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Qu Wenruo ffb1b847bd btrfs-progs: Fix wrong tree block alignment for unalianged block group 
Commit 854437ca(btrfs-progs: extent-tree: avoid allocating tree block
that crosses stripe boundary) introduces check for logical bytenr not
crossing stripe boundary.

However that check is not completely correct.
It only checks if the logical bytenr and length agaist absolute logical
offset.
That's to say, it only check if a tree block lies in 64K logical stripe.

But in fact, it's possible a block group starts at bytenr unaligned with
64K, just like the following case.

Then btrfsck will give false alert.

0       32K       64K       96K        128K         160K ...
        |--------------- Block group A ---------------------
	|<-----TB 32K------>|
        |/Scrub stripe unit/|
|    WRONG UNIT   |

In that case, TB(tree block) at bytenr 32K in fact fits into the kernel
scrub stripe unit.
But doesn't fit into the pure logical 64K stripe.

Fix check_crossing_stripes() to compare bytenr to block group start, not
to absolute logical bytenr.

Reported-by: Jussi Kansanen <jussi.kansanen@gmail.com>
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2016-10-25 14:31:06 +02:00
Documentation btrfs-progs: fix user-facing typos in docs and help strings 2016-10-03 15:07:22 +02:00
kernel-lib btrfs-progs: move 3rd party kernel library modules to own directory 2016-10-03 15:07:22 +02:00
m4 btrfs-progs: build: add m4 macros for AC_CHECK_DEFINE 2016-06-24 14:05:44 +02:00
tests btrfs-progs: test: Add image for quota verify stack overflow 2016-10-24 15:03:12 +02:00
.gitignore btrfs-progs: build: let autotools include m4 2016-06-24 14:05:44 +02:00
64-btrfs-dm.rules btrfs-progs: udev: add rules for dm devices 2016-06-01 14:56:56 +02:00
Android.mk btrfs-progs: Add Android build mk file 2015-09-01 14:02:49 +02:00
androidcompat.h btrfs-progs: add compat header for android 2015-09-01 14:02:49 +02:00
autogen.sh btrfs-progs: build: let autotools include m4 2016-06-24 14:05:44 +02:00
backref.c btrfs-progs: cleanup, kill trivial btrfs_key_type helper 2016-10-03 11:33:15 +02:00
backref.h btrfs-progs: unify header file inclusion protections 2015-01-21 17:49:26 +01:00
bcp Btrfs-progs: Correct path munging in bcp 2011-10-25 09:18:58 -04:00
bitops.h btrfs-progs: compat: define DIV_ROUND_UP if not already defined 2015-06-05 23:29:59 +02:00
btrfs-calc-size.c btrfs-progs: copy btrfs-calc-size to inspect-internal tree-stats 2016-05-02 14:39:53 +02:00
btrfs-completion btrfs-progs: update docs and completion for tree-stats 2016-05-02 14:39:57 +02:00
btrfs-convert.c btrfs-progs: convert: Convert ext inode flags to btrfs inode flags 2016-10-24 14:58:07 +02:00
btrfs-corrupt-block.c btrfs-progs: corrupt-block: fix assertion condition 2016-10-03 11:33:15 +02:00
btrfs-crc.c btrfs-progs: btrfs-crc: make argc check more strict 2016-06-03 14:49:43 +02:00
btrfs-debug-tree.c btrfs-progs: unify naming of argc and argv 2016-03-14 13:42:47 +01:00
btrfs-debugfs btrfs-progs: btrfs-debugfs: cleanup unused variables reported by pylint 2016-10-24 14:57:46 +02:00
btrfs-find-root.c btrfs-progs: Add new option for specify chunk root bytenr 2016-03-14 13:42:47 +01:00
btrfs-fragments.c btrfs-progs: use ioctl search headers everywhere 2016-05-11 15:53:16 +02:00
btrfs-image.c btrfs-progs: image: fix compiler warning 2016-10-24 14:58:19 +02:00
btrfs-list.c btrfs-progs: constify string arguments where appropriate 2016-10-03 15:07:23 +02:00
btrfs-list.h btrfs-progs: remove trivial helpers for filtering functions 2016-09-21 14:12:38 +02:00
btrfs-map-logical.c btrfs-progs: use standard allocation functions in non-kenrel code 2016-10-03 11:33:15 +02:00
btrfs-select-super.c btrfs-progs: print help test to stdout 2016-09-05 12:20:24 +02:00
btrfs-show-super.c btrfs-progs: introduce inspect-internal dump-super 2016-03-14 13:42:47 +01:00
btrfs-zero-log.c btrfs-progs: print help test to stdout 2016-09-05 12:20:24 +02:00
btrfs.c btrfs-progs: move prefixcmp to utils 2016-01-14 11:07:10 +01:00
btrfsck.h btrfs-progs: chunk-recovery: Fix a float point error 2015-11-19 18:34:30 +01:00
btrfstune.c btrfs-progs: btrfstune: use common message helpers 2016-10-03 15:07:24 +02:00
CHANGES btrfs-progs: update CHANGES for v4.8.1 2016-10-12 15:19:50 +02:00
chunk-recover.c btrfs-progs: rename __setup_root and change to return void 2016-10-05 12:39:01 +02:00
cmds-balance.c btrfs-progs: balance: add another (shorter) option for background 2016-07-26 19:30:39 +02:00
cmds-check.c btrfs-progs: Fix wrong tree block alignment for unalianged block group 2016-10-25 14:31:06 +02:00
cmds-device.c btrfs-progs: rename btrfs_scan_lblkid() to btrfs_scan_devices() 2016-10-25 14:28:36 +02:00
cmds-fi-du.c btrfs-progs: build: detect fiemap shared flag but don't fail build 2016-10-25 14:28:36 +02:00
cmds-fi-du.h btrfs-progs: filesystem: add 'du' command 2016-03-14 13:42:47 +01:00
cmds-fi-usage.c btrfs-progs: fi usage: improved error handling in load_device_info 2016-09-21 14:12:10 +02:00
cmds-fi-usage.h btrfs-progs: add missing includes to header files 2015-06-10 02:52:21 +02:00
cmds-filesystem.c btrfs-progs: rename btrfs_scan_lblkid() to btrfs_scan_devices() 2016-10-25 14:28:36 +02:00
cmds-inspect-dump-super.c btrfs-progs: dump-super: print chunks after validation 2016-10-05 12:39:01 +02:00
cmds-inspect-dump-super.h btrfs-progs: unify naming of argc and argv 2016-03-14 13:42:47 +01:00
cmds-inspect-dump-tree.c btrfs-progs: dump-tree: fix crash on unrecognized tree id 2016-10-25 14:28:36 +02:00
cmds-inspect-dump-tree.h btrfs-progs: unify naming of argc and argv 2016-03-14 13:42:47 +01:00
cmds-inspect-tree-stats.c btrfs-progs: tree-stats: switch to common message helpers 2016-10-03 11:33:14 +02:00
cmds-inspect-tree-stats.h btrfs-progs: copy btrfs-calc-size to inspect-internal tree-stats 2016-05-02 14:39:53 +02:00
cmds-inspect.c btrfs-progs: use PATH_MAX in cmd_inspect_logical_resolve 2016-10-03 11:33:15 +02:00
cmds-property.c btrfs-progs: prop: simplify help printing code 2016-10-03 11:33:14 +02:00
cmds-qgroup.c btrfs-progs: remove trivial helpers for filtering functions 2016-09-21 14:12:38 +02:00
cmds-quota.c btrfs-progs: do not set optind if not necessary 2016-07-13 19:41:55 +02:00
cmds-receive.c btrfs-progs: receive: improved error handling in process_snapshot 2016-09-21 14:12:38 +02:00
cmds-replace.c btrfs-progs: refactor and extend btrfs_prepare_device arguments 2016-07-28 14:08:30 +02:00
cmds-rescue.c btrfs-progs: unify argc min/max checking, a few more 2016-03-14 13:42:47 +01:00
cmds-restore.c btrfs-progs: restore: update help text 2016-10-03 15:07:22 +02:00
cmds-scrub.c btrfs-progs: scrub: improved error handling in scrub_read_file 2016-09-21 14:12:10 +02:00
cmds-send.c btrfs-progs: send: remove unnecessary code 2016-10-25 14:28:36 +02:00
cmds-subvolume.c btrfs-progs: remove trivial helpers for filtering functions 2016-09-21 14:12:38 +02:00
commands.h btrfs-progs: clean up commands.h 2016-06-01 14:56:56 +02:00
configure.ac btrfs-progs: build: detect fiemap shared flag but don't fail build 2016-10-25 14:28:36 +02:00
COPYING fix COPYING 2007-06-12 15:41:08 -04:00
ctree.c btrfs-progs: handle errors from btrfs_alloc_path 2016-09-21 14:12:38 +02:00
ctree.h btrfs-progs: Copy btrfs inode flags from kernel header 2016-10-24 14:57:55 +02:00
dir-item.c btrfs-progs: cleanup, kill trivial btrfs_key_type helper 2016-10-03 11:33:15 +02:00
dir-test.c btrfs-progs: cleanup, kill trivial btrfs_set_key_type helper 2016-10-03 11:33:15 +02:00
disk-io.c btrfs-progs: rename btrfs_scan_lblkid() to btrfs_scan_devices() 2016-10-25 14:28:36 +02:00
disk-io.h btrfs-progs: rename raid6.c to raid56.c 2016-10-24 15:03:20 +02:00
extent_io.c btrfs-progs: handler memory allocation error in write_data_to_disk 2016-07-28 14:08:30 +02:00
extent_io.h btrfs-progs: Remove unnecessary parameter to clear_extent_uptodate 2016-10-03 15:07:23 +02:00
extent-cache.c btrfs-progs: extent-tree: Add add_merge_cache_extent function 2016-01-12 15:01:03 +01:00
extent-cache.h btrfs-progs: typo review of strings and comments 2016-06-01 14:56:56 +02:00
extent-tree.c btrfs-progs: Fix wrong tree block alignment for unalianged block group 2016-10-25 14:31:06 +02:00
file-item.c btrfs-progs: change btrfs_csum_final result param type to u8 2016-10-03 11:35:50 +02:00
file.c btrfs-progs: typo review of strings and comments 2016-06-01 14:56:56 +02:00
find-root.c btrfs-progs: replace leafsize with nodesize 2016-05-02 14:40:18 +02:00
find-root.h btrfs-progs: find-root: Allow btrfs-find-root to search chunk root even chunk root is corrupted 2016-02-26 17:27:58 +01:00
free-space-cache.c btrfs-progs: change btrfs_csum_final result param type to u8 2016-10-03 11:35:50 +02:00
free-space-cache.h btrfs-progs: check the free space tree in btrfsck 2016-01-12 15:02:54 +01:00
free-space-tree.c btrfs-progs: free-space-tree: minor message adjustments 2016-01-12 15:02:55 +01:00
free-space-tree.h btrfs-progs: check the free space tree in btrfsck 2016-01-12 15:02:54 +01:00
fsck.btrfs btrfs-progs: fsck.btrfs: Fix bashism and bad getopts processing 2015-05-21 16:53:44 +02:00
hash.h btrfs-progs: move btrfs_extref_hash() to hash.h 2016-10-25 14:28:36 +02:00
hasher.c Unaligned access fixes 2008-02-15 11:19:58 -05:00
help.c btrfs-progs: move prefixcmp to utils 2016-01-14 11:07:10 +01:00
inode-item.c btrfs-progs: move btrfs_extref_hash() to hash.h 2016-10-25 14:28:36 +02:00
inode-map.c btrfs-progs: handle errors from btrfs_alloc_path 2016-09-21 14:12:38 +02:00
inode.c btrfs-progs: convert: Fix a regression that ext2_save/image is not readonly 2016-08-19 13:52:43 +02:00
INSTALL btrfs-progs: INSTALL: enhance build instructions 2015-09-07 11:46:32 +02:00
internal.h btrfs-progs: libbtrfs: remove max/min macros from API 2016-03-14 13:42:47 +01:00
ioctl-test.c btrfs-progs: tests: make the ioctl-test actually useful 2016-10-24 14:57:19 +02:00
ioctl.h btrfs-progs: ioctl: fix build failure if BUILD_ASSERT is not defined 2016-10-25 14:28:36 +02:00
kerncompat.h btrfs-progs: ioctl: make build-time structure size checks optional 2016-10-10 10:11:31 +02:00
library-test.c btrfs-progs: build, add basic build test for library 2014-11-07 17:52:57 +01:00
Makefile.extrawarn btrfs-progs: build: allow to build with various compiler warnings 2015-10-21 14:29:26 +02:00
Makefile.in btrfs-progs: rename raid6.c to raid56.c 2016-10-24 15:03:20 +02:00
mkfs.c btrfs-progs: mkfs: fix warning for printf format on 32bit 2016-10-05 12:39:01 +02:00
print-tree.c btrfs-progs: Make btrfs-debug-tree print all readable strings for inode flags 2016-10-24 14:58:02 +02:00
print-tree.h btrfs-progs: Enhance and export print_key_type function 2016-09-05 10:04:07 +02:00
props.c btrfs-progs: prop: convert error messages to use error() 2016-05-11 16:37:12 +02:00
props.h btrfs-progs: unify header file inclusion protections 2015-01-21 17:49:26 +01:00
qgroup-verify.c btrfs-progs: Fix stack overflow for checking qgroup on tree reloc tree 2016-10-24 15:02:45 +02:00
qgroup-verify.h btrfs-progs: check: write corrected qgroup info to disk 2016-07-13 18:44:26 +02:00
qgroup.c btrfs-progs: constify string arguments where appropriate 2016-10-03 15:07:23 +02:00
qgroup.h btrfs-progs: constify string arguments where appropriate 2016-10-03 15:07:23 +02:00
quick-test.c btrfs-progs: cleanup, kill trivial btrfs_set_key_type helper 2016-10-03 11:33:15 +02:00
raid56.c btrfs-progs: rename raid6.c to raid56.c 2016-10-24 15:03:20 +02:00
random-test.c btrfs-progs: cleanup, kill trivial btrfs_set_key_type helper 2016-10-03 11:33:15 +02:00
rbtree-utils.c Btrfs-progs: break out rbtree util functions 2014-10-14 10:39:39 +02:00
rbtree-utils.h btrfs-progs: libbtrfs, make exported headers compatible with C++ 2014-11-03 23:50:50 +01:00
README.md btrfs-progs: add an initial README 2015-11-02 15:10:13 +01:00
repair.c btrfs-progs: factor out repair mode 2016-07-04 15:22:53 +02:00
repair.h btrfs-progs: factor out repair mode 2016-07-04 15:22:53 +02:00
root-tree.c btrfs-progs: handle errors from btrfs_alloc_path 2016-09-21 14:12:38 +02:00
send-stream.c btrfs-progs: fix compiler warning 2014-11-07 18:14:38 +01:00
send-stream.h btrfs-progs: add missing includes to header files 2015-06-10 02:52:21 +02:00
send-test.c btrfs-progs: check for negative return value from ioctl 2016-01-12 15:02:55 +01:00
send-utils.c btrfs-progs: typo review of strings and comments 2016-06-01 14:56:56 +02:00
send-utils.h btrfs-progs: drop argument from attribute deprecated 2015-06-30 15:05:07 +02:00
send.h btrfs-progs: unify header file inclusion protections 2015-01-21 17:49:26 +01:00
show-blocks btrfs-progs: typo review of strings and comments 2016-06-01 14:56:56 +02:00
string-table.c btrfs-progs: constify string arguments where appropriate 2016-10-03 15:07:23 +02:00
string-table.h btrfs-progs: constify string arguments where appropriate 2016-10-03 15:07:23 +02:00
super-recover.c btrfs-progs: super-recover: Reuse btrfs_read_dev_super function 2016-10-03 15:07:22 +02:00
task-utils.c btrfs-progs: Check periodic.timer_fd's value before use 2015-11-16 14:23:45 +01:00
task-utils.h btrfs-progs: unify header file inclusion protections 2015-01-21 17:49:26 +01:00
transaction.h btrfs-progs: add missing includes to header files 2015-06-10 02:52:21 +02:00
ulist.c btrfs-progs: typo review of strings and comments 2016-06-01 14:56:56 +02:00
ulist.h btrfs-progs: unify header file inclusion protections 2015-01-21 17:49:26 +01:00
utils-lib.c btrfs-progs: drop feature defines from C files, in favour of CFLAGS defines 2015-01-27 14:45:59 +01:00
utils.c btrfs-progs: rename btrfs_scan_lblkid() to btrfs_scan_devices() 2016-10-25 14:28:36 +02:00
utils.h btrfs-progs: rename btrfs_scan_lblkid() to btrfs_scan_devices() 2016-10-25 14:28:36 +02:00
uuid-tree.c btrfs-progs: use ioctl search headers everywhere 2016-05-11 15:53:16 +02:00
version.h.in btrfs-progs: re-introduce BTRFS_BUILD_VERSION in version.h 2015-03-16 18:40:06 +01:00
version.sh Btrfs progs v4.8.1 2016-10-12 15:20:29 +02:00
volumes.c btrfs-progs: volumes: Remove BUG_ON in raid56 write routine 2016-10-25 14:28:25 +02:00
volumes.h btrfs-progs: Fix wrong tree block alignment for unalianged block group 2016-10-25 14:31:06 +02:00

README.md

Btrfs-progs

Userspace utilities to manage btrfs filesystems. License: GPLv2.

Btrfs is a copy on write (COW) filesystem for Linux aimed at implementing advanced features while focusing on fault tolerance, repair and easy administration.

This repository hosts following utilities:

  • btrfs — the main administration tool (manual page)
  • mkfs.btrfs — utility to create the filesystem (manual page)

See INSTALL for build instructions.

Release cycle

The major version releases are time-based and follow the cycle of the linux kernel releases. The cycle usually takes 2 months. A minor version releases may happen in the meantime if there are queued bug fixes or minor useful improvements.

Development

The patch submissions, development or general discussions take place at linux-btrfs@vger.kernel.org mailinglist, subsciption not required.

References