "interperted" -> "interpreted" Signed-off-by: Colin Ian King <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #4728
* Fix cstyle.pl warningsBrian Behlendorf2016-06-031-4/+16
| | | | | | | | | | | | | | | | As of perl v5.22.1 the following warnings are generated: * Redundant argument in printf at scripts/cstyle.pl line 194 * Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\S{ <-- HERE / at scripts/cstyle.pl line 608. They have been addressed by escaping the left braces and by providing the correct number of arguments to printf based on the fmt specifier set by the verbose option. Signed-off-by: Brian Behlendorf <[email protected]> Closes #4723
* Implementation of AVX2 optimized Fletcher-4Jinshan Xiong2016-06-0212-69/+588
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | New functionality: - Preserves existing scalar implementation. - Adds AVX2 optimized Fletcher-4 computation. - Fastest routines selected on module load (benchmark). - Test case for Fletcher-4 added to ztest. New zcommon module parameters: - zfs_fletcher_4_impl (str): selects the implementation to use. "fastest" - use the fastest version available "cycle" - cycle trough all available impl for ztest "scalar" - use the original version "avx2" - new AVX2 implementation if available Performance comparison (Intel i7 CPU, 1MB data buffers): - Scalar: 4216 MB/s - AVX2: 14499 MB/s See contents of `/sys/module/zcommon/parameters/zfs_fletcher_4_impl` to get list of supported values. If an implementation is not supported on the system, it will not be shown. Currently selected option is enclosed in `[]`. Signed-off-by: Jinshan Xiong <[email protected]> Signed-off-by: Andreas Dilger <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #4330
* Linux 4.7 compat: handler->set() takes both dentry and inodeBrian Behlendorf2016-06-012-30/+69
| | | | | | | | | Counterpart to fd4c7b7, the same approach was taken to resolve the compatibility issue. Signed-off-by: Brian Behlendorf <[email protected]> Signed-off-by: Chunwei Chen <[email protected]> Closes #4717 Issue #4665
* Fix memleak in vdev_config_generate_statsChunwei Chen2016-05-311-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | fnvlist_add_nvlist will copy the contents of nvx, so we need to free it here. unreferenced object 0xffff8800a6934e80 (size 64): comm "zpool", pid 3398, jiffies 4295007406 (age 214.180s) hex dump (first 32 bytes): 60 06 c2 73 00 88 ff ff 00 7c 8c 73 00 88 ff ff `..s.....|.s.... 00 00 00 00 00 00 00 00 40 b0 70 c0 ff ff ff ff [email protected]..... backtrace: [<ffffffff81810c4e>] kmemleak_alloc+0x4e/0xb0 [<ffffffff811fac7d>] __kmalloc_node+0x17d/0x310 [<ffffffffc065528c>] spl_kmem_alloc_impl+0xac/0x180 [spl] [<ffffffffc0657379>] spl_vmem_alloc+0x19/0x20 [spl] [<ffffffffc07056cf>] nv_alloc_sleep_spl+0x1f/0x30 [znvpair] [<ffffffffc07006b7>] nvlist_xalloc.part.13+0x27/0xc0 [znvpair] [<ffffffffc07007ad>] nvlist_alloc+0x3d/0x40 [znvpair] [<ffffffffc0703abc>] fnvlist_alloc+0x2c/0x80 [znvpair] [<ffffffffc07b1783>] vdev_config_generate_stats+0x83/0x370 [zfs] [<ffffffffc07b1f53>] vdev_config_generate+0x4e3/0x650 [zfs] [<ffffffffc07996db>] spa_config_generate+0x20b/0x4b0 [zfs] [<ffffffffc0794f64>] spa_tryimport+0xc4/0x430 [zfs] [<ffffffffc07d11d8>] zfs_ioc_pool_tryimport+0x68/0x110 [zfs] [<ffffffffc07d4fc6>] zfsdev_ioctl+0x646/0x7a0 [zfs] [<ffffffff81232e31>] do_vfs_ioctl+0xa1/0x5b0 [<ffffffff812333b9>] SyS_ioctl+0x79/0x90 Signed-off-by: Chunwei Chen <[email protected]> Signed-off-by: Tony Hutter <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #4707 Issue #4708
* Fix memleak in zpl_parse_optionsChunwei Chen2016-05-311-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | strsep() will advance tmp_mntopts, and will change it to NULL on last iteration. This will cause strfree(tmp_mntopts) to not free anything. unreferenced object 0xffff8800883976c0 (size 64): comm "mount.zfs", pid 3361, jiffies 4294931877 (age 1482.408s) hex dump (first 32 bytes): 72 77 00 73 74 72 69 63 74 61 74 69 6d 65 00 7a rw.strictatime.z 66 73 75 74 69 6c 00 6d 6e 74 70 6f 69 6e 74 3d fsutil.mntpoint= backtrace: [<ffffffff81810c4e>] kmemleak_alloc+0x4e/0xb0 [<ffffffff811f9cac>] __kmalloc+0x16c/0x250 [<ffffffffc065ce9b>] strdup+0x3b/0x60 [spl] [<ffffffffc080fad6>] zpl_parse_options+0x56/0x300 [zfs] [<ffffffffc080fe46>] zpl_mount+0x36/0x80 [zfs] [<ffffffff81222dc8>] mount_fs+0x38/0x160 [<ffffffff81240097>] vfs_kern_mount+0x67/0x110 [<ffffffff812428e0>] do_mount+0x250/0xe20 [<ffffffff812437d5>] SyS_mount+0x95/0xe0 [<ffffffff8181aff6>] entry_SYSCALL_64_fastpath+0x1e/0xa8 [<ffffffffffffffff>] 0xffffffffffffffff Signed-off-by: Chunwei Chen <[email protected]> Signed-off-by: Tony Hutter <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #4706 Issue #4708
* Fix out-of-bound access in zfs_fillpageChunwei Chen2016-05-311-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The original code will do an out-of-bound access on pl[] during last iteration. ================================================================== BUG: KASAN: stack-out-of-bounds in zfs_getpage+0x14c/0x2d0 [zfs] Read of size 8 by task tmpfile/7850 page:ffffea00017c6dc0 count:0 mapcount:0 mapping: (null) index:0x0 flags: 0xffff8000000000() page dumped because: kasan: bad access detected CPU: 3 PID: 7850 Comm: tmpfile Tainted: G OE 4.6.0+ #3 ffff88005f1b7678 0000000006dbe035 ffff88005f1b7508 ffffffff81635618 ffff88005f1b7678 ffff88005f1b75a0 ffff88005f1b7590 ffffffff81313ee8 ffffea0001ae8dd0 ffff88005f1b7670 0000000000000246 0000000041b58ab3 Call Trace: [<ffffffff81635618>] dump_stack+0x63/0x8b [<ffffffff81313ee8>] kasan_report_error+0x528/0x560 [<ffffffff81278f20>] ? filemap_map_pages+0x5f0/0x5f0 [<ffffffff813144b8>] kasan_report+0x58/0x60 [<ffffffffc12250dc>] ? zfs_getpage+0x14c/0x2d0 [zfs] [<ffffffff81312e4e>] __asan_load8+0x5e/0x70 [<ffffffffc12250dc>] zfs_getpage+0x14c/0x2d0 [zfs] [<ffffffffc1252131>] zpl_readpage+0xd1/0x180 [zfs] [<ffffffff81353c3a>] SyS_execve+0x3a/0x50 [<ffffffff810058ef>] do_syscall_64+0xef/0x180 [<ffffffff81d0ee25>] entry_SYSCALL64_slow_path+0x25/0x25 Memory state around the buggy address: ffff88005f1b7500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88005f1b7580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88005f1b7600: 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 f4 ^ ffff88005f1b7680: f4 f4 f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 ffff88005f1b7700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ================================================================== Signed-off-by: Chunwei Chen <[email protected]> Signed-off-by: Tony Hutter <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #4705 Issue #4708
* Add isa_defs for MIPSYunQiang Su2016-05-312-2/+24
| | | | | | | | | GCC for MIPS only defines _LP64 when 64bit, while no _ILP32 defined when 32bit. Signed-off-by: YunQiang Su <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #4712
* Fix self-healing IO prior to dsl_pool_init() completionGeLiXin2016-05-272-6/+23
| | | | | | | | | | | | | | | | | | | | | Async writes triggered by a self-healing IO may be issued before the pool finishes the process of initialization. This results in a NULL dereference of `spa->spa_dsl_pool` in vdev_queue_max_async_writes(). George Wilson recommended addressing this issue by initializing the passed `dsl_pool_t **` prior to dmu_objset_open_impl(). Since the caller is passing the `spa->spa_dsl_pool` this has the effect of ensuring it's initialized. However, since this depends on the caller knowing they must pass the `spa->spa_dsl_pool` an additional NULL check was added to vdev_queue_max_async_writes(). This guards against any future restructuring of the code which might result in dsl_pool_init() being called differently. Signed-off-by: GeLiXin <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #4652
* Systemd configuration fixesBrian Behlendorf2016-05-278-11/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Disable zfs-import-scan.service by default. This ensures that pools will not be automatically imported unless they appear in the cache file. When this service is explicitly enabled pools will be imported with the "cachefile=none" property set. This prevents the creation of, or update to, an existing cache file. $ systemctl list-unit-files | grep zfs zfs-import-cache.service enabled zfs-import-scan.service disabled zfs-mount.service enabled zfs-share.service enabled zfs-zed.service enabled zfs.target enabled * Change services to dynamic from static by adding an [Install] section and adding 'WantedBy' tags in favor of 'Requires' tags. This allows for easier customization of the boot behavior. * Start the zfs-import-cache.service after the root pivot so the cache file is available in the standard location. * Start the zfs-mount.service after the systemd-remount-fs.service to ensure the root fs is writeable and the ZFS filesystems can create their mount points. * Change the default behavior to only load the ZFS kernel modules in zfs-import-*.service or when blkid(8) detects a pool. Users who wish to unconditionally load the kernel modules must uncomment the list of modules in /lib/modules-load.d/zfs.conf. Reviewed-by: Richard Laager <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #4325 Closes #4496 Closes #4658 Closes #4699
* OpenZFS 6531 - Provide mechanism to artificially limit disk performanceTony Hutter2016-05-2618-120/+680
| | | | | | | | | | | | | | | | | | | Reviewed by: Paul Dagnelie <[email protected]> Reviewed by: Matthew Ahrens <[email protected]> Reviewed by: George Wilson <[email protected]> Approved by: Dan McDonald <[email protected]> Ported by: Tony Hutter <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> OpenZFS-issue: https://www.illumos.org/issues/6531 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/97e8130 Porting notes: - Added new IO delay tracepoints, and moved common ZIO tracepoint macros to a new trace_common.h file. - Used zio_delay_taskq() in place of OpenZFS's timeout_generic() function. - Updated zinject man page - Updated zpool_scrub test files
* Add request size histograms (-r) to zpool iostat, minor man page fixTony Hutter2016-05-257-106/+301
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add -r option to "zpool iostat" to print request size histograms for the leaf ZIOs. This includes histograms of individual ZIOs ("ind") and aggregate ZIOs ("agg"). These stats can be useful for seeing how well the ZFS IO aggregator is working. $ zpool iostat -r mypool sync_read sync_write async_read async_write scrub req_size ind agg ind agg ind agg ind agg ind agg ---------- ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- 512 0 0 0 0 0 0 530 0 0 0 1K 0 0 260 0 0 0 116 246 0 0 2K 0 0 0 0 0 0 0 431 0 0 4K 0 0 0 0 0 0 3 107 0 0 8K 15 0 35 0 0 0 0 6 0 0 16K 0 0 0 0 0 0 0 39 0 0 32K 0 0 0 0 0 0 0 0 0 0 64K 20 0 40 0 0 0 0 0 0 0 128K 0 0 20 0 0 0 0 0 0 0 256K 0 0 0 0 0 0 0 0 0 0 512K 0 0 0 0 0 0 0 0 0 0 1M 0 0 0 0 0 0 0 0 0 0 2M 0 0 0 0 0 0 0 0 0 0 4M 0 0 0 0 0 0 155 19 0 0 8M 0 0 0 0 0 0 0 811 0 0 16M 0 0 0 0 0 0 0 68 0 0 -------------------------------------------------------------------------------- Also rename the stray "-G" in the man page to be "-w" for latency histograms. Signed-off-by: Tony Hutter <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Signed-off-by: Tim Chase <[email protected]> Closes #4659
* Fix arc_prune_task use-after-freeChunwei Chen2016-05-251-10/+11
| | | | | | | | | | | | arc_prune_task uses a refcount to protect arc_prune_t, but it doesn't prevent the underlying zsb from disappearing if there's a concurrent umount. We fix this by force the caller of arc_remove_prune_callback to wait for arc_prune_taskq to finish. Signed-off-by: Chunwei Chen <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #4687 Closes #4690
* Improve zfs-module-parameters(5)DHE2016-05-233-55/+97
| | | | | | | | | | | Various rewrites to the descriptions of module parameters. Corrects spelling mistakes, makes descriptions them more user-friendly and describes some ZFS quirks which should be understood before changing parameter values. Signed-off-by: DHE <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #4671
* Skip ctldir znode in zfs_rezget to fix snapdir issuesChunwei Chen2016-05-231-0/+10
| | | | | | | | | | | | | Skip ctldir in zfs_rezget, otherwise they will always get invalidated. This will cause funny behaviour for the mounted snapdirs. Especially for Linux >= 3.18, d_invalidate will detach the mountpoint and prevent anyone automount it again as long as someone is still using the detached mount. Signed-off-by: Chunwei Chen <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #4514 Closes #4661 Closes #4672
* Add missing RPM BuildRequiresBrian Behlendorf2016-05-231-0/+2
| | | | | | | | | Both libudev and libattr are recommended build requirements. As such their development headers should lists in the rpm spec file so those dependencies are pulled in when building rpm packages. Signed-off-by: Brian Behlendorf <[email protected]> Closes #4676
* Consistently use parsable instead of parseableChrister Ekholm2016-05-234-7/+7
| | | | | | | | | This is a purely cosmetical change, to consistently prefer one of two (both acceptable) choises for the word parsable in documentation and code. I don't really care which to use, but acording to wiktionary https://en.wiktionary.org/wiki/parsable#English parsable is preferred. Signed-off-by: Brian Behlendorf <[email protected]> Closes #4682
* Linux 4.7 compat: use iterate_shared for concurrent readdirChunwei Chen2016-05-204-25/+54
| | | | | | | | | | | | | Register iterate_shared if it exists so the kernel will used shared lock and allowing concurrent readdir. Also, use shared lock when doing llseek with SEEK_DATA or SEEK_HOLE to allow concurrent seeking. Signed-off-by: Chunwei Chen <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #4664 Closes #4665
* Fix config for posix_acl_release() GPL testChunwei Chen2016-05-201-16/+17
| | | | | | | | | The GPL test for posix_acl_release() didn't include <linux/module.h>. Also run this test only when posix_acl_release() exists. Signed-off-by: Chunwei Chen <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #4665
* Linux 4.7 compat: replace blk_queue_flush with blk_queue_write_cacheChunwei Chen2016-05-203-9/+77
| | | | | | Signed-off-by: Chunwei Chen <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #4665
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