btrfs-progs-4.14 (2017-11-16) * build: libzstd now required by default * check: more lowmem mode repair enhancements * subvol set-default: also accept path * prop set: compression accepts no/none, same as "" * filesystem usage: enable for filesystem on top of a seed device * rescue: new command fix-device-size * other * new tests * cleanups and refactoring * doc updates btrfs-progs-4.13.3 (2017-10-16) * check: fix --force, wrong check for a mounted block device * build: fix --with-convert parsing * subvol list: don't list TOPLEVEL * other: update tests btrfs-progs-4.13.2 (2017-10-06) * subvol list: * don't list toplevel subvolume among deleted (broken since 4.8.3) * minor adjustments of uuid print format * subvol delete: * fix swapped behaviour of --commit-each and --commit-after * fix potentially lost sync if subvolumes are from different filesystems * check: add cache for metadata blocks, should improve performance * other: * new tests, testsuite updates * doc updates * cleanups btrfs-progs-4.13.1 (2017-09-25) * image: speed up generating the sanitized names, do not generate unprintable chars * completion: add missing commands, better mount point detection * restore: add zstd support; libzstd detected automatically, will be requested by default in the future, or can be configured out * other: * misc fixes found by sparse * doc enhancements, ioctl manual page started * updated and new tests * build fixes btrfs-progs-4.13 (2017-09-08) * convert: reiserfs support * check: new option --force to allow check of a mounted filesystem (no repair) * mkfs: --rootdir will now copy special files * dump-tree: minor output changes * inspect rootid: accept file as arugment * dev usage: don't calculate slack space for missing devices * fi du: don't print error on EMPTY_SUBVOL (inode number 2) * build: * fixed support for sanitization features on gcc (tsan, asan, ubsan) * fix PIE build * other: * misc cleanups and stability fixes * travis CI enhancements * new tests, fuzzed images * testsuite cleanups btrfs-progs-4.12.1 (2017-08-25) * build: * fix cross-compilation * use gnu90 explicitly * dump-tree: more relaxed checks so -b can print block on a damaged fs * convert: fix the 1MB range exclusion * check: more dir_item hash checks * other * added missing getopt spec for some options * doc fixes * cleanups * test updates btrfs-progs-4.12 (2017-07-26) * subvol show: new options --rootid, --uuid to show subvol by the given spec * convert: progress report fixes, found by tsan * image: progress report fixes, found by tsan * fix infinite looping in find-root, or when looking for free extents * other: * code refactoring * docs updates * build: ThreadSanitizer support * tests: stricter checks for mounted filesystem btrfs-progs-4.11.1 (2017-06-30) * image: restoring from multiple devices * dev stats: make --check option work * check: fix false alert with extent hole on a NO_HOLE filesystem * check: lowmem mode, fix false alert in case of mixed inline and compressed extent * convert: work with large filesystems (many TB) * convert: fix overwriting of eb header flags * convert: do not clear NODATASUM flag in inodes when run with --no-datasum * docs updates * build: sync Android.mk with Makefile * tests: * new tests * fix 008 and 009, shell quotation mistake btrfs-progs-4.11 (2017-05-18) * receive: fix handling empty stream with -e (multi-stream) * send dump: fix printing long file names * stability fixes for: dump-super, print-tree, check * option parser updates: global options are parsed before the subcommand name (old xfstests will fail) * new and updated tests * documentation updates btrfs-progs-4.10.2 (2017-03-31) * check: lowmem mode fix for false alert about lost backrefs * convert: minor bugfix * library: fix build, misisng symbols, added tests btrfs-progs-4.10.1 (2017-03-17) * receive: handle subvolume in path clone * convert: rollback fixed (rewrite was needed to address previous design issues) * build: fix build of 3rd party tools, missing * dump-tree: print log trees * other * new and updated tests btrfs-progs-4.10 (2017-03-08) * send: dump output fixes: missing newlies * check: several fixes for the lowmem mode, improved error reporting * build * removed some library deps for binaries that not use them * ctags, cscope * split Makefile to the autotool generated part and the rest, not needed to autogen.sh after adding a file * shared code: sync easy parts with kernel sources * other * lots of cleanups * source file reorganization: convert, mkfs, utils * lots of spelling fixes in docs, other updates * more tests btrfs-progs-4.9.1 (2017-01-27) * check: * use correct inode number for lost+found files * lowmem mode: fix false alert on dropped leaf * size reports: negative numbers might appear in size reports during device deletes (previously in EiB units) * mkfs: print device being trimmed * defrag: v1 ioctl support dropped * quota: print message before starting to wait for rescan * qgroup show: new option to sync before printing the stats * other: * corrupt-block enhancements * backtrace and co. cleanups * doc fixes btrfs-progs-4.9 (2016-12-23) * check: many lowmem mode updates * send: use splice syscall to copy buffer from kernel * receive: new option to dump the stream in textual form * convert: * move sources to own directory * prevent accounting of blocks beyond end of the device * make it work with 64k sectorsize * mkfs: move sources to own directory * defrag: warns if directory used without -r * dev stats: * new option to check stats for non-zero values * add long option for -z * library: version bump to 0.1.2, added subvol_uuid_search2 * other: * cleanups * docs updates btrfs-progs-4.8.5 (2016-11-30) * receive: fix detection of end of stream (error reported even for valid streams) * other: * added test for the receive bug * fix linking of library-test btrfs-progs-4.8.4 (2016-11-25) * check: support for clearing space cache v2 (free-space-tree) * send: * more sanity checks (with tests), cleanups * fix for fstests/btrfs/038 and btrfs/117 failures * build: * fix compilation of standalone ioctl.h, pull NULL definition * fix library link errors introduced in 4.8.3 * tests: * add more fuzzed images from bugzilla * add bogus send stream checks * fixups and enhancements for CI environment builds * misc refinements and updates of testing framework * other: * move sources for btrfs-image to own directory * deprecated and not build by default: btrfs-calc-size, btrfs-show-super * docs updates btrfs-progs-4.8.3 (2016-11-11) * check: * support for clearing space cache (v1) * size reduction of inode backref structure * send: * fix handling of multiple snapshots (-p and -c options) * transfer buffer increased (should reduce number of context switches) * reuse existing file for output (-f), eg. when root cannot create files (NFS) * dump-tree: * print missing items for various structures * new: dev stats, balance status item * sync key names with kernel (the persistent items) * subvol show: now able to print the toplevel subvolume -- the creation time might be wrong though * mkfs: * store the creation time of toplevel root inode * print UUID in the summary * build: travis CI for devel * other: * lots of cleanups and refactoring * switched to on-stack path structure * fixes from coverity, asan, ubsan * new tests * updates in testing infrastructure * fixed convert test 005 btrfs-progs-4.8.2 (2016-10-26) * convert: also convert file attributes * convert: fix wrong tree block alignment for unalianged block group * check: quota verify fixes, handle reloc tree * build: add stub for FIEMAP_EXTENT_SHARED, compiles on ancient kernels * build: add stub for BUILD_ASSERT when ioctl.h is included * dump-tree: don't crash on unrecognized tree id for -t * tests: * add more ioctl tests * convert: more symlink tests, attribute tests * quota verify for reloc tree * other cleanups btrfs-progs-4.8.1 (2016-10-12) * 32bit builds fixed * build without backtrace support fixed btrfs-progs-4.8 (2016-10-05) * error handling improvements all over the place * new fuzzed images, test updates * doc fixups * minor cleanups and improvements * kernel library helpers moved to own directory * qgroup: fix regression leading to incorrect status after check, introduced in 4.7 btrfs-progs-4.7.3 (2016-09-21) * fixed free space tree compat status * check: low-mem mode: handle partially dropped snapshots * dump-super: consolidate options for superblock copy * tree-stats: check mount status * subvol delete: handle verbosity option * defrag: print correct error string * mkfs: fix reading rotational status * other: * UBSAN build option * documentation updates * enhanced tests: convert, fuzzed images, more tools to run on fuzzed images btrfs-progs-4.7.2 (2016-09-05) * check: * urgent fix: false report of backref mismatches; do not --repair last unaffected version 4.6.1 (code reverted to that state) * fuzzing and fixes * added more sanity checks for various structures * testing images added * build: udev compatibility: do not install .rules on version < 190 * other: * dump-super: do not crash on garbage value in csum_type * minor improvements in messages and help strings * documentation: * filesystem features btrfs-progs-4.7.1 (2016-08-25) * check: * new optional mode: optimized for low memory usage (memory/io tradeoff) * --mode=lowmem, not default, still considered experimental * does not work with --repair yet * convert: regression fix, ext2_subvol/image rw permissions * mkfs/convert: * two-staged creation, partially created filesystem will not be recognized * improved error handling (fewer BUG_ONs) * convert: preparation for more filesystems to convert from * documentation updates: quota, qgroup * other * message updates * more tests * more build options, enhanced debugging btrfs-progs-4.7 (2016-07-29) * convert: fix creating discontig extents * check: speed up traversing heavily reflinked extents within a file * check: verify qgroups of higher levels * check: repair can now fix wrong qgroup numbers * balance: new option to run in the background * defrag: default extent target size changed to 32MiB * du: silently skip non-btrfs dirs/files * documentation updates: btrfs(5), btrfs(8), balance, subvolume, scrub, filesystem, convert * bugfixes: * unaligned access (reported for sparc64) in raid56 parity calculations * use /bin/bash * other stability fixes and cleanups * more tests btrfs-progs-4.6.1 (2016-06-24) * filesystem resize: negative resize argument accepted again * qgroup rescan: fix skipping when rescan is in progress * mkfs: initialize stripesize to correct value * testsuite updates, mostly convert tests * documentation updates * btrfs-device, btrfs-restore manual pages enhanced * misc fixups btrfs-progs-4.6 (2016-06-10) * convert - major rewrite: * fix a long-standing bug that led to mixing data blocks into metadata block groups * the workaround was to do full balance after conversion, which was recommended practice anyway * explicitly set the lowest supported version of e2fstools to 1.41 * provide and install udev rules file that addresses problems with device mapper devices, renames after removal * send: new option: quiet * dev usage: report slack space (device size minus filesystem area on the dev) * image: support DUP * build: short options to enable debugging builds * other: * code cleanups * build fixes * more tests and other enhancements btrfs-progs-4.5.3 (2016-05-11) * ioctl: fix unaligned access in buffer from TREE_SEARCH; might cause SIGBUS on architectures that do not support unaligned access and do not performa any fixups * improved validation checks of superblock and chunk-related structures * subvolume sync: fix handling of -s option * balance: adjust timing of safety delay countdown with --full-balance * rescue super-recover: fix reversed condition check * check: fix bytes_used accounting * documentation updates: mount options, scrub, send, receive, select-super, check, mkfs * testing: new fuzzed images, for superblock and chunks btrfs-progs-4.5.2 (2016-05-02) * new/moved command: btrfs-calc-stats -> btrfs inspect tree-stats * check: fix false alert for metadata blocks crossing stripe boundary * check: catch when qgroup numbers mismatch * check: detect running quota rescan and report mismatches * balance start: add safety delay before doing a full balance * filesystem sync: is now silent * filesystem show: don't miss filesystems with partially matching uuids * dev ready: accept only one argument for device * dev stats: print "devid:N" for a missing device instead of "(null)" * other: * lowest supported version of e2fsprogs is 1.41 * minor cleanups, test updates btrfs-progs-4.5.1 (2016-03-31) * mkfs: allow DUP on multi-device filesystems * bugfixes: build fixes, assorted other fixes btrfs-progs-4.5 (2016-03-20) New/moved commands: * btrfs-show-super -> btrfs inspect-internal dump-super * btrfs-debug-tree -> btrfs inspect-internal dump-tree New commands: * btrfs filesystem du - calculate disk usage, including shared extents Enhancements: * device delete - delete by id (needs kernel support, not merged to 4.6) * check - new option to specify chunk root * debug-tree/dump-tree - option -t understands human readable name of the tree (along numerical ids) * btrfs-debugfs - can dump block group information Bugfixes: * all commands should accept the option separator "--" * several fixes in device scan * restore works on filesystems with sectorsize > 4k * debug-tree/dump-tree - print compression type as string * subvol sync: fix crash, memory corruption * argument parsing fixes: subvol get-default, qgroup create/destroy/ assign, inspect subvolid-resolve * check for block device or regular file in several commands Other: * documentation updates * manual pages for the moved tools now point to btrfs-filesystem * testsuite updates btrfs-progs-4.4.1 (2016-02-26) * find-root: don't skip the first chunk * free-space-tree compat bits fix * build: target symlinks * documentation updates * test updates btrfs-progs-4.4 (2016-01-18) User visible changes: * mkfs.btrfs --data dup People asked about duplicating data on a single device for a long time. There are no technical obstacles preventing that, so it got enabled with a warning about potential dangers when the device will not do the duplicated copies. See mkfs.btrfs section DUP PROFILES ON A SINGLE DEVICE. * support balance filters added/enhanced in linux 4.4 * usage=min..max -- enhanced to take range * stripes=min..max -- new, filter by stripes for raid0/10/5/6 * limit=min..max -- enhanced to take range Note: due to backward compatibility, the range maximum for 'usage' is not inclusive as for the others, to keep the same behaviour as usage=N . * manual pages enhanced (btrfs, mkfs, mount, filesystem, balance) * error messages updates, rewordings -- some fstests may break due to that * added support for free-space-tree implementation of space cache -- this requires kernel 4.5 and is not recommended for non-developers yet * btrfs filesystem usage works with mixed blockgroups Other: * installation to /usr/local -- this has unintentionally changed during conversion to autotools in 3.19 * check: fix a false alert where extent record has wrong metadata flag * improved stability on fuzzed/crafted images when reading sys array in superblock * build: the 'ar' tool is properly detected during cross-compilation * debug-tree: option -t understands ids for tree root and chunk tree * preparatory work for btrfs-convert rewrite * sparse, gcc warning fixes * more memory allocation failure handling * cleanups * more tests Bugfixes: * chunk recovery: fix floating point exception * chunk recovery: endianity bugfix during rebuild * mkfs with 64K pages and nodesize reported superblock checksum mismatch * check: properly reset nlink of multi-linked file btrfs-progs-4.3.1 (2015-11-16) * fixes * device delete: recognize 'missing' again * mkfs: long names are not trimmed when doing ssd check * support partitioned loop devices * other * replace several mallocs with on-stack variables * more memory allocation failure handling * add tests for bugs fixed * cmd-device: switch to new message printing helpers * minor code cleanups btrfs-progs-4.3 (2015-11-06) * mkfs * mixed mode is not forced for filesystems smaller than 1GiB * mixed mode broken with mismatching sectorsize and nodesize, fixed * print version info earlier * print devices sorted by id * do not truncate target image with --rootsize * filesystem usage: * don't print global block reserve * print device id * minor output tuning * other cleanups * calc-size: * div-by-zero fix on an empty filesystem * fix crash * bugfixes: * more superblock sanity checks * consistently round size of all devices down to sectorsize * misc leak fixes * convert: don't try to rollback with a half-deleted ext2_saved subvolume * other: * check: add progress indicator * scrub: enhanced error message * show-super: read superblock from a given offset * add README * docs: update manual page for mkfs.btrfs, btrfstune, balance, convert and inspect-internal * build: optional build with more warnings (W=...) * build: better support for static checkers * build: html output of documentation * pretty-print: last_snapshot for root_item * pretty-print: stripe dev uuid * error reporting wrappers, introduced and example use * refactor open_file_or_dir * other docs and help updates * testing: * test for nodes crossing stripes * test for broken 'subvolume sync' * basic tests for mkfs, raid option combinations * basic tests for fuzzed images (check) * command intrumentation (eg valgrind) * print commands if requested * add README for tests btrfs-progs-4.2.3 (2015-10-19) * subvol sync: make it actually work again: it's been broken since 4.1.2, due to a reversed condition it returned immediately instead of waiting * scanning: do not scan already discovered filesystems (minor optimization) * convert: better error message in case the filesystem is not finalized * restore: off-by-one symlink path check fix btrfs-progs-4.2.2 (2015-10-05) * filesystem label: use fallback if the label ioctl is not available * convert: check nodesize constraints against commandline features (-O) * scrub: report status 'running' until all devices are finished * device scanning might crash in some scenarios * filesystem usage: print summary for non-root users btrfs-progs-4.2.1 (2015-09-20) * fix an off-by-one error in cross-stripe boundary check * if nodesize was 64k, any metadata block was reported as crossing, this leads to mkfs failure for example due to "no free blocks found" * for other nodesizes, if the end of the metadata block was 64k aligned, it was incorrectly reported by fsck * convert: don't write uninitialized data to image * image: * don't loop with option -t0 * don't create threads if compression is not requested * other: minor cleanups btrfs-progs-4.2 (2015-09-03) * enhancements: * mkfs: do not create extra single chunks on multiple devices * resize: try to guess the minimal size, 'inspect min-dev-size' * qgroup assign: add option to schedule rescan * chunk-recover: be more verbose about the scanning process * fixes: * check: * find stripes crossing stripe boundary -- created by convert * print correct range for file hole when there are no extents and learn how to fix it * replace: more sanity checks * convert: concurrency fixes related to reporting progress * find-root: option -a will not skip the current root anymore * subvol list: fix occasional crash * do not create stripes crossing stripe boundary * build: * fixes for musl libc * preliminary support for android (not working yet, more code changes needed) * new EXTRA_CFLAGS and EXTRA_LDFLAGS * other: * lots of cleanups * tests: lots of updates, new tests, framework improvements * documentation updates * debugging: print-tree shows stripe length btrfs-progs-4.1.2 (2015-07-14) * urgent bugfix: mkfs creates invalid filesystem, must be recreated btrfs-progs-4.1.1 (2015-07-10) -- Do not use this version! Bugfixes: * defrag: threshold overflow fix * fsck: * check if items fit into the leaf space * fix wrong nbytes * mkfs: * create only desired block groups for single device * preparatory work for fix on multiple devices Enhancements: * new alias for 'device delete': 'device remove' Other: * fix compilation on old gcc (4.3) * documentation updates * debug-tree: print nbytes * test: image for corrupted nbytes * corrupt-block: let it kill nbytes btrfs-progs-4.1 (2015-06-22) Bugfixes: * fsck.btrfs: no bash-isms * bugzilla 97171: invalid memory access (with tests) * receive: * cloning works with --chroot * capabilities not lost * mkfs: do not try to register bare file images * option --help accepted by the standalone utilities Enhancements: * corrupt block: ability to remove csums * mkfs: * warn if metadata redundancy is lower than for data * options to make the output quiet (only errors) * mixed case names of raid profiles accepted * rework the output: * more comprehensive, 'key: value' format * subvol: * show: * print received uuid * update the output * new options to specify size units * sync: grab all deleted ids and print them as they're removed, previous implementation only checked if there are any to be deleted - change in command semantics * scrub: print timestamps in days HMS format * receive: * can specify mount point, do not rely on /proc * can work inside subvolumes * send: new option to send stream without data (NO_FILE_DATA) * convert: specify incompat features on the new fs * qgroup: * show: distinguish no limits and 0 limit value * limit: ability to clear the limit * help for 'btrfs' is shorter, 1st level command overview * debug tree: print key names according to their C name New: * rescue zero-log * btrfsune: * rewrite uuid on a filesystem image * new option to turn on NO_HOLES incompat feature Deprecated: * standalone btrfs-zero-log Other: * testing framework updates * uuid rewrite test * btrfstune feature setting test * zero-log tests * more testing image formats * manual page updates * ioctl.h synced with current kernel uapi version * convert: preparatory works for more filesystems (reiserfs pending) * use static buffers for path handling where possible * add new helpers for send uilts that check memory allocations, switch all users, deprecate old helpers * Makefile: fix build dependency generation * map-logical: make it work again btrfs-progs-4.0.1 (2015-05-20) * restore: * can restore symlinks, new option --symlinks * long option variants added * convert: dropped dependency on acl.h header and libacl is not required for build * fix for 'check' crash * device remove error message fix * preparatory works for fsid change btrfs-progs-4.0 (2015-04-29) * resize: * don't accept file as an argument (it's confusing) * print better error message in case of an error * restore: optionally restore metadata (time, mode, uid/gid) * receive: optionally enforce chroot * new rescue subcommand 'zero-log', same as btrfs-zero-log, but now also part of the main utility * check: * free space checks match kernel, fixes incorrect reports * convert: fix setting of checksum bit if --no-datasum is used * fsck.btrfs: don't print messages * fix quota rescan on PPC64 (mangled ioctl number) * test updates * documentation: files renamed to .asciidoc, misc fixups btrfs-progs-3.19.1 (2015-03-25) * convert: * new option to specify metadata block size * --no-progress actually works * restore: properly handle the page boundary corner case * build fixes: * missing macro from public header, BTRFS_BUILD_VERSION * wrong handling of --enable-convert * filesystem usage: reports correct space for degraded mounts * other: * mkfs: help string updates * completion: added 'usage' subcommands * cleanups in qgroup code, preparatory work btrfs-progs-3.19 (2015-03-11) * build converted to autotools * btrfs-image * restore can now run in parallel threads * fixed restore of multiple image from multiple devices onto a single dev * introduced metadump v2 * check: make --init-csum-tree and --init-extent-tree work together * find-new: option to search through all metadata even if a root was already found * convert: show progress by default, can be turned off * corrupt-block: option to work on a specific root * bash completion script for all subcommands btrfs-progs-3.18.2 (2015-01-27) * qgroup show: print human readable sizes, options to say otherwise * check: new option to explicitly say no to writes * mkfs: message about trimming is not printed to stderr * filesystem show: fixed return value * tests: new infrastructure * btrfstune: force flag can be used together with seeding option * backtrace support is back * getopt cleanups * doc and help updates btrfs-progs-3.18.1 (2015-01-09) * minor fixes * documentation updates btrfs-progs-3.18 (2014-12-30) * mkfs - skinny-metadata feature is now on by default, first introduced in kernel 3.10 * filesystem usage - give an overview of fs usage in a way that's more comprehensible than existing 'filesystem df' * device usage - more detailed information about per-device allocations * check * option to set a different tree root byte number * ability to link lost files to lost+found, caused by a recent kernel bug * repair of severely corrupted fs (use with care) * convert - option to show progress * subvol create - print the commit mode inline, print the global mode only if --verbose * other updates: musl-libc support, coverity bugfixes, new test images, documentation btrfs-progs-3.17.3 (2014-12-04) * convert: fix conversion of sparse ext* filesystems * show: resolve to the correct path * fsck: more verbose error for root dir problems btrfs-progs-3.17.2 (2014-11-19) * check improvements * add ability to replace missing dir item/dir indexes * fix missing inode items * create missing root dirid * corrupt block: enhancements for testing fsck * zero-log: able to reset a fs with bogus log tree pointer (bug_72151) btrfs-progs-3.17.1 (2014-11-04) * filesystem df: argument handling * fix linking with libbtrfs * replace: better error reporting * filesystem show: fixed stall if run concurrently with balance * check: fixed argument parsing for --subvol-extents * filesystem df: SI prefixes corrected btrfs-progs-3.17 (2014-10-17) * check: --init-csum-tree actually does something useful, rebuilds the whole csum tree * /dev scanning for btrfs devices is gone * /proc/partitions scanning is gone, blkid is used exclusively * new subcommand subvolume sync * filesystem df: new options to set unit format * convert: allow to copy label from the origin, or specify a new one btrfs-progs-3.16.2 (2014-10-01) * a few fixes in fsck and image tools btrfs-progs-3.16.1 (2014-09-15) * print GlobalReserve in filesystem df output * new option -R in subvol list * library version defines * static build is fixed * build without documentation is possible btrfs-progs-3.16 (2014-08-26) * mkfs: new option to specify UUID, drop experimental notice * check: new option to verify quotas, reduced memory requirements, new option to print extent sharing * restore: check length before decompression, more error handling, option to loop during restoring * balance: new filter 'limit' * recover: allow to read all sb copies * btrfstune: new option to force dangerous changes * receive: new option to limit number of errors * show-super: skip unrecognized sb, add option to force * debug-tree: print tree by id * documentation updates btrfs-progs-3.14.2 (2014-05-29) * documentation is now written in asciidoc and there are manpages for each subcommand * misc bugfixes btrfs-progs-3.14.1 (2014-04-18) * properties: fix handling of option -t * restore: fix reading of compressed extents * minor code and doc updates btrfs-progs-3.14 (2014-04-06) * fsck: fixes and enhancements to --init-extent-tree mode * fsck: chunk-recover updates * scrub: add force option -f * send: check if subvolumes are read-only * subvol delete: add options to affect commit behaviour * btrfs: add property command group * restore: add dry-run option * restore: fix restoring of compressed files * mkfs: support for no-holes feature * mkfs: option -r deals with hardlinks and relative paths * mkfs: discard phase is interruptible * documentation updates btrfs-progs-3.12 (2013-11-25) * announcement, tarballs * first release after 0.19 (2009/06) with a lot of changes