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* Update zdb.8's fsck referenceRichard Laager2019-04-161-4/+2
| | | | | | | | | | On Linux, this is in man section 8, not 1M. Also, there is no fsdb on Linux, so I removed that. Reviewed-by: George Melikov <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Richard Laager <[email protected]> Closes #8626
* Refer to commands consistently in zpool-features.5Richard Laager2019-04-161-19/+19
| | | | | | | | | | | | This had a mix of command vs subcommand, quoted vs not quoted, and bolded vs. not bolded command names. Also, fix man page sections from 1M (Solaris) to 8 (Linux). Reviewed-by: George Melikov <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Richard Laager <[email protected]> Closes #8626
* Eliminate most mentions of "special"Richard Laager2019-04-162-13/+13
| | | | | | | | | | | | | | Previously, the "spare" vdev type was described as "A special pseudo-vdev which...". I wanted to eliminate the word "special" from that, now that the allocation_classes feature exists and there is such a thing as a "special vdev". I ended up eliminating almost all instances of the word "special" that are not referencing the allocation_classes feature. Reviewed-by: George Melikov <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Richard Laager <[email protected]> Closes #8626
* Fix issues with truncated files in raw sendsTom Caputi2019-04-157-48/+271
| | | | | | | | | | | | | | | | | | | | When receiving a raw send stream only reallocated objects whose contents were not freed by the standard indicators should call dmu_free_long_range(). Furthermore, if calling dmu_free_long_range() is required then the objects current block size must be used and not the new block size. Two additional test cases were added to provided realistic test coverage for processing reallocated objects which are part of a raw receive. Reviewed-by: Olaf Faaland <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Signed-off-by: Tom Caputi <[email protected]> Closes #8528 Closes #8607
* Fix hierarchy misspellingsRichard Laager2019-04-145-10/+10
| | | | | | | | Reviewed-by: George Melikov <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reported-by: Matthew Ahrens <[email protected]> Signed-off-by: Richard Laager <[email protected]> Closes #8563 Closes #8622
* Don't hard-code number of ioctls for portabilityTomohiro Kusumi2019-04-141-1/+1
| | | | | | | | | | | | | | | Use (ZFS_IOC_LAST - ZFS_IOC_FIRST) instead of 256. It seems 256 is just a number large enough to hold ioctls at the moment. Using 256 also causes compile-time warning or error on platfoms whose enum zfs_ioc definition differs. Reviewed-by: Olaf Faaland <[email protected]> Reviewed by: Brian Behlendorf <[email protected]> Reviewed-by: Igor Kozhukhov <[email protected]> Signed-off-by: Tomohiro Kusumi <[email protected]> Closes #8598
* Sync reserved Illumos ioctl comment with actual numberTomohiro Kusumi2019-04-141-1/+1
| | | | | | | | | | It's 81 now. Reviewed-by: Olaf Faaland <[email protected]> Reviewed by: Brian Behlendorf <[email protected]> Reviewed-by: Igor Kozhukhov <[email protected]> Signed-off-by: Tomohiro Kusumi <[email protected]> Closes #8598
* compile with -fno-omit-frame-pointerRichard Elling2019-04-143-0/+23
| | | | | | | | | | | | | | By default, depending on the version, gcc can reuse the frame pointer register. This is a micro-optimization that might help on some very old x86 processors. However, it also makes dynamic tracing less useful because the stacks cannot be easily observed. This rule change instructs gcc to use the -fno-omit-frame-pointer option when compiling. Reviewed-by: Olaf Faaland <[email protected]> Reviewed by: Brian Behlendorf <[email protected]> Signed-off-by: Richard Elling <[email protected]> Closes #8617
* Cleanup nits from ab7615d92Tom Caputi2019-04-142-3/+1
| | | | | | | | | This patch simply up cleans up a nit and corrects an error message issue that were introduced in the Multiple DVA scrub patch. Reviewed-by: George Melikov <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Tom Caputi <[email protected]> Closes #8619
* Fix issue in receive_object() during reallocationBrian Behlendorf2019-04-127-18/+218
| | | | | | | | | | | | | | | When receiving an object to a previously allocated interior slot the new object should be "allocated" by setting DMU_NEW_OBJECT, not "reallocated" with dnode_reallocate(). For resilience verify the slot is free as required in case the stream is malformed. Add a test case to generate more realistic incremental send streams that force reallocation to occur during the receive. Reviewed-by: Olaf Faaland <[email protected]> Reviewed-by: Tom Caputi <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #8067 Closes #8614
* Fix TXG_MASK cstyleBrian Behlendorf2019-04-124-16/+18
| | | | | | | | | | Fix style issue for 'tx->tx_txg&TXG_MASK'. There should be white space around the '&' character. Split the dnode_reallocate() ASSERT to make it more readable to clearly separate the checks. Reviewed-by: George Melikov <[email protected]> Reviewed-by: Tom Caputi <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #8606
* ZTS: Make fault cleanup function more robustJohn Wren Kennedy2019-04-121-0/+10
| | | | | | | | | | | The cleanup function of auto_online_001_pos does not account for the possibility that the test may fail while a disk is still removed. If the test run is using real disks, cleanup should involve restoring any that are missing. Reviewed-by: Giuseppe Di Natale <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: John Kennedy <[email protected]> Closes #8579
* Allow zfs-tests to recover from hibernationAlek P2019-04-111-19/+70
| | | | | | | | | | | | | | | | When a system sleeps during a zfs-test, the time spent hibernating is counted against the test's runtime even though the test can't and isn't running. This patch tries to detect timeouts due to hibernation and reruns tests that timed out due to system sleeping. In this version of the patch, the existing behavior of returning non-zero when a test was killed is preserved. With this patch applied we still return nonzero and we also automatically rerun the test we suspect of being killed due to system hibernation. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed by: John Kennedy <[email protected]> Signed-off-by: Alek Pinchuk <[email protected]> Closes #8575
* Always call rw_init in zio_crypt_key_unwrapJorgen Lundman2019-04-101-1/+2
| | | | | | | | | | | | The error path in zio_crypt_key_unwrap would call zio_crypt_key_destroy which calls rw_destroy(&key->zk_salt_lock); which has not yet been initialized. We move the rw_init() call to the start of zio_crypt_key_unwrap instead. Reviewed-by: Tom Caputi <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Jorgen Lundman <[email protected]> Closes #8604 Closes #8605
* Avoid stack overwrite in zfs_setattr_dir()Tim Chase2019-04-101-1/+2
| | | | | | | | | | | | The bulk[] array index, count, must be reset per-iteration in order to not overwrite the stack. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Chris Dunlop <[email protected]> Reviewed-by: Tom Caputi <[email protected]> Signed-off-by: Tim Chase <[email protected]> Closes #8072 Closes #8597 Closes #8601
* Don't assume pthread_t is uint_t for portabilityTomohiro Kusumi2019-04-091-1/+2
| | | | | | | | | | | | | | POSIX doesn't define pthread_t as uint_t. It could be a pointer. This code causes below compile error on a platform using pointer for pthread_t. -- kernel.c:815:25: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast] (void) printf("%u ", (uint_t)pthread_self()); Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Igor Kozhukhov <[email protected]> Signed-off-by: Tomohiro Kusumi <[email protected]> Closes #8558
* Unbreak build on Linux kernel < 3.10Tomohiro Kusumi2019-04-082-4/+4
| | | | | | | | | | | | | | | | | | | d12614521a("Fixes for procfs files backed by linked lists") uses PDE_DATA(), but since PDE_DATA() (public interface which replaced old public interface PDE()) first appeared in upstream kernel 3.10, it lacks visible local definition for kernel < 3.10. Move the local PDE_DATA() definition to a ZoL header, to unbreak build on kernel < 3.10. -- module/spl/spl-procfs-list.c: In function 'procfs_list_open': module/spl/spl-procfs-list.c:166: error: implicit declaration of function 'PDE_DATA' module/spl/spl-procfs-list.c:166: warning: assignment makes pointer from integer without a cast Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: John Gallagher <[email protected]> Signed-off-by: Tomohiro Kusumi <[email protected]> Closes #8599
* Fix 'zfs list -t snapshot' depthBrian Behlendorf2019-04-081-2/+2
| | | | | | | | | | | | | | Commit df583073 introduced the ability to list the snapshots for a specified dataset. This change inadvertently resulted in only the top- level snapshots being listed when no dataset was specified. Fix this issue by adding an additional check to determine if a dataset was provided to avoid incorrectly restricting the depth. Reviewed-by: George Melikov <[email protected]> Reviewed-by: Tom Caputi <[email protected]> Reviewed-by: Alek Pinchuk <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #8591 Closes #8594
* Fix buffer length in strlcpy()Brian Behlendorf2019-04-081-1/+1
| | | | | | | | | | | | The length used for the strlcpy() used the size of zv_value when it should have used the size of zc_name. Correct this typo. Reviewed-by: George Melikov <[email protected]> Reviewed-by: Jorgen Lundman <[email protected]> Reviewed-by: Igor Kozhukhov <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #8595 Closes #8596
* Revert "Fix issues with truncated files in raw sends"Brian Behlendorf2019-04-057-142/+46
| | | | | | | | | | | | | | | | | This partially reverts commit 5dbf8b4ed. This change resolved the issues observed with truncated files in raw sends. However, the required changes to dnode_allocate() introduced a regression for non-raw streams which needs to be understood. The additional debugging improvements from the original patch were not reverted. Reviewed-by: Tom Caputi <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #7378 Issue #8528 Issue #8540 Issue #8565 Close #8584
* predictive prefetch disabled on new pools until export/rebootMatthew Ahrens2019-04-051-1/+2
| | | | | | | | | | | | | | | | | | | | | | When a pool is initially created (by `zpool create`), predictive prefetch is inadvertently disabled, until the pool is export/import-ed, or the machine is rebooted. When device removal was introduced, we added some code to disable predictive prefetching until indirect vdevs have been loaded. This resulted in the "default state" of prefetch being disabled, until we proactively enable it after indirect vdevs are loaded. Unfortunately this resulted in a few bugs where in some code paths we neglect to enable predictive prefetch. The first of these was fixed by https://github.com/zfsonlinux/zfs/commit/20507534d4ede14d4dd82c99fc8d461704ce7419 This commit fixes another case where we also need to explicitly enable predictive prefetch, when the pool is initially created. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Richard Elling <[email protected]> Reviewed-by: George Melikov <[email protected]> Signed-off-by: Matthew Ahrens <[email protected]> Closes #8577
* features.kernel layout should match features.poolDon Brady2019-04-042-23/+51
| | | | | | | | The features.kernel layout should match features.pool. Reviewed-by: Sara Hartse <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Don Brady <[email protected]> Closes #8566
* Restrict kstats and print real pointersSara Hartse2019-04-0418-17/+33
| | | | | | | | | | | | | | | There are several places where we use zfs_dbgmsg and %p to print pointers. In the Linux kernel, these values obfuscated to prevent information leaks which means the pointers aren't very useful for debugging crash dumps. We decided to restrict the permissions of dbgmsg (and some other kstats while we were at it) and print pointers with %px in zfs_dbgmsg as well as spl_dumpstack Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: John Gallagher <[email protected]> Signed-off-by: sara hartse <[email protected]> Closes #8467 Closes #8476
* Hint about zpool free vs zfs availableJosh Soref2019-04-041-1/+25
| | | | | | | | | Also describe free/allocated/fragmentation Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Matt Ahrens <[email protected]> Signed-off-by: Josh Soref <[email protected]> Closes #7565 Closes #8483
* Fix txg_wait_open() load average inflationBrian Behlendorf2019-04-042-5/+25
| | | | | | | | | | | | | | | | | Callers of txg_wait_open() which set should_quiesce=B_TRUE should be accounted for as iowait time. Otherwise, the caller is understood to be idle and cv_wait_sig() is used to prevent incorrectly inflating the system load average. Similarly txg_wait_wait() has been updated to use cv_wait_io() to be accounted against iowait. Reviewed-by: Tim Chase <[email protected]> Reviewed-by: Olaf Faaland <[email protected]> Reviewed-by: Matt Ahrens <[email protected]> Reviewed-by: George Melikov <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #8550 Closes #8558
* Move dracut specifics to dracut moduleMichael Niewöhner2019-04-026-5/+25
| | | | | | | | | | | | Dracut depends on the environment variable BOOTFS to be set after pool import. This dracut specific systemd ExecStartPost command should not be called for any non-dracut systems, so let's move it to a static systemd unit that. Reviewed-by: Manuel Amador (Rudd-O) <[email protected]> Reviewed-by: Matthew Thode <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Michael Niewöhner <[email protected]> Closes #8510
* Fix man(1) warningsJosh Soref2019-04-021-3/+3
| | | | | | | | | | | The macOS man app strenuously objects to blank lines in man files. mdoc warning: Empty input line #xyz Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: bunder2015 <[email protected]> Reviewed-by: George Melikov <[email protected]> Signed-off-by: Josh Soref <[email protected]> Closes #8559
* Append snapshot name to "TIME SENT SNAPSHOT" outputTerraTech2019-04-011-1/+2
| | | | | | | | | Simply appends zhp->zfs_name to the "TIME SENT SNAPSHOT" output. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Matt Ahrens <[email protected]> Reviewed-by: Richard Elling <[email protected]> Signed-off-by: TerraTech <[email protected]> Closes #8543
* Do not iterate through filesystems unnecessarilyTom Caputi2019-04-014-6/+45
| | | | | | | | | | | | | | | | | | | | | | | | Currently, when attempting to list snapshots ZFS may do a lot of extra work checking child datasets. This is because the code does not realize that it will not be able to reach any snapshots contained within snapshots that are at the depth limit since the snapshots of those datasets are counted as an additional layer deeper. This patch corrects this issue. In addition, this patch adds the ability to do perform the commands: $ zfs list -t snapshot <dataset> $ zfs get -t snapshot <prop> <dataset> as a convenient way to list out properties of all snapshots of a given dataset without having to use the depth limit. Reviewed-by: Alek Pinchuk <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Richard Laager <[email protected]> Reviewed-by: Matt Ahrens <[email protected]> Reviewed-by: George Melikov <[email protected]> Signed-off-by: Tom Caputi <[email protected]> Closes #8539
* Fix systemd-import servicesMichael Niewöhner2019-03-292-2/+2
| | | | | | | | | | | | | | | | On debian, systemd complains about missing /bin/awk because it actually is located at /usr/bin/awk. It is not a good idea to hardcode binary paths because different linux distros use different paths. According to systemd's man page it is absolutely safe to miss paths for binaries located at standard locations (/bin, /sbin, /usr/bin, ...). Further, replace this more or less complicated awk command by grep. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Michael Niewöhner <[email protected]> Issue #8510
* Remove hard dependency on bashMichael Niewöhner2019-03-292-2/+2
| | | | | | | | | | zfs-import-* services have a hard dependency on bash while not everyone has bash installed. At this point /bin/sh is sufficient, so use that. Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Michael Niewöhner <[email protected]> Issue #8510
* Update raw send documentationTom Caputi2019-03-291-4/+14
| | | | | | | | | | This patch simply clarifies some of the limitations related to raw sends in the man page. No functional changes. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Jason Cohen <[email protected]> Signed-off-by: Tom Caputi <[email protected]> Closes #8503 Closes #8544
* Add TRIM supportBrian Behlendorf2019-03-2991-430/+5584
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | UNMAP/TRIM support is a frequently-requested feature to help prevent performance from degrading on SSDs and on various other SAN-like storage back-ends. By issuing UNMAP/TRIM commands for sectors which are no longer allocated the underlying device can often more efficiently manage itself. This TRIM implementation is modeled on the `zpool initialize` feature which writes a pattern to all unallocated space in the pool. The new `zpool trim` command uses the same vdev_xlate() code to calculate what sectors are unallocated, the same per- vdev TRIM thread model and locking, and the same basic CLI for a consistent user experience. The core difference is that instead of writing a pattern it will issue UNMAP/TRIM commands for those extents. The zio pipeline was updated to accommodate this by adding a new ZIO_TYPE_TRIM type and associated spa taskq. This new type makes is straight forward to add the platform specific TRIM/UNMAP calls to vdev_disk.c and vdev_file.c. These new ZIO_TYPE_TRIM zios are handled largely the same way as ZIO_TYPE_READs or ZIO_TYPE_WRITEs. This makes it possible to largely avoid changing the pipieline, one exception is that TRIM zio's may exceed the 16M block size limit since they contain no data. In addition to the manual `zpool trim` command, a background automatic TRIM was added and is controlled by the 'autotrim' property. It relies on the exact same infrastructure as the manual TRIM. However, instead of relying on the extents in a metaslab's ms_allocatable range tree, a ms_trim tree is kept per metaslab. When 'autotrim=on', ranges added back to the ms_allocatable tree are also added to the ms_free tree. The ms_free tree is then periodically consumed by an autotrim thread which systematically walks a top level vdev's metaslabs. Since the automatic TRIM will skip ranges it considers too small there is value in occasionally running a full `zpool trim`. This may occur when the freed blocks are small and not enough time was allowed to aggregate them. An automatic TRIM and a manual `zpool trim` may be run concurrently, in which case the automatic TRIM will yield to the manual TRIM. Reviewed-by: Jorgen Lundman <[email protected]> Reviewed-by: Tim Chase <[email protected]> Reviewed-by: Matt Ahrens <[email protected]> Reviewed-by: George Wilson <[email protected]> Reviewed-by: Serapheim Dimitropoulos <[email protected]> Contributions-by: Saso Kiselkov <[email protected]> Contributions-by: Tim Chase <[email protected]> Contributions-by: Chunwei Chen <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #8419 Closes #598
* Send stream should only list included snapsTom Caputi2019-03-281-24/+83
| | | | | | | | | | | | | | | | | Currently, zfs send streams will include a list of all snapshots on the source side if the '-p' option is provided. This can cause performance problems on the receive side, especially if those snapshots aren't present on the destination. These problems arise because guid_to_name(), which is used for several receive side functions, will search the entire receive-side pool if it can't find a snapshot with a matching guid. This patch corrects the issue by ensuring only streams that require this list of snapshots include them. Reviewed-by: Alek Pinchuk <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Matt Ahrens <[email protected]> Signed-off-by: Tom Caputi <[email protected]> Closes #8533
* Fix issues with truncated files in raw sendsTom Caputi2019-03-277-50/+157
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes a few issues with raw receives involving truncated files: * dnode_reallocate() now calls dnode_set_blksz() instead of dnode_setdblksz(). This ensures that any remaining dbufs with blkid 0 are resized along with their containing dnode upon reallocation. * One of the calls to dmu_free_long_range() in receive_object() needs to check that the object it is about to free some contents or hasn't been completely removed already by a previous call to dmu_free_long_object() in the same function. * The same call to dmu_free_long_range() in the previous point needs to ensure it uses the object's current block size and not the new block size. This ensures the blocks of the object that are supposed to be freed are completely removed and not simply partially zeroed out. This patch also adds handling for DRR_OBJECT_RANGE records to dprintf_drr() for debugging purposes. Reviewed-by: Matt Ahrens <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Tom Caputi <[email protected]> Closes #7378 Closes #8528
* Update valid vdev types for get_disklistRichard Elling2019-03-261-1/+1
| | | | | | | Reviewed-by: George Melikov <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed by: John Kennedy <[email protected]> Signed-off-by: Richard Elling <[email protected]> Closes #8532
* ZTS: Detect e2fsprogs verity issueBrian Behlendorf2019-03-262-0/+20
| | | | | | | | | | | | | | | | | | The projectid_001_pos and projecttree_001_pos test cases use the lsattr command to detect that the project quota bit is set correctly. Due to a bug in e2fsprogs-1.44.4 setting the Project 'P' bit also results in the Verity 'V' bit being reported as set. This will result in the test case failing. The issue has been resolved in e2fsprogs but in order to avoid testing failures these two test cases are skipped when e2fsprogs-1.44.4 is installed. https://github.com/tytso/e2fsprogs/commit/7e5a95e3d Reviewed-by: Richard Elling <[email protected]> Reviewed-by: George Melikov <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #8534
* Correct a very minor grammar issueEvan Allrich2019-03-261-2/+2
| | | | | | Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: George Melikov <[email protected]> Signed-off-by: Evan Allrich <[email protected]> Closes #8535
* git ignore python 3.7 virtual environment directoriesRichard Elling2019-03-251-0/+2
| | | | | | Reviewed-by: George Melikov <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Richard Elling <[email protected]> Closes #8525
* Fix vd_path and error in spa_vdev_remove()Igor K2019-03-221-5/+12
| | | | | | | | | | | Make a local copy of the vd_path and preserve the removal error for use in spa_history_log_internal(). This is required because after spa_vdev_exit() there is nothing preventing the vdev state from changing. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Tom Caputi <[email protected]> Signed-off-by: Igor Kozhukhov <[email protected]> Closes #8522
* Panic when running 'zpool split'Roman Strashkin2019-03-221-0/+12
| | | | | | | | | | | Added missing remove of detachable VDEV from txg's DTL list to avoid use-after-free for the split VDEV Reviewed by: Pavel Zakharov <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Jorgen Lundman <[email protected]> Signed-off-by: Roman Strashkin <[email protected]> Closes #5565 Closes #7856
* ZFS Reads may result in unneccesary calls to zil_commitGeorge Wilson2019-03-223-3/+9
| | | | | | | | | | | | | | | ZFS supports O_RSYNC for read operations and when specified will ensure the same level of data integrity that O_DSYNC and O_SYNC provides for writes. O_RSYNC by itself has no effect so it must be combined with either O_DSYNC or O_SYNC. However, many platforms don't support O_RSYNC and have mapped O_SYNC to mean O_RSYNC within ZFS. This is incorrect and causes unnecessary calls to zil_commit. Only platforms which support O_RSYNC should implement the zil_commit functionality in the read code path. Reviewed-by: Matt Ahrens <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: George Wilson <[email protected]> Closes #8523
* MMP interval and fail_intervals in uberblockOlaf Faaland2019-03-2117-175/+692
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When Multihost is enabled, and a pool is imported, uberblock writes include ub_mmp_delay to allow an importing node to calculate the duration of an activity test. This value, is not enough information. If zfs_multihost_fail_intervals > 0 on the node with the pool imported, the safe minimum duration of the activity test is well defined, but does not depend on ub_mmp_delay: zfs_multihost_fail_intervals * zfs_multihost_interval and if zfs_multihost_fail_intervals == 0 on that node, there is no such well defined safe duration, but the importing host cannot tell whether mmp_delay is high due to I/O delays, or due to a very large zfs_multihost_interval setting on the host which last imported the pool. As a result, it may use a far longer period for the activity test than is necessary. This patch renames ub_mmp_sequence to ub_mmp_config and uses it to record the zfs_multihost_interval and zfs_multihost_fail_intervals values, as well as the mmp sequence. This allows a shorter activity test duration to be calculated by the importing host in most situations. These values are also added to the multihost_history kstat records. It calculates the activity test duration differently depending on whether the new fields are present or not; for importing pools with only ub_mmp_delay, it uses (zfs_multihost_interval + ub_mmp_delay) * zfs_multihost_import_intervals Which results in an activity test duration less sensitive to the leaf count. In addition, it makes a few other improvements: * It updates the "sequence" part of ub_mmp_config when MMP writes in between syncs occur. This allows an importing host to detect MMP on the remote host sooner, when the pool is idle, as it is not limited to the granularity of ub_timestamp (1 second). * It issues writes immediately when zfs_multihost_interval is changed so remote hosts see the updated value as soon as possible. * It fixes a bug where setting zfs_multihost_fail_intervals = 1 results in immediate pool suspension. * Update tests to verify activity check duration is based on recorded tunable values, not tunable values on importing host. * Update tests to verify the expected number of uberblocks have valid MMP fields - fail_intervals, mmp_interval, mmp_seq (sequence number), that sequence number is incrementing, and that uberblock values match tunable settings. Reviewed-by: Andreas Dilger <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Tony Hutter <[email protected]> Signed-off-by: Olaf Faaland <[email protected]> Closes #7842
* Mutex leak in dsl_dataset_hold_obj()Jorgen Lundman2019-03-211-0/+4
| | | | | | | | | | | | | | In addition to dsl_dataset_evict_async() releasing a hold, there is an error case in dsl_dataset_hold_obj() which had missed 4 additional release calls. This was introduced in a1d477c24. openzfsonosx-commit: https://github.com/openzfsonosx/zfs/commit/63ff7f1c Authored by: Jorgen Lundman <[email protected]> Reviewed-by: Olaf Faaland <[email protected]> Reviewed by: Brian Behlendorf <[email protected]> Ported-by: Brian Behlendorf <[email protected]> Closes #8517
* QAT: Allocate digest_buffer using QAT_PHYS_CONTIG_ALLOC()cfzhu2019-03-211-1/+10
| | | | | | | | | | | | | If the buffer 'digest_buffer' is allocated in the qat_checksum() stack, it can't ensure that the address is physically contiguous, and the DMA result of the buffer may be handled incorrectly. Using QAT_PHYS_CONTIG_ALLOC() ensures a physically contiguous allocation. Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Tom Caputi <[email protected]> Signed-off-by: Chengfei, Zhu <[email protected]> Closes #8323 Closes #8521
* Report holes when there are only metadata changesBrian Behlendorf2019-03-211-3/+28
| | | | | | | | | | | | Update the dirty check in dmu_offset_next() such that dnode's are only considered dirty for the purpose or reporting holes when there are pending data blocks or frees to be synced. This ensures that when there are only metadata updates to be synced (atime) that holes are reported. Reviewed-by: Debabrata Banerjee <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #6958 Closes #8505
* Improve `zpool labelclear`Brian Behlendorf2019-03-2112-58/+246
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 1) As implemented the `zpool labelclear` command overwrites the calculated offsets of all four vdev labels even when only a single valid label is found. If the device as been re-purposed but still contains a valid label this can result in space no longer owned by ZFS being zeroed. Prevent this by verifying every label removed is intact before it's overwritten. 2) Address a small bug in zpool_do_labelclear() which prevented labelclear from working on file vdevs. Only block devices support BLKFLSBUF, try the ioctl() but when it's reported as unsupported this should not be fatal. 3) Fix `zpool labelclear` so it can be run on vdevs which were removed from the pool with `zpool remove`. Additionally, allow intact but partial labels to be cleared as in the case of a failed `zpool attach` or `zpool replace`. 4) Remove LABELCLEAR and LABELREAD variables for test cases. Reviewed-by: Matt Ahrens <[email protected]> Reviewed-by: Tim Chase <[email protected]> Reviewed-by: Tony Hutter <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #8500 Closes #8373 Closes #6261
* Add missing dmu_zfetch_fini() in dnode_move_impl()Julian Heuking2019-03-201-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | As it turns out, on the Windows platform when rw_init() is called (rather its bedrock call ExInitializeResourceLite) it is placed on an active-list of locks, and is removed at rw_destroy() time. dnode_move() has logic to copy over the old-dnode to new-dnode, including calling dmu_zfetch_init(new-dnode). But due to the missing dmu_zfetch_fini(old-dnode), kmem will call dnode_dest() to release the memory (and in debug builds fill pattern 0xdeadbeef) over the Windows active-lock's prev/next list pointers, making Windows sad. But on other platforms, the contents of dmu_zfetch_fini() is one call to list_destroy() and one to rw_destroy(), which is effectively a no-op call and is not required. This commit is mostly for "correctness" and can be skipped there. Porting Notes: * This leak exists on Linux but currently can never happen because the dnode_move() functionality is not supported. openzfsonosx-commit: openzfsonosx/zfs@d95fe517 Authored by: Julian Heuking <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Matt Ahrens <[email protected]> Signed-off-by: Jorgen Lundman <[email protected]> Closes #8519
* Add space in error messageTom Caputi2019-03-191-2/+2
| | | | | | | | | | | This patch simply adds a missing space in the ZFS_ERR_FROM_IVSET_GUID_MISSING error message. Reviewed-by: Richard Laager <[email protected]> Reviewed-by: George Melikov <[email protected]> Reviewed-by: Don Brady <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Tom Caputi <[email protected]> Closes #8514
* Fix l2arc_evict() destroy raceBrian Behlendorf2019-03-151-24/+30
| | | | | | | | | | | | | | | | | When destroying an arc_buf_hdr_t its identity cannot be discarded until it is entirely undiscoverable. This not only includes being unhashed, but also being removed from the l2arc header list. Discarding the header's identify prematurely renders the hash lock useless because it will always hash to bucket zero. This change resolves a race with l2arc_evict() by discarding the identity after it has been removed from the l2arc header list. This ensures either the header is not on the list or contains the correct identify. Reviewed-by: Tom Caputi <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #7688 Closes #8144
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