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* btrfs-progs: Make btrfs_header_chunk_tree_uuid() return unsigned longRoss Kirk2014-01-31
| | | | | | | | | | | | Internally, btrfs_header_chunk_tree_uuid() calculates an unsigned long, but casts it to a pointer, while all callers cast it to unsigned long again. From btrfs commit b308bc2f05a86e728bd035e21a4974acd05f4d1e Signed-off-by: Ross Kirk <ross.kirk@gmail.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <clm@fb.com>
* Btrfs-progs: keep track of transid failures and fix them if possibleJosef Bacik2013-10-16
| | | | | | | | | | | | | 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>
* btrfs-progs: Make btrfs_header_fsid() return unsigned longRoss Kirk2013-10-16
| | | | | | | | | | | | | Internally, btrfs_header_fsid() calculates an unsigned long, but casts it to a pointer, while all callers cast it to unsigned long again. Committed to btrfs as fba6aa75654394fccf2530041e9451414c28084f Fix line length issues and match changes to kernelspace Signed-off-by: Ross Kirk <ross.kirk@gmail.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: remove unused parameter from btrfs_header_fsidRoss Kirk2013-10-16
| | | | | | | | | | Remove unused parameter, 'eb'. Unused since introduction in 7777e63b425f1444d2472ea05a6b2b9cf865f35b Signed-off-by: Ross Kirk <ross.kirk@gmail.com> Reviewed-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: drop unused parameter from btrfs_item_nrRoss Kirk2013-10-16
| | | | | | | | | | Remove unused eb parameter from btrfs_item_nr, unused since introduced in 7777e63b425f1444d2472ea05a6b2b9cf865f35b Signed-off-by: Ross Kirk <ross.kirk@gmail.com> Reviewed-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: make many private symbols staticZach Brown2013-09-03
| | | | | | Signed-off-by: Zach Brown <zab@redhat.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: fix shadow symbolsZach Brown2013-09-03
| | | | | | | | | | | | | | | This fixes all the instances of warnings that symbols declared in blocks shadow symbols with the same name in surrounding scopes: cmds-device.c:341:22: warning: symbol 'path' shadows an earlier one cmds-device.c:285:14: originally declared here I just renamed or removed the risky shadow symbols instead of pulling their blocks out into functions. Signed-off-by: Zach Brown <zab@redhat.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-progs: mark static & remove unused from shared kernel codeEric Sandeen2013-09-03
| | | | | | | | | | | 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>
* btrfs-progs: drop unused parameter from btrfs_release_pathEric Sandeen2013-09-03
| | | | | | | | | | | | | | | Port of commit b3b4aa7 to userspace. parameter tree root it's not used since commit 5f39d397dfbe140a14edecd4e73c34ce23c4f9ee ("Btrfs: Create extent_buffer interface for large blocksizes") This gets userspace a tad closer to kernelspace by removing this unused parameter that was all over the codebase... Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: remove btrfs_init_path calls from ctree.cEric Sandeen2013-08-09
| | | | | | | | | | | | | | | | | | btrfs_init_path was initially used when the path objects were on the stack. Now all the work is done by btrfs_alloc_path and btrfs_init_path isn't required. This patch removes it, and just uses kmem_cache_zalloc to zero out the object. [Eric Sandeen: port kernel commit e00f730 to userspace] (Note, the rest of userspace has an on-stack path, so the actual function remains for now). Signed-off-by: Chris Mason <chris.mason@oracle.com> Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: remove the unnecessary 'return -1;' at the end of bin_searchEric Sandeen2013-08-09
| | | | | | | | | | | The code path should not reach there. Remove it. [Eric Sandeen: port kernel commit 3fed40c to userspace] Signed-off-by: Wang Sheng-Hui <shhuiw@gmail.com> Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: remove some dead/unbuilt codeEric Sandeen2013-08-09
| | | | | | | | | | | | | | | | | Remove some commented-out & #if 0'd code: * close_blocks() * btrfs_drop_snapshot() * btrfs_realloc_node() * btrfs_find_dead_roots() There are still some #if 0'd functions in there, but I'm hedging on those for now, they have been copied to cmds-check.c and I want to see if they can be brough back into ctree.c eventually. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: move btrfs_fsck_reinit_root to cmds-check.cEric Sandeen2013-08-09
| | | | | | | | | | | cmds-check.c contains the only caller of btrfs_fsck_reinit_root; moving it to the caller's source file gets ctree.c a little closer to kernelspace, although it does require exporting add_root_to_dirty_list(), which is not done in kernelspace. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: fix array bound checkingEric Sandeen2013-08-09
| | | | | | | | | | | Otherwise we can execced the array bound of path->slots[]. [Eric Sandeen: port kernel commit a05a9bb to userspace] Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* btrfs-restore: deal with NULL returns from read_node_slotChris Mason2013-07-05
| | | | Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: add --init-extent-tree to btrfsckJosef Bacik2013-06-19
| | | | | | | | | | | | | In some cases the extent tree can just be so gone there is no point in trying to figure out how to put it back together. So add a --init-extent-tree mode which will zero out the extent tree and then re-add extents for all of the blocks we find. This will also undo any balance that was going on at the time of the crash, this is needed because the reloc tree seems to confuse fsck at the moment. With this patch I can put back together a users file system that was completely gone. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: sanity check the number of items in a leaf V2Josef Bacik2013-05-10
| | | | | | | | | | I hit this while working on fsck, I got some weird corruption where the number of items was way higher than what would fit in a leaf, which would make things blow up. This fixes the problem by catching it and returning an error so we gracefully exit instead of segfaulting. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
* Btrfs-progs: add skinny metadata support to progs V3Josef Bacik2013-04-23
| | | | | | | | | This fixes up the progs to properly deal with skinny metadata. This adds the -x option to mkfs and btrfstune for enabling the skinny metadata option. This also makes changes to fsck so it can properly deal with the skinny metadata entries. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com>
* btrfs-progs: impossible BUG_ON meant to test emptyZach Brown2013-02-05
| | | | | | | | old_left_nritems is unsigned so BUG_ON(old_left_nritems < 0) is impossible. Presumably the BUG_ON() meant to test that it wasn't 0 so that btrfs_item_offset_nr() doesn't get a nr of -1. Signed-off-by: Zach Brown <zab@redhat.com>
* btrfs-progs: remove dead code that checks null ebZach Brown2013-02-05
| | | | | | | 'next' can never be non-null in the body of these loops. It's initialized to NULL and the loop is terminated the moment it is set. Signed-off-by: Zach Brown <zab@redhat.com>
* btrfsck: add early code to handle corrupted block groupsChris Mason2012-02-22
| | | | | | | This is mostly disabled, but it is step one in handling corrupted block groups in the extent allocation tree. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfsck: add the ability to prune corrupt extent allocation tree blocksChris Mason2012-02-21
| | | | | | | When we discover bad blocks in the extent allocation tree, repair can now discard them and recreate the references from the rest of the trees. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* btrfsck: add --init-csum-tree to replace the csum root with an empty oneChris Mason2012-02-09
| | | | | | | This will effectively delete all of your crcs, but at least you'll be able to mount the FS with nodatasum. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* btrfs-progs: add a recovery utility to pull files from damanged filesystemsJosef Bacik2011-10-27
| | | | | Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Fix unused-but-set errors in gcc-4.6Chris Ball2011-10-25
| | | | | | | | | | | | | | | | gcc-4.6 (as shipped in Fedora) turns on -Wunused-but-set-variable by default, which breaks the build when combined with -Wall, e.g.: debug-tree.c: In function ‘print_extent_leaf’: debug-tree.c:45:13: error: variable ‘last_len’ set but not used [-Werror=unused-but-set-variable] debug-tree.c:44:13: error: variable ‘last’ set but not used [-Werror=unused-but-set-variable] debug-tree.c:41:21: error: variable ‘item’ set but not used [-Werror=unused-but-set-variable] cc1: all warnings being treated as errors This patch fixes the errors by removing the unused variables. Signed-off-by: Chris Ball <cjb@laptop.org> Signed-off-by: Hugo Mills <hugo@carfax.org.uk>
* Update converter for the new formatYan Zheng2009-06-08
| | | | | Signed-off-by: Yan Zheng <zheng.yan@oracle.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Mixed back reference (FORWARD ROLLING FORMAT CHANGE)Chris Mason2009-06-08
| | | | | | | | | | | | | | | | | This commit introduces a new kind of back reference for btrfs metadata. Once a filesystem has been mounted with this commit, IT WILL NO LONGER BE MOUNTABLE BY OLDER KERNELS. The new back ref provides information about pointer's key, level and in which tree the pointer lives. This information allow us to find the pointer by searching the tree. The shortcoming of the new back ref is that it only works for pointers in tree blocks referenced by their owner trees. This is mostly a problem for snapshots, where resolving one of these fuzzy back references would be O(number_of_snapshots) and quite slow. The solution used here is to use the fuzzy back references in the common case where a given tree block is only referenced by one root, and use the full back references when multiple roots have a reference
* Add semantic checks to btrfsck for files and directoriesYan Zheng2009-01-07
| | | | | | | | | | | | | | | | This patch makes btrfsck check more things, including directory items, file extents, checksumming, inode link counts etc. The code for these checks is similar to the code verifies extent back references. The main difference is that shared tree blocks are treated specially. The partial checking results(unresolved references and/or errors) of shared sub-trees are cached. This avoids scanning the shared blocks several times. Thank you, Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
* Btrfs: update converter for the new disk formatYan Zheng2008-12-17
| | | | | | | | | | | This patch updates the ext3 to btrfs converter for the new disk format. This mainly involves changing the convert's data relocation and free space management code. This patch also ports some functions from kernel module to btrfs-progs. Thank you, Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
* update btrfs-progs for seed device supportYan Zheng2008-11-18
| | | | | | | | | | | | This patch does the following: 1) Update device management code to match the kernel code. 2) Allocator fixes. 3) Add a program called btrfstune to set/clear the SEEDING super block flags.
* Remove offset field from struct btrfs_extent_refYan Zheng2008-10-09
| | | | | | | | | | | | | | The offset field in struct btrfs_extent_ref records the position inside file that file extent is referenced by. In the new back reference system, tree leaves holding reference to file extent are recorded explicitly. We can quickly scan these tree leaves, so the offset field is not required. This patch also makes the back reference system check the objectid when extents are being deleted Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
* Full back reference supportZheng Yan2008-09-23
| | | | | | | | This patch makes the back reference system to explicit record the location of parent node for all types of extents. The location of parent node is placed into the offset field of backref key. Every time a tree block is balanced, the back references for the affected lower level extents are updated.
* Verify parent generation number on btree readsChris Mason2008-05-13
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* Pass down the expected generation number when reading tree blocksChris Mason2008-05-12
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* Fix balance_level to free the middle block if there is room in the left oneChris Mason2008-04-24
| | | | | | balance level starts by trying to empty the middle block, and then pushes from the right to the middle. This might empty the right block and leave a small number of pointers in the middle.
* Don't empty the middle buffer in push_nodes_for_insertChris Mason2008-04-24
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* Keep more pointers free in the nodes for double splitsChris Mason2008-04-24
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* Add chunk uuids and update multi-device back referencesChris Mason2008-04-15
| | | | | | | | | | | | | | | | | | Block headers now store the chunk tree uuid Chunk items records the device uuid for each stripes Device extent items record better back refs to the chunk tree Block groups record better back refs to the chunk tree The chunk tree format has also changed. The objectid of BTRFS_CHUNK_ITEM_KEY used to be the logical offset of the chunk. Now it is a chunk tree id, with the logical offset being stored in the offset field of the key. This allows a single chunk tree to record multiple logical address spaces, upping the number of bytes indexed by a chunk tree from 2^64 to 2^128.
* Change btrfs_map_block to return a structure with mappings for all stripesChris Mason2008-04-09
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* Recow all roots at the end of mkfsChris Mason2008-04-04
| | | | | | The mkfs code bootstraps the filesystem on a single device. Once the raid block groups are setup, it needs to recow all of the blocks so that each tree is properly allocated.
* btrfs-progs: Fix printf format casting errorsAlex Chiang2008-04-01
| | | | | | | | | | | We get lots of warnings of the flavor: utils.c:441: warning: format '%Lu' expects type 'long long unsigned int' but argument 2 has type 'u64' And thanks to -Werror, the build fails. Clean up these printfs by properly casting the arg to the format specified. Signed-off-by: Alex Chiang <achiang@hp.com>
* Update struct btrfs_header flags, and use it to indicate buffers are writtenChris Mason2008-04-01
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* Add support for multiple devices per filesystemChris Mason2008-03-24
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* Call btrfs_cow_block while lowering tree level.Yan2008-02-01
| | | | | | | | When freeing root block of a tree, btrfs_free_extent' parameter 'ref_generation' is from root block itseft. When freeing non-root block, 'ref_generation' is from its parent. so when converting a non-root block to root block, we must guarantee its generation is equal to its parent's generation.
* Copy correct tree when inserting into slot 0Chris Mason2008-01-30
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* Add inode item and backref in one insert, reducing cpu usageChris Mason2008-01-29
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* During deletes and truncate, remove many items at once from the treeChris Mason2008-01-29
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* Remove kernel-space header in btrfs-progsYan2008-01-17
| | | | | | When porting ctree.c in btrfs kernel module to btrfs-progs, I forgot to remove a kernel-space header. This may cause compile error on some system.
* Update btrfs-progs to match kernel sourcesYan2008-01-04
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* Add back pointers from extents to the file or btree referencing themChris Mason2007-12-11
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