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Commit Graph

25 Commits

Author SHA1 Message Date
David Sterba
0acce60a28 btrfs-progs: remove unused argument from clear_extent_dirty
Signed-off-by: David Sterba <dsterba@suse.com>
2017-03-08 13:00:47 +01:00
David Sterba
e1a67a59a9 btrfs-progs: remove unused argument from set_extent_dirty
Signed-off-by: David Sterba <dsterba@suse.com>
2017-03-08 13:00:47 +01:00
David Sterba
aee9207ece btrfs-progs: remove unused argument from set_extent_bits
Signed-off-by: David Sterba <dsterba@suse.com>
2017-03-08 13:00:47 +01:00
David Sterba
dbe176d71a btrfs-progs: remove unused argument from clear_extent_bits
Signed-off-by: David Sterba <dsterba@suse.com>
2017-03-08 13:00:47 +01:00
Qu Wenruo
b2fbec8be1 btrfs-progs: Remove unnecessary parameter to clear_extent_uptodate
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2016-10-03 15:07:23 +02:00
David Sterba
da64ae3a0f btrfs-progs: reorganize extent_buffer and fix alignment of data
Reported by UBSAN, the checksum code tries to access unaligned data that
come from the extent_buffer.

struct extent_buffer {
        struct cache_extent        cache_node;           /*     0    48 */
        u64                        start;                /*    48     8 */
        u64                        dev_bytenr;           /*    56     8 */
        /* --- cacheline 1 boundary (64 bytes) --- */
        u32                        len;                  /*    64     4 */

        /* XXX 4 bytes hole, try to pack */

        struct extent_io_tree *    tree;                 /*    72     8 */
        struct list_head           lru;                  /*    80    16 */
        struct list_head           recow;                /*    96    16 */
        int                        refs;                 /*   112     4 */
        u32                        flags;                /*   116     4 */
        int                        fd;                   /*   120     4 */
        char                       data[0];              /*   124     0 */

        /* size: 128, cachelines: 2, members: 11 */
        /* sum members: 120, holes: 1, sum holes: 4 */
        /* padding: 4 */
};

Add explicit alignment to data.

Reported-by: Lukas Lueg <lukas.lueg@gmail.com>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=156471
Signed-off-by: David Sterba <dsterba@suse.com>
2016-09-21 11:50:05 +02:00
David Sterba
002812542c btrfs-progs: update values of EXTENT_* bits
Make the values unsigned as we do various bit operations.

Signed-off-by: David Sterba <dsterba@suse.com>
2016-07-28 14:08:30 +02:00
David Sterba
9c92c4eb92 btrfs-progs: use values directly for BLOCK_GROUP_ macros
Signed-off-by: David Sterba <dsterba@suse.com>
2016-07-28 14:08:30 +02:00
David Sterba
bf3a4c5f1b btrfs-progs: use unsigned type for extent_buffer flags
We're doing bit operations.

Signed-off-by: David Sterba <dsterba@suse.com>
2016-07-28 14:08:30 +02:00
Omar Sandoval
1d6c7cb725 btrfs-progs: fix btrfsck of space_cache=v2 bitmaps on big-endian
Copy le_test_bit() from the kernel and use that for the free space tree
bitmaps.

Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2016-07-26 18:35:05 +02:00
Omar Sandoval
e4797df6a9 btrfs-progs: check the free space tree in btrfsck
This reuses the existing code for checking the free space cache, we just
need to load the free space tree. While we do that, we check a couple of
invariants on the free space tree itself. This requires pulling in some
code from the kernel to exclude the super stripes.

Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2016-01-12 15:02:54 +01:00
Qu Wenruo
005c470888 btrfs-progs: Move (set/clear_)extent_buffer_uptodate() to extent_io.h.
Unlike kernel, these functions in userland just test/set/clear a member.
So move them to header to avoid extra function call cost.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
2015-02-27 17:44:11 +01:00
David Sterba
07ce7005fc btrfs-progs: unify header file inclusion protections
There are missing ifdefs or defines with very generic names.

Signed-off-by: David Sterba <dsterba@suse.cz>
2015-01-21 17:49:26 +01:00
Josef Bacik
d90d8d2323 Btrfs-progs: pull back backref.c and fix it up
This patch pulls back backref.c, adds a couple of helpers everywhere that it
needs, and cleans up backref.c to fit in btrfs-progs.  Thanks,

Signed-off-by: Josef Bacik <jbacik@fb.com>
[removed free_some_buffers after "do not reclaim extent buffer"]
Signed-off-by: David Sterba <dsterba@suse.cz>
2014-10-14 10:39:38 +02:00
Josef Bacik
c64485544b Btrfs-progs: keep track of transid failures and fix them if possible
A user was reporting an issue with bad transid errors on his blocks.  The thing
is that btrfs-progs will ignore transid failures for things like restore and
fsck so we can do a best effort to fix a users file system.  So fsck can put
together a coherent view of the file system with stale blocks.  So if everything
else is ok in the mind of fsck then we can recow these blocks to fix the
generation and the user can get their file system back.  Thanks,

Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
2013-10-16 08:23:12 -04:00
Eric Sandeen
989ca65a11 btrfs-progs: mark static & remove unused from shared kernel code
In files copied from the kernel, mark many functions as static,
and remove any resulting dead code.

Some functions are left unmarked if they aren't static in the
kernel tree.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
2013-09-03 19:40:53 +02:00
Chris Mason
0bae08fdab Merge branch 'liubo-image-restore'
Signed-off-by: Chris Mason <chris.mason@fusionio.com>

Conflicts:
	disk-io.c
	volumes.h
2013-07-03 14:24:43 -04:00
Liu Bo
095e21af45 Btrfs-progs: enhance btrfs-image to restore image onto multiple disks
This adds a 'btrfs-image -m' option, which let us restore an image that
is built from a btrfs of multiple disks onto several disks altogether.

This aims to address the following case,
$ mkfs.btrfs -m raid0 sda sdb
$ btrfs-image sda image.file
$ btrfs-image -r image.file sdc
---------
so we can only restore metadata onto sdc, and another thing is we can
only mount sdc with degraded mode as we don't provide informations of
another disk.  And, it's built as RAID0 and we have only one disk,
so after mount sdc we'll get into readonly mode.

This is just annoying for people(like me) who're trying to restore image
but turn to find they cannot make it work.

So this'll make your life easier, just tap
$ btrfs-image -m image.file sdc sdd
---------
then you get everything about metadata done, the same offset with that of
the originals(of course, you need offer enough disk size, at least the disk
size of the original disks).

Besides, this also works with raid5 and raid6 metadata image.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
2013-07-03 14:16:10 -04:00
Miao Xie
30d5c8a49f Btrfs-progs: Add chunk recover function - using old chunk items
Add chunk-recover program to check or rebuild chunk tree when the system
chunk array or chunk tree is broken.

Due to the importance of the system chunk array and chunk tree, if one of
them is broken, the whole btrfs will be broken even other data are OK.

But we have some hint(fsid, checksum...) to salvage the old metadata.
So this function will first scan the whole file system and collect the
needed data(chunk/block group/dev extent), and check for the references
between them. If the references are OK, the chunk tree can be rebuilt and
luckily the file system will be mountable.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
2013-07-03 14:06:55 -04:00
Josef Bacik
d93cad2677 Btrfs-progs: add a free space cache checker to fsck V2
In trying to track down a weird tree log problem I wanted to make sure that the
free space cache was actually valid, which we currently have no way of doing.
So this patch adds a bunch of support for the free space cache code and then a
checker to fsck.  Basically we go through and if we can actually load the free
space cache then we will walk the extent tree and verify that the free space
cache exactly matches what is in the extent tree.  Hopefully this will always be
correct, the only time it wouldn't is if the extent tree is corrupt or we have
some sort of awful bug in the free space cache.  Thanks,

Signed-off-by: Josef Bacik <jbacik@fusionio.com>
2013-04-23 18:56:21 +02:00
Mark Fasheh
e5cb128a95 btrfs-progs: libify some parts of btrfs-progs
External software wanting to use the functionality provided by the btrfs
send ioctl has a hard time doing so without replicating tons of work. Of
particular interest are functions like btrfs_read_and_process_send_stream()
and subvol_uuid_search(). As that functionality requires a bit more than
just send-stream.c and send-utils.c we have to pull in some other parts of
the progs package.

This patch adds code to the Makefile and headers to create a library,
libbtrfs which the btrfs command now links to.

Signed-off-by: Mark Fasheh <mfasheh@suse.de>
Signed-off-by: David Sterba <dsterba@suse.cz>
2013-02-27 15:24:25 +01:00
Arvin Schnell
0c38ff3ca4 btrfs-progs: make libbtrfs usable from C++
Please find attached a patch to make the new libbtrfs usable from
C++ (at least for the parts snapper will likely need).

Signed-off-by: Arvin Schnell <aschnell@suse.de>
Signed-off-by: Mark Fasheh <mfasheh@suse.de>
2013-02-19 11:15:30 +01:00
David Woodhouse
4d48b96b28 Add basic RAID[56] support
David Woodhouse originally contributed this code, and Chris Mason
changed it around to reflect the current design goals for raid56.

The original code expected all metadata and data writes to be full
stripes.  This meant metadata block size == stripe size, and had a few
other restrictions.

This version allows metadata blocks smaller than the stripe size.  It
implements both raid5 and raid6, although it does not have code to
rebuild from parity if one of the drives is missing or incorrect.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
2013-02-01 14:22:07 -05:00
Chris Mason
351d17fca2 Verify parent generation number on btree reads 2008-05-13 13:48:58 -04:00
Chris Mason
80791984f6 Rename the extent_map code to extent_io
This mirrors the changes in the kernel code.
2008-03-04 11:16:54 -05:00