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* Don't perform ACL-to-mode translation on empty ACLTim Chase2014-10-211-1/+2
| | | | | | | | | | | | | | | | | | | | | | In zfs_acl_chown_setattr(), the zfs_mode_comput() function is used to create a traditional mode value based on an ACL. If no ACL exists, this processing shouldn't be done. Problems caused by this were most evident on version 4 filesystems which not only don't have system attributes, and also frequently have empty ACLs. On such filesystems, performing a chown() operation could have the effect of dirtying the mode bits in memory but not on the file system as follows: # create a file with typical mode of 664 echo test > test chown anyuser test ls -l test and the mode will show up as all zeroes. Unmounting/mounting and/or exporting/importing the filesystem will reveal the proper mode again. Signed-off-by: Tim Chase <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #1264
* Illumos 4924 - LZ4 Compression for metadataDaniil Lunev2014-10-205-92/+40
| | | | | | | | | | | | | | | | | | | | | Reviewed by Matthew Ahrens <[email protected]> Reviewed by Saso Kiselkov <[email protected]> Approved by: Christopher Siden <[email protected]> References: https://github.com/illumos/illumos-gate/commit/b8289d2 https://www.illumos.org/issues/3756 Porting notes: The static function zfs_prop_activate_feature() was removed because this change removes the only caller. The function was not removed from Illumos but instead left as dead code. However, to keep gcc happy it was removed from Linux and may be easily restored if needed. Ported by: DHE <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #1540
* Suppress AIO kmem warningsBrian Behlendorf2014-10-201-2/+2
| | | | | | | | | | | | The new zpl_aio_write() and zpl_aio_read() functions use kmem_alloc() to allocate enough memory to hold the vectorized IO. While this allocation will be small it's been observed in practice to sometimes slightly exceed the 8K warning threshold by a few kilobytes. Therefore, the KM_NODEBUG flag has been added to suppress warning. Signed-off-by: Brian Behlendorf <[email protected]> Signed-off-by: Richard Yao <[email protected]> Closes #2774
* Let `zpool import` ignore a missing hostid record.Darik Horn2014-10-171-31/+24
| | | | | | | | | | | | | Change the zpool program to skip its hostid mismatch check in the same way that libzfs already does. Invoked imports fail if the ZPOOL_CONFIG_HOSTID nvpair is missing in the /etc/zfs/zpool.cache file, which can happen as of the /etc/hostid deprecation in commit zfsonlinux/spl@acf0ade362cb8b26d67770114ee6fa17816e6b65. Signed-off-by: Darik Horn <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #2794
* Handle NULL mirror child vdevBrian Behlendorf2014-10-171-1/+1
| | | | | | | | | | | When selecting a mirror child it's possible that map allocated by vdev_mirror_map_allc() contains a NULL for the child vdev. In this case the child should be skipped and the read issues to another member of the mirror. Signed-off-by: Brian Behlendorf <[email protected]> Signed-off-by: Ned Bass <[email protected]> Closes #1744
* Update utsname supportBrian Behlendorf2014-10-177-29/+31
| | | | | | | | | | | | | | | | | | Modify the code to use the utsname() kernel function rather than a global variable. This results is cleaner more portable code because utsname() is already provided by the kernel and can be easily emulated in user space via uname(2). This means that it will behave consistently in both contexts. This is also has the benefit that it allows the removal of a few _KERNEL pre-processor conditions. And it also is a pre-requisite for a proper FUSE port because we need to provide a valid utsname. Finally, it allows us to remove this functionality from the SPL and all the related compatibility code. Signed-off-by: Brian Behlendorf <[email protected]> Issue #2757
* Remove shrink_dcache_memory() and shrink_icache_memory()Brian Behlendorf2014-10-171-19/+3
| | | | | | | | | | This functionality is optional and until Linux 3.0, which provided per-filesystem shinkers, they was never a reasonable interface. Therefore, this functionality is being dropped for earlier kernels. Signed-off-by: Brian Behlendorf <[email protected]> Issue #2757
* Update code to use misc_register()/misc_deregister()Brian Behlendorf2014-10-172-67/+28
| | | | | | | | | | | | | | | | | | | When ZPIOS was originally written it was designed to use the device_create() and device_destroy() functions. Unfortunately, these functions changed considerably over the years making them difficult to rely on. As it turns out a better choice would have been to use the misc_register()/misc_deregister() functions. This interface for registering character devices has remained stable, is simple, and provides everything we need. Therefore the code has been reworked to use this interface. The higher level ZFS code has always depended on these same interfaces so this is also as a step towards minimizing our kernel dependencies. Signed-off-by: Brian Behlendorf <[email protected]> Issue #2757
* Make license compatibility checks consistentBrian Behlendorf2014-10-176-13/+19
| | | | | | | | Apply the license specified in the META file to ensure the compatibility checks are all performed consistently. Signed-off-by: Brian Behlendorf <[email protected]> Issue #2757
* ztest: print backtrace on SIGSEGV and SIGABRTNed Bass2014-10-131-0/+44
| | | | | | | | Add signal handlers to print a backtrace if we crash or assert. Signed-off-by: Ned Bass <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #2788
* Fix source_tree variable in dkms buildBrian Behlendorf2014-10-131-1/+1
| | | | | | | | | The source_tree variable in the previous commit had an extra $. Remove it so that source_tree is expanded properly. An identical fix has been applied in the original patch to the stable branch. Signed-off-by: Brian Behlendorf <[email protected]> Closes #2776
* Point dkms build at installed source tree, rather than build directory.Tom Prince2014-10-091-1/+1
| | | | | | | Signed-off-by: Tom Prince <[email protected]> Signed-off-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #2776
* Install header during post-build rather than post-install.Tom Prince2014-10-093-2/+2
| | | | | | | | | | | | | | | | New versions of dkms clean up the build directory after installing. It appears that this was always intended, but had rm -rf "/path/to/build/*" (note the quotes), which prevented it from working. Also, the build step is already installing stuff into the directory where these files go, so installing our stuff there as part of build rather than install makes sense. Signed-off-by: Tom Prince <[email protected]> Signed-off-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #2776
* Add a stern warning about dedupTurbo Fredriksson2014-10-081-0/+12
| | | | | | | | | | | Users intending to use dedup should be clearly advised about its memory requirements and the risks involved. Thanx to Sachiru for comments and suggestions. Signed-off-by: Turbo Fredriksson <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #2754
* Improve VERIFY() error in dmu_write()Brian Behlendorf2014-10-081-1/+1
| | | | | | | | | This is a debug patch designed to ensure an error code is logged to the console when this VERIFY() is hit. Signed-off-by: Brian Behlendorf <[email protected]> Signed-off-by: Ned Bass <[email protected]> Issue #1440
* Fix CPU_SEQID use in preemptible contextBrian Behlendorf2014-10-071-1/+6
| | | | | | | | | | | | Commit e022864 introduced a regression for kernels which are built with CONFIG_DEBUG_PREEMPT. The use of CPU_SEQID in a preemptible context causes zio_nowait() to trigger the BUG. Since CPU_SEQID is simply being used as a random index the usage here is safe. To resolve the issue preempt is disable while calling CPU_SEQID. Signed-off-by: Brian Behlendorf <[email protected]> Signed-off-by: Ned Bass <[email protected]> Closes #2769
* Add an example for 'zfs bookmark' to the Example section.Turbo Fredriksson2014-10-071-0/+15
| | | | | | Signed-off-by: Turbo Fredriksson <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #2762
* Illumos 5176 - lock contention on godfather zioMatthew Ahrens2014-10-074-14/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | 5176 lock contention on godfather zio Reviewed by: Adam Leventhal <[email protected]> Reviewed by: Alex Reece <[email protected]> Reviewed by: Christopher Siden <[email protected]> Reviewed by: George Wilson <[email protected]> Reviewed by: Richard Elling <[email protected]> Reviewed by: Bayard Bell <[email protected]> Approved by: Garrett D'Amore <[email protected]> References: https://www.illumos.org/issues/5176 https://github.com/illumos/illumos-gate/commit/6f834bc Porting notes: Under Linux max_ncpus is defined as num_possible_cpus(). This is largest number of cpu ids which might be available during the life time of the system boot. This value can be larger than the number of present cpus if CONFIG_HOTPLUG_CPU is defined. Ported by: Turbo Fredriksson <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #2711
* Amend Dracut module to export ZFS root on shutdownLukas Wunner2014-10-076-0/+60
| | | | | | | | | | | | | | | | | | Make use of Dracut's ability to restore the initramfs on shutdown and pivot to it, allowing for a clean unmount and export of the ZFS root. No need to force-import on every reboot anymore. Signed-off-by: Lukas Wunner <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #2195 Issue #2476 Issue #2498 Issue #2556 Issue #2563 Issue #2575 Issue #2600 Issue #2755 Issue #2766
* Cleanup struct zed_conf vars in zed_conf_destroyChris Dunlap2014-10-061-10/+16
| | | | | | | | | Reset struct zed_conf file descriptors to -1 after close(), and pointers to NULL after free(). Signed-off-by: Chris Dunlap <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #2756
* Obtain advisory lock on ZED PID fileChris Dunlap2014-10-063-33/+78
| | | | | | | | | | | | | | | | | ZED uses an advisory lock on its state file to protect against multiple instances running concurrently. However, work is planned to move this state information into the kernel, and ZED will still need to protect against starting multiple instances. This commit adds an advisory lock on the PID file to protect against starting multiple instances. A lock failure can be overridden with the "-f" (force) command-line option. The advisory lock on the state file is being retained for as long as the state information is stored in the state file. Signed-off-by: Chris Dunlap <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #2756
* zfs send -p send properties only for snapshots that are actually sentAndriy Gapon2014-10-021-4/+25
| | | | | | | | | | | | | | | | ... as opposed to sending properties of all snapshots of the relevant filesystem. The previous behavior results in properties being set on all snapshots on the receiving side, which is quite slow. Behavior of zfs send -R is not changed. References: http://thread.gmane.org/gmane.comp.file-systems.openzfs.devel/346 Ported-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #2729 Issue #2210
* FreeBSD PR kern/172259: Fixes zfs receive errorssmh2014-10-021-2/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | FreeBSD PR kern/172259: Fixes zfs receive errors caused by snapshot replication being processed in a random order instead of creation order. Eliminates needless filesystem renames caused by removed parent snapshots which subsequently causes many more errors. PR: kern/172259 Submitted by: Steven Hartland Reviewed by: pjd (mentor) Approved by: pjd (mentor) MFC after: 2 weeks References: https://github.com/freebsd/freebsd/commit/4995789 Porting notes: Minor whitespace fixes were made to conform with style requirements: lib/libzfs/libzfs_sendrecv.c: 2269: indent by spaces instead of tabs lib/libzfs/libzfs_sendrecv.c: 2270: indent by spaces instead of tabs Ported-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #2729
* Implement -t option to zpool create for temporary pool namesRichard Yao2014-09-306-5/+62
| | | | | | | | | | | | | | | | | | | | | | | | | Creating virtual machines that have their rootfs on ZFS on hosts that have their rootfs on ZFS causes SPA namespace collisions when the standard name rpool is used. The solution is either to give each guest pool a name unique to the host, which is not always desireable, or boot a VM environment containing an ISO image to install it, which is cumbersome. 26b42f3f9d03f85cc7966dc2fe4dfe9216601b0e introduced `zpool import -t ...` to simplify situations where a host must access a guest's pool when there is a SPA namespace conflict. We build upon that to introduce `zpool import -t tname ...`. That allows us to create a pool whose in-core name is tname, but whose on-disk name is the normal name specified. This simplifies the creation of machine images that use a rootfs on ZFS. That benefits not only real world deployments, but also ZFSOnLinux development by decreasing the time needed to perform rootfs on ZFS experiments. Signed-off-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #2417
* zpool import -t should not update cachefileRichard Yao2014-09-302-1/+4
| | | | | | | | | | | | | zpool import's -t parameter is intended for use with -R when operating on pools that belong to other systems. Like -R, pools imported in this way should not update the cachefile unless explicitly requested. The initial implementation allowed the cachefile to be updated when -R was not used. This went uncaught during testing because -R had implicitly disabled use of the cachefile. Signed-off-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #2417
* Add add_prop_list_default helperRichard Yao2014-09-301-10/+17
| | | | | | | | | | | Adding to a property list only if there is no existing value is used twice. Once by zpool create -R and again by zpool import -R. Now that zpool create -t and zpool import -t also need it, lets refactor it into a helper function to make the code more readable. Signed-off-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #2417
* Make user stack limit configurableBrian Behlendorf2014-09-303-30/+47
| | | | | | | | | | | | | | | | | To aid in detecting and debugging stack overflow issues make the user space stack limit configurable via a new ZFS_STACK_SIZE environment variable. The value assigned to ZFS_STACK_SIZE will be used as the default stack size in bytes. Because this is mainly useful as a debugging aid in conjunction with ztest the stack limit is disabled by default. See the ztest(1) man page for additional details on using the ZFS_STACK_SIZE environment variable. Signed-off-by: Brian Behlendorf <[email protected]> Signed-off-by: Ned Bass <[email protected]> Closes #2743 Issue #2293
* Perform whole-page page truncation for hole-punching under a range lockTim Chase2014-09-291-22/+8
| | | | | | | | | | | | | | | | | As an attempt to perform the page truncation more optimally, the hole-punching support added in 223df0161fad50f53a8fa5ffeea8cc4f8137d522 truncated performed the operation in two steps: first, sub-page "stubs" were zeroed under the range lock in zfs_free_range() using the new zfs_zero_partial_page() function and then the whole pages were truncated within zfs_freesp(). This left a window of opportunity during which the full pages could be touched. This patch closes the window by moving the whole-page truncation into zfs_free_range() under the range lock. Signed-off-by: Tim Chase <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #2733
* Refer to ZED's scripts as ZEDLETsChris Dunlap2014-09-2514-92/+93
| | | | | | | | | | | | | | The executables invoked by the ZED in response to a given zevent have been generically referred to as "scripts". By convention, these scripts have aimed to be /bin/sh compatible for reasons of portability and comprehensibility. However, the ZED only requires they be executable and (ideally) capable of reading environment variables. As such, these scripts are now referred to as ZEDLETs (ZFS Event Daemon Linkage for Executable Tasks). Signed-off-by: Chris Dunlap <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #2735
* Replace zed's use of malloc with callocChris Dunlap2014-09-253-8/+4
| | | | | | | | | | | | | | When zed allocates memory via malloc(), it typically follows that with a memset(). However, calloc() implementations can often perform optimizations when zeroing memory: https://stackoverflow.com/questions/2688466/why-mallocmemset-is-slower-than-calloc This commit replaces zed's use of malloc() with calloc(). Signed-off-by: Chris Dunlap <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #2736
* Fix zed io-spare.sh dash incompatibilityChris Dunlap2014-09-231-3/+4
| | | | | | | | | | | | | | | The zed's io-spare.sh script defines a vdev_status() function to query the 'zpool status' output for obtaining the status of a specified vdev. This function contains a small awk script that uses a parameter expansion (${parameter/pattern/string}) supported in bash but not in dash. Under dash, this fails with a "Bad substitution" error. This commit replaces the awk script with a (hopefully more portable) sed script that has been tested under both bash and dash. Signed-off-by: Chris Dunlap <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #2536
* Illumos 5138 - add tunable for maximum number of blocks freed in one txgMax Grossman2014-09-232-0/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Reviewed by: Adam Leventhal <[email protected]> Reviewed by: Mattew Ahrens <[email protected]> Reviewed by: Josef 'Jeff' Sipek <[email protected]> Reviewed by: Richard Elling <[email protected]> Reviewed by: George Wilson <[email protected]> Approved by: Dan McDonald <[email protected]> References: https://www.illumos.org/issues/5138 https://github.com/illumos/illumos-gate/commit/af3465d Porting notes: Because support for exposing a uint64_t parameter wasn't added until v3.17-rc1 the zfs_free_max_blocks variable has been declared as a unsigned long. This is already far larger than required and it allows us to avoid additional autoconf compatibility code. The default value has been set to 100,000 on Linux instead of ULONG_MAX which is used on Illumos. This was done to limit the number of outstanding IOs in the system when snapshots are destroyed. This helps ensure individual TXG sync times are kept reasonable and memory isn't wasted managing a huge backlog of outstanding IOs. Ported by: Turbo Fredriksson <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #2675 Closes #2581
* Illumos 4753 - increase number of outstanding async writes when sync task is ↵Alex Reece2014-09-235-6/+46
| | | | | | | | | | | | | | | | | | | | | | | | | | waiting Reviewed by: Matthew Ahrens <[email protected]> Reviewed by: George Wilson <[email protected]> Reviewed by: Adam Leventhal <[email protected]> Reviewed by: Christopher Siden <[email protected]> Reviewed by: Dan McDonald <[email protected]> Approved by: Garrett D'Amore <[email protected]> References: https://www.illumos.org/issues/4753 https://github.com/illumos/illumos-gate/commit/73527f4 Comments by Matt Ahrens from the issue tracker: When a sync task is waiting for a txg to complete, we should hurry it along by increasing the number of outstanding async writes (i.e. make vdev_queue_max_async_writes() return a larger number). Initially we might just have a tunable for "minimum async writes while a synctask is waiting" and set it to 3. Ported-by: Tim Chase <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #2716
* Illumos 5116 - zpool history -i goes into infinite loopMatthew Ahrens2014-09-231-4/+19
| | | | | | | | | | | | | | | | | | 5116 zpool history -i goes into infinite loop Reviewed by: Christopher Siden <[email protected]> Reviewed by: Dan Kimmel <[email protected]> Reviewed by: George Wilson <[email protected]> Reviewed by: Richard Elling <[email protected]> Reviewed by: Boris Protopopov <[email protected]> Approved by: Dan McDonald <[email protected]> References: https://www.illumos.org/issues/5116 https://github.com/illumos/illumos-gate/commit/3339867 Ported by: Turbo Fredriksson <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #2715
* Illumos 5135 - zpool_find_import_cached() can use fnvlist_*Matthew Ahrens2014-09-231-11/+5
| | | | | | | | | | | | | | | Reviewed by: Christopher Siden <[email protected]> Reviewed by: Max Grossman <[email protected]> Reviewed by: Richard Elling <[email protected]> Approved by: Dan McDonald <[email protected]> References: https://www.illumos.org/issues/5135 https://github.com/illumos/illumos-gate/commit/b18d6b0 Ported by: Turbo Fredriksson <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #2693
* Illumos 5139 - SEEK_HOLE failed to report a hole at end of fileMatthew Ahrens2014-09-232-9/+21
| | | | | | | | | | | | | | | | | | | | 5139 SEEK_HOLE failed to report a hole at end of file Reviewed by: Adam Leventhal <[email protected]> Reviewed by: Alex Reece <[email protected]> Reviewed by: Christopher Siden <[email protected]> Reviewed by: George Wilson <[email protected]> Reviewed by: Max Grossman <[email protected]> Reviewed by: Peng Dai <[email protected]> Reviewed by: Richard Elling <[email protected]> Approved by: Dan McDonald <[email protected]> References: https://www.illumos.org/issues/5139 https://github.com/illumos/illumos-gate/commit/0fbc0cd Ported by: Turbo Fredriksson <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #2714
* lib/libzpool/kernel.c: Assert no owners in rw_destroy()Richard Yao2014-09-231-1/+1
| | | | | | | | | This is intended to cause ztest to fail when rw_destroy() is called on a rwlock that has owners. Signed-off-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #2330
* Fix function call with uninitialized value in vdev_inuseRichard Yao2014-09-231-1/+2
| | | | | | | | | | | | | | LLVM's static analyzer reported that we could pass an uninitialized pool_guid to spa_by_guid() in vdev_inuse(). Upon review, it is correct. An attempt to repurpose a spare or L2ARC drive from an exported pool will cause the pool_guid passed to spa_by_guid() to be unintialized information from the stack. This will cause non-deterministic behavior. Since there is no reason why we cannot repurpose such disks, we modify vdev_inuse() to avoid calling spa_by_guid() when they are detected. Signed-off-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #2330
* Properly NULL terminate string in zfs_strcmp_pathnameRichard Yao2014-09-231-1/+1
| | | | | | | | The utility cppcheck caught this. Signed-off-by: Richard Yao <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Issue #2330
* Illumos 5147 - zpool list -v should show individual disk capacityGeorge Wilson2014-09-232-34/+63
| | | | | | | | | | | | | | | | | | | | The 'zpool list -v' command displays lots of info but excludes the capacity of each disk. This should be added. 5147 zpool list -v should show individual disk capacity Reviewed by: Adam Leventhal <[email protected]> Reviewed by: Christopher Siden <[email protected]> Reviewed by: Matthew Ahrens <[email protected]> Reviewed by: Richard Elling <[email protected]> Approved by: Dan McDonald <[email protected]> References: https://www.illumos.org/issues/5147 https://github.com/illumos/illumos-gate/commit/7a09f97 Ported by: Turbo Fredriksson <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #2688
* Illumos 5161 - add tunable for number of metaslabs per vdevMatthew Ahrens2014-09-232-2/+24
| | | | | | | | | | | | | | | | | | | 5161 add tunable for number of metaslabs per vdev Reviewed by: Alex Reece <[email protected]> Reviewed by: Christopher Siden <[email protected]> Reviewed by: George Wilson <[email protected]> Reviewed by: Paul Dagnelie <[email protected]> Reviewed by: Saso Kiselkov <[email protected]> Reviewed by: Richard Elling <[email protected]> Approved by: Richard Lowe <[email protected]> References: https://www.illumos.org/issues/5161 https://github.com/illumos/illumos-gate/commit/bf3e216 Ported by: Turbo Fredriksson <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #2698
* Illumos 5177 - remove dead code from dsl_scan.cMatthew Ahrens2014-09-221-46/+36
| | | | | | | | | | | | | | | | | | | | | | 5177 remove dead code from dsl_scan.c Reviewed by: Christopher Siden <[email protected]> Reviewed by: George Wilson <[email protected]> Reviewed by: Richard Elling <[email protected]> Reviewed by: Richard Lowe <[email protected]> Approved by: Robert Mustacchi <[email protected]> References: https://www.illumos.org/issues/5177 https://github.com/illumos/illumos-gate/commit/5f37736 Porting notes: The local variable 'buf' was removed from dsl_scan_visitbp(). This wasn't part of the original patch but it should have been. Ported by: Turbo Fredriksson <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #2712
* Illumos 5174 - add sdt probe for blocked read in dbuf_read()Adam Leventhal2014-09-221-0/+2
| | | | | | | | | | | | | | | | | | | | 5174 add sdt probe for blocked read in dbuf_read() Reviewed by: Basil Crow <[email protected]> Reviewed by: Matthew Ahrens <[email protected]> Reviewed by: Steven Hartland <[email protected]> Reviewed by: Richard Elling <[email protected]> Reviewed by: Boris Protopopov <[email protected]> Reviewed by: Steven Hartland <[email protected]> Reviewed by: Garrett D'Amore <[email protected]> Approved by: Robert Mustacchi <[email protected]> References: https://www.illumos.org/issues/5174 https://github.com/illumos/illumos-gate/commit/f6164ad Ported by: Turbo Fredriksson <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #2710
* Remove obsolete comment about guard pagesNed Bass2014-09-221-6/+0
| | | | | | | | | | Remove an obsolete comment that refers to code removed by commit 79c6e4c4. The code and comment related to space consumed by guard pages in user-space stacks, which we no longer take into account. Signed-off-by: Ned Bass <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #2722
* Remove reverse indentation from zed comments.Chris Dunlap2014-09-227-61/+83
| | | | | | | | | Remove all occurrences of reverse indentation from zed comments for consistency within the project code base. Signed-off-by: Chris Dunlap <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #2695
* Illumos 5140 - message about "%recv could not be opened" is printed when ↵Matthew Ahrens2014-09-181-1/+9
| | | | | | | | | | | | | | | | | | booting after crash Reviewed by: Christopher Siden <[email protected]> Reviewed by: George Wilson <[email protected]> Reviewed by: Max Grossman <[email protected]> Reviewed by: Richard Elling <[email protected]> Approved by: Dan McDonald <[email protected]> References: https://www.illumos.org/projects/illumos-gate//issues/5140 https://github.com/illumos/illumos-gate/commit/2243853 Ported by: Turbo Fredriksson <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #2676
* Document environment variables for zdb, zfs, zinject and zpool.Turbo Fredriksson2014-09-184-0/+24
| | | | | | Signed-off-by: Turbo Fredriksson <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #2691
* Fix z_teardown_inactive_lock deadlockBrian Behlendorf2014-09-111-1/+1
| | | | | | | | | | | | | | | When rolling back a mounted filesystem zfs_suspend() is called which acquires the z_teardown_inactive_lock. This lock can not be dropped until the filesystem has been rolled back and resumed in zfs_resume_fs(). Therefore, we must not call iput() under this lock because it may result in the inode->evict() handler being called which also takes this lock. Instead use zfs_iput_async() to ensure dropping the last reference is deferred and runs in a safe context. Signed-off-by: Brian Behlendorf <[email protected]> Closes #2670
* Document the "readonly" pool propertyTim Chase2014-09-091-0/+18
| | | | | | | | This documentation is based FreeBSD's zpool(8) man page. Signed-off-by: Tim Chase <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #2682
* Implement fallocate FALLOC_FL_PUNCH_HOLETim Chase2014-09-084-21/+145
| | | | | | | | | | | | | | | | | | | | | | | | Add support for the FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE mode of fallocate(2). Mimic the behavior of other native file systems such as ext4 in cases where the file might be extended. If the offset is beyond the end of the file, return success without changing the file. If the extent of the punched hole would extend the file, only the existing tail of the file is punched. Add the zfs_zero_partial_page() function, modeled after update_page(), to handle zeroing partial pages in a hole-punching operation. It must be used under a range lock for the requested region in order that the ARC and page cache stay in sync. Move the existing page cache truncation via truncate_setsize() into zfs_freesp() for better source structure compatibility with upstream code. Add page cache truncation to zfs_freesp() and zfs_free_range() to handle hole punching. Signed-off-by: Brian Behlendorf <[email protected]> Signed-off-by: Tim Chase <[email protected]> Closes #2619
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